Video Signal Inter Prediction Using Merge Candidate Selection
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Solution Overview
Problem
Existing video signal processing methods lack efficiency in reducing transmitted prediction information and accurately predicting prediction information, particularly in inter prediction, due to insufficient utilization of merging candidate units and inefficient signaling methods.
Innovation Solution
The method involves recursively partitioning coding units into smaller units, using a merging mode to enhance motion prediction compensation by selecting appropriate merging candidate units based on the current unit's characteristics and neighbor areas, and adaptively determining units to be merged, reducing the need for transmitting prediction information only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional inter prediction methods are used to transmit motion information for each coding unit, then prediction accuracy is maintained, but the amount of transmitted prediction information increases and complexity increases
Solution Approach 1:
The patent applies merging by combining multiple coding units into a single prediction unit for inter prediction. Instead of transmitting motion information for each individual coding unit, the method transmits a single set of motion information for the entire prediction unit, thereby reducing the amount of transmitted prediction information while maintaining prediction accuracy through the merged representation.
Solution Approach 2:
The patent implements universality by creating a prediction unit that serves multiple coding units simultaneously. A single prediction unit with unified motion information can be applied to multiple coding units within it, eliminating the need for separate motion information transmission for each coding unit and reducing overall redundancy.
2Measurement precision
If motion information is acquired for each coding unit independently, then prediction accuracy is maintained, but computational complexity increases
Solution Approach 1:
The patent reduces computational complexity by merging the motion information acquisition process for multiple coding units into a single operation. Instead of independently acquiring motion information for each coding unit, the method acquires one set of motion information for the entire prediction unit, thereby maintaining prediction accuracy while significantly reducing the computational burden.
3Ease of manufacture
If coding units are not partitioned into prediction units, then processing is simpler, but prediction accuracy and coding efficiency decrease
Solution Approach 1:
The patent applies segmentation by dividing a prediction unit into multiple coding units for organizational purposes, while maintaining the prediction unit as a unified entity for motion estimation. This segmentation allows for structured processing and management of video data without sacrificing the coding efficiency benefits of merged prediction, as the prediction unit structure enables shared motion information across multiple coding units.
Data Source
AI summary
The present invention discloses a method and apparatus for encoding or decoding a video signal. The method for processing a video signal according to the present invention uses a merging mode in which prediction information on a neighbor unit is used instead of transmitting prediction information on the present unit, so as to improve coding efficiency. In this case, the number of available candidate units for merging among the units in a predetermined position is determined, and information for the merging mode is acquired on the basis of the number of the available candidate units for merging. The unit to be merged is determined using the information for the merging mode, and prediction information on the unit to be merged is acquired. The prediction value for the present unit is acquired using the prediction information on the unit to be merged, and the present unit is restored using the acquired prediction value.