Patent ID: 8610779

Claim:
A method for monitoring operation of an LED display screen, comprising the following steps of: A0: transmitting to the LED display screen via a video controller by a computer apparatus a geometric video image that reflects a physical dimension of the LED display screen, shooting a corresponding geometric image by a video camera, transmitting the geometric image back to the computer apparatus, and according to the geometric video image and the geometric image, acquiring and storing coordinate information reflected in the geometric video image and the geometric image by the computer apparatus; A1: transmitting two monitoring video images to the LED display screen via the video controller by the computer apparatus respectively, wherein black and white colors of the two monitoring video images are complementary to each other; A2: shooting two corresponding monitoring images by the video camera, and transmitting the two monitoring images back to the computer apparatus and storing the two monitoring images; B1: computing absolute values of differences in color and luminance of each corresponding pixel between the two monitoring images by the computer apparatus to obtain a new composite image; B21: correcting distortion of the composite image according to the coordinate information by the computer apparatus to generate a resultant image consistent with the LED display screen; B22: determining correspondence relationships between the individual pixel positions in the resultant image and the individual modules in the LED display according to the module layout of boxes in the LED display screen and the LED layout of modules in each of the boxes by the computer apparatus; and B23: for each of the modules, if the number of lightspots in the resultant image is larger than a threshold setting, determining that the module works normally, and otherwise, determining that the module works abnormally.