Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for summarizing a video using motion descriptors

A video and motion technology, applied in the field of video, can solve problems such as not working

Inactive Publication Date: 2008-06-04
MITSUBISHI ELECTRIC CORP
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The easiest way to find a single keyframe is to choose an arbitrary frame from the sequence, but in cases where the content of the video has more information than can be conveyed with a single frame, methods based on single keyframes are not sufficient. worked

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for summarizing a video using motion descriptors
  • Method for summarizing a video using motion descriptors
  • Method for summarizing a video using motion descriptors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The present invention uses motion features, and optionally color features, to generalize compressed video. Thus, the inductive method of the present invention initially determines these features from compressed video.

[0046] feature extraction

[0047] color features

[0048] The DC coefficients of an I frame can be correctly extracted using known techniques. In the case of P frames and B frames, DC coefficients can be approximated using motion vectors that are not decompressed at all. For example, wishing to refer to Yeo et al. 「 About extracting DC sequence from MPEG video 」 (IEEE ICIP Vol. 2, 1995). In order to extract color features, the YUV values ​​of the DC image can be transformed into another color space.

[0049] Among the most commonly used techniques, color histograms are employed. Color histograms have been widely used in image and video indexing and retrieval. Hope to refer to Smith and wait 「 Automatic Image Retrieval Using Color and Structure ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method measures an intensity of motion activity in a compressed video. The intensity of the motion activity is used to partition the video into segments of equal cumulative motion activity. Key-frames are then selected from each segments. The selected key-frames are concatenated in temporal order to form a summary of the video.

Description

technical field [0001] The present invention relates generally to video, and more particularly to generalization of compressed video. Background technique [0002] It would be desirable to automatically generate summaries of video, and in particular to generate summaries of compressed digital video. [0003] compressed video format [0004] MPEG (Moving Picture Experts Group) has adopted specifications as a standard for compressing video as a digital signal. The MPEG standard achieves a high data compression rate by creating information about the entire frame of an image only by chance. The complete image frame, that is, the intra-frame coded frame is often called 「 I frame 」 or 「 fixed frame 」 , which contains the entire frame information independently of all other frames. The image difference frame, that is, the inter-frame coding frame is often called 「 B frame 」 and 「 P frame 」 ,or 「 predicted frame 」 , which is encoded between I frames, it only reflects the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26G06F17/30G11B27/28H04N5/91
CPCG06F17/30811G06F17/30814H04N7/361H04N19/00315G06K9/00711G06F17/30843H04N7/26148H04N19/00587G11B27/28G06F17/30802H04N19/51H04N19/186G06F16/7864G06F16/739G06F16/786G06F16/785G06V20/40
Inventor A·迪瓦卡兰R·拉德哈里什南K·A·佩克
Owner MITSUBISHI ELECTRIC CORP