Interaction platform based method for rapidly detecting text in complex background

A complex background and interactive platform technology, applied in the field of rapid text detection in complex backgrounds, can solve problems such as slow text positioning

Active Publication Date: 2016-03-16
UNIV OF ELECTRONIC SCI & TECH OF CHINA
View PDF7 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a fast detection method for text in complex backgrounds based on an interactiv

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
  • Interaction platform based method for rapidly detecting text in complex background
  • Interaction platform based method for rapidly detecting text in complex background
  • Interaction platform based method for rapidly detecting text in complex background

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074] Describe technical scheme of the present invention in further detail below in conjunction with accompanying drawing: as figure 1 As shown, a fast detection method for text in complex background based on an interactive platform, which includes the following steps:

[0075] S1: Input image preprocessing: perform preprocessing operations on the input image to enhance the contrast of text edges;

[0076] This step first converts the color image collected by the camera into a grayscale image, because the response of the image to the light in the grayscale space is not very obvious. Then use two image processing methods to preprocess the image:

[0077] Described step S1 comprises the following sub-steps:

[0078] S11: Perform histogram averaging on the input image, so that the gray histogram of the original image changes from a relatively concentrated gray-scale interval to a uniform distribution in the entire gray-scale range, the formula is as follows:

[0079] ...

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

The present invention discloses an interaction platform based method for rapidly detecting a text in a complex background. The method comprises the following steps: S1: inputting an image for preprocessing; S2: rapidly positioning of a text candidate area: performing contour detection on the image processed in the step S1, and performing frame selection on each closed area by using a rectangular frame, then rapidly positioning all angle points in each rectangular frame by using an SIFT algorithm, and performing preliminary screening by using the number of the angle points as a preliminary screening condition; S3: firstly adjusting the image to a uniform size by using a normalization algorithm, then projecting contents in an original image to an exact center of the normalized image by a forward mapping method, and correcting an angle appropriately; and S4: text/background screening: extracting a feature firstly, and using a candidate area that is screened by a trained classifier as a detected text area. According to the method provided by the present invention, text detection in a complex background is realized, and a major problem that is solved is how to rapidly position a horizontal text and a text with a rotation angle in the image in the case of maintaining relatively high accuracy.

Description

technical field [0001] The invention relates to the fields of computer vision and human-computer interaction, in particular to a rapid detection method for text in complex backgrounds based on an interactive platform. Background technique [0002] The problem of text detection in complex backgrounds is regarded as a classic problem in both the field of computer vision and the field of human-computer interaction. There are two reasons. First, this technology has a wide range of applications. For example, this technology can be used to allow smart devices such as mobile phones to read books for us, or it can be applied to unmanned vehicles to allow vehicles to automatically recognize road signs. Secondly, the text detection problem is sometimes very difficult to solve, because text detection is different from general target detection such as faces, vehicles, and pedestrians. The shape of the text is more changeable (various degrees of deformation and blurring often appear), ...

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
IPC IPC(8): G06K9/00G06K9/62
CPCG06V30/414G06F18/24
Inventor 程洪王光甫杨路
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap