Mosaic Image Data White Balance Correction Compression Control
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Solution Overview
Problem
Existing image processing systems face issues with data compression of mosaic image data, leading to errors in white balance correction and deterioration in image quality, particularly when recording and editing, as they require high-speed and large-capacity recording media and increase system processing load.
Innovation Solution
An image processing apparatus with a white balance correction unit and a compression unit, where the control unit manages the white balance correction based on the compression state, invalidating it during uncompressed recording and enabling it during compressed recording, and adjusting the correction strength based on the compression ratio to minimize data loss and maintain image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If compression processing is applied to mosaic image data, then data amount is reduced and recording media requirements are lowered, but error is produced in the signal and color reproducibility deteriorates
Solution Approach 1:
The patent applies preliminary action by performing white balance correction on the mosaic image data before compression processing. This preliminary correction establishes accurate color relationships in the R, G, and B signals prior to compression, so that even when compression introduces some error, the color reproduction remains accurate. The control unit invalidates subsequent white balance correction during development since it has already been applied beforehand.
Solution Approach 2:
The patent implements beforehand cushioning by pre-applying white balance correction to compensate for potential compression errors. By correcting the color signals before compression, the system creates a buffer against the degradation that will occur during compression, ensuring that the final image maintains color accuracy despite the data reduction process.
2Manufacturing precision
If white balance correction is performed in advance on compressed mosaic image data, then color reproducibility is improved, but error is amplified during subsequent development
Solution Approach 1:
The patent applies preliminary action by performing white balance correction on the mosaic image data before compression processing. This preliminary correction establishes accurate color relationships in the R, G, and B signals prior to compression, so that even when compression introduces some error, the color reproduction remains accurate. The control unit invalidates subsequent white balance correction during development since it has already been applied beforehand.
3Manufacturing precision
If compression is set to off, then signal accuracy is maintained, but data amount becomes large requiring high-speed and large-capacity recording media
Solution Approach 1:
The patent applies preliminary action by performing white balance correction on the mosaic image data before compression processing. This preliminary correction establishes accurate color relationships in the R, G, and B signals prior to compression, so that even when compression introduces some error, the color reproduction remains accurate. The control unit invalidates subsequent white balance correction during development since it has already been applied beforehand.
4Ease of operation
If negative white balance gain is applied during development, then white balance adjustment is achieved, but coloring occurs in saturated portions and color reproduction deteriorates
Solution Approach 1:
The patent applies preliminary action by performing white balance correction on the mosaic image data before compression processing. This preliminary correction establishes accurate color relationships in the R, G, and B signals prior to compression, so that even when compression introduces some error, the color reproduction remains accurate. The control unit invalidates subsequent white balance correction during development since it has already been applied beforehand.
Data Source
AI summary
An image processing apparatus comprises: a white balance correction unit configured to perform a white balance correction by amplifying at least one color signal in relation to mosaic image data; a compression unit configured to compress the mosaic image data; and a control unit configured to control at least the white balance correction unit and the compression unit, wherein the control unit in a case where compression by the compression unit is set to be off, controls the white balance correction to be substantially invalid, and outputs the mosaic image data, and in a case where compression by the compression unit is set to be on, controls the white balance correction to be valid, and outputs the mosaic image data after the white balance correction.