Predicted Picture Generation Using Reference View Depth
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Solution Overview
Problem
The existing methods for generating predicted pictures in video encoding/decoding processes rely heavily on depth information from both the reference and target views, leading to a significant data dependence and inefficiencies in encoding and decoding.
Innovation Solution
A method where the reference rectangular block of pixels is determined using the location of the target rectangular block and depth information of the reference view, without needing the depth picture of the target view, allowing forward projection to be performed using only the depth information of the reference view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If depth information from both reference view and target view is used to determine reference block and perform forward projection, then prediction accuracy is improved, but data dependence increases and encoding/decoding efficiency deteriorates
Solution Approach 1:
The patent extracts and removes the depth information requirement from the target view, keeping only the depth information from the reference view. This extraction eliminates the data dependence on target view depth while maintaining the forward projection functionality, thus resolving the contradiction between prediction accuracy and encoding efficiency.
Solution Approach 2:
The patent segments the depth information usage into two independent parts: depth information from reference view (retained) and depth information from target view (removed). This segmentation allows the system to maintain necessary prediction functionality while eliminating redundant data requirements, improving encoding and decoding efficiency.
2Measurement precision
If depth information from both views is simultaneously used in predicted picture generation, then prediction quality is improved, but device complexity increases
Solution Approach 1:
The patent extracts the unnecessary component (target view depth information) from the system, reducing data dependence and simplifying the processing architecture while retaining sufficient prediction quality through reference view depth information alone.
3Manufacturing precision
If reference block is determined using depth information from target view, then projection accuracy is improved, but encoding complexity increases
Solution Approach 1:
The patent removes the requirement for target view depth information in reference block determination, simplifying the encoding process. The reference block is determined using only reference view depth information and parameter information, reducing encoding complexity while maintaining adequate projection accuracy.
Data Source
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AI summary
Disclosed are a method and device for generating a predicted picture, the method comprising: determining a reference rectangular block of pixels according to parameter information which includes a location of a target rectangular block of pixels and/or depth information of a reference view; mapping the reference rectangular block of pixels to a target view according to the depth information of the reference view to obtain a projection rectangular block of pixels; and acquiring a predicted picture block from the projection rectangular block of pixels. The technical problem of relatively large dependence among the data brought by simultaneously employing the depth picture of the target view and the depth picture of the reference view in the process of generating the predicted picture in the prior art is solved, and the technical effects of reducing the dependence on the data and improving the encoding and decoding efficiency is achieved.