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Image processing method and device

An image processing and image technology, which is applied in the field of image processing, can solve problems such as target image quality degradation, calculation process errors, and reduced calculation saving rate

Pending Publication Date: 2021-09-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] However, for image blocks that occupy a larger field of view, M is also larger. Simply using the above process will result in fewer deletions and reduce the saving rate of calculation. When Or when Δθ exceeds 180°, the calculation process of z_far_expand is wrong, and the above process is directly used to cause mistaken deletion, resulting in a decrease in the quality of the target image

Method used

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  • Image processing method and device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] An image processing method, specifically comprising:

[0080] For at least one image block in the multi-view sub-block mosaic image, the information of the image block is obtained from the code stream, including: the width is, for example, 2048, the height is, for example, 1024, and the pixel at the upper left corner of the image block is in the multi-view block The position information (xp, yp) in the spliced ​​image is, for example, (0, 0), the position information (xs, ys) of the upper left pixel of the image block in the source view image is (0, 0), and the source view camera it belongs to The width_cam of the projection plane is, for example, 2048, the height_cam is, for example, 2048, and the field of view FOV_cam of the source camera is, for example, 180°×360°.

[0081] According to the width information width, height information height of the current image block and the camera parameters of the source view image, calculate the longitude span of the current image...

Embodiment 2

[0088] An image processing method, specifically comprising:

[0089] For at least one image block in the multi-view sub-block mosaic image, the information of the image block is obtained from the code stream, including: the width is, for example, 2048, the height is, for example, 1024, and the pixel at the upper left corner of the image block is in the multi-view block The position information (xp, yp) in the spliced ​​image is, for example, (0, 0), the position information (xs, ys) of the upper left pixel of the image block in the source view image is (0, 0), and the source view camera it belongs to The width_cam of the projection plane is, for example, 2048, the height_cam is, for example, 2048, and the field of view FOV_cam of the source camera is, for example, 180°×360°.

[0090] According to the width information width, height information height of the current image block and the camera parameters of the source view image, calculate the longitude span of the current image...

Embodiment 3

[0097] An image processing method, specifically comprising:

[0098] For at least one image block in the multi-view sub-block mosaic image, the information of the image block is obtained from the code stream, including: the width is, for example, 2048, the height is, for example, 1024, and the pixel at the upper left corner of the image block is in the multi-view block The position information (xp, yp) in the spliced ​​image is, for example, (0, 0), the position information (xs, ys) of the upper left pixel of the image block in the source view image is (0, 0), and the source view camera it belongs to The width_cam of the projection plane is, for example, 2048, the height_cam is, for example, 2048, and the field of view FOV_cam of the source camera is, for example, 180°×360°.

[0099] According to the width information width, height information height of the current image block and the camera parameters of the source view image, calculate the longitude span of the current image...

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Abstract

The invention discloses an image processing method and device. The method is used in the multimedia field, and is used for decoding and extracting the image from a multi-view sub-block spliced image or a code stream of a multi-view image and processing the image. According to the method, whether an image needs to be further divided or not is determined by extracting related information of the image and related information of a source viewpoint camera to which the image belongs, if so, division is executed, and sub-block images obtained through division are classified. According to the method provided by the invention, the screening accuracy can be improved, image residue in an invalid view angle domain is avoided, meanwhile, the problem of wrong screening occurring when the view angle is too large can be solved, the synthesis quality of the target image is ensured, and the benefit of complexity saving brought by sub-block screening is kept. The invention provides an image processing method and a corresponding device at the same time.

Description

technical field [0001] The patent of the present invention relates to the field of image processing, in particular to a method and device for processing images in multi-viewpoint images or videos. Background technique [0002] As a subjective evaluation, "immersion" refers to the viewer's perception of the virtual scene established and displayed by the multimedia system. As the capabilities of acquisition devices and display devices increase year by year, immersive media, as a visual multimedia that can bring viewers a strong sense of immersion, has become a research hotspot in industry and science for its encoding, transmission and rendering. [0003] With the increase of viewing freedom supported by immersive media, the visual immersion it brings to viewers has been significantly enhanced. In three-dimensional space, the viewing freedom of the viewer supports up to six degrees of freedom, including translation along the X, Y, and Z axes of the three-dimensional space and ...

Claims

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Application Information

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IPC IPC(8): H04N13/128H04N13/122H04N13/363
CPCH04N13/128H04N13/122H04N13/363
Inventor 虞露王楚楚
Owner ZHEJIANG UNIV
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