device and method for enhancing image data exchange based on perceptual luminance non-linearity across different display capacities

摘要

patent and device: "Device and method for enhancing image data exchange based on non-linearity of perceptual luminance across different display capacities". portable imaging device with data receiver configured to receive reference coded image data. The data includes reference code values encoded by an external coding system. reference code values represent reference gray levels that are selected using a reference gray scale display function based on the perceptual nonlinearity of human vision adapted to different light levels at spatial frequencies. The imaging device has a data converter configured to access a code mapping between reference code values and device-specific code values of the imaging device. device-specific code values are set to produce imaging device-specific gray levels. Based on code mapping, the data converter is configured to transcode the reference encoded image data into device specific image data, which is encoded with the device specific code values.