Video Stream Banding Suppression Control
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Solution Overview
Problem
Existing image transmitting/receiving systems face challenges in effectively executing banding suppression processing on the receiving side, as it is not always necessary or properly controlled, leading to potential banding artifacts in images with reduced gradation numbers.
Innovation Solution
A transmission device that inserts banding suppression processing information into the video stream, including details on whether processing has been applied, the type of processing, and the gradation number, allowing a reception device to control and apply necessary banding suppression processing based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If banding suppression processing is executed on the receiving side without proper control, then image quality may be improved, but device complexity and processing overhead increase
Solution Approach 1:
The transmission device performs preliminary actions by inserting banding suppression processing information into the video stream before transmission. This allows the reception device to make informed decisions about whether to apply banding suppression processing, avoiding unnecessary processing and reducing complexity while maintaining image quality when needed.
Solution Approach 2:
The system implements feedback by including information about banding suppression processing in the video stream metadata. The reception device uses this feedback information to determine whether banding suppression processing has already been applied or should be applied, enabling intelligent control of the processing based on the actual state of the image data.
2Object-affected harmful factors
If banding suppression processing is always applied, then banding artifacts are reduced, but processing time and computational resources increase
Solution Approach 1:
Instead of always applying banding suppression processing, the system applies it partially or selectively based on the information in the video stream. The reception device determines whether to apply the processing by checking the inserted information, applying the processing only when necessary to reduce banding artifacts while avoiding unnecessary processing time and computational resources.
3Loss of energy
If gradation number is reduced for efficient transmission, then bandwidth usage decreases, but banding artifacts increase
Solution Approach 1:
The patent introduces an intermediary mechanism - the banding suppression processing information inserted into the video stream - that mediates between the need for efficient transmission (reduced gradation number) and the need to avoid banding artifacts. This information acts as a signal that enables the reception device to apply appropriate processing to counteract the banding effects of gradation reduction while maintaining transmission efficiency.
Data Source
AI summary
The technology is directed to appropriately executing banding suppression processing on a receiving side. A container having a predetermined format and including a video stream including encoded image data is transmitted. In the video stream, information related to banding suppression processing for the image data is inserted. The information includes, for example, information indicating whether the banding suppression processing has been applied to the image data, and information indicating whether banding suppression processing should be applied to the image data. On the receiving side, the banding suppression processing can be controlled based on the information related to banding suppression processing transmitted from the transmitting side, and the banding suppression processing can be appropriately executed.