{"id":1328,"date":"2026-05-17T20:56:10","date_gmt":"2026-05-17T18:56:10","guid":{"rendered":"https:\/\/strade.fit.vutbr.cz\/?p=1328"},"modified":"2026-05-17T20:57:50","modified_gmt":"2026-05-17T18:57:50","slug":"tvar-vs-textura-vliv-geometricke-struktury-a-povrchovych-vzoru-na-rozpoznavani-tvari","status":"publish","type":"post","link":"https:\/\/strade.fit.vutbr.cz\/cs\/2026\/05\/17\/shape-vs-texture-influence-of-geometric-structure-and-surface-patterns-on-face-recognition\/","title":{"rendered":"Tvar vs. textura: vliv geometrick\u00e9 struktury a povrchov\u00fdch vzor\u016f na rozpozn\u00e1v\u00e1n\u00ed tv\u00e1\u0159\u00ed"},"content":{"rendered":"\n<p class=\"text-justify wp-block-paragraph\">Syst\u00e9my pro rozpozn\u00e1v\u00e1n\u00ed tv\u00e1\u0159\u00ed jsou dnes v\u0161udyp\u0159\u00edtomn\u00e9 \u2014 p\u0159esto st\u00e1le pln\u011b nerozum\u00edme tomu, jak vlastn\u011b d\u011blaj\u00ed sv\u00e1 rozhodnut\u00ed. Rozpozn\u00e1vaj\u00ed \u010dlov\u011bka podle tvaru obli\u010deje, nebo podle jeho povrchov\u00e9 textury? Zd\u00e1nliv\u011b jednoduch\u00e1 ot\u00e1zka m\u00e1 z\u00e1sadn\u00ed d\u016fsledky pro robustnost, spravedlnost a d\u016fv\u011bryhodnost nasazen\u00fdch biometrick\u00fdch syst\u00e9m\u016f.<\/p>\n\n\n\n<p class=\"text-justify wp-block-paragraph\">Tato pr\u00e1ce na tuto ot\u00e1zku systematicky a reprodukovateln\u011b odpov\u00edd\u00e1. Za pou\u017eit\u00ed syntetick\u00fdch p\u00e1r\u016f tv\u00e1\u0159\u00ed s nez\u00e1visle \u0159\u00edzenou 3D geometri\u00ed a povrchovou texturou studie zkoum\u00e1, na kter\u00fd sign\u00e1l se modern\u00ed modely pro rozpozn\u00e1v\u00e1n\u00ed tv\u00e1\u0159\u00ed v\u00edce spol\u00e9haj\u00ed.<br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Metoda<\/h2>\n\n\n\n<p class=\"text-justify wp-block-paragraph\">Experimenty vyu\u017e\u00edvaj\u00ed kontrolovan\u00e9 syntetick\u00e9 p\u00e1ry tv\u00e1\u0159\u00ed, u nich\u017e jsou tvar a textura nez\u00e1visle prohazov\u00e1ny mezi identitami. Porovn\u00e1n\u00edm reakc\u00ed model\u016f na tv\u00e1\u0159e se spr\u00e1vnou texturou a nespr\u00e1vn\u00fdm tvarem oproti tv\u00e1\u0159\u00edm se spr\u00e1vn\u00fdm tvarem a nespr\u00e1vnou texturou studie p\u0159\u00edmo kvantifikuje m\u00edru spol\u00e9h\u00e1n\u00ed na jednotliv\u00e9 sign\u00e1ly. Studie zahrnuje \u010dty\u0159i \u0161pi\u010dkov\u00e9 modely pro rozpozn\u00e1v\u00e1n\u00ed tv\u00e1\u0159\u00ed. Aby bylo mo\u017en\u00e9 ur\u010dit, kter\u00e9 oblasti obli\u010deje se na rozhodnut\u00edch nejv\u00edce pod\u00edlej\u00ed, byla vyu\u017eita prostorov\u00e1 anal\u00fdza pomoc\u00ed okluzn\u00edch heatmap \u2014 zvl\u00e1\u0161\u0165 pro rozhodnut\u00ed \u0159\u00edzen\u00e1 tvarem a zvl\u00e1\u0161\u0165 pro rozhodnut\u00ed \u0159\u00edzen\u00e1 texturou.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>V\u00fdsledky<\/strong><\/h2>\n\n\n\n<p class=\"text-justify wp-block-paragraph\">Hodnocen\u00e9 modely vykazuj\u00ed tendenci k preferenci textury p\u0159ed tvarem \u2014 v\u00fdsledek konzistentn\u00ed s poznatky z oblasti obecn\u00e9ho rozpozn\u00e1v\u00e1n\u00ed objekt\u016f, nyn\u00ed v\u0161ak systematicky zkouman\u00fd pro modely specializovan\u00e9 p\u0159\u00edmo na identitu osoby. Prostorov\u00e1 anal\u00fdza odhaluje, \u017ee rozpozn\u00e1v\u00e1n\u00ed na z\u00e1klad\u011b textury se v\u00fdrazn\u011bji op\u00edr\u00e1 o periorbit\u00e1ln\u00ed oblast, zat\u00edmco rozpozn\u00e1v\u00e1n\u00ed