Combined Prediction Blocks for High-Definition Video Compression
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Solution Overview
Problem
The increasing demand for high-definition video services has led to significant challenges in data volume, with existing video compression standards like HEVC revealing limitations, necessitating improved video encoding and decoding methods to enhance compression performance.
Innovation Solution
The proposed solution involves a video encoding and decoding method that utilizes advanced prediction modes, including inter and intra prediction techniques, transform methods, and filtering processes to optimize block partitioning and processing units, allowing for more efficient video compression and decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HEVC compression standard is used, then compression performance is improved (about twice as high as H.264/AVC), but performance limitations are revealed as display panels get bigger and video quality requirements increase
Solution Approach 1:
The current block is divided into multiple prediction blocks (first prediction block and second prediction block) to enable different prediction modes to be applied to different regions. This segmentation allows the patent to overcome HEVC's performance limitations by processing large blocks through multiple smaller predictive units, improving both compression efficiency and adaptability to high-definition video services.
2Productivity
If advanced prediction modes and transform techniques are used, then video compression efficiency is enhanced, but device complexity increases
Solution Approach 1:
The patent dynamically selects between different prediction modes (intra prediction for first prediction block, inter prediction for second prediction block) based on the characteristics of each block. This dynamic approach optimizes compression efficiency for each region while managing overall processing complexity through adaptive mode selection rather than uniformly applying complex algorithms to all blocks.
Data Source
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AI summary
An image decoding method according to the present invention may comprise the steps of: determining whether a combined prediction mode is applied to a current block; when the combined prediction mode is applied to the current block, obtaining first and second prediction blocks with respect to the current block; and, on the basis of a calculation of a weighted sum of the first and second prediction blocks, obtaining a third prediction block with respect to the current block.