METHOD AND DEVICE FOR SEARCHING FOR IMAGE

摘要

Disclosed is a new method of searching for an image at a high speed based on only coding unit depth information of high efficiency video coding (HEVC), which is a next-generation image coding codec. Unlike an existing method of dividing a frame into 16 sub-images and sub-dividing the sub-images into fixed image-blocks to perform calculation, the method of searching for an image according to the present invention uses a block having a 64×64 size, which is the largest coding unit (LCU) used in the HEVC coding codec itself, as it is. Furthermore, the method of searching for an image according to the present invention performs an image search based on information on a depth to which the LCU is divided, unlike an existing method of classifying image-block units into five kinds of edges to calculate a histogram and using the histogram as a basis for an image search.

主权项

1. A method of searching for an image using coding unit depth information generated by a high efficiency video coding (HEVC) encoder, the method comprising:
(a) generating a first histogram on coding unit depth information of a key frame which is a search objective; (b) generating a second histogram on coding unit depth information of a first frame from a video which is a search target; (c) generating difference information between the first histogram and the second histogram; and (d) detecting the first frame as a frame corresponding to the key frame based on the difference information.