| US 7,587,124 B2 | ||
| Apparatus, method, and computer product for recognizing video contents, and for video recording | ||
| Naoaki Horiuchi, Tsurugashima (Japan); and Shinichi Gayama, Tsurugashima (Japan) | ||
| Assigned to Pioneer Corporation, Tokyo (Japan) | ||
| Filed on Jan. 13, 2005, as Appl. No. 11/33,972. | ||
| Claims priority of application No. 2004-012404 (JP), filed on Jan. 20, 2004. | ||
| Prior Publication US 2005/0183016 A1, Aug. 18, 2005 | ||
| Int. Cl. H04N 5/91 (2006.01); H04N 5/00 (2006.01); H04N 5/14 (2006.01); H04N 9/64 (2006.01) | ||
| U.S. Cl. 386—69 [386/68; 386/95; 386/125; 386/126; 348/700; 348/701] | 9 Claims |
| 1. An apparatus for recognizing contents of a video made of picture frames, the apparatus comprising:
a splitting unit that splits the picture frames into a plurality of sets of video shots based on cut points, each cut point
indicating a change of screen;
a similar-video-shot extracting unit that extracts similar video shots that are similar to each of the video shots from among
the sets of video shots;
a maximum-count-video-shot extracting unit that counts a number of similar video shots for each of the video shots and extracts
a maximum count video shot that has a maximum count of the similar video shots;
a representative-video-shot determining unit that takes the maximum count video shot as a representative video shot representing
contents of the video;
an assessing unit that assesses whether the maximum count video shot extracted by the maximum-count-video-shot extracting
unit corresponds to the representative video shot determined by the representative-video-shot determining unit based on a
count of the similar video shots that are similar to the maximum count video shot and a count of a first set of video shots,
wherein
the assessing unit includes:
an appearance-ratio calculating unit that calculates an appearance ratio between a shot count of similar video shots that
are similar to the maximum count video shot and the shot count of the first set of video shots; and
an appearance-ratio comparing unit that compares the appearance ratio calculated by the appearance-ratio calculating unit
with a predetermined appearance ratio, and
the assessing unit assesses whether the maximum count video shot corresponds to the representative video shot based on a comparison
result of the appearance-ratio comparing unit; and
a second representative-video-shot determining unit that takes the representative video shot as the maximum count video shot
based on an assessment result of the assessing unit.
|