Screen dot matrix watermark identification method and system

• Main Authors: GAO WEI, TAN SHAOQING, ZHU QINGFU
• Format: Patent
• Language: Chinese; English
• Published: 29.12.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; PHYSICS

The invention relates to the technical field of screen watermarking, and provides a screen dot matrix watermark recognition method and system, and the method comprises the steps: obtaining a dot matrix binary image and the contour of a dot matrix midpoint through dot matrix extraction based on a preprocessed screen watermark image; in the dot matrix binary image, a rectangular area is cut based on the contour of each dot, whether the features of each rectangular area meet the features of the starting dot matrix or not is judged, if yes, the coordinates, the dot width and the dot spacing of the starting dot matrix are recorded, searching is started from the coordinates of the starting dot matrix till a character dot matrix is found, and if not, the character dot matrix is obtained; and segmenting the character dot matrix based on the dot width and the dot spacing to obtain a plurality of prediction points, calculating the overlap ratio of the area of each prediction point and the actual point, calculating bina