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Image character positioning method and device

A text and image technology, applied in the field of image text positioning method and device

Active Publication Date: 2014-06-04
NETPOSA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present application provides a method and device for locating image characters to solve the problem that there is no technical solution for locating OSD characters in video images with certain characteristics in the prior art

Method used

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  • Image character positioning method and device
  • Image character positioning method and device
  • Image character positioning method and device

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Embodiment Construction

[0082] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0083] see figure 1 , which shows a flow chart of Embodiment 1 of a method for locating image characters provided by the present application. This embodiment may include:

[0084] Step 101: Acquire a target image sequence; wherein, the target image sequence contains multiple frames of target images.

[0085] It should be said that the target image sequence is obtained from surveillance video images. Wherein, the surveillance video images may be, but not limited to, video images ac...

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Abstract

The invention discloses an image character positioning method and device. The method includes the steps of obtaining a target image sequence with multiple frames of target images, conducting horizontal weighted projection and vertical weighted projection on each frame of target image, combining weighted projection results to generate character areas, determining character spare areas in the character areas according to the character height values, the edge point density and the area main direction, adding the corresponding character spare areas in the target images together, further obtaining a target connected domain, and correcting the target corrected domain through an area reprojection method to obtain target character areas.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to a method and device for locating text in an image. Background technique [0002] OSD (On Screen Display) text is a kind of text displayed in the image, mainly using the character generation chip to display the required character information on the screen of the display. The application methods of OSD text are divided into two categories, static application and dynamic application. Among them, the static application refers to the relatively fixed form of character information that can be displayed on the video signal without receiving external data. One of the specific applications is to superimpose the shooting date, time, location and other information in the surveillance video signal. [0003] In the monitoring application of the above OSD characters, due to the complexity of the monitoring scene, the black and white brightness of the video image changes, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G06K9/54
Inventor 田波郑慧许建
Owner NETPOSA TECH
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