Patent ID: 8934548
Filing Date: 2015-01-13
Classification: H04N

Abstract:
1. An image encoding device which divides each frame of an moving image signal into blocks each having a predetermined size and performs a motion prediction for each of the blocks to create a predictive-encoded bit stream, said image encoding device comprising: a predicting unit for adaptively determining a size of a motion prediction unit block in each of said blocks according to a predetermined condition, and for dividing said motion prediction unit block into motion vector allocation regions to search for a motion vector; and an encoding unit for, when a motion vector is allocated to a whole of said motion prediction unit block, performing encoding in a first skip mode if said motion vector is equal to an estimated vector which is determined from motion vectors in surrounding motion prediction unit blocks and data to be encoded as a motion prediction error signal does not exist, and for, when each of said motion vector allocation regions has a size equal to or larger than a predetermined size and a motion vector is allocated to a whole of each of said motion vector allocation regions, performing encoding in a second skip mode if said motion vector is equal to an estimated vector which is determined from motion vectors in surrounding motion vector allocation regions and data to be encoded as a motion prediction error signal does not exist.