Image Reconstruction Parameter Recovery for Metadata Misalignment
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Solution Overview
Problem
Existing image reconstruction methods from decoded data face challenges with dynamic metadata transmission and alignment, particularly in professional production and distribution facilities, leading to issues like image flickering and undesirable effects when graphics or overlays are added, due to potential loss, corruption, or misalignment of metadata.
Innovation Solution
A method and device that check for lost, corrupted, or misaligned parameters in decoded image data, select a recovery mode based on processing information, and recover these parameters to ensure accurate reconstruction, using either explicit or implicit information data signaled in the bitstream, and applying pre-determined values for reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dynamic metadata is transmitted in professional production and distribution facilities, then image reconstruction quality can be improved, but parameter loss, corruption, or misalignment occurs leading to image flickering and undesirable effects
Solution Approach 1:
The patent applies preliminary action by checking the status of metadata parameters (whether they are lost, corrupted, or misaligned) before attempting image reconstruction. This early detection mechanism allows the system to identify parameter issues beforehand and select appropriate recovery modes, preventing image flickering and reconstruction failures that would occur without such preliminary verification.
Solution Approach 2:
The patent implements feedback by using information data signaled in the bitstream to monitor the state of metadata parameters during transmission and reconstruction. This feedback mechanism enables the system to detect parameter loss, corruption, or misalignment in real-time and dynamically adjust the reconstruction process by selecting suitable recovery modes, thereby maintaining reliable image reconstruction despite transmission challenges.
2Adaptability or versatility
If graphics or overlays are added to decoded image data, then visual information can be enhanced, but parameter misalignment occurs causing image flickering and undesirable effects
Solution Approach 1:
The patent applies preliminary action by checking whether metadata parameters remain aligned with the decoded image data after graphics or overlays have been added. This pre-reconstruction verification ensures that parameter misalignment is detected before it causes image flickering, allowing the system to select appropriate recovery modes and maintain precision even when the image content has been modified.
Solution Approach 2:
The patent implements dynamics by making the parameter checking and recovery mode selection adaptive to the current state of the image data. When graphics or overlays are added, the system dynamically adjusts by re-checking parameter alignment and selecting recovery modes suited to the modified content, thereby maintaining precision across varying image configurations.
3Productivity
If metadata parameters are recovered using pre-determined values, then reconstruction can proceed despite parameter loss, but image quality may be compromised compared to using original parameters
Solution Approach 1:
The patent applies partial action by selectively using pre-determined values only for the specific parameters that are lost, corrupted, or misaligned, rather than replacing all parameters. This approach allows reconstruction to proceed efficiently with the parameters that are available, while using pre-determined values only where necessary, thereby maintaining image quality to the greatest extent possible while ensuring productivity.
Solution Approach 2:
The patent implements parameter changes by transitioning from using original parameters to using pre-determined values specifically for affected parameters. This controlled parameter substitution allows the system to maintain reconstruction efficiency while minimizing quality loss, as only the necessary parameters are changed rather than the entire parameter set.
Data Source
AI summary
A method or device for reconstructing image data representative of original image data from decoded image data and parameters obtained from a bitstream is described. The parameters having been processed from the original image data. The method includes checking if parameters are lost, corrupted or not aligned with the decoded image data whose graphics or overlay is added to, when at least one of the parameters is lost, corrupted or not aligned with the decoded image data whose graphics or overlay is added to; selecting a recovery mode according to an information data indicating how the parameters have been processed; and recovering the at least one lost, corrupted or not aligned parameter by applying the selected recovery mode, the reconstruction of image data then taking also into account the recovered parameters.