CN118354019A - Forestry pest monitoring method and system - Google Patents

Abstract

The invention discloses a forestry pest monitoring method, which comprises the following steps: obtaining forestry monitoring images by an image capture device, wherein the image capture device has a first encoder and a second encoder; encoding, by a first encoder, a first image frame of the plurality of image frames; encoding, by a second encoder, a first image frame of the plurality of image frames, wherein the first image frame encoded by the second encoder has a second sharpness and a second image frame identifier; receiving a first definition selection instruction sent by a monitoring terminal by image capturing equipment; after the image capturing device receives the first sharpness selection instruction, the first image frame encoded by the first encoder is input into the transmission buffer by the image capturing device.

Description

A forestry pest monitoring method and system

Technical Field

The invention relates to the technical field of human-computer interaction equipment, and in particular to a forestry pest monitoring method and system.

Background technique

Forestry resources are very important natural resources. In order to improve the efficiency of forestry resource protection, many forest farms in my country have launched forestry pest monitoring systems. This type of system mainly includes image capture devices (such as visible light cameras or infrared cameras) and monitoring terminals (such as mobile terminals, tablet computers, desktop computers, laptops, etc.). The forestry pest monitoring system currently online uses a common communication transmission protocol (such as LTE or 5G NR), and the hardware equipment used is also some well-known equipment using well-known software. After our research, we found that this type of system has the problem of slow clarity conversion speed.

Summary of the invention

To achieve the above object, the present invention provides a forestry pest monitoring method, the method comprising:

Acquiring a forestry monitoring image by an image capture device, wherein the forestry monitoring image includes a plurality of image frames, and wherein the image capture device has a first encoder and a second encoder;

Encoding a first image frame among the plurality of image frames by a first encoder, wherein the first image frame encoded by the first encoder has a first definition and a first image frame identifier;

The first image frame among the plurality of image frames is encoded by a second encoder, wherein the first image frame encoded by the second encoder has a second definition and a second image frame identifier;

The image capture device receives a first definition selection instruction sent by the monitoring terminal, wherein the first definition selection instruction instructs the image capture device to send an image frame to the monitoring terminal at a first definition;

After the image capture device receives the first definition selection instruction, the image capture device inputs the first image frame encoded by the first encoder into the sending buffer.

In a preferred embodiment, the method further comprises:

After the image capture device receives the first definition selection instruction, the image capture device receives a second definition selection instruction sent by the monitoring terminal, wherein the second definition selection instruction instructs the image capture device to send an image frame to the monitoring terminal at a second definition;

After the image capture device receives the second definition selection instruction, the image capture device inputs the first image frame encoded by the second encoder into a sending buffer;

After the image capture device inputs the first image frame encoded by the second encoder into the sending buffer, the image capture device determines whether the first image frame encoded by the first encoder already exists in the sending buffer based on the first image frame identifier and the second image frame identifier;

If it is determined that the first image frame encoded by the first encoder already exists in the sending buffer, the image capturing device deletes the first image frame encoded by the first encoder in the sending buffer.

In a preferred embodiment, the image capture device determines whether the first image frame encoded by the first encoder already exists in the sending buffer based on the first image frame identifier and the second image frame identifier, including the following steps:

The image capturing device sequentially determines whether the image frame identifiers of all the image frames in the sending buffer are consistent with the second image frame identifier;

If the image capture device determines that the first image frame identifier of the first image frame encoded by the first encoder in the sending buffer is consistent with the second image frame identifier, the image capture device determines that the first image frame encoded by the first encoder already exists in the sending buffer;

If the image capture device determines that the image frame identifiers of all the image frames in the sending buffer are inconsistent with the second identifier, the image capture device determines that there is no first image frame encoded by the first encoder in the sending buffer.

In a preferred embodiment, the method further comprises:

After the image capture device deletes the first image frame encoded by the first encoder in the sending buffer, the image capture device determines whether other image frames are buffered in the sending buffer in addition to the first image frame encoded by the second encoder;

If the image capture device determines that other image frames are buffered in the sending buffer, the image capture device further determines whether the number of the other image frames is greater than a threshold value;

If the image capture device further determines that the number of frames of other image frames is less than the threshold value, the image capture device deletes the other image frames;

After the image capturing device deletes other image frames, the image capturing device sends the first image frame encoded by the second encoder to the monitoring terminal.

