TV station logo training method and identification method

A technology of training method and recognition method, applied in the field of pattern recognition of images, can solve the problems of inapplicability of the frame difference method, inability to match the size or shape of the station logo, and inability to obtain continuous multi-frame video information, etc.

Inactive Publication Date: 2010-06-16
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Problems solved by technology

But in actual application, the method of this step has many disadvantages: First, in some real-time network monitoring systems, continuous multi-frame video information cannot be obtained, and often only single-frame video image information can be obtained. At this time, the fr

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  • TV station logo training method and identification method
  • TV station logo training method and identification method
  • TV station logo training method and identification method

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Embodiment Construction

[0060]In order to make the purpose, technical solution and advantages of the present invention clearer, the method for identifying a TV station logo according to an embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0061] According to a specific embodiment of the present invention, the following content describes in detail the method for recognizing a TV station logo on a single frame video image, and the method mainly includes two steps of station logo template training and station logo detection. Wherein, for the convenience of description, a coordinate system is adopted in which the positive direction of the x direction is from left to right in the horizontal direction, and the positive direction of the y direction is from top to bottom in the verti...

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Abstract

The invention provides a TV station logo training method and an identification method. The TV station logo training method comprises the following steps of: (1) determining the external rectangle of a station logo in a training video according to a frame difference method; (2) carrying out edge detection on the external rectangle of the station logo to obtain edge points of the station logo; and (3) calculating distance transformation matrix Df of the station logo according to the edge points of the station log. According to characteristics obtained by the TV station logo training method, the position of the station logo in the video is determined only by the single-frame video information of the video to be detected not by continuous multiframe video information in the identification process; moreover, under the conditions that the shape and the size of the station logo have subtle changes, the station logo still can be successfully identified.

Description

technical field [0001] The invention relates to the field of image pattern recognition, in particular to a TV station logo training method and recognition method. Background technique [0002] The station logo is the symbol of TV stations and TV columns, and it is one of the important semantic information in content-based multimedia search. At the same time, station logo detection is also one of the research hotspots in academia and industry in recent years. It is mainly used for some network real-time monitoring system. [0003] In the prior art, the television station logo recognition method performs station logo recognition according to the station logo mask in the station logo library, which specifically includes the following two steps: [0004] 1. Station logo detection: Obtain the station logo position and station logo mask of the video to be detected through the method of multi-frame frame difference. For example, extract the station logo edge as a mask, such as im...

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Application Information

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IPC IPC(8): G06K9/46G06K9/62
Inventor 汪文英张冬明张勇东包秀国云晓春李锦涛
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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