Per-Picture Video Decoding With Adaptive Resolution Setting

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Solution Overview

Problem

Existing video encoding and decoding technologies face inefficiencies due to increasing video data volumes, necessitating improved encoding and decoding methods that can adapt to diverse service conditions and handle varying resolutions effectively.

Innovation Solution

Adaptive resolution setting on a per-picture basis, where the video decoding apparatus decodes maximum and current picture resolution information from the bitstream and sets the current picture resolution accordingly, allowing for flexible resolution adjustments based on picture type and enable/disable flags.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If video resolution and picture size are increased to improve image quality, then encoding and decoding efficiency deteriorates due to larger data volume

Engineering Contradiction:

Improveimage qualityVSAvoidencoding and decoding efficiency

Core Design Contradiction:

Measurement precisionVSProductivity

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.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies local quality by treating each picture independently in terms of resolution setting. Instead of applying a uniform resolution to all pictures in a sequence, the system determines the appropriate resolution for each picture based on its specific characteristics (such as texture complexity), thereby allocating computational resources more efficiently.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If fixed resolution is used for entire sequence, then adaptability to diverse service conditions deteriorates

Engineering Contradiction:

Improveadaptability to service conditionsVSAvoidresolution setting complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system transitions from a static, fixed-resolution model to a dynamic, adaptive-resolution model. The resolution is determined on a per-picture basis according to actual service conditions and content characteristics, enabling the system to adapt to diverse scenarios without requiring complex manual configuration.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system performs self-adjustment by automatically determining the appropriate resolution for each picture based on its characteristics. The decoder independently analyzes each picture and sets the resolution without external intervention, making the system self-adaptive to varying service conditions.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12634481B2Method for adaptively setting resolution, and image decoding apparatus

Publication Date: 2026.05.19 SK TELECOM CO LTD

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.