System and an objective way to evaluate the sharpness of images and videos that have been perceived

摘要

The present invention relates to a method and system without having to access the source data, evaluating the quality of video data. For chrominance components and luminance in the horizontal and vertical directions, the system is configured to perform a Fast Fourier Transform (FFT) from at least a portion of the pixel values ​​of the image most Also, in the horizontal direction at least. Image quality metric is determined by calculating the skewness and kurtosis with the average FFT, calculate the offset from the output of the skewness and kurtosis thereafter.