In a preferred embodiment, the method further comprises:

If the image capture device further determines that the number of frames of the other image frames is greater than the threshold value, the image capture device stores the other image frames in a dedicated memory;

After the image capture device stores the other image frames in the dedicated memory, the image capture device deletes the other image frames;

After the image capturing device deletes other image frames, the image capturing device sends the first image frame encoded by the second encoder to the monitoring terminal.

In a preferred embodiment, the method further comprises:

The image capture device receives a command sent by the monitoring terminal to retrieve an image frame stored in the dedicated memory;

After the image capture device receives a command to retrieve an image frame stored in the dedicated memory, the image capture device sends other image frames stored in the dedicated memory to the monitoring terminal.

In a preferred embodiment, the method further comprises:

If it is determined that the first image frame encoded by the first encoder does not exist in the sending buffer, the image capturing device stores the first image frame encoded by the second encoder in a dedicated memory;

The image capture device receives a command sent by the monitoring terminal to retrieve an image frame stored in the dedicated memory;

After the image capture device receives a command to retrieve an image frame stored in the dedicated memory, the image capture device sends the first image frame stored in the dedicated memory and encoded by the second encoder to the monitoring terminal.

The present invention provides a forestry pest monitoring system, the system comprising modules for performing the following operations:

Acquiring a forestry monitoring image by an image capture device, wherein the forestry monitoring image includes a plurality of image frames, and wherein the image capture device has a first encoder and a second encoder;

Encoding a first image frame among the plurality of image frames by a first encoder, wherein the first image frame encoded by the first encoder has a first definition and a first image frame identifier;

The first image frame among the plurality of image frames is encoded by a second encoder, wherein the first image frame encoded by the second encoder has a second definition and a second image frame identifier;

The image capture device receives a first definition selection instruction sent by the monitoring terminal, wherein the first definition selection instruction instructs the image capture device to send an image frame to the monitoring terminal at a first definition;

After the image capture device receives the first definition selection instruction, the image capture device inputs the first image frame encoded by the first encoder into the sending buffer.

In a preferred embodiment, the system further comprises a module for performing the following operations:

After the image capture device receives the first definition selection instruction, the image capture device receives a second definition selection instruction sent by the monitoring terminal, wherein the second definition selection instruction instructs the image capture device to send an image frame to the monitoring terminal at a second definition;

After the image capture device receives the second definition selection instruction, the image capture device inputs the first image frame encoded by the second encoder into a sending buffer;

After the image capture device inputs the first image frame encoded by the second encoder into the sending buffer, the image capture device determines whether the first image frame encoded by the first encoder already exists in the sending buffer based on the first image frame identifier and the second image frame identifier;

If it is determined that the first image frame encoded by the first encoder already exists in the sending buffer, the image capturing device deletes the first image frame encoded by the first encoder in the sending buffer.

In a preferred embodiment, the image capture device determines whether the first image frame encoded by the first encoder already exists in the sending buffer based on the first image frame identifier and the second image frame identifier, including the following steps:

The image capturing device sequentially determines whether the image frame identifiers of all the image frames in the sending buffer are consistent with the second image frame identifier;

If the image capture device determines that the first image frame identifier of the first image frame encoded by the first encoder in the sending buffer is consistent with the second image frame identifier, the image capture device determines that the first image frame encoded by the first encoder already exists in the sending buffer;

If the image capture device determines that the image frame identifiers of all the image frames in the sending buffer are inconsistent with the second identifier, the image capture device determines that there is no first image frame encoded by the first encoder in the sending buffer.

Compared with the prior art, the present invention has the following beneficial effects: for forest pest monitoring, since the monitoring video has no audio, and for the purpose of monitoring, the incoherent playback of the image frame does not affect the purpose of monitoring, so for the forest pest monitoring system, it is unnecessary to sacrifice the speed of clarity switching to achieve the coherent playback of the video. In addition, during the forest pest monitoring process, it is hoped that the clarity can be switched quickly to ensure the accuracy of monitoring, so the existing system can no longer meet the requirements of forest pest monitoring. Unfortunately, there is currently no video transmission system dedicated to forest pest monitoring, so for forest pest monitoring, it is currently impossible to increase the speed of clarity switching. The method proposed in the present invention aims to increase the speed of clarity switching.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a system architecture according to an embodiment of the present invention.

