Patent ID: 8705936

Claim:
A video data recording device comprising: a reference information storage unit in which reference information including predetermined features is recorded; a video data acquisition unit which acquires video data, comprising first image data of a first frame and second image data of a second frame, the first image data and the second image data being sequential with respect to one another; a similarity determining unit which derives similarity degree indicating a degree of similarity between the second image data and the reference information, extracts second partial image of the second frame determined to be similar to the reference information from the second image data based on the similarity degree and generates second partial information including the second partial image and information with which it is capable of specifying where the second partial image is located in the second frame; a relation determining unit which derives relation degree indicating a degree of similarity between the first image data and the second partial information, extracts first partial image of the first frame determined to be related to the second partial information from the first image data based on the relation degree and generates first partial information including the first partial image and information with which it is capable of specifying where the first partial image is located in the first frame, the relation degree when extracting the first partial image being lower than the similarity degree when extracting the second partial image; and a medium recording unit which records the video data, and information related to the first partial information and the second partial information, in a recording medium.