Video Metadata Watermarking Using Luminance Values
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Solution Overview
Problem
Current digital television systems face challenges in effectively distributing metadata, leading to operational inefficiencies and reduced functionality due to increased demands on system resources and data magnitudes, which can result in economic impacts and limited user benefits.
Innovation Solution
Embedding metadata as a watermark in video frames using luminance values, allowing for extraction by reception apparatuses, thereby ensuring metadata is delivered intact and visible to the television system without distracting the viewer, even under compression and decompression processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metadata is embedded as a watermark in video frames using luminance values, then metadata distribution effectiveness is improved, but system complexity increases
Solution Approach 1:
The patent merges metadata with video content by embedding it as a watermark directly into video frames using luminance values. This combining approach allows metadata to be transmitted alongside video content through the same channel, improving distribution effectiveness without requiring separate metadata transmission infrastructure.
Solution Approach 2:
The patent utilizes luminance values (a physical parameter of video pixels) to encode metadata symbols. By changing the luminance of specific pixels to represent binary or multi-valued metadata symbols, the system embeds information within the visual parameters of the video itself, making the metadata robust to compression while maintaining effectiveness.
2Adaptability or versatility
If enhanced system capability is implemented to support synchronized television widget functionality, then user benefits are improved, but control and management demands increase
Solution Approach 1:
The patent embeds metadata (including synchronization information for widgets) directly into the video stream in advance. This preliminary embedding allows reception apparatuses to automatically extract and act on the metadata without requiring complex real-time control systems, reducing management demands while enabling synchronized widget functionality.
3Adaptability or versatility
If data magnitude increases to support enhanced system functionality, then system capability is improved, but operational inefficiencies increase
Solution Approach 1:
The patent segments metadata into discrete symbols that are embedded within individual video frames or groups of frames. This segmentation allows the metadata to be processed independently from the video content, improving operational efficiency by enabling parallel processing and reducing the computational burden of handling large data magnitudes.
Data Source
AI summary
A method, non-transitory computer-readable storage medium, and reception apparatus for extracting metadata, and an information providing apparatus for providing the metadata. The method for extracting metadata includes processing, by circuitry of the reception apparatus, content that includes the metadata embedded therein. The metadata is embedded as a watermark in a first portion of a video frame of the content. The circuitry determines symbol values of the watermark from the video frame based on luminance values in pixels of the first portion of the video frame of the content to extract the metadata. At least one of the luminance values is less than 16.