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image coding

An image and coding technology, applied in the field of image coding, can solve problems such as large image distortion, different geometric distortions, and reduced coding performance

Active Publication Date: 2020-09-25
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a mapping process may introduce large distortions to the image
Also, different parts of a moving object may have different geometric distortions
Such distortions can significantly degrade the performance of the encoding

Method used

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Embodiment Construction

[0010] The present disclosure will now be discussed with reference to several example implementations. It should be understood that these implementations are discussed only to enable those of ordinary skill in the art to better understand and thus enable the present disclosure, and not to imply any limitation on the scope of the subject matter.

[0011] As used herein, the term "comprising" and variations thereof are to be read as open-ended terms meaning "including but not limited to". The term "based on" is to be read as "based at least in part on". The terms "an implementation" and "an implementation" are to be read as "at least one implementation". The term "another implementation" is to be read as "at least one other implementation". The terms "first", "second", etc. may refer to different or the same object. Other definitions, both express and implied, may also be included below. Definitions of terms are consistent throughout the specification unless expressly indica...

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PUM

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Abstract

In this disclosure, methods, devices and computer-readable media for image and / or video encoding are presented. According to the method, in response to a source image being mapped to a destination image, determining the influence of at least one destination pixel on the mapping based on at least one source pixel in the source image and at least one destination pixel in the destination image, at least one source pixel is mapped to at least one destination pixel. A distortion caused by encoding is then determined based at least on the contribution of at least one pixel of interest to the mapping. Next, encoding parameters for encoding the target image are determined based on the distortion.

Description

Background technique [0001] With the development of camera arrays, head-mounted displays, and sensors to track the position of the head, the application of omnidirectional video has emerged to provide users with a visually immersive experience. Omnidirectional video usually consists of multiple spherical images. Omni-directional video consisting of multiple spherical images is difficult to compress because traditional image and / or video coding systems usually take rectangular images as input. Therefore, in order to compress omnidirectional video, it is usually necessary to map a spherical image into a rectangular image. However, such a mapping process may introduce large distortions to the image. Furthermore, different parts of a moving object may have different geometric distortions. Such distortions can significantly degrade the performance of the encoding. Contents of the invention [0002] According to the implementation of the present disclosure, an encoding method,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N13/161H04N13/204H04N13/327H04N13/246H04N19/154H04N19/157H04N19/182
CPCH04N19/154H04N19/157H04N19/182H04N19/103H04N19/115H04N19/119H04N19/12H04N19/124H04N19/147H04N19/167H04N19/176H04N19/19H04N19/597
Inventor 许继征李一鸣
Owner MICROSOFT TECH LICENSING LLC