Color Component Block Prediction for High-Efficiency Image Coding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-resolution and high-quality image data requires high-efficiency encoding/decoding techniques to reduce the increased costs of transmission and storage associated with conventional methods.
Innovation Solution
The method involves deriving a prediction parameter using a first color component block to predict a second color component block, with restructuring based on block sizes and shapes, and utilizing intra prediction to enhance compression efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional image encoding methods are used for high-resolution images, then image quality is maintained, but transmission and storage costs increase
Solution Approach 1:
The patent changes the parameter of prediction precision by applying asymmetric interpolation methods (e.g., 1/4 pixel precision in horizontal direction, 1/8 pixel precision in vertical direction) to generate more accurate prediction blocks, thereby reducing residual data and improving compression efficiency while maintaining image quality
Solution Approach 2:
The patent uses prediction blocks copied from reference pictures (previous or subsequent frames) to reconstruct current picture blocks, reducing the amount of data that needs to be transmitted or stored by only encoding the difference between the original block and the predicted block
2Measurement precision
If higher resolution image data is transmitted or stored using conventional methods, then image quality improves, but transmission and storage costs increase
Solution Approach 1:
The patent modifies encoding parameters including block size partitioning, interpolation precision levels, and prediction modes to optimize the balance between resolution preservation and data reduction, enabling efficient encoding of high-resolution images
Solution Approach 2:
The patent applies different encoding strategies to different regions or blocks within the image, using asymmetric interpolation and varied prediction methods tailored to local characteristics, thereby achieving efficient compression across the entire high-resolution image
Data Source
AI summary
An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block and predicting the second color component block using the derived prediction parameter.