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Method and system for extracting lines from image

An image and line technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as incompleteness and inaccurate line extraction, and achieve the effect of wide application prospects.

Inactive Publication Date: 2012-07-11
方正国际软件(北京)有限公司 +1
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Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and system for extracting lines from images to solve the problem of inaccurate and incomplete line extraction in the prior art

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  • Method and system for extracting lines from image
  • Method and system for extracting lines from image
  • Method and system for extracting lines from image

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Embodiment Construction

[0042] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0043] figure 1 It is a flow chart of the main steps of the method for extracting lines from an image according to an embodiment of the present invention, such as figure 1 As shown, the method mainly includes the following steps:

[0044] Step S11: calculating the color response image of the original image;

[0045] Step S13: detecting the line centerline of the color response image;

[0046] Step S15: According to the information of the center line of the line, each pixel point of the original image is divided into a line area pixel point, a non-line area pixel point and an unknown area pixel point;

[0047] Step S17: Extract the line area of ​​the image according to the pixel value of eac...

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Abstract

The invention provides a method and a system for extracting lines from an image, which are used for solving the problem that the lines cannot be accurately and completely extracted in the prior art. The method comprises the following steps of: computing a color response image of an original image; detecting line centerlines of the color response image; according to the information of the line centerlines, dividing all pixel points of the original image into line area pixel points, non-line area pixel points and unknown area pixel points; and according to the pixel values of all the pixel points of the original image and the classified information of the pixel points, extracting line areas of the image. The technical scheme provided by the invention contributes to obtaining accurate and complete lines from the image.

Description

technical field [0001] The invention relates to a method and system for extracting lines from images. Background technique [0002] Extracting lines from images is a common image processing technique. The lines or lines in the image are very important basic features for image processing and image understanding based on image content. By extracting the lines in the image, the image can be further processed and understood. The line extraction method is very important. application value. [0003] The existing line extraction methods roughly include the following two categories: (1) regard the line as a ridge or valley in the image, estimate the second-order partial derivative matrix of the image at each point, and decompose the second-order partial derivative matrix , the largest or smallest eigenvalue corresponds to the intensity of the ridge or valley, respectively, and the direction of the corresponding eigenvector represents the normal to the line. Non-maximum suppressio...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 唐志峰袁梦尤
Owner 方正国际软件(北京)有限公司
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