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Wide fabric image acquiring and splicing method based on reference characteristics

A wide fabric and image acquisition technology, applied in the field of image processing, can solve the problems of strong cycle periodicity and stitching distortion.

Active Publication Date: 2015-05-20
杭州光羽新材料科技有限公司
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Problems solved by technology

[0004] In view of the need for high-precision fabric image mosaic in technical fields such as fabric characteristic testing, the purpose of the present invention is to obtain and stitch wide-width fabric images based on reference features, and use reference fabrics to extract Harris corner points and calculate homography matrices to complete the original image to be stitched The high-precision seamless stitching is a non-contact automatic stitching method for fabric images, which solves the stitching distortion problem of the existing stitching methods for fabric images with strong periodicity or no obvious features

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
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  • Wide fabric image acquiring and splicing method based on reference characteristics
  • Wide fabric image acquiring and splicing method based on reference characteristics
  • Wide fabric image acquiring and splicing method based on reference characteristics

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Embodiment Construction

[0064] The present invention will be further described below in conjunction with drawings and embodiments.

[0065] The implementing device of the method of the present invention is as figure 2 As shown, the wide-width fabric is placed on the fabric stage, and the CCD camera is located directly above the wide-width fabric and facing the wide-width fabric. The CCD camera is connected to the computer through the image acquisition card, and the fabric stage is connected to a stepping motor for controlling left and right movement. , the stepper motor is connected to the PC through the stepper motor control unit.

[0066] The coordinate system of the image processing in the present invention takes the upper left corner of the image as the origin, the horizontal direction is the x direction, the vertical direction is the y direction, and the diagonally opposite corners are the xy direction.

[0067] Such as figure 1 Shown, the embodiment of the inventive method is as follows:

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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
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Abstract

The invention discloses a wide fabric image acquiring and splicing method based on reference characteristics. The method comprises the steps: horizontally arranging the fabric on a fabric carrier table, horizontally arranging a reference fabric in the middle of the fabric carrier table, then moving the reference fabric, and respectively acquiring a left reference image, a right reference image, an original left image and an original right image in the process; obtaining a respective Harris angular point set by adopting a multi-scale Harris angular point detection method for the left reference image and the right reference image; carrying out the initial matching by adopting a normalization relevant measurement method to obtain an initial matching point set; carrying out the initial matching characteristic point refinement and homography solution by adopting an RANSAC method to obtain a final homography; carrying out the projection conversion registration on the original left image and the original right image, then splicing and fusing, and acquiring and splicing the fabric image. By adopting the method, the seamless splicing of the fabric image with high circulating period or no obvious characteristic is realized, the splicing precision is high, the relative geometric position relation of the original fabric image can be precisely calculated, and the interference resistance is high.

Description

technical field [0001] The invention relates to an image processing method, in particular to a method for acquiring and splicing images of wide-width fabrics based on reference features, with strong periodicity or no obvious features. Background technique [0002] In the process of studying the characteristics of textile fabrics, such as fabric drape, fabric wrinkle, fabric defects, etc., limited by hardware conditions, one shot can only achieve partial image acquisition, especially for wide-width fabrics. Therefore, it is usually necessary to use a binocular camera to collect two partial images with a certain overlapping area, and then perform seamless splicing to form a complete fabric image, and then realize the study of fabric characteristics. Therefore, image splicing technology is the primary focus of fabric feature research premise. [0003] At present, image stitching methods mainly include template matching, grid-based matching and feature-based matching. Template...

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
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Application Information

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IPC IPC(8): G06T5/50G06T3/40G06T7/00
Inventor 田秋红陈本永孙政荣姚佳宝
Owner 杭州光羽新材料科技有限公司
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