Intra Block Prediction Using MIP Flags for Higher Coding Efficiency
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Solution Overview
Problem
The increasing demand for high-resolution and high-quality images/videos, particularly in immersive media formats, leads to higher transmission and storage costs due to increased bit amounts, necessitating a more efficient image/video compression technique.
Innovation Solution
An image coding method utilizing matrix-based and IPS-based intra prediction techniques, including deriving intra prediction modes for target blocks based on variable MIP flags, to enhance compression efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-resolution and high-quality images/videos are transmitted or stored, then image quality and resolution are improved, but transmission cost and storage cost increase due to increased bit amount
Solution Approach 1:
The patent segments the image into blocks and applies different prediction methods to different blocks. Intra prediction is applied to certain blocks while inter prediction is applied to others, allowing optimized compression for each region based on its characteristics. This segmentation enables better compression efficiency without sacrificing overall image quality.
Solution Approach 2:
The patent changes prediction parameters dynamically based on block characteristics. It selects between intra prediction and inter prediction modes, adjusts prediction directions, and modifies prediction strength according to the specific block content and position, thereby optimizing the balance between compression efficiency and quality preservation.
2Productivity
If conventional wired/wireless broadband lines are used for image transmission, then transmission capability is maintained, but transmission cost increases for high-resolution data
Solution Approach 1:
The patent extracts and removes redundant information from the image data through advanced compression techniques. By applying both intra prediction (for spatial redundancy within blocks) and inter prediction (for temporal redundancy between frames), it extracts only the essential information needed for quality reconstruction, significantly reducing the bit amount for transmission.
Solution Approach 2:
The patent performs compression and redundancy removal before transmission. By pre-compressing the image data using the dual prediction approach, the actual transmission requires much less bandwidth, making the transmission process more efficient and cost-effective while maintaining high quality.
3Productivity
If existing storage media are used for image storage, then storage capability is maintained, but storage cost increases for high-resolution data
Solution Approach 1:
The patent extracts and removes redundant information through compression before storage. By applying intra prediction to eliminate spatial redundancy and inter prediction to eliminate temporal redundancy, it reduces the amount of data that needs to be stored, thereby reducing storage costs while maintaining the ability to store high-resolution images.
Solution Approach 2:
The patent performs compression before storage by pre-removing redundancy through prediction techniques. This preliminary compression action reduces the data volume that needs to be stored, making existing storage media more cost-effective for high-resolution content while preserving full storage capability.
4Device complexity
If intra prediction is applied to all blocks, then prediction simplicity is maintained, but coding efficiency decreases due to lack of adaptability
Solution Approach 1:
The patent makes the prediction system dynamic by allowing it to adapt between intra prediction and inter prediction modes based on block characteristics. It dynamically selects the most appropriate prediction method for each block, adjusting prediction directions and strengths according to actual image content, thereby optimizing coding efficiency without excessive complexity.
Solution Approach 2:
The patent changes prediction parameters dynamically - selecting between different prediction modes (intra/inter), adjusting prediction directions, and modifying prediction strengths based on block position, content, and characteristics. This dynamic parameter adjustment optimizes coding efficiency while keeping the overall system manageable through standardized decision criteria.
Data Source
AI summary
An image decoding method according to the present document comprises the steps of: receiving an intra-MIP syntax element for a first target block; deriving the value of the intra-MIP syntax element; setting a variable MIP flag for the preset specific area, which is the same as the area of the first target block, on the basis of the value of the intra-MIP syntax element; deriving an intra-prediction mode of the second target block on the basis of the variable MIP flag; and deriving a prediction sample of the second target block on the basis of the intra-prediction mode of the second target block.