Layered Video Reception With Windowed Blending for Stable Motion
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Solution Overview
Problem
Conventional image decoding at high frame rates results in strobing due to incomplete time continuity, leading to degraded moving image quality, and existing blending techniques risk creating double images in certain parts of the image.
Innovation Solution
A transmission/reception system that processes image data using a base and enhanced layer, where the base layer undergoes blending within a window range defined by motion thresholds, and the enhanced layer is used for reverse blending to maintain image stability at both normal and high frame rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If entire picture is subjected to blending processing, then strobing degradation is reduced, but parts that are originally to be clearly displayed are displayed as double images
Solution Approach 1:
The picture is divided into multiple blocks, and blending processing is selectively applied to specific blocks based on motion characteristics. This segmentation allows the system to apply blending only where needed (in blocks with motion) while leaving other blocks (without motion or with minimal motion) unchanged, thus preventing double images in static regions while reducing strobing in moving regions.
Solution Approach 2:
Different processing strategies are applied to different regions of the picture based on local motion characteristics. Blocks with significant motion undergo blending processing to reduce strobing, while blocks with minimal or no motion are left unprocessed to maintain clear, stable images. This local quality approach ensures that each region is processed according to its specific requirements.
2Device complexity
If a receiver performs decoding at conventional broadcast frame rate, then processing complexity is reduced, but time continuity is impaired and strobing occurs
Solution Approach 1:
Blending processing is performed in advance on the encoded picture blocks before transmission. This preliminary action prepares the image data so that when the receiver decodes at conventional frame rates, the blending has already been applied, maintaining time continuity and reducing strobing without requiring complex real-time processing at the receiver端.
3Reliability
If picture blending is performed at high frame rate, then strobing is reduced, but device complexity increases due to additional processing requirements
Solution Approach 1:
Instead of applying blending processing to the entire picture, the system applies blending only to specific blocks that exhibit motion characteristics. This partial action approach reduces the overall processing complexity while still effectively reducing strobing in the regions where it occurs, avoiding the need for full-picture blending processing.
Data Source
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AI summary
To allow a reception side to obtain stable moving images. Image data on each picture of a base layer in which blending processing has been performed only within a range of a predetermined window and image data on each picture of an enhanced layer are received. Display image data is obtained by using, depending on a display capability, only the image data on each picture of the base layer or both the image data on each picture of the base layer and the image data on each picture of the enhanced layer. A strobing degradation within the range of the predetermined window of the layer at the basic frame frequency can be avoided, and parts in other ranges that are originally to be clearly displayed can be prevented from being displayed as double images.