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Image signal coding method, equipment and storage medium

A technology of image signal and encoding method, which is applied in image communication, image analysis, image data processing, etc., and can solve problems such as impossible to estimate correctly, blurred images, etc.

Inactive Publication Date: 2003-02-05
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above methods, when the foreground has motion different from the background, it is impossible to correctly estimate image The global motion parameters between
As a result, the problem occurs that the generated background sprite image is vague

Method used

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  • Image signal coding method, equipment and storage medium
  • Image signal coding method, equipment and storage medium
  • Image signal coding method, equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] figure 2 Shown in Embodiment 1 of the present invention image Configuration of signal encoding equipment. exist image In the signal encoding device 1, the input color captured by the color camera 2 image Input to the layered part 4, and at the same time put the depth captured by the rangefinder 3 image Input to stratification section 4.

[0032] Rangefinder 3 output from color image The depth of the same observation point in image (obtained by mapping the depth value of the camera in units of pixel gray levels image ). image 3 An example of the configuration of the rangefinder 3 is shown. In the range finder 3, the light source section 3A irradiates the object H with near-infrared laser slit light while scanning the light in the horizontal direction, and passes through the narrow band filter (interference filter) 3E and the lens 3B, at the near-infrared laser slit light. The reflected light from the object H is picked up at the infrared camera 3C.

[0033] T...

Embodiment 2

[0072] Figure 9 shows that according to Embodiment 2 of the present invention image The configuration of the signal encoding device 30, wherein, with figure 2 Similar parts are given with figure 2 same label in . In addition to providing a sub-picture developing section 31 between the sub-picture generating section 5 and the sub-picture coding section 7, image Signal encoding device 30 is the same as that in Embodiment 1 imageThe signal encoding device 1 has the same configuration.

[0073] as in Figure 10 shown in the background sprite image In , with respect to an area where no pixel value is written due to occlusion of the foreground, when there is a pixel to write a pixel value near such an area (that is, in Figure 10 When there is a target pixel in the area indicated by "A" in the middle), the sprite expanding part 31 extrapolates the pixel value at the pixel value writing pixel, thereby expanding the background sprite image .

[0074] Therefore, by placing ...

Embodiment 3

[0078] Figure 11 shows that according to Embodiment 3 of the present invention image The configuration of the signal encoding device 40, wherein, with figure 2 Similar parts are given with figure 2 same label in . exist image In the signal encoding device 40, the foreground obtained in the layered part 4 image and background image Input to the area boundary correction section 41 .

[0079] The region boundary correction section 41 passes as a general image The unwrapping process performed by the processing technique unwraps the foreground edges to correct the boundary between the foreground and the background. FIG. 12 is an explanatory diagram of region boundary correction processing. Figures 12A and 12B respectively show the foreground before region boundary correction image and background image , while Figures 12C and 12D respectively show the foreground subject to region boundary correction image and background image . In FIGS. 12A and 12B, the area A which ...

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PUM

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Abstract

Provided are a depth image obtaining section that obtains a depth image from the same viewpoint as in the input image, a layer section that separates the input image into a foreground image and a background image as layered images using depth information of the depth image, a coding section that encodes the foreground image, a background sprite generating section that generates a background sprite image from the background image, and a sprite coding section that encodes the background sprite image. The depth image from the same viewpoint as in the input image is obtained in the depth image obtaining section, the input image is separated into a foreground image and a background image as layered images using the depth information, and based on the separated background image, a background sprite image is generated.

Description

technical field [0001] The present invention relates to image Signal encoding method and from mobile image Generate a sprite image device of. Background technique [0002] In recent years, sprites have been used in games or on the Internet image As a technique for obtaining interactive graphical displays. described in JP2000-148130 from mobile image spawn sprite image one of the traditional techniques. [0003] According to the description, generate a sprite image Such as figure 1 shown. First, in step (hereinafter referred to as ST) 1, the input includes movement of a part photographed by a camera operation such as panning or zooming. image . In ST2, move from image Extract global motion parameters (representing the entire image parameters of the movement). In ST3, on mobile image Determines the basic frame from which the sub-picture is generated. [0004] In ST4, predictions are produced by manipulating global motion parameters on frames other than the bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/50G06T7/00H04N5/272H04N19/23H04N19/503H04N19/51H04N19/57H04N19/597H04N19/85
CPCG06T7/004G06T7/70H04N5/272
Inventor 吾妻健夫登一生鱼森谦也森村淳
Owner PANASONIC CORP