TCON Color Calibration LUT Data Volume Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display apparatuses require large-capacity RAM and SRAM for color calibration look-up tables due to high data volumes, leading to increased manufacturing costs for TCON chips.
Innovation Solution
The proposed image processing device and method reduce data volume by using a look-up table that records calibration RGB difference values instead of calibration RGB values, allowing for color depth conversion and interpolation to determine calibration values, enabling the use of smaller RAM capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the look-up table stores complete calibration RGB values for each sampling RGB value, then color calibration accuracy is maintained, but the data volume of the look-up table increases significantly
Solution Approach 1:
The patent extracts only the essential calibration information (difference values) from the complete calibration RGB values and stores only these extracted differences in the look-up table, rather than storing the entire calibration values, thereby reducing data volume while preserving calibration accuracy
Solution Approach 2:
The patent transforms the storage parameter from complete calibration RGB values to calibration difference values (deltas), changing the data representation format to achieve compact storage while maintaining the ability to reconstruct accurate calibration values through simple addition operations
2Measurement precision
If the TCON chip uses large-capacity RAM and SRAM to store the look-up table, then color calibration can be performed accurately, but the manufacturing cost of the TCON chip increases
Solution Approach 1:
The patent creates a compact copy of the calibration data in difference format that occupies minimal memory space, replacing the need for large-capacity RAM/SRAM with a small look-up table that can be stored in efficient, low-cost memory resources within the TCON chip
Solution Approach 2:
By changing the data representation to difference values, the patent enables the use of smaller, more cost-effective memory resources in the TCON chip while maintaining full color calibration functionality, directly reducing manufacturing costs
Data Source
AI summary
The present application discloses an image processing device and method, and relates to the technical field of color calibration. The device of the present application includes: an acquisition unit, configured to acquire an image to be displayed, the image to be displayed containing a plurality of pixel points; a first determination unit, configured to determine a converted RGB value corresponding to each of the pixel points according to an original RGB value corresponding to each of the pixel points; a second determination unit, configured to determine a calibration RGB difference value corresponding to each of the pixel points according to the converted RGB value corresponding to each of the pixel points and a target look-up table; a third determination unit, configured to determine a calibration RGB value corresponding to each of the pixel points according to the converted RGB value and the calibration RGB difference value corresponding to each of the pixel points; and an output unit, configured to output and display the image to be displayed according to the calibration RGB value corresponding to each of the pixel points.