Patent Document ID: 9552514
Application ID: 14461558
Patent Status: 1

Claim One:
1. A moving object detection method comprising: acquiring at least two depth image frames including depth information, which are obtained by continuously taking images of a moving object, the at least two depth image frames including a present depth image frame and at least one past depth image frame; dividing each of the at least two depth image frames into a plurality of blocks; calculating differences between numbers of pixels positioned in respective different depth areas in each of the plurality of blocks in the present depth image frame, and numbers of pixels positioned in respective different depth areas in each of the corresponding plurality of blocks in each of the at least one past depth image frame, which correspond to the plurality of blocks in the present depth image frame; and detecting a moving block in the present depth image frame based on the calculated differences, and constituting a detected moving object, with the moving block, wherein the detecting of the moving block includes determining which part of the present depth image frame belongs to a human hand, based on a position and a movement level of each of the moving blocks in the present depth image frame detected presently, and a position and a movement level of each of the moving blocks in at least one previous depth image frame detected previously, and wherein the determining of the part of the present depth image frame that belongs to the human hand, includes mapping a first moving area in the present depth image frame, based on a position of the first moving area constituted by the moving blocks in the previous depth image frame detected previously, such that the first moving area entirely or partially overlaps a second moving area constituted by the moving blocks in the present depth image frame, superposing a movement level of each pixel point in the first moving area which has been mapped, on a movement level of each pixel point in the second moving area, and acquiring an accumulated movement level diagram based on a previous movement, and determining an area as the human hand when the area satisfies a predetermined condition, based on the accumulated movement level diagram based on the previous movement.