{"id":40869,"date":"2023-06-03T10:53:04","date_gmt":"2023-06-03T10:53:04","guid":{"rendered":"https:\/\/www.labri.fr\/perso\/barla\/blog\/?p=40869"},"modified":"2023-06-05T14:51:44","modified_gmt":"2023-06-05T14:51:44","slug":"layered-porous-media","status":"publish","type":"post","link":"https:\/\/www.labri.fr\/perso\/barla\/blog\/?p=40869","title":{"rendered":"Layered &#038; porous media"},"content":{"rendered":"<p id=\"top\" \/>\n<p><strong><em>\u2794 What is the (multi-scale) appearance space of porous materials and how do they evolve dynamically under different layers of water? How may such appearance be adapted to the scale at which different animals live and to their visual accuity?<\/em><\/strong><\/p>\n\n\n\n<div style=\"height:18px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Wet Granular BRDF model<\/h3>\n\n\n\n<p>Derive a correlated GAF and corresponding diffuse model for surfacic component.<\/p>\n\n\n\n<p>Study the effect of size and shape variations of micrograins, including glints and retro-reflection.<\/p>\n\n\n\n<p>Add waters at different stages: top layer, correlated to top grains, capillaries, coated grains, inside grains.<\/p>\n\n\n\n<p><em>\u2192<\/em> <em>How is correlation among layers perceived? How are immersed elements affected by a different light field at different scales?<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Micrograin BRDF for porous layers<\/h3>\n\n\n\n<p>Distributions of micrograins yield a new microfacet model for porous layers with interesting effects (grazing angles, hazy gloss, etc).<\/p>\n\n\n\n<p><em>\u2192 How should the model be extended to deal with granular models of varying shape and size?<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Impact of surface tension on wet surface appearance<\/h3>\n\n\n\n<p>Surface tension creates meniscus at immersed zones boundaries, concave puddles in wet zones, and roughness variations toward moist zones.<\/p>\n\n\n\n<p><em>\u2192 Which mechanical properties should be taken into account to derive a riguorous wet surface model?<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Inverse design of layered materials<\/h3>\n\n\n\n<p>Equivalence classes of layered structures providing similar material appearance.<\/p>\n\n\n\n<p><em>\u2192 How to take a similar approach with more biologically\/physically-realistic materials?<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u2794 What is the (multi-scale) appearance space of porous materials and how do they evolve dynamically under different layers of water? How may such appearance be adapted to the scale at which different animals live and to their visual accuity? Wet Granular BRDF model Derive a correlated GAF and corresponding diffuse model for surfacic component. &#8230; <a title=\"Layered &#038; porous media\" class=\"read-more\" href=\"https:\/\/www.labri.fr\/perso\/barla\/blog\/?p=40869\" aria-label=\"Read more about Layered &#038; porous media\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[774],"tags":[],"class_list":["post-40869","post","type-post","status-publish","format-standard","hentry","category-projects"],"_links":{"self":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts\/40869","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=40869"}],"version-history":[{"count":7,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts\/40869\/revisions"}],"predecessor-version":[{"id":40973,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts\/40869\/revisions\/40973"}],"wp:attachment":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=40869"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40869"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}