FIG. 2 is a logical block diagram of an image capture device according to an embodiment of the present invention.

FIG. 3 is a flow chart of a method according to an embodiment of the present invention.

FIG. 4 is a diagram showing a sequence of image frames in an exemplary sending buffer according to the present invention.

FIG. 5 is another exemplary sequence diagram of image frames in a sending buffer according to the present invention.

FIG. 6 is another exemplary sequence diagram of image frames in a sending buffer according to the present invention.

Detailed ways

The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

As described in the background technology, the current forest pest monitoring system has the problem of slow resolution conversion speed. The specific analysis is as follows: Since the current forest pest monitoring system uses a well-known streaming media transmission method, its resolution (also known as resolution, the current mainstream resolutions are 240P, 360P, 720P and 1080P, etc.) switching speed is slow. After our research, we found that the specific reason for the slow resolution switching speed is that there is only one set of image encoders inside the current camera, and this set of image encoders can encode each frame of the image with a certain resolution based on the HEVC protocol or the h.265 protocol or any known image encoding method, and then the encoder inputs the encoded image frame into the sending buffer of the transmitter chain to wait for sending. When the camera receives the resolution switching command sent by the monitoring terminal, the aforementioned encoder encodes the image frame that has not yet been sent with the new resolution, and then the encoder inputs the image frame encoded with the new resolution into the sending buffer to wait for sending. In the existing system, it is understandable that the transmitter chain must send the other image frames in the buffer in a first-in-first-out manner before sending the image frame encoded with the new definition. Therefore, the main factors for the slow definition switching speed of the current system include the time for the encoder to convert the encoding definition and the time for the transmitter chain to send the image frame encoded with the old definition. Taking mainstream video playback software as an example, the time for general definition switching is generally more than 5s (if the network conditions are poor, the time may reach more than 10s). The definition switching time of the current forestry monitoring system also requires at least 5s. The current video definition switching method is suitable for entertainment video software, because playing entertainment videos requires that the video must be coherent (since entertainment videos include sound and images, if the image jumps frames, the sound will also be discontinuous, so playing entertainment videos requires that the video must be coherent), so for entertainment video software, the speed of definition switching can be sacrificed to achieve coherent video playback. However, for forest pest monitoring, since the monitoring video has no audio, and for the purpose of monitoring, the incoherent playback of the image frame does not affect the purpose of monitoring, it is unnecessary for the forest pest monitoring system to sacrifice the speed of clarity switching to achieve continuous video playback. In addition, during forest pest monitoring, it is hoped that the clarity can be quickly switched to ensure the accuracy of monitoring, so the existing system can no longer meet the requirements of forestry monitoring. Unfortunately, there is currently no video transmission system dedicated to forestry monitoring, so for forest pest monitoring, it is currently impossible to increase the speed of clarity switching. The method proposed in the present invention aims to increase the speed of clarity switching.

Fig. 1 is a schematic diagram of the system architecture of an embodiment of the present invention. The system of the present invention may include one or more image capture devices, the image capture devices are used to obtain monitoring images, encode and send the monitoring images, the monitoring terminal is used to send necessary commands (including the commands proposed by the present invention and other well-known commands for controlling the image capture devices, such as commands for controlling the angle of the image capture devices) to control the image capture devices, and the monitoring terminal can display the monitoring video to scientific researchers.

