This technology is a device and method that creates an optical illusion by converting RGB video signals into brightness (Y) and chrominance (UV) signals, performing histogram equalization only on the brightness signal, and then re-averaging the brightness based on the median intensity of the equalized image.
Because RGB video signals have strong inter-component correlation, it has been difficult to adjust brightness or color by manipulating a single component, requiring complex calculations across all components. Existing image quality enhancement processes, such as contour enhancement or gamma correction after color space conversion, have focused on improving image quality metrics without considering the visual comfort experienced by the viewer.
This technology equalizes the Y signal through histogram generation, cumulative distribution function calculation, and transformation function calculation. It then adds the difference between 0.5 and the average intensity to the result to adjust the overall brightness to a median level before converting it back to RGB for display. By leaving the chrominance signals unchanged, it reconstructs the contrast distribution without color distortion, achieving an optical illusion through simple computation. It can be applied to image processing engines in displays like TVs, monitors, and digital signage to provide a screen that is easy on the eyes during long viewing sessions.
N/A
