3D Video Frame Generator Resolution Control
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Solution Overview
Problem
Conventional 3D video processing techniques result in resolution degradation and distortion of 3D video frames due to sub-sampling and up-scaling methods, affecting the quality of stereoscopic video playback.
Innovation Solution
A method and apparatus for processing 3D video data that includes video input units, a 3D video frame generator, encoder, and scaler, which detect and adjust the resolution of video frames to match the display device's resolution without sub-sampling, using composition and resolution control information to ensure accurate playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If 1/2 sub-sampling is performed on original video frames to generate 3D video frames, then the processing complexity is reduced, but the resolution of the 3D video is degraded
Solution Approach 1:
The patent applies preliminary action by performing sub-sampling on the original video frames before combining them to create the 3D video frame. This advance processing step reduces the data volume that needs to be handled during the combining operation, thereby reducing processing complexity while maintaining a systematic approach to 3D video generation
Solution Approach 2:
The patent segments the original video frames by applying 1/2 sub-sampling, dividing the full-resolution frames into half-resolution frames. This segmentation reduces the amount of data that needs to be processed when combining multiple views into a single 3D video frame, directly addressing the processing complexity reduction goal
2Adaptability or versatility
If up-scaling is performed on separated video frames to match display device resolution, then the video frames can be displayed on various devices, but distortion occurs in the 3D video playback
Solution Approach 1:
The patent applies preliminary action by including resolution control information in the 3D video data that indicates whether the video frames were originally full-resolution or sub-sampled. This advance information allows the display device to perform appropriate processing (or no processing) to avoid distortion, while still maintaining adaptability to different display resolutions
Solution Approach 2:
The patent implements feedback by embedding resolution control information within the 3D video data stream itself. This feedback mechanism informs the display device about the original resolution characteristics of the video frames, enabling the device to adjust its processing accordingly to prevent distortion while maintaining display compatibility
Data Source
AI summary
A plurality of video input units generate video frames and provide shooting characteristics. A 3D video frame generator creates a 3D video frame by combining a plurality of video frames, which are provided from the plurality of video input units, respectively, and provides 3D video frame composition information indicating a composition type of the plurality of video frames included in the 3D video frame, and resolution control information indicating adjustment/non-adjustment of resolutions of the video frames. A 3D video frame encoder outputs an encoded 3D video stream by encoding the 3D video frame provided from the 3D video frame generator. A composition information checker checks 3D video composition information including the shooting information, the 3D video frame composition information, and the resolution control information. A 3D video data generator generates 3D video data by combining the 3D video composition information and the encoded 3D video stream.