IMAGE FRAME MOTION ESTIMATION DEVICE, ENCODING METHOD THEREOF

摘要

The present invention relates to an image frame motion estimation device and an image frame motion estimation method using the same. An image frame motion estimation method according to an embodiment of the present invention includes the steps of: performing first sampling for generating a first sample source block by performing first-type sampling on pixels of a source block; performing second sampling for generating a first sample reference block by performing first-type sampling on pixels of a reference block; determining a first matching region by comparing pixel values of the first sample source block and the first sample reference block; and determining a second matching region corresponding to the source block by comparing pixel values of a plurality of regions adjacent to the first matching region and the source block. Where one pixel is sampled for each block constituted by N pixels (N is a natural number) in width and M pixels (M is a natural number) in height and a pixel sampled in a horizontal direction is projected, when at least two pixels are sampled for every M pixels or where one pixel is sampled for each block constituted by N pixels (N is a natural number) in width and M pixels (M is a natural number) in height and a pixel sampled in a vertical direction is projected, the first-type sampling causes at least two pixels to be sampled for every N pixels.