Patent ID: 7124053

Claim:
An information processing method for obtaining camera parameters of an image pickup device fixed in a predetermined position in real space by using markers fixed in a predetermined position in real space, the method comprising the steps of: selecting one image obtain mode from among a plurality of image obtain modes including a first image obtain mode for obtaining a moving image, and a second image obtain mode for obtaining at least one still image; obtaining the image according to the selected image obtain mode, wherein the obtained image is picked up by the image pickup device; selecting one marker extraction mode from among a plurality of marker extraction modes including a first marker extraction mode for automatically extracting the markers in the obtained image, and a second marker extraction mode for manually extracting markers in the obtained image; extracting the markers included in the obtained image based on the selected marker extraction mode; superimposing information indicating the extracted marker on the obtained image; displaying the superimposed image; and determining camera parameters of the image pickup device by using image coordinates of the markers, wherein, if the first image obtain mode is selected, the image is a moving image and the information indicating the extracted markers is superimposed in the moving image, and, if the second image obtain mode is selected, the image is a still image and the information indicating the extracted markers is superimposed in the still image, and wherein if the first obtain mode and the second marker extraction mode are selected, the information indicating the marker manually extracted on the past frame image is displayed on the current frame image.