JPS6310289A - Picture producing device - Google Patents

Abstract

PURPOSE:To reduce arithmetic quantity needed for production of picture element and to produce pictures at a high speed, by dividing a picture according to the difference of luminance to produce the luminance of picture elements at the end points of those divided picture areas respectively and interpolating the luminance of all picture elements within the areas by the luminance of the picture elements at said end points. CONSTITUTION:A picture area dividing part 1 divides a produced picture into oblong picture areas having the same luminance of picture elements. A picture element luminance producing part 2 produces the luminance of the picture elements of the key point of each picture area. An intra-picture area interpolating part 3 obtains the luminance of all picture elements in each picture area through interpolation of the luminance of the key point to store it in a frame buffer 4 and reads data out of the buffer 4 to display them at a display part 5. Thus the picture is divided into the number of areas much smaller than all picture elements of the produced picture. Therefore the picture element producing calculation frequency can be reduced and pictures are produced at a high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an image generation device using a computer.

2. Description of the Related Art In recent years, image generation technology has been applied in a wide range of fields such as CAD/CAM. However, the processing speed is not fast enough, and further speeding up is expected.

An example of a conventional image generation device will be described below with reference to the drawings.

FIG. 3 shows the processing flow of a conventional image generation device. The pixel brightness generation unit generates the brightness of all pixels on the screen. The generated luminance information is stored in a frame buffer, and the data is read out from the frame buffer and displayed.

Problems to be Solved by the Invention However, in the above configuration, a brightness generation calculation is required for each pixel. Since the time required for brightness generation calculations is much longer than other calculations, there is a problem in that the processing speed is slow.

In view of the above problems, the present invention provides an image generation device that generates images at high speed by reducing the amount of calculations required to generate images.

Means for Solving the Problems In order to solve the above problems, the image generation device of the present invention includes:
As shown in FIG. 1, the screen area dividing section, the pixel brightness generation section,
It has a configuration called an intra-screen area interpolation section.

When an active screen is divided into screen regions whose pixels have approximately equal brightness, images generated by current image generation devices can be divided into sufficiently smaller regions than the total number of pixels.

This makes it possible to sufficiently reduce the number of pixel brightness generation calculations that determine the processing speed of the image generation device.
Therefore, high-speed image generation is possible.

Embodiment Hereinafter, an image generation apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the flow of processing of an image generation device in an embodiment of the present invention. Each component in FIG. 1 will be explained. The image area dividing unit 1 divides the generated image into rectangular screen areas with equal pixel brightness. The pixel brightness generation unit 2 generates the brightness of the pixel at the representative point of each screen area.The intra-screen area interpolation unit 3 obtains the brightness of all pixels in each screen area from the brightness of the representative point. 4 is a frame buffer, and 5 is a display section. The operation of the image generation apparatus configured as described above will be described below with reference to FIGS. 1 and 2.

The operation when displaying the image shown in FIG. 2(a) will be described as an example. An example of division of the screen area division section is shown in Fig. 2 (Mount 2). FIG. 2(C) is an enlarged view of the boundary portion of the triangle in FIG. 2(b). Since the number of screen areas is clearly smaller than the number of pixels, the number of pixel brightness generation operations is also reduced.

As described above, according to this embodiment, by providing the screen area dividing unit, pixel brightness generation unit, and screen area intrapolation unit as shown in FIG. It is possible to speed up the process.

Effects of the Invention As described above, the present invention can speed up image generation by providing a screen area dividing section, a pixel brightness generation section, and an intra-screen area interpolation section.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the device of the present invention, FIG. 2 is a schematic diagram showing an example of the operation of the device of the invention, and FIG. 3 is a configuration diagram of a conventional image generation device. 1...Screen area dividing unit, 2...Pixel brightness generation unit, 3...Screen area interpolation unit, 4...
... Frame buffer, 5... Display section. Name of agent Patent attorney Toshio Nakao (1 person) Figure 1 Figure 2 (phantom (b) (C) Figure 3

Claims (1)

[Claims] A screen area dividing unit that divides the screen to be generated into several screen areas based on differences in brightness, a pixel brightness generation unit that generates the brightness of the pixels at the end points of each screen area, and the brightness of all pixels in each screen area. and an intra-screen area interpolation unit that obtains the brightness of pixels at end points by interpolating the brightness of pixels at end points.