Patent ID: 8836791
Filing Date: 2014-09-16
Classification: G06T

Abstract:
1. An information processing device that tracks a predetermined target in a video made of a plurality of frames, comprising: a particle initial setting unit that sets at least one particle on the target in an image of a previously-selected frame in the video; a frame acquiring unit that sequentially acquires temporally-previous frames and temporally-next frames in the video after the previously-selected frame; a tracking range's outer edge determining unit that determines, as an outer edge of a particle tracking range, a part corresponding to the target in an image of a previous frame among the temporally-previous frames where a degree of difference in pixel values between the image of the previous frame and an image of a next frame among the temporally-next frames acquired by the frame acquiring unit is a threshold or more; a particle setting unit that sets particles in the image of the next frame at positions of pixels which are within a predetermined range with reference to positions of particles in the image of the previous frame and within an outer edge determined by the tracking range's outer edge determining unit and which have color information similar to color information on pixels at the positions of the particles; and a target specifying unit that specifies a position of the target in the image of the next frame from the positions of the particles set by the particle setting unit.