FIG2 is a logic block diagram of an image capture device according to an embodiment of the present invention. It should be understood by those skilled in the art that FIG2 only shows devices related to the present invention, and omits well-known devices that are not related to the present invention (for example, the image capture device should also have an analog-to-digital converter, and there should be up-conversion, modems, amplifiers, RF devices, etc. in the transmitter chain, but these devices are all well-known devices and are not related to the present invention, so they are not described in detail). The encoder used in the present invention can be any existing encoder, such as a well-known encoder for encoding images based on the HEVC protocol. It should be understood by those skilled in the art that only software writers need to write the method of the present invention into software codes, and then when the processor of the image capture device executes these software codes, the image capture device can execute the method proposed in the present invention. It should also be pointed out that, of course, a transmitter chain can also be configured for the second encoder, but such operation will result in a slower resolution switching speed, because before the resolution is switched to the second resolution, the transmitter chain of the second encoder is not working, and the transmitter chain of the second encoder changes from the standby state to the working state. The RF device needs to perform frequency tuning and other operations, which will slow down the resolution switching speed. Therefore, the design of the present invention is that two encoders share a set of transmitter chains.

Example 1

FIG3 is a flow chart of a method according to an embodiment of the present invention. The method according to the present invention comprises the following steps:

Step 1: Acquire a forestry monitoring image by an image capture device, wherein the forestry monitoring image includes a plurality of image frames, and wherein the image capture device has a first encoder and a second encoder;

Step 2: encoding a first image frame among the plurality of image frames by a first encoder, wherein the first image frame encoded by the first encoder has a first definition and a first image frame identifier;

Step 3: The first image frame among the plurality of image frames is encoded by the second encoder, wherein the first image frame encoded by the second encoder has a second definition and a second image frame identifier; it is understood that the first definition and the second definition can be any values. For the convenience of discussion, the present invention will assume the first definition to be 360P and the second definition to be 720P. It is also understood that the monitoring terminal of the present invention can adjust the first definition corresponding to the first encoder to other definitions at any time by sending a command. This operation is similar to the operation of the existing system introduced in the background technology (and the operation of the current entertainment playback APP), and will not be repeated here. However, if the first definition corresponding to the first encoder is adjusted to other definitions at any time by sending a command, the speed of definition switching is similar to that of the prior art. Therefore, when using the system of the present invention, it is recommended that the monitoring terminal define the definition corresponding to the first encoder as 360P (of course, it can also be defined as other values) in advance when the image capture device is powered on, and define the definition corresponding to the second encoder as 720P. The configuration of the first and second encoders will not be changed during the monitoring process, so that the high-speed definition switching can be maintained continuously. Considering that the present invention is used in the field of forestry monitoring, it is sufficient to fix the definition to two definitions. It should be understood that no matter which definition the monitoring terminal selects, the two encoders need to synchronously encode the image frame, but the image finally sent is only one of the two image frames encoded by the two encoders. In one example, the first image frame identifier can be a natural number, and the second image frame identifier can be a natural number; it should be understood that in the present invention, each frame of the image needs to be numbered sequentially, for example, after powering on, the image frame identifier of the first frame of the image encoded by the first encoder of the image capture device is "1", and after powering on, the image frame identifier of the first frame of the image encoded by the second encoder of the image capture device is also "1" (it can be understood that the first frame of the image encoded by the second encoder is exactly the same as the first frame of the image encoded by the first encoder, because both are the same image captured by the lens), after powering on, the image frame identifier of the second frame of the image encoded by the first encoder of the image capture device is "2", and after powering on, the image frame identifier of the first frame of the image encoded by the second encoder of the image capture device is also "2" (that is, the operation of the second encoder adding the image frame identifier to the image frame is exactly the same as the first encoder), and so on. Of course, in order to save storage space and reduce operating overhead, the natural number of the image frame identifier should be set with an upper limit. For example, the natural number upper limit of the image frame identifier can be designed to be 500, that is, after powering on, the image frame identifier of the 500th frame of the image encoded by the first encoder of the image capture device is "500", and the image frame identifier of the 501st frame of the image encoded by the first encoder of the image capture device is "1". Of course, the upper limit of the natural number can be set arbitrarily, but as a principle, it is necessary to ensure that after the image frame identifier returns to 1, there cannot still be image frames with an image frame identifier of "1" in the sending buffer. In addition, in one example, in the current step, if the image capture device does not receive the second definition selection instruction within the preset time, the first image frame encoded by the second encoder will not enter the sending buffer. At this time, the following options can be available: for example, the first image frame encoded by the second encoder can be directly deleted, and the first image frame encoded by the second encoder can also be stored in the memory of the image capture device for subsequent use; the preset time can be the time when the first image frame encoded by the first encoder is expected to have been sent to the monitoring terminal;

