14,807 questions
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17
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getting cameras list on firefox with the camera_web flutter plugin causes an error
I'm trying to test basic camera implementation in my flutter app, in general in IOS and Android the app works great, I can record videos and even see a preview of the recorded videos.
in chrome I can ...
- 32k
0
votes
0
answers
10
views
Exif rotation value after taking a picture is not being captured correctly in Flutter
I am trying to take a picture, and then trying to capture the exif rotation value of an image and based on that value, trying to rotate the image. I am using exif package. Even tho the image is ...
0
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0
answers
16
views
Really confused for using google_ml_kit_pose_detection flutter library or implementing the pose detection using native method channels of google mlkit [closed]
I want to implement a pose detection in my app but really confused between using the google_ml_kit flutter library as it is not official library or should i use native google ml kit library on both ...
1
vote
1
answer
61
views
OpenCV: Unable to Stream from Webcam (Built-in and External Logitech C270)
I’m trying to test if I can stream my camera feed in OpenCV. I have two cameras connected to my laptop:
The built-in webcam.
An external Logitech C270 webcam.
Both cameras work fine when I use them ...
- 11
0
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0
answers
23
views
Build failed with these following exceptions
Execution failed for task ':camera_android_camerax:compileDebugJavaWithJavac'.
Could not resolve all files for configuration ':camera_android_camerax:androidJdkImage'.
Failed to transform core-for-...
1
vote
0
answers
21
views
I am using mediapipe tflite model and infrence speed is too long around (900ms)
When running the same model on native android it is giving aroung 90 ms but when runinng the model using tflite_flutter library it is taking around 900ms , I have really tried many things but cant ...
0
votes
1
answer
24
views
How to access camera "hidden by the manufacturer"?
My phone has three cameras, two rear and one front, but when I call either of the Camera APIs it only reports 2 cameras (one of the rear and the front) and the 2nd rear camera appears to be missing?
...
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-1
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1
answer
26
views
SetActive for multiple cameras
I have a working script:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Interactive_map : MonoBehaviour
{
public Camera[] cameras;
void ...
- 67
0
votes
1
answer
19
views
Is there a fixed order to the list of devices retrieved with the WebRTC's enumerateDevice API?
I am using windows laptop with chrome browser.
Whenever I am using webpages using WebRTCs,(e.g. WebRTC Sample)
when I'm choosing which camera to use, It shows list of cameras with same order.
I ...
- 11
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votes
0
answers
16
views
Integration of Raspberry PI Pico w/ OV 5647 [closed]
i'm trying to implement a OV 5647 camera module to a embedded system which the main controller would be a Raspberry Pi Pico, and since i'm new working with the Raspberry, i don't know if i can run ...
0
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0
answers
17
views
How to get horizontal and vertical FoV of the picture taken by user in flutter?
I want to calculate the 2D area of the picture taken by user in flutter, therefore I wanted to use the horizontal distance, vertical and horizontal field of view of the picture taken. The horizontal ...
- 11
0
votes
0
answers
35
views
FFmpeg and OpenCV: Issues with RTSP Stream Decoding from H.265 Camera (SIYI A8 mini gimbal camera)
I am working on an object detection and tracking project using a camera that streams H.265 video over RTSP (rtsp://192.168.144.25:8554/main.264. However, I am encountering issues with both FFmpeg, ...
1
vote
0
answers
13
views
camera not working using Quagga.js in odoo 11
I am working on a web application create module that requires access to the camera. The application is served over HTTPS using Nginx, as browsers typically mandate HTTPS for accessing hardware like ...
- 33
0
votes
0
answers
20
views
Unfocused camera effect, geometrical explanation
I noticed that if I make a photo of a chess board with wrong focus, black squares become small and white takes almost all space. It can be well observed on last photo (Lens position = 2). How to ...
- 166
0
votes
1
answer
30
views
Camera initial position problem in PLAY mode
I would like help in that I have a prefab camera with these transform.position data:
Scene:Vector3(-2.86999989,1.01999998,-0.810000002).
This row in the code:
[SerializeField] private Vector3 ...
- 11
0
votes
1
answer
49
views
Qt 6.8 How to force QML Camera to focus again
I'm porting an Android Qt 5.7 app to Qt 6.8.
The app uses the QML Camera module to take some photos and it also uses an "invisible button" covering almost all viewport to force a re-focus of ...
- 1,490
1
vote
0
answers
19
views
How to Implement Drone Identification Using Camera, Coordinates, and Orientation in React Native?
