Adaptive Picture Resolution Control in Video Decoding Bitstreams
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Solution Overview
Problem
Existing video compression techniques struggle with increasing data volumes due to rising picture sizes, resolutions, and frame rates, necessitating improved encoding and decoding efficiency.
Innovation Solution
Adaptive resolution setting on a per-picture basis, where maximum and current picture resolutions are dynamically adjusted, allowing for flexible video encoding and decoding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If video resolution and picture size are increased to improve image quality, then encoding and decoding efficiency deteriorates due to larger data volume
Solution Approach 1:
The patent applies dynamics by making the resolution setting adaptive rather than fixed. The resolution is dynamically adjusted on a per-picture basis according to the actual content characteristics, allowing the system to optimize between image quality and processing efficiency for each individual picture rather than using a static resolution for the entire sequence.
Solution Approach 2:
The patent applies local quality by treating each picture differently based on its specific characteristics. Instead of applying a uniform resolution to all pictures in a sequence, the system determines the appropriate resolution for each picture individually, allowing high resolution for pictures with complex textures and lower resolution for pictures with smooth textures.
2Adaptability or versatility
If fixed resolution is used for entire sequence, then adaptability to diverse service conditions deteriorates
Solution Approach 1:
The system transitions from a static, fixed-resolution model to a dynamic, adaptive resolution model. The resolution is determined dynamically for each picture based on its characteristics, enabling the system to adapt to diverse service conditions and content types without requiring complex manual configuration.
Solution Approach 2:
The system performs self-service by automatically determining the appropriate resolution for each picture based on its own characteristics. The decoder analyzes the picture content and autonomously selects the optimal resolution, eliminating the need for external intervention or complex setup procedures to adapt to different service conditions.
Data Source
AI summary
A video decoding apparatus and a method for adaptively setting a resolution are disclosed. According to one embodiment of the present invention, a method for adaptively setting a resolution on a per-picture basis comprises the steps of: decoding maximum resolution information from a bitstream; decoding, from the bitstream, resolution information about a current picture; and setting the resolution of the current picture on the basis of the maximum resolution information or the resolution information, wherein the resolution information has a size less than or equal to that of the maximum resolution information.