Method for facilitating the search of video content
View Patent ↗A method for facilitating the search of video content by matching fingerprint data extracted from a given video content with existing video fingerprint data already stored in the database. The system consists of systems for extracting fingerprint from the video content, the database for storing plurality of fingerprint data entries from known video content segments and systems for comparing between the fingerprint data obtained from the video content with the fingerprint data entries obtained from the fingerprint database. Once a match is identified, the video content associated with the matched fingerprint in the database is said to be identified by the information in the database associated with the match. The information referenced from the database includes archived video information.
1. A method for facilitating the search of video content, comprising the steps of:
submitting a searching video clip of digitized video image frame data for a time duration;
extracting a fingerprint from the searching video clip;
selecting at least one database entry matching a specific time of searching video clip from a fingerprint archive database storing fingerprint data extracted from distributed video content;
delivering the at least one database entry matching the specific time of searching video clip to a search module;
reconstructing a data segment in the at least one database entry into continuous fingerprint streams by the search module, wherein entries in the at least one database entry from the same location and channel are grouped together, and fingerprint data sections are stripped from the entries and concatenated according to segment ID and time-stamps contained within each of the entries;
searching for a match with the fingerprint from the continuous fingerprint streams to generate a matching result;
wherein a stream in said fingerprint streams is advanced relative to said fingerprint corresponding to one video frame at a time and the fingerprint matching operation is repeated, if the match is not found;
wherein if a match is found, additional information associated with the entries is combined with information on the searching video clip to generate a single report message; and
combining the matching result with additional information obtained from the fingerprint archive database comprising time, location, and channel of distribution information to form a search report.
2. The method according to claim 1 , wherein the additional information obtained from the fingerprint archive database comprises content types.
3. The method according to claim 1 , wherein the digitized video image frames are delivered to a fingerprint extractor to obtain the fingerprint.
4. The method according to claim 3 , wherein the searching video clip is encoded in digital compressed video data format and is made to first go through a converter to undergo decompression and the decompressed digital video frames are delivered to the fingerprint extractor.
5. The method according to claim 3 , wherein the digitized video frame data is stored into a frame buffer, and a sub-sampler obtains selected samples from each video frame data to form the fingerprint.
6. The method according to claim 1 , wherein said fingerprint entries are searched from said fingerprint archive database according to location, time, channel, and/or programming content.
7. The method according to claim 1 , wherein the single report message contains channel, video recording time of the start and end frames of the matched fingerprint and geographic location of the video recording.