na z\u00e1klad\u011b tvaru je rozlo\u017eeno rovnom\u011brn\u011bji nap\u0159\u00ed\u010d cel\u00fdm obli\u010dejem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pro\u010d je to d\u016fle\u017eit\u00e9<\/strong><\/h2>\n\n\n\n<p class=\"text-justify wp-block-paragraph\">Porozum\u011bn\u00ed tomu, jak\u00e9 informace \u0159\u00edd\u00ed p\u0159edpov\u011bdi modelu, je z\u00e1sadn\u00ed pro auditov\u00e1n\u00ed spravedlnosti a zodpov\u011bdnosti syst\u00e9m\u016f. Tato pr\u00e1ce poskytuje reprodukovateln\u00fd r\u00e1mec pro kvantifikaci a vizualizaci toho, jak hlubok\u00e9 s\u00edt\u011b zpracov\u00e1vaj\u00ed sign\u00e1ly identity tv\u00e1\u0159e \u2014 a otev\u00edr\u00e1 cestu k budov\u00e1n\u00ed d\u016fv\u011bryhodn\u011bj\u0161\u00edch biometrick\u00fdch syst\u00e9m\u016f.<\/p>\n\n\n\n<p class=\"text-justify wp-block-paragraph\">\u010cl\u00e1nek bude prezentov\u00e1n na konferenci <strong>IEEE International Conference on Automatic Face and Gesture Recognition (FG 2026)<\/strong> \u2014 jedn\u00e9 z nejv\u00fdznamn\u011bj\u0161\u00edch konferenc\u00ed v oblasti rozpozn\u00e1v\u00e1n\u00ed tv\u00e1\u0159\u00ed.<\/p>\n\n\n\n<p class=\"text-justify wp-block-paragraph\">Filip Plesko, Tom\u00e1\u0161 Goldmann, Kamil Malinka, Petr Han\u00e1\u010dek <em>Shape vs. Texture: Influence of Geometric Structure and Surface Patterns on Face Recognition<\/em> IEEE FG 2026 <a href=\"https:\/\/fg2026.ieee-biometrics.org\">fg2026.ieee-biometrics.org<\/a> Podpo\u0159eno FIT VUT Brno.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Syst\u00e9my pro rozpozn\u00e1v\u00e1n\u00ed tv\u00e1\u0159\u00ed jsou dnes v\u0161udyp\u0159\u00edtomn\u00e9 \u2014 p\u0159esto st\u00e1le pln\u011b nerozum\u00edme tomu, jak vlastn\u011b d\u011blaj\u00ed sv\u00e1 rozhodnut\u00ed. Rozpozn\u00e1vaj\u00ed \u010dlov\u011bka podle tvaru obli\u010deje, nebo podle jeho povrchov\u00e9 textury? Zd\u00e1nliv\u011b jednoduch\u00e1 ot\u00e1zka m\u00e1 z\u00e1sadn\u00ed d\u016fsledky pro robustnost, spravedlnost a d\u016fv\u011bryhodnost nasazen\u00fdch biometrick\u00fdch syst\u00e9m\u016f. Tato pr\u00e1ce na tuto ot\u00e1zku systematicky a reprodukovateln\u011b [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1330,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ub_ctt_via":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1328","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-strade"],"featured_image_src":"https:\/\/strade.fit.vutbr.cz\/wp-content\/uploads\/2026\/05\/download-1-e1779044242393.png","author_info":{"display_name":"igoldmann","author_link":"https:\/\/strade.fit.vutbr.cz\/index.php\/author\/igoldmann\/"},"_links":{"self":[{"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/posts\/1328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/comments?post=1328"}],"version-history":[{"count":3,"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/posts\/1328\/revisions"}],"predecessor-version":[{"id":1333,"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/posts\/1328\/revisions\/1333"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/media\/1330"}],"wp:attachment":[{"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/media?parent=1328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/categories?post=1328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/strade.fit.vutbr.cz\/index.php\/wp-json\/wp\/v2\/tags?post=1328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}