{"id":39371,"date":"2016-08-01T14:53:55","date_gmt":"2016-08-01T14:53:55","guid":{"rendered":"http:\/\/www.labri.fr\/perso\/barla\/blog\/?p=39371"},"modified":"2016-08-01T15:12:12","modified_gmt":"2016-08-01T15:12:12","slug":"siggraph-2016","status":"publish","type":"post","link":"https:\/\/www.labri.fr\/perso\/barla\/blog\/?p=39371","title":{"rendered":"Siggraph 2016"},"content":{"rendered":"<p id=\"top\" \/>\n<h3>Pixar&#8217;s &#8220;Finding Dory&#8221; &#8211; Character appearance<\/h3>\n<ul>\n<li>Avoid &#8220;muddy&#8221; desaturation in HSV by using a mixing of opponent colors.<\/li>\n<li>Glazing effect in watercolor obtained by overlay blending mode. <em>As in Adrien&#8217;s work!<\/em><\/li>\n<\/ul>\n<h3>Modeling &amp; fitting of yarns at the fiber level<\/h3>\n<ul>\n<li>What are the impacts of the different fiber params from a visual standpoint? <em>Not only yarns, but probably also patterns should have an impact on local light transport. Optical parameters of fibers (core, etc) are not taken into account.<\/em><\/li>\n<\/ul>\n<h3>SV-BRDF capture using Neural Networks<\/h3>\n<ul>\n<li>Enforce stationarity and use CNN to extract normals, but still far from GelSight ground truth. <em>Can the normal map be extracted by a differential analysis, taking into account the light source configuration?<\/em><\/li>\n<\/ul>\n<h3>ZoeMaTrope for material visualization<\/h3>\n<ul>\n<li>A simple linear mixture of 3 roughnesses is claimed to be sufficient to produce a correct highlight. <em>Check if this is really the case, and if yes try to understand why this is so.<\/em><\/li>\n<\/ul>\n<h3>Multiple scattering using the Smith model<\/h3>\n<ul>\n<li>Different bounces appear as scaled versions of each other for the Beckmann distribution. <em>Why is that so? When does it become more complex? How can it be used for games?<\/em><\/li>\n<\/ul>\n<h3>Local Fourier analysis of Light Transport<\/h3>\n<ul>\n<li><em>Use covariance tracing to turn a Fresnel reflector into a slightly rough micro-BRDF. Avoid curvature? Fit BRDF slices to covariance? Assume locally constant Fresnel?<\/em><\/li>\n<\/ul>\n<h3>Stylit: Lit Sphere based synthesis<\/h3>\n<ul>\n<li>One limitation is that local shape details tend to get lost after synthesis. <em>Use surface- and image-based tensors as a guide to ensure shape is well reproduced.<\/em><\/li>\n<\/ul>\n<h3>Band Sifting for material editing<\/h3>\n<ul>\n<li>Test commutativity between band sifting and flow-guided warping, check their independency. <em>BS ignores orientation, while FGW ignores magnitudes.<\/em><\/li>\n<li><em>Combine both approaches to reach more complex effects with translucency, hazy gloss and roughness, light rotation, etc. Consider ST as a canvas onto which material editing operates? <\/em><\/li>\n<\/ul>\n<h3>Editing of measured BRDF data using models<\/h3>\n<ul>\n<li>Use fitted model as a guide to editing, then later report residuals clamped to zero. <em>Requires choice of materials, no new effect, loss of negative residuals, costly for SV-BRDF (needs 2 residuals for interpolation).<\/em><\/li>\n<\/ul>\n<h3>Artist-based dynamic 2D animation<\/h3>\n<ul>\n<li><em>Deformations create S-shaped instead