Video Picture Encoding Using Transparency Map Specific Values
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Solution Overview
Problem
Current video encoding and decoding technologies face challenges in efficiently encoding and decoding video pictures for transparent screens, leading to increased production and transmission costs due to the need for multiple video signals for different screen types.
Innovation Solution
A method for encoding and decoding video pictures that involves using a transparency map to assign specific values to samples associated with transparent pixels, allowing for the encoding of a single video signal that can be rendered on various transparent screen types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple video signals are used for different screen types, then transparency display quality is improved, but production and transmission costs increase
Solution Approach 1:
The patent creates a universal video signal format that can be rendered on multiple types of transparent screens (LCD, OLED, MicroLED) without requiring separate encoding for each screen type. The transparency map with specific value assignments enables a single video signal to adapt to different display technologies, achieving multi-functionality and reducing the need for multiple specialized signals.
Solution Approach 2:
The patent changes the parameter representation of transparency by assigning specific out-of-range values (e.g., -1, 256, 1024) to transparent pixels in the transparency map. This parameter transformation allows the encoding system to distinguish transparent pixels through value ranges rather than requiring separate binary masks, enabling efficient compression while maintaining transparency information across different screen types.
2Measurement precision
If transparency metadata is explicitly signaled, then transparent pixel identification is improved, but rate cost increases
Solution Approach 1:
The patent merges the transparency information with the existing video picture data by using the luma or chroma sample values themselves to indicate transparency. Instead of separating transparency metadata into a distinct data stream, the transparency map is integrated into the video signal structure, allowing transparent pixel identification to occur during standard decoding processes without requiring additional dedicated bandwidth.
Solution Approach 2:
The patent transforms the transparency indication method by using specific out-of-range parameter values in the existing video sample structure. By assigning values like -1, 256, or 1024 (depending on bit depth) to transparent pixels, the system encodes transparency information within the normal video data parameters, avoiding the need for separate binary transparency masks and reducing overall bit rate requirements.
Data Source
AI summary
A method for encoding a video picture into a bitstream of encoded video picture data is provided. The video picture includes at least one component of samples representative of pixel values of a screen. The method includes: obtaining, from a transparency map, a modified video picture by assigning specific values (SV) to samples of one component (C) associated with transparent pixels, wherein the specific values (SV) are different of sample values of the component (C) associated with non-transparent pixels; and encoding the modified video picture.