Multi-View Video Decoding Motion Inheritance
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Solution Overview
Problem
High-resolution and high-quality 3D video data requires significant storage and transfer costs due to its large size, and existing video coding techniques are inefficient in encoding and decoding multi-view videos with high correlation between views.
Innovation Solution
A method and apparatus for reconstructing information of a current view based on another view's motion information, inheriting motion information from a texture view to a depth view, and deriving motion information by the unit of sub-blocks or prediction blocks to enhance video coding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution and high-quality video data is used, then video quality is improved, but storage cost and transfer cost increase
Solution Approach 1:
The video data is segmented into multiple views (left view, right view, depth view) that can be independently processed and encoded. By dividing the 3D video into separate view components, the system can apply targeted compression techniques to each segment, reducing overall data size while preserving quality
Solution Approach 2:
The patent uses motion information copying from texture pictures to depth pictures. Motion vectors and other motion-related parameters are copied from the texture view to the depth view, eliminating the need to store redundant motion information separately and significantly reducing data size
2Ease of manufacture
If existing video coding techniques are used for multi-view videos, then implementation is simple, but coding efficiency is poor
Solution Approach 1:
The patent merges the encoding of texture pictures and depth pictures by sharing common motion information. The motion compensation process for depth pictures is combined with texture picture processing, allowing both views to be encoded together using shared parameters and reducing redundant computations
Solution Approach 2:
Motion information is derived and prepared in advance during texture picture decoding, before depth picture encoding begins. This preliminary derivation of motion vectors and compensation parameters enables faster depth picture processing without requiring complex real-time calculations
Data Source
AI summary
The present invention relates to a video decoding apparatus and a method for decoding a multi-view video, and the video decoding apparatus according to the present invention comprises: an entropy-decoding unit for entropy-decoding a bitstream and outputting video information required for decoding a current block in a depth picture; a memory for saving pictures referenced when decoding the current block; and a prediction unit for inducing a prediction sample of the current block, by using motion information of a texture picture within the same view as motion information of the current block.