Descriptor for video sequence and image retrieval system using said descriptor

A technology of descriptors and video indexing, which can be used in parts, character and pattern recognition of TV systems, digital data information retrieval, etc., and can solve problems such as difficulties

Inactive Publication Date: 2001-05-02
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still very difficult to identify information relevant to a given query, or to efficiently browse through a large number of video files

Method used

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  • Descriptor for video sequence and image retrieval system using said descriptor
  • Descriptor for video sequence and image retrieval system using said descriptor
  • Descriptor for video sequence and image retrieval system using said descriptor

Examples

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Embodiment Construction

[0014] From a video indexing perspective, the operation of the camera is very important. Because object motion and overall motion are key features that differentiate still images from video, any indexing system based on video content should include a method for representing motion efficiently and broadly. In cases involving camera motion to varying degrees, it is clear that the portion of the video where the camera is stationary is different in spatio-temporal content from the portion of the video where the camera is traveling or panning side to side. As with all other identifying features, if this is possible by taking into account any type of video and any type of application where camera motion may be a problem, this overall motion will have to be accounted for in future MPEG-7 frameworks. description and presentation. Adding a description of the overall motion in the video file will allow users, whether they are non-experts or professionals, to query the motion state of t...

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PUM

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Abstract

The present invention relates to a descriptor for the representation, from a video indexing viewpoint, of motions of a camera or any kind of observer or observing device within any sequence of frames in a video scene. The motions are at least one or several of the following basic operations: fixed, panning (horizontal rotation), tracking (horizontal transverse movement) tilting (vertical rotation), booming (vertical transverse movement), zooming (changes of the focal length), dollying (translation along the optical axis) and rolling (rotation around the optical axis), or any combination of at least two of these operations. Each of said motion types, except fixed, is oriented and subdivided into two components that stand for two different directions, and represented by means of an histogram in which the values correspond to a predefined size of displacement. The invention also relates to an image retrieval system in which a video indexing device uses said descriptor.

Description

field of invention [0001] The present invention relates to a descriptor for representing, from a video indexing point of view, the motion of a camera or any kind of observer or observation device in any sequence of frames in a video scene, said motion being at least one of the following basic operations Or a few: fixed, left and right (horizontal rotation), tracking (horizontal lateral movement, also known as traveling (travelling) in film language), pitch (vertical rotation), lifting (booming) (vertical lateral movement), push and pull Lens (changing the focal length), panning back and forth (translation along the optical axis), and roll (rotation around the optical axis), or any combination of at least two of these operations. The present invention can be widely used in applications targeted by the future MPEG-7 standard. Background of the invention [0002] Archiving of image and video information is a very important task in several fields of application, for example in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06K9/00G06T7/20H04N5/76H04N5/92
CPCG06K9/00711G06F17/30811G06F16/786G06V20/40
Inventor B·莫赖
Owner KONINK PHILIPS ELECTRONICS NV
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