METHOD AND SYSTEM OF CONVERTING RGB IMAGE DATA TO YCBCR IMAGE DATA

摘要

A system (920) and method (800) of converting YCbCr image data into RGB image data includes: determining (830-850), from the YCbCr image data, a RGB-to- YCbCr color transformation matrix that was used to generate the YCbCr image data; selecting (860) coefficients for a YCbCr-to-RGB color transformation matrix based on that determination; and multiplying (870) the received YCbCr image data by the YCbCr-to- RGB color transformation matrix to produce RGB image data. The system (920) and method (800) determine (830-850) the RGB-to- YCbCr color transformation matrix that was used to generate the YCbCr image data by calculating (830) histogram data for luminance data values of the YCbCr image data, performing (840) a frequency transform on the histogram data to produce a frequency distribution of the histogram data, and determining (850) whether a localized peak occurs in the frequency distribution of the histogram data.