Per-Picture Resolution Control for Video Decoding Efficiency
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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 encoded and decoded, allowing for flexible resolution adjustment based on picture type and enable/disable flags.
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 and service conditions, allowing the system to optimize between image quality and processing efficiency for each individual picture rather than using a static high resolution for all pictures.
Solution Approach 2:
The patent changes the resolution parameter adaptively based on picture characteristics and service conditions. By modifying the resolution parameter on a per-picture basis rather than using a constant high resolution, the system achieves better encoding efficiency while maintaining acceptable image quality for diverse content types.
2Productivity
If fixed high resolution is used for all pictures, then encoding efficiency improves, but adaptability to diverse service conditions deteriorates
Solution Approach 1:
The system transitions from a static fixed-resolution approach to a dynamic adaptive-resolution approach. The resolution is adjusted on a per-picture basis according to actual service conditions and picture characteristics, enabling the system to adapt to diverse scenarios while maintaining efficient encoding for each specific picture.
Solution Approach 2:
The resolution parameter is changed adaptively based on service conditions and picture content. This allows the system to optimize encoding efficiency for each specific picture while maintaining versatility across different service scenarios, rather than using a one-size-fits-all fixed resolution.
3Productivity
If resolution is reduced for smooth textures to reduce data processing, then image quality deteriorates, but processing requirements are reduced
Solution Approach 1:
The patent applies local quality by adjusting resolution on a per-picture basis according to the specific characteristics of each picture. For pictures with smooth textures, lower resolution is used to reduce processing requirements, while higher resolution is maintained for pictures requiring fine detail, thus optimizing the balance between processing load and image quality locally for each picture.
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.