I’m developing a feature in a React Native application where I need to open the camera and point it towards drones flying in the air. The idea is to identify a specific drone by cross-referencing its ...
- 11
1
vote
0
answers
24
views
How to detect constituent camera change when using builtInDualWideCamera?
I'm building an iOS camera app and need help with macro mode functionality. I want to:
Detect when the camera switches between wide and ultra-wide lenses (when it is set to builtInDualWideCamera) like ...
- 935
0
votes
0
answers
24
views
Enabling browser camera access from Dockerfile
Can somebody help figure out how to enable camera access in the web python app that is run in docker. Obviously, it runs well when I run it locally. This is the code I try to run:
from flask import ...
- 43
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votes
0
answers
40
views
Camera index error with cv2 on my raspberry pi
Ive made a python program that uses yolov5 to detect different things that the camera sees. I use cv2 to get the camera stream to the yolov5 and on my laptop everthing worked good, but when i placed ...
- 1
0
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0
answers
21
views
How can I simultaneously acquire Image and Point Cloud data from an iPhone and send it via WebSockets to FoxGlove?
I'm trying to acquire the camera image and the point cloud data from an iPhone. I plan to stream both simultaneously using WebSockets. These messages will be sent to FoxGlove to visualize the data.
My ...
- 1
0
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0
answers
22
views
How to control IR illuminator on Doogee S61 Pro in Android
Hi is there a way in the Android API to manually control the IR illuminators for the Doogee S61 pro night-vision camera? Trying to use a 3rd party camera app and I can access the IR camera but the IR ...
- 1
0
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0
answers
37
views
Android webview close automatically when capture image from camera
I have used WebView camera for capture image but in Android 14 when capture 2-3 images one by one then on click OK button in camera WebView close automatically and also not showing any error or log.
...
- 1,592
0
votes
0
answers
20
views
How to freeze 3D camera angle while selecting points in matplotlib
I have the below code that uses the lasso method to select points. I can toggle this on and off by pressing 'Z'. However, when clicking the left mouse button to draw a lasso contour around the points ...
- 33
0
votes
0
answers
18
views
The problem of calibration of linear scan camera
I need to calibrate a line-scan camera. Currently, I am using a method similar to Zhang Zhengyou's calibration technique, but with fewer parameters. My calibration tool is a swinging light source with ...
- 49
0
votes
1
answer
30
views
When re-entering the scene, writes "No Cameras rendering" in unity
When re-entering the scene, writes "No Cameras rendering". I have 2 scripts, which make the transition to another scene. There are cameras on all the scenes. Saves are not performed anywhere....
-1
votes
0
answers
41
views
How to scan and highlight tiny QR code similar camera on iphone using Javascript
I am developing a QR code scanning feature using JavaScript libraries. I've tried libraries like html5-qrcode and jsQR, and they work well for standard-sized QR codes. However, my application needs to ...
- 1
0
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0
answers
59
views
Warning: TypeError: Cannot read property 'Type' of undefined
Im am writing this code in react native with expo but the problem is when I click the button its giving me an error Warning: TypeError: Cannot read property 'Type' of undefined
here is the button:
<...
- 13
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votes
0
answers
18
views
Open cv.VideoCapture(index) - ffmpeg list camera names - How to match?
def fetch_camera_input_settings(self):
try:
self.database_functions = database_functions
self.camera_input_device_name = database_functions.read_setting("...
- 2,353
0
votes
0
answers
18
views
iPhone 15 Pro Max Camera Ignores deviceId and Switches Between Lenses Automatically in React Apps
I’m building a web app that uses the camera for document scanning and have noticed strange behavior on the iPhone 15 Pro Max. The phone seems to:
1. Select a default camera (likely the main wide-...
- 11
1
vote
1
answer
65
views
From memory buffer to disk as fast as possible
I would like to present a scenario and discuss suitable design patterns to address it.
Consider a simple situation: a camera records to a memory buffer for ten seconds before stopping. Once recording ...
- 371
1
vote
1
answer
70
views
Flutter Camera Video Recording & Device Orientation problem
I'm trying to make a mobile app that should work with tablets 7" and above for the screen size.
The app uses the camera when it starts after the login completes.
The camera shall record video and ...
0
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0
answers
24
views
Camera jump in quaternion rotation with mouse input
I'm writing a small 3d engine and there is a problem with a “free” camera. I rotate the camera with a quaternion, and expect that when scrolling the mouse wheel the camera will move in the direction ...