Step 4: The image capture device receives a first definition selection instruction sent by the monitoring terminal, wherein the first definition selection instruction instructs the image capture device to send image frames to the monitoring terminal at the first definition. It should be understood that the first definition selection instruction only instructs the image capture device to send image frames to the monitoring terminal at the first definition, but cannot change the first definition corresponding to the first encoder. For example, if the first definition is 360P, the first definition selection instruction can only instruct the image capture device to send image frames to the monitoring terminal at 360P, but cannot adjust 360P to other values.

Step 5: After the image capture device receives the first definition selection instruction, the image capture device inputs the first image frame encoded by the first encoder into the sending buffer.

Example 2

In embodiment 2, the method further comprises:

After the image capture device receives the first definition selection instruction, the image capture device receives a second definition selection instruction sent by the monitoring terminal, wherein the second definition selection instruction instructs the image capture device to send image frames to the monitoring terminal at the second definition; as mentioned above, the second definition selection instruction only instructs the image capture device to send image frames to the monitoring terminal at the second definition, but cannot change the second definition corresponding to the second encoder;

After the image capture device receives the second definition selection instruction, the image capture device inputs the first image frame encoded by the second encoder into the sending buffer; it should be understood that the image capture device receiving the second definition selection instruction means receiving the second definition selection instruction within a preset time;

After the image capture device inputs the first image frame encoded by the second encoder into the sending buffer, the image capture device determines whether the first image frame encoded by the first encoder already exists in the sending buffer based on the first image frame identifier and the second image frame identifier;

If it is determined that the first image frame encoded by the first encoder already exists in the sending buffer, the image capture device deletes the first image frame encoded by the first encoder in the sending buffer. It should be understood that this operation is to ensure that the same frame of image is not transmitted repeatedly.

Example 3

In Embodiment 3, the image capturing device determines whether the first image frame encoded by the first encoder already exists in the sending buffer based on the first image frame identifier and the second image frame identifier, including the following steps:

The image capture device sequentially determines whether the image frame identifiers of all the image frames in the sending buffer are consistent with the second image frame identifier; combined with Figures 4-6, Figures 4-6 respectively show three possibilities of sending the image frame sequence in the buffer. In Figures 4-6, the left direction is the head of the buffer, and the right direction is the tail of the buffer. Taking Figure 4 as an example, image frame A will be sent first, and image frame B will be sent second. Figure 4 shows an example in which there are image frames before and after the first image frame encoded by the first encoder, Figure 5 shows an example in which there are image frames only before the first image frame encoded by the first encoder, and Figure 6 shows an example in which there are image frames only after the first image frame encoded by the first encoder. These three situations are all applicable to the method proposed by the present invention. A specific example of sequentially determining whether the image frame identifiers of all image frames in the sending buffer are consistent with the second image frame identifier may be (taking FIG. 5 as an example), the image capture device first determines whether the image frame identifier of image frame A is consistent with the second image frame identifier. According to the description of the previous embodiment, the present invention will not have a situation where the image frame identifier of image frame A is consistent with the second image frame identifier (because image frame A and the first image frame encoded by the second encoder are not the same image). It is only possible that for the same image, the image identifiers of two frames of images encoded by two encoders are consistent. For example, if the image frame identifier of image frame A is 3, and the second image frame identifier is 6, it is determined that the image frame identifier of image frame A is inconsistent with the second image frame identifier, and then the image capture device determines whether the image frame identifier of image frame B is consistent with the second image frame identifier, and then the image capture device determines whether the image frame identifier of image frame C is consistent with the second image frame identifier, and so on;

If the image capture device determines that the first image frame identifier of the first image frame encoded by the first encoder in the sending buffer is consistent with the second image frame identifier, the image capture device determines that the first image frame encoded by the first encoder already exists in the sending buffer;

If the image capture device determines that the image frame identifiers of all the image frames in the sending buffer are inconsistent with the second identifier, the image capture device determines that there is no first image frame encoded by the first encoder in the sending buffer.

