AN OBJECTIVE METHOD AND SYSTEM FOR ESTIMATING PERCEIVED IMAGE AND VIDEO SHARPNESS

摘要

The present invention relates to a method and system for estimating the quality of video data without gaining access to the source data. The system is configured to perform a Fast Fourier Transform (FFT) from at least some of the pixel values of the image in at least the horizontal direction, and at most in the horizontal and vertical directions for the luminance and chrominance components. An average FFT is used to calculate kurtosis and skewness, then an image-quality metric is determined by calculating an offset from the kurtosis and skewness outputs.