Transmission Device Base Enhanced Stream Encoding
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Solution Overview
Problem
High frame rate image data transmission faces challenges in maintaining image quality due to increased motion vector search load and resulting image quality degradation, particularly in frame interpolation processes, which also increase receiver costs.
Innovation Solution
A transmission system that processes high frame rate image data by mixing and encoding base and enhanced frame rate data, using a preprocessor to generate base and enhanced streams, and a reception device to decode these streams efficiently, reducing prediction residue and improving prediction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If frame interpolation processing is performed on high frame rate image data, then image quality can be improved, but the computational load increases and causes image quality degradation
Solution Approach 1:
The patent divides the frame rate conversion process into two separate streams: a base stream containing down-sampled frames and an enhanced stream containing selected high frame rate frames. This segmentation allows receivers to process only the necessary stream based on their capabilities, reducing computational load while maintaining image quality options.
Solution Approach 2:
The patent enables dynamic selection of frame interpolation processing at the receiver side. Receivers can choose to perform frame interpolation on the base stream or use the enhanced stream directly, allowing adaptive computational load adjustment based on device capabilities and performance requirements.
2Manufacturing precision
If high frame rate image data is transmitted directly, then image quality is maintained, but the amount of data transmitted increases
Solution Approach 1:
The patent extracts only the essential high frame rate information needed for enhancement into a separate enhanced stream. Instead of transmitting all high frame rate data, only selected frames are extracted and transmitted in the enhanced stream, reducing data amount while preserving image quality options.
Solution Approach 2:
The patent transmits a complete base stream at normal frame rate plus a partial enhanced stream containing only the additional high frame rate frames needed for enhancement. This partial transmission approach reduces total data amount compared to transmitting full high frame rate data while still enabling quality maintenance when needed.
3Measurement precision
If frame interpolation is performed with high computational load, then accuracy of motion vector search is improved, but receiver cost increases
Solution Approach 1:
The patent segments the video data into base and enhanced streams, allowing receivers to choose their processing level. Low-cost receivers can process only the base stream with simpler motion vector search, while high-performance receivers can utilize the enhanced stream for more accurate motion vector search and frame interpolation.
Solution Approach 2:
The patent changes the processing parameters available to receivers by providing multiple stream options. Receivers can adjust their motion vector search accuracy and frame interpolation parameters based on their computational capabilities, allowing cost-effective implementations for different device classes while maintaining the option for high accuracy when needed.
Data Source
AI summary
High frame rate moving image data is satisfactorily transmitted.Mixing processing is performed in units of two temporally consecutive pictures in predetermined frame rate image data, and base frame rate image data is obtained. Image data of one picture in units of the two temporally consecutive pictures is extracted, and high frame rate enhanced frame image data is obtained. Prediction encoding processing of base frame rate image data is performed to the base frame rate image data, and a base stream is obtained. Prediction encoding processing with respect to the base frame rate image data is performed to the high frame rate enhanced frame image data, and an enhanced stream is obtained. A predetermined format container is transmitted including the base stream and the enhanced stream.