Patent ID: 6876701

Claim:
A video moving object detecting method comprising the steps of: a. determining whether a video signal in a predetermined unit area represents a background area or a non-background area from a reconstructed video signal acquired by decoding encoded data obtained by compression-encoding a motion video signal, including determining whether an interest macro block used as a unit area is a background macro block corresponding to the background area or a non-background macro block corresponding to the non-background area every frame; and b. detecting adjacent unit areas representing the non-background area using a determination result of the step a to determine the adjacent unit areas as an area of a moving object, including detecting adjacent interest macro blocks representing the non-background macro block as the area of the moving object; wherein the step a includes determining a background or a non-background every macro block in the frame on the basis of decoded mode information, a first cross correlation value between a local decoded picture signal and a reference picture signal of a frame preceding by one frame, and a second cross correlation value between the local decoded picture signal and a background picture signal preceding by one frame.