Patent Document ID: 8644554
Application ID: 13164027
Patent Status: 1

Claim One:
1. A method of detecting an object superimposed on a display area of a screen, the method comprising: generating an image to be displayed; displaying the generated image on the screen; obtaining a captured image of the screen including the display area, the captured image of the screen being captured when the generated image is displayed on the screen; and comparing, by a processor, the generated image with the captured image so as to detect the object superimposed on the display area of the screen, wherein, the comparing further comprises: correcting color of the generated image by using at least one of the following parameters: a black offset representing a captured non-all-black image when the generated image is all black; a screen unevenness degree representing an unevenness degree of the captured image when the generated image is even; and a channel brightness response representing a correspondence relationship between a brightness of the generated image and a brightness of the captured image.