Example 4

In embodiment 4, the method further comprises:

After the image capture device deletes the first image frame encoded by the first encoder in the sending buffer, the image capture device determines whether other image frames are cached in the sending buffer in addition to the first image frame encoded by the second encoder; still taking Figures 4-6 as an example, after deleting the first image frame encoded by the first encoder, image frames A-C still exist in the sending buffer (of course, in this example, it is assumed that during the process of the image capture device performing the operation of Example 3 and deleting the first image frame encoded by the first encoder, image frames A-C have not been sent), then in this example, "other image frames in addition to the first image frame encoded by the second encoder" are image frames A-C;

If the image capture device determines that there are other image frames cached in the sending buffer, the image capture device further determines whether the number of other image frames is greater than a threshold value; in one example, the threshold value can be defined by the user, and the user can define the threshold value based on the tolerable limit of frame skipping. For example, if the user believes that the loss of 5 frames in the monitoring video will not affect the monitoring result, the threshold value can be set to 5;

If the image capture device further determines that the number of frames of other image frames is less than the threshold value, the image capture device deletes the other image frames; it can be understood that after the image capture device deletes the other image frames, the first image frame encoded by the second encoder comes to the frontmost position of the sending buffer, that is, the first image frame encoded by the second encoder can be sent immediately afterwards, which greatly improves the speed of switching clarity of the system. As mentioned above, since the user believes that deleting image frames A-C will not affect the monitoring results, these frames of images can be deleted. It should be noted again that since the present invention is in the field of forestry monitoring, it is different from entertainment video playback. The present invention does not need to consider the continuity of the user's video viewing, nor does it need to consider the problem of audio and video synchronization. Therefore, the present invention designs this embodiment. After our confidentiality test, the clarity switching time of the system proposed by the present invention only takes an average of 2s. Under good network conditions, the optimal switching time can reach less than 1s.

After the image capturing device deletes other image frames, the image capturing device sends the first image frame encoded by the second encoder to the monitoring terminal.

Example 5

In embodiment 5, the method further comprises:

If the image capture device further determines that the number of other image frames is greater than the threshold value, the image capture device stores the other image frames in a dedicated memory; in one example, the dedicated memory may be a separate storage space in the main memory of the image capture device. The advantage of this operation is that the time required for memory addressing is reduced, and the image capture device can directly search for the deleted other image frames in the dedicated memory;

After the image capture device stores the other image frames in the dedicated memory, the image capture device deletes the other image frames;

After the image capturing device deletes other image frames, the image capturing device sends the first image frame encoded by the second encoder to the monitoring terminal.

Furthermore, the method also includes: the image capture device receives a command sent by the monitoring terminal to retrieve image frames stored in the dedicated memory; in one example, the command to retrieve image frames stored in the dedicated memory can instruct the image capture device to send all image frames stored in the dedicated memory to the monitoring terminal, or can instruct the image capture device to send image frames stored in the dedicated memory within a specific time period to the monitoring terminal; after the image capture device receives the command to retrieve image frames stored in the dedicated memory, the image capture device sends other image frames stored in the dedicated memory to the monitoring terminal.

Furthermore, the method also includes: if it is determined that the first image frame encoded by the first encoder does not exist in the sending buffer, the image capture device stores the first image frame encoded by the second encoder in a dedicated memory; the image capture device receives a command sent by the monitoring terminal to retrieve the image frame stored in the dedicated memory; after the image capture device receives the command to retrieve the image frame stored in the dedicated memory, the image capture device sends the first image frame encoded by the second encoder stored in the dedicated memory to the monitoring terminal.

Example 6

The present invention provides a forestry pest monitoring system, the system comprising modules for performing the following operations:

Acquiring a forestry monitoring image by an image capture device, wherein the forestry monitoring image includes a plurality of image frames, and wherein the image capture device has a first encoder and a second encoder;

Encoding a first image frame among the plurality of image frames by a first encoder, wherein the first image frame encoded by the first encoder has a first definition and a first image frame identifier;

The first image frame among the plurality of image frames is encoded by a second encoder, wherein the first image frame encoded by the second encoder has a second definition and a second image frame identifier;

The image capture device receives a first definition selection instruction sent by the monitoring terminal, wherein the first definition selection instruction instructs the image capture device to send an image frame to the monitoring terminal at a first definition;

After the image capture device receives the first definition selection instruction, the image capture device inputs the first image frame encoded by the first encoder into the sending buffer.

