Visual indexing system

Details Visual indexing system Visual indexing system

1999-11-08

2001-02-06

Chevalier, Robert (Department: 2715)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000

Reexamination Certificate

active

06185363

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention is related to a visual indexing system which analyzes contents of source video and develops a visual table of contents using selected images.
Users will often record home videos or record television programs, movies, concerts, sports events, etc. on a tape for later or repeated viewing. Often, a video will have varied content or be of great length. However, a user may not write down what is on a recorded tape and may not remember what she recorded on a tape or where on a tape particular scenes, movies, events are recorded. Thus, a user may have to sit and view an entire tape to remember what is on the tape.
Video content analysis uses automatic and semi-automatic methods to extract information that describes contents of the recorded material. Video content indexing and analysis extracts structure and meaning from visual cues in the video. Generally, a video clip is taken from a TV program or a home video.
In a system described by Hongjiang Zhang, Chien Yong Low and Stephen W. Smoliar in “Video Parsing and Browsing Using Compressed Data”, published in Multimedia Tools and Applications in 1995, (pp. 89-111) corresponding blocks between two video frames are compared and the difference between all blocks totaled over the complete video frame without separating out block types.
The system of Zhang, however, may produce skewed results if several blocks have a difference in color or intensity. The present system attempts to prevent such skewed results.
SUMMARY OF THE PRESENT INVENTION
A system is desired which will provide video archival and retrieval.
A system is further desired which will create a visual index for a video source which was previously recorded or while being recorded, which is useable and more accurate in selecting significant keyframes, whle providing a useable amount of information for a user.
The present invention further presents up to a real time video analysis system supporting visual content extraction for source video which may include informative and/or entertainment programs such as news, serials, weather, sports or any type of home recorded video.
The present invention further analyzes the contents of the source video content using limited computing resources in up to real-time and develops a visual table of contents using selected images.
The present invention further allows a user to access particular points on a tape, file, disk, DVD, or other storage means, using this visual table of contents or visual index.
The present invention further presents new methods for video cut detection, static scene detection, and keyframe filtering to provide for more useable visual images in the visual index.
The present invention additionally allows for filtering of keyframes belonging to commercials out of the visual index.
For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which there are illustrated and described the preferred embodiments of the invention.


REFERENCES:
patent: 5568275 (1996-10-01), Norton et al.

Affiliated with

Also associated with

Rating

Visual indexing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Visual indexing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Visual indexing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2611681