{"id":18950,"date":"2022-01-13T17:45:35","date_gmt":"2022-01-14T01:45:35","guid":{"rendered":"http:\/\/jnack.com\/blog\/?p=18950"},"modified":"2022-01-13T17:45:37","modified_gmt":"2022-01-14T01:45:37","slug":"different-strokes-3d-surface-analysis-helps-computers-identify-painters","status":"publish","type":"post","link":"http:\/\/jnack.com\/blog\/2022\/01\/13\/different-strokes-3d-surface-analysis-helps-computers-identify-painters\/","title":{"rendered":"Different Strokes: 3D surface analysis helps computers identify painters"},"content":{"rendered":"\n<p>Researchers at NVIDIA &amp; Case Western Reserve University have <a href=\"https:\/\/developer.nvidia.com\/blog\/neural-network-pinpoints-artist-by-examining-a-paintings-brushstrokes\/?mkt_tok=MTU2LU9GTi03NDIAAAGB9EBvoVCDJAHg-aoXHrn-1kOySAofLgBv3792v51cnasLjPBK2bSLVFmzBNjRfWX9Hqe7vcm2U88heoNQVLWKFS1PlaBEHjr9EQ3SpijDIWIrDI45\">developed<\/a> an algorithm that can distinguish different painters\u2019 brush strokes \u201cat the bristle level\u201d:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>Extracting topographical data from a surface with an optical profiler, the researchers scanned 12 paintings of the same scene, painted with identical materials, but by four different artists. Sampling small square patches of the art, approximately 5 to 15 mm, the optical profiler detects and logs minute changes on a surface, which can be attributed to how someone holds and uses a paintbrush.\u00a0<\/p><\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>They then trained an ensemble of convolutional neural networks to find patterns in the small patches, sampling between 160 to 1,440 patches for each of the artists. Using NVIDIA GPUs with\u00a0<a rel=\"noreferrer noopener\" href=\"https:\/\/developer.nvidia.com\/cudnn\" target=\"_blank\">cuDNN<\/a>-accelerated deep learning frameworks, the algorithm matches the samples back to a single painter.<\/p><\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>The team tested the algorithm against 180 patches of an artist\u2019s painting, matching the samples back to a painter at about 95% accuracy.\u00a0<\/p><\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/AI-Art_main.jpeg\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"439\" src=\"http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/AI-Art_main-1024x439.jpeg\" alt=\"\" class=\"wp-image-18953\" srcset=\"http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/AI-Art_main-1024x439.jpeg 1024w, http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/AI-Art_main-300x129.jpeg 300w, http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/AI-Art_main-768x329.jpeg 768w, http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/AI-Art_main.jpeg 1400w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/40494_2021_618_Fig1_HTML.png\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"505\" src=\"http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/40494_2021_618_Fig1_HTML-1024x505.png\" alt=\"\" class=\"wp-image-18951\" srcset=\"http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/40494_2021_618_Fig1_HTML-1024x505.png 1024w, http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/40494_2021_618_Fig1_HTML-300x148.png 300w, http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/40494_2021_618_Fig1_HTML-768x379.png 768w, http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/40494_2021_618_Fig1_HTML-1536x757.png 1536w, http:\/\/jnack.com\/blog\/wp-content\/uploads\/2022\/01\/40494_2021_618_Fig1_HTML.png 1960w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Researchers at NVIDIA &amp; Case Western Reserve University have developed an algorithm that can distinguish different painters\u2019 brush strokes \u201cat the bristle level\u201d: Extracting topographical data from a surface with an optical profiler, the researchers scanned 12 paintings of the same scene, painted with identical materials, but by four different artists. Sampling small square patches [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[66,2],"tags":[],"_links":{"self":[{"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/posts\/18950"}],"collection":[{"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/comments?post=18950"}],"version-history":[{"count":2,"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/posts\/18950\/revisions"}],"predecessor-version":[{"id":18954,"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/posts\/18950\/revisions\/18954"}],"wp:attachment":[{"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/media?parent=18950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/categories?post=18950"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/jnack.com\/blog\/wp-json\/wp\/v2\/tags?post=18950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}