Furthermore, the system also includes a module for performing the following operations: after the image capture device receives the first clarity selection instruction, the image capture device receives a second clarity selection instruction sent by the monitoring terminal, wherein the second clarity selection instruction instructs the image capture device to send image frames to the monitoring terminal with the second clarity; after the image capture device receives the second clarity selection instruction, the image capture device inputs the first image frame encoded by the second encoder into a sending buffer; after the image capture device inputs the first image frame encoded by the second encoder into the sending buffer, the image capture device determines whether the first image frame encoded by the first encoder already exists in the sending buffer based on the first image frame identifier and the second image frame identifier; if it is determined that the first image frame encoded by the first encoder already exists in the sending buffer, the image capture device deletes the first image frame encoded by the first encoder in the sending buffer.

Furthermore, the image capture device determines whether a first image frame encoded by a first encoder already exists in a sending buffer based on a first image frame identifier and a second image frame identifier, including the following steps: the image capture device determines, in sequence, whether the image frame identifiers of all image frames in the sending buffer are consistent with the second image frame identifier; if the image capture device determines that the first image frame identifier of the first image frame encoded by the first encoder in the sending buffer is consistent with the second image frame identifier, the image capture device determines that a first image frame encoded by the first encoder already exists in the sending buffer; if the image capture device determines that the image frame identifiers of all image frames in the sending buffer are inconsistent with the second identifier, the image capture device determines that a first image frame encoded by the first encoder does not exist in the sending buffer.

It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims (10)

