1. A device for extracting features from a video comprising: a frame rate converter performing a frame rate conversion on the video to a preset frame rate; a gray scale converter performing a grey scale conversion on the frame rate-converted video; a frame size normalizer performing a frame size normalization on the gray scale-converted video to a preset image size; and a feature extractor partitioning the normalized video into image blocks of a predetermined size, and extracting features from the image blocks on the basis of luminance values of the image blocks, wherein the feature extractor extracts the features by using centroid coordinate of the luminance values in the image blocks and centric coordinate of the image blocks, wherein the feature extractor extracts the features by calculating the determinant of a matrix including the centroid coordinate and the centric coordinate.