Method and device for discriminating image sharpness

• Main Authors: ZHUANG ZHENGZHONG, CHEN CHUANYI, LI ZUHUI, WANG MENGYU, LIU YONG
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2017
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention relates to a method and a device for discriminating image sharpness and belongs to the image processing field. The method comprises steps that an original image of which sharpness is to be discriminated is acquired, and the original image is zoomed to a designated pixel to acquire a target image; a first characteristic of the target image is acquired, and the first characteristic is identified through a gray matrix, an image contrast matrix and a gray gradient maximum accumulation sum matrix; the first characteristic is pre-processed to acquire a second characteristic; the second characteristic is inputted to an artificial neural network model acquired through pre-training, and whether the original image is intelligible is discriminated according to an output result of the artificial neural network model. According to the method, through the gray matrix, the image contrast matrix and the gray gradient maximum accumulation sum matrix, the first characteristic of the image is extracted, image char