Method and system for compressing data implemented by computer, and storage medium

A storage medium and computer technology, applied in computing, stereo systems, image data processing, etc., can solve problems related to damage, huge amount of FVV data, and limited FVV usage scenarios

Active Publication Date: 2019-08-23
JJK HLDG LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the FVV data volume is extremely large, requiring storage and / or transmission of mesh and texture data for each frame (whereas regular video data is only an array of pixels)
This can hurt related performance and / or limit the usage scenarios of FVV

Method used

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  • Method and system for compressing data implemented by computer, and storage medium
  • Method and system for compressing data implemented by computer, and storage medium
  • Method and system for compressing data implemented by computer, and storage medium

Examples

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Embodiment Construction

[0017] Certain embodiments of the invention relate to techniques for the compression of grid-based video data (also referred to as 3D video data), including but not limited to FVV data. Embodiments described herein take as input uncompressed ("raw") 3D video data comprising a sequence of frames, each frame comprising geometric data (e.g., a triangle mesh or other mesh) and texture map. The input sequence of frames is divided into "segments", such that the grid topology is consistent across all frames within a given segment. For example, a mesh can deform within a segment, but the number and associativity of vertices do not change within the segment; a sequence of meshes with a consistent topology is called a Consistent Mesh Sequence (CMS), and a segment can include multiple CMS (e.g. render multiple objects). It should be understood that mesh topology need not be consistent across segments. After identifying a fragment with a CMS, a consistent texture atlas (CTA) can be cre...

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PUM

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Abstract

The present invention provides a method and system for compressing data implemented by a computer, and a storage medium. Mesh-based raw video data (or 3D video data) includes a sequence of frames, each of which includes geometry data (e.g., triangle meshes or other meshes) and texture map(s) defining one or more objects. The raw 3D video data is segmented based on consistent mesh topology across frames. For each segment, a consistent mesh sequence (CMS) is defined and a consistent texture atlas (CTA) is generated. The CMS and CTA for each segment are compressed and stored as compressed data files. The compressed data files can be decompressed and used to render displayable images.

Description

technical field [0001] The invention relates to the compression of general three-dimensional image data, in particular to the dynamic compression of map models based on local temporal consistency. Background technique [0002] Traditionally, digital video data consists of a series of images, or frames, where the content of each frame determines the presentation of a two-dimensional (2D) array of pixels on a display device. Many techniques have been proposed for compressing such data for efficient storage and transmission. Pixel-based image data is useful for some forms of video presentation; however, such data is not suitable for virtual reality (VR), augmented reality (AR), or other immersive video experiences in which the viewer becomes part of the scene. [0003] Free viewpoint video (FVV) enables a more immersive video experience. FVV data typically represents each frame as a three-dimensional (3D) scene including one or more three-dimensional geometric objects, rather...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/106H04N13/194H04N19/184H04N19/139
CPCH04N13/106H04N13/194H04N19/184H04N19/139H04N13/161G06T9/001H04N19/20H04N19/54G06T15/04G06T17/205H04N13/111G06T2219/00G06T17/20G06T2219/20G06T17/10
Inventor 李众杨杰胜
Owner JJK HLDG LLC
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