- 11
0
votes
0
answers
17
views
WEB No camera found in nuxt js
I create a project with nuxt 3, and use qr-scanner package, my project run successfully and camera works, but when i shared my project to another device with my (ip and port) camera not working, it ...
0
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0
answers
31
views
Syncing timed camera and LED flash on Raspberry Pi
I have a Raspberry Pi 4 which I have connected to an Arducam 64MP OwlSight Auto-Focus camera (ov64a40) and 2 neopixel jewel LEDs (7 x 5050 RGBW). I need to be able to take a photo every 30 seconds ...
- 1
0
votes
2
answers
50
views
Fill with a white PlaneGeometry the viewport with exact size
I am trying to paint white the viewport in threejs with a planeGeometry. The reason is that I need the view plane with size and transform (rotation and position).
These are my two fails tries:
...
- 910
0
votes
1
answer
35
views
Showing custom video stream in IMG element
I am working on a Blazor WASM app that needs to show a Axis camera video stream. As I don't want to expose the credentials, I want to serve the stream using a custom API.
The camera stream (for my ...
- 139
0
votes
0
answers
75
views
How to get DisplayCutout height for camera hole in emulator?
I am making a full screen application and encountered a situation where controls can be partially covered by camera cutout. This situation occurs in the emulator with last Google Pixel models. I ...
0
votes
1
answer
51
views
Apply constraints of Pan Tilt Zoom to Camera without the stream pausing for a little while
So i am in a bit of a pickle I am using WebRTC to control the PTZ functions of acamera using buttons for movement and zooming.
const constraints = {
video: {
pan: true,
tilt: true,
...
- 11
0
votes
2
answers
65
views
opencv, mp4 not opening [closed]
I am starting to use openCV with python, and I recorded a video, when I open the video, windows tells me that I can't open it maybe because the type of file can't be taken or the extension (.mp4) can ...
- 29
1
vote
0
answers
50
views
How to open usb webcam, device class 239
Before asking, I live in non-english region. So, I'm poor in English.
I tried to connect webcam camera with android application, using openCV.
But openCv can't find my webcam.
My sample app has usb ...
- 35
1
vote
1
answer
70
views
How can I access my Google Nest Aware video history via API?
I have an active Google Nest Aware subscription and want to retrieve video history (recordings and events) through an API. I know that some integrations are available via Google Assistant, but I'm ...
0
votes
1
answer
67
views
How to improve focal length accuracy in camera calibration?
Issue
I am working on calibrating some cameras, and I'm having slight (5% or so) error in the focal length, as well as okay but not great re-projection error (~0.7px). For my application, I need the ...
- 23
3
votes
0
answers
56
views
Why ESP32-S3-WROOM-V1 doesn't stream video on browser?
I'm trying to stream video using the IP address but what I get when I access the browser (Google Chrome) is a white screen.
I have been using the board for capturing pictures (using the same code ...
- 41
-1
votes
3
answers
161
views
iOS App crashing due to Camera permission
I have a view controller where I'm trying to open a camera to scan a QR code. Every time I open the VC it crashes my app with an error message:
This app has crashed because it attempted to access ...
- 65
0
votes
0
answers
37
views
How can I fix the crash issue, when i combine the `flutter_gemma` and `camera` packages in my app?
I've used the flutter_gemma package in my application. And I've used a camera package.
If I open the camera and the camera is working, but if I try to capture a picture or if I do anything inside the ...
- 21
0
votes
0
answers
45
views
Saving file to a Sony handycam
For a project, I want to put a file into a Sony handycam, I tried some software like multiAVCHD or BDedit to recreate or edit the structure, but I can't get it to work.
At best, when I try to view the ...
- 23
0
votes
0
answers
22
views
navigator.mediaDevices mobile multi-back cameras choosing camera without focus
In general, this implementation is working, but on some devices like the iPhone 15 Plus and Samsung S21 FE, even when choosing the correct camera, it doesn't focus properly unless zoom is applied.
...
- 535
0
votes
0
answers
38
views
Slow Camera with YoloV5
I’m working with a Jetson Orin Nano and a Raspberry Pi Camera Module V2, aiming to run YOLOv5 for real-time image processing. I’ve tried using the following code, but the camera feed is extremely slow ...
- 1
0
votes
0
answers
75
views
Trying to create a .DLL to take pictures on a USB Camera
I am trying to create a C# UWP dll that I can import into powershell to automate control of simple USB camera (Take photo on command and save to file)
I have found a basic CameraStarterSDK from ...
- 1