Process-type computer-assisted random-needle embroidery production method

A computer-aided and production method technology, applied in the direction of calculation, design optimization/simulation, image data processing, etc., can solve the problem of not simulating the stitch generation process of random needle embroidery

Active Publication Date: 2018-06-15
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods mainly focus on the technical effect of chaotic stitch embroidery, and do not simulate the stitch generation process of chaotic stitch embroidery layer by layer subdivision.

Method used

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  • Process-type computer-assisted random-needle embroidery production method
  • Process-type computer-assisted random-needle embroidery production method
  • Process-type computer-assisted random-needle embroidery production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0162] The specific implementation process is as follows:

[0163] In step 1, define as Figure 2a with Figure 2b Area cross stitch and edge cross stitch as shown;

[0164] In step two, image segmentation and image feature extraction. Enter as image 3 The image shown is first segmented to obtain a set of four object regions R={R 1 ,R 2 ,R 3 ,R 4 },Such as Figure 4 As shown, respectively formulate the corresponding coverage ratio and calculate the aspect ratio; extract the corresponding vector field, such as Figure 5 Shown

[0165] In step three, stitches are generated for each object area, and inner and edge stitches are generated respectively. Inside the area, first calculate the number of cross stitches and the length and angle of the cross stitch, and then calculate the corresponding Voronoi diagram through multiple iterations of the area to determine the intersection point coordinates of the cross stitch, and calculate the corresponding cross stitch coordinates according to ...

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PUM

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Abstract

The invention discloses a process-type computer-assisted random-needle embroidery production method. The method comprises the steps that 1, an image partitioning method and a region vector field extraction method are adopted to extract different object regions and region vector fields of an input color image; 2, a digital stitching model comprising every single embroidery thread and every single cross stitch is established according to the characteristics of a random-needle embroidery; 3, a single-layer needle track is generated inside and at the edge of each object region, a region needle track which contains uniformly distributed embroidery threads and can show a region texture direction is generated inside each region, a fitting needle track which can show an object structure is generated at the edge of each region, and the operation is executed on all the object regions to obtain a final needle track sequence; 4, the coverage of each object region is calculated, whether the currentcoverage meets a designated requirement is judged, if not, parameters are updated, and needle tracks continue to be generated, and otherwise needle track generation in the current region is ended; and 5, coordinates of the needle track sequence are converted into coordinates of a computer embroidery machine.

Description

Technical field [0001] The invention belongs to the technical field of computer image processing and computer graphics, and particularly relates to a process-type computer-assisted manufacturing method of random stitch embroidery. Background technique [0002] Chaos stitch embroidery is a new modern embroidery art in my country. Its unique style with lively stitches, smooth lines and strong sense of hierarchy is well-known at home and abroad. Embroidering with random needles can move needles freely and has a large display space. It has changed the traditional embroidery method of "tightening the needles and arranging the threads", and adopts the stitching method of vertical and horizontal cross, different lengths, sparse and dense overlaps, and flexibility. The three-dimensional picture of the "painting theory" and "embroidery theory" are organically combined, and visual manuscripts such as photography, oil painting and sketching are reproduced into embroidery art works with uniq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T7/11
CPCG06F30/20G06T7/11
Inventor 孙正兴杨葳杨克微王爽
Owner NANJING UNIV
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