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Automatic extraction and data indexing method

An automatic extraction and indexing technology, which is applied in video data indexing, video data retrieval, digital data information retrieval, etc., can solve the problems of incomplete time segmentation and long image shooting lens

Inactive Publication Date: 2005-03-16
PENDRAGON WIRELESS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in most cases, time segmentation does not seem to be completely appropriate, for example in sports (football, tennis games) applications, image capture shots can be very long

Method used

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  • Automatic extraction and data indexing method
  • Automatic extraction and data indexing method
  • Automatic extraction and data indexing method

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Experimental program
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Embodiment Construction

[0030] The purpose of a table of contents for a video sequence is to define the structure of the sequence in a hierarchical manner, possibly in the form of a text document. The original sequence is thus subdivided into subsequences, which can also be further divided into shorter subsequences. At the end of the segmentation process, the shortest entity to describe will be the micro-segment.

[0031] More precisely, according to the proposed strategy, the method is divided into three steps, as figure 1 As shown, they are: a shot detection step 11 (in an image sequence, an image shot is a specific sequence showing a single background, without editing effects, such as defining a quick cut cut, corresponding to a sliding window Effects of frame removal, fitting of dark spots into the frame, fades representing the transition from one camera record to another camera record by a linear combination of frames, etc.), the step 12 of partitioning the detected take, and A shot cluster st...

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PUM

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Abstract

The invention relates to a method intended to automatically create a description of a video sequence - i.e. its table of contents - by means of an analysis of said sequence. The main step of said method is a temporal segmentation of the video shots of the sequence, using camera motion parameters. This segmentation uses a similarity criterion involving, for sub-entities of each shot, the level of homogeneity of these sub-entities on the motion parameters of the camera used to acquire the original images and generate the bitstream constituting the processed sequence.

Description

technical field [0001] The invention relates to a method for automatically extracting the structure of a video sequence corresponding to consecutive frames. The invention also relates to a method for indexing data that has been processed according to said method, to an apparatus for performing said indexing method, and to an image retrieval system in which said method is implemented. The invention is very useful in applications associated with the MPEG-7 standard. Background technique [0002] The MTEG-7 standard seeks to provide a flexible and extensible structure for defining a standard set of descriptions that can be used to describe various types of multimedia files. Descriptions associated with a given content allow for a fast and efficient search for material of interest to the user. The invention relates more particularly to the representation of video sequences. [0003] An image sequence is a sequence of images arranged sequentially (chronologically). Before bei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/8352G06F17/30G06K9/00G11B27/28H04N5/14H04N5/91
CPCG06F17/30811G06K9/00711H04N5/147G06F17/30858G11B27/28G06F16/786G06F16/71G06V20/40H04N21/8352G06F18/20
Inventor J·拉克-平萨克P·萨莱姆比尔
Owner PENDRAGON WIRELESS LLC