1. A forest pest monitoring method, characterized in that the method comprises: Acquiring a forestry monitoring image by an image capture device, wherein the forestry monitoring image includes a plurality of image frames, and wherein the image capture device has a first encoder and a second encoder; Encoding a first image frame among the plurality of image frames by a first encoder, wherein the first image frame encoded by the first encoder has a first definition and a first image frame identifier; Encoding a first image frame among the plurality of image frames by a second encoder, wherein the first image frame encoded by the second encoder has a second definition and a second image frame identifier; The image capture device receives a first definition selection instruction sent by a monitoring terminal, wherein the first definition selection instruction instructs the image capture device to send an image frame to the monitoring terminal at the first definition; After the image capture device receives the first definition selection instruction, the image capture device inputs the first image frame encoded by the first encoder into a sending buffer. 2. The method of claim 1, wherein the method further comprises: After the image capture device receives the first definition selection instruction, the image capture device receives a second definition selection instruction sent by the monitoring terminal, wherein the second definition selection instruction instructs the image capture device to send an image frame to the monitoring terminal at the second definition; After the image capture device receives the second definition selection instruction, the image capture device inputs the first image frame encoded by the second encoder into a sending buffer; After the image capture device inputs the first image frame encoded by the second encoder into the sending buffer, the image capture device determines, based on the first image frame identifier and the second image frame identifier, whether the first image frame encoded by the first encoder already exists in the sending buffer; If it is determined that the first image frame encoded by the first encoder already exists in the sending buffer, the image capturing device deletes the first image frame encoded by the first encoder in the sending buffer. 3. The method of claim 2, wherein the step of determining by the image capture device whether the first image frame encoded by the first encoder already exists in the sending buffer based on the first image frame identifier and the second image frame identifier comprises the following steps: The image capturing device determines in sequence whether the image frame identifiers of all the image frames in the sending buffer are consistent with the second image frame identifier; If the image capture device determines that the first image frame identifier of the first image frame encoded by the first encoder in the sending buffer is consistent with the second image frame identifier, the image capture device determines that the first image frame encoded by the first encoder already exists in the sending buffer; If the image capture device determines that the image frame identifiers of all the image frames in the sending buffer are inconsistent with the second identifier, the image capture device determines that there is no first image frame encoded by the first encoder in the sending buffer. 4. The method of claim 3, wherein the method further comprises: After the image capture device deletes the first image frame encoded by the first encoder in the sending buffer, the image capture device determines whether other image frames are buffered in the sending buffer in addition to the first image frame encoded by the second encoder; If the image capture device determines that the other image frames are still buffered in the sending buffer, the image capture device further determines whether the number of the other image frames is greater than a threshold value; If the image capture device further determines that the number of the other image frames is less than the threshold value, the image capture device deletes the other image frames; After the image capturing device deletes the other image frames, the image capturing device sends the first image frame encoded by the second encoder to the monitoring terminal. 5. The method of claim 4, wherein the method further comprises: If the image capture device further determines that the frame number of the other image frames is greater than the threshold value, the image capture device stores the other image frames in a dedicated memory; After the image capture device stores the other image frames in the dedicated memory, the image capture device deletes the other image frames; After the image capturing device deletes the other image frames, the image capturing device sends the first image frame encoded by the second encoder to the monitoring terminal. 6. The method of claim 5, wherein the method further comprises: The image capture device receives a command sent by the monitoring terminal to retrieve the image frame stored in the dedicated memory; After the image capture device receives the command to retrieve the image frames stored in the dedicated memory, the image capture device sends other image frames stored in the dedicated memory to the monitoring terminal. 7. The method of claim 6, wherein the method further comprises: If it is determined that the first image frame encoded by the first encoder does not exist in the sending buffer, the image capturing device stores the first image frame encoded by the second encoder in the dedicated memory; The image capture device receives a command sent by the monitoring terminal to retrieve the image frame stored in the dedicated memory; After the image capture device receives the command to retrieve the image frame stored in the dedicated memory, the image capture device sends the first image frame stored in the dedicated memory and encoded by the second encoder to the monitoring terminal. 8. A forestry pest monitoring system, characterized in that the system includes modules for performing the following operations: Acquiring a forestry monitoring image by an image capture device, wherein the forestry monitoring image includes a plurality of image frames, and wherein the image capture device has a first encoder and a second encoder; Encoding a first image frame among the plurality of image frames by a first encoder, wherein the first image frame encoded by the first encoder has a first definition and a first image frame identifier; Encoding a first image frame among the plurality of image frames by a second encoder, wherein the first image frame encoded by the second encoder has a second definition and a second image frame identifier; The image capture device receives a first definition selection instruction sent by a monitoring terminal, wherein the first definition selection instruction instructs the image capture device to send an image frame to the monitoring terminal at the first definition; After the image capture device receives the first definition selection instruction, the image capture device inputs the first image frame encoded by the first encoder into a sending buffer. 9. The system of claim 8, wherein the system further comprises a module for performing the following operations: After the image capture device receives the first definition selection instruction, the image capture device receives a second definition selection instruction sent by the monitoring terminal, wherein the second definition selection instruction instructs the image capture device to send an image frame to the monitoring terminal at the second definition; After the image capture device receives the second definition selection instruction, the image capture device inputs the first image frame encoded by the second encoder into a sending buffer; After the image capture device inputs the first image frame encoded by the second encoder into the sending buffer, the image capture device determines, based on the first image frame identifier and the second image frame identifier, whether the first image frame encoded by the first encoder already exists in the sending buffer; If it is determined that the first image frame encoded by the first encoder already exists in the sending buffer, the image capturing device deletes the first image frame encoded by the first encoder in the sending buffer. 10. The system of claim 9, wherein the step of determining by the image capture device whether the first image frame encoded by the first encoder already exists in the sending buffer based on the first image frame identifier and the second image frame identifier comprises the following steps: The image capturing device determines in sequence whether the image frame identifiers of all the image frames in the sending buffer are consistent with the second image frame identifier; If the image capture device determines that the first image frame identifier of the first image frame encoded by the first encoder in the sending buffer is consistent with the second image frame identifier, the image capture device determines that the first image frame encoded by the first encoder already exists in the sending buffer; If the image capture device determines that the image frame identifiers of all the image frames in the sending buffer are inconsistent with the second identifier, the image capture device determines that there is no first image frame encoded by the first encoder in the sending buffer.