Video quality diagnosis method and system

The invention discloses a video quality diagnosis method and system. The method comprises the steps of sampling to obtain a to-be-analyzed video frame; deblurring the to-be-analyzed video frame to obtain an evolutionary image, blurring the to-be-analyzed video frame to obtain a degraded image, and converting the to-be-analyzed video frame into an HSV space to obtain a color analysis image; subtracting the evolution image from the to-be-analyzed video frame to obtain a first difference image, subtracting the to-be-analyzed video frame from the degradation image to obtain a second difference image, fusing the first difference image and the second difference image to obtain a third difference image, and performing definition evaluation according to the difference image; performing color evaluation on the color analysis image; combining the definition evaluation result and the color evaluation result, adding a time period mark and illumination intensity to obtain a quality diagnosis feature vector, and analyzing