乐胖代购免代理版

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Nowadays, it can also be performed via automated machines that weave threads with high spatial accuracy. A characteristic feature of the appearance of the threads is a high degree of anisotropy. The anisotropic behavior is caused by depositing thin but long strings of thread. As a result, the stitched patterns convey both color and direction. Artists leverage this anisotropic behavior to enhance pure color images with textures, illusions of motion, or depth cues. However, designing colorful embroidery patterns with prescribed directionality is a challenging task, one usually requiring an expert designer. In this work, we propose an interactive algorithm that generates machine\u2010fabricable embroidery patterns from multi\u2010chromatic images equipped with user\u2010specified directionality fields. We cast the problem of finding a stitching pattern into vector theory. To find a suitable stitching pattern, we extract sources and sinks from the divergence field of the vector field extracted from the input and use them to trace streamlines. We further optimize the streamlines to guarantee a smooth and connected stitching pattern. The generated patterns approximate the color distribution constrained by the directionality field. To allow for further artistic control, the trade\u2010off between color match and directionality match can be interactively explored via an intuitive slider. We showcase our approach by fabricating several embroidery paths.<\/jats:p>","DOI":"10.1111\/cgf.14770","type":"journal-article","created":{"date-parts":[[2023,5,23]],"date-time":"2023-05-23T09:49:51Z","timestamp":1684835391000},"page":"397-409","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Directionality\u2010Aware Design of Embroidery Patterns"],"prefix":"10.1111","volume":"42","author":[{"ORCID":"http:\/\/orcid.org\/0000-0001-9200-5690","authenticated-orcid":false,"given":"Liu","family":"Zhenyuan","sequence":"first","affiliation":[{"name":"ISTA Austria"},{"name":"EPFL Switzerland"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-5062-4474","authenticated-orcid":false,"given":"Michal","family":"Piovar\u010di","sequence":"additional","affiliation":[{"name":"ISTA Austria"}]},{"given":"Christian","family":"Hafner","sequence":"additional","affiliation":[{"name":"ISTA Austria"}]},{"given":"Rapha\u00ebl","family":"Charrondi\u00e8re","sequence":"additional","affiliation":[{"name":"ISTA Austria"}]},{"ORCID":"http:\/\/orcid.org\/0000-0001-6511-9385","authenticated-orcid":false,"given":"Bernd","family":"Bickel","sequence":"additional","affiliation":[{"name":"ISTA Austria"}]}],"member":"311","published-online":{"date-parts":[[2023,5,23]]},"reference":[{"key":"e_1_2_7_2_2","doi-asserted-by":"crossref","unstructured":"AhmedA. 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