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On-line rapid workpiece label positioning method based on image processing

A technology of image processing and positioning methods, applied in image data processing, image analysis, instruments, etc.

Inactive Publication Date: 2014-09-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies in the manual identification of workpiece labels, and provide a method for quickly locating workpiece labels online based on image processing

Method used

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  • On-line rapid workpiece label positioning method based on image processing
  • On-line rapid workpiece label positioning method based on image processing
  • On-line rapid workpiece label positioning method based on image processing

Examples

Experimental program
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Embodiment Construction

[0061] Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

[0062] The original image in this example is as figure 1 As shown, its background color is blue, using a kind of image processing-based online rapid positioning method for workpiece labels proposed by the present invention, from such as figure 1 Locate the workpiece label area in the image shown, and the specific steps are as follows:

[0063] Step 1: Determine the background color of the workpiece label, and perform the operation of step 2 for the original image containing the workpiece label with a blue background color.

[0064] Step 2: Obtain the red, green, blue (RGB) color space values ​​of the original image, and convert the red, green, blue color space values ​​of the image to the lightness, hue, and saturation (YUV) color space using the formula (1) The U component gray value in the value, k in the formula (1) 1 =0.14713,k 2 =0.28886, the result...

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Abstract

The invention relates to an on-line rapid workpiece label positioning method based on image processing and belongs to the digital image processing technology field. According to the on-line rapid workpiece label positioning method, an RGB color space value of an original image is converted into a UU component gray value image of a YUV space and is then further converted into a binary image, after de-noising processing, a communication area is marked, the communication area is taken as a candidate area, and a license plate area is determined through calculating a length-width ratio and an area ratio of the candidate area. Through the method, areas of workpiece labels in the image have yellow and blue background colors and can be precisely positioned under multiple complex conditions, calculation is simple, and real-time operation can be realized.

Description

technical field [0001] The invention relates to an image processing-based online rapid positioning method for a workpiece label, which belongs to the technical field of digital image processing. technical background [0002] The parts on the factory production line are labeled at the end of the production line to mark the parts produced, which is convenient for the statistics of the number of workpieces produced, product quality tracking, production responsibility identification, etc. In the actual manufacturing process, before the parts (workpieces) reach the end of the production line, various labels will be attached or engraved to mark the parts from different sides for production management. [0003] Faced with a large number of parts and each part contains multiple labels, using manual methods to record label information not only consumes a lot of manpower, is inefficient, cannot match the rhythm of production, and is easy to cause operator fatigue and lead to high rec...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/40
Inventor 张发平杨吉彬阎艳
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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