3D Signal Color Bleeding Correction via Checkerboard Deinterleaving
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Solution Overview
Problem
Existing systems for delivering stereoscopic 3D content to home devices often result in poorly designed video encoding solutions due to a lack of guidance on the video encoding process, leading to subpar performance and issues like color bleeding artifacts, especially when converting between different formats without considering the checkerboard interleaving arrangement.
Innovation Solution
A system that includes a converter box or integrated solution within playback devices and displays to perform color correction and format conversion, recognizing patterns of color errors and applying appropriate correction schemas, and ensuring proper chroma upconversion and rescaling to maintain the integrity of 3D signals, thereby avoiding artifacts like color bleeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If color conversion is performed without considering the checkerboard interleaving arrangement, then conversion speed is improved, but color bleeding artifacts occur
Solution Approach 1:
The patent segments the color conversion process into two distinct phases: first deinterleaving the checkerboard multiplexed data into separate left and right view data, then performing color conversion on each view separately. This segmentation prevents color bleeding artifacts by ensuring that color conversion operations do not mix data from different views, while still maintaining efficient processing through specialized handling of each segment.
2Device complexity
If chroma upconversion is performed on multiplexed data without format consideration, then processing complexity is reduced, but manufacturing precision deteriorates
Solution Approach 1:
The patent applies preliminary action by performing deinterleaving before chroma upconversion. By separating the multiplexed data into distinct left and right view data beforehand, the subsequent chroma upconversion can be performed with high precision on each view independently, avoiding the precision losses that would occur if upconversion were attempted on the multiplexed data without prior separation.
3Ease of operation
If format conversion is performed without recognizing interleaving patterns, then ease of operation is improved, but reliability deteriorates
Solution Approach 1:
The patent incorporates feedback mechanisms that detect the presence of checkerboard multiplexed data patterns and automatically adjust the processing approach accordingly. The system monitors incoming data streams, identifies interleaved formats through pattern recognition, and triggers appropriate deinterleaving operations before format conversion, ensuring reliable 3D signal integrity while maintaining ease of operation through automatic detection and handling.
Data Source
AI summary
Conversion of interleaved data and/or correction of color samples or other data are corrected by recognizing an underlying arrangement or format of different data sets within a data stream and a conversion process applied that causes bleeding between the sets The data sets are, for example, separate channel views of a 3D display, and the corruption occurs, for example, upon up-conversion of color samples that take into account both views together rather than individually. The invention is embodied, for example, as part of a playback device, display, or as a stand alone converter box that corrects the corrupted samples by at least one of substitution, filtering, or interpolation with appropriately selected samples (e.g., neighboring samples of a same view). In one embodiment, the invention comprises a conversion from a received format (e.g., checkerboard) to a delivery format (e.g., native format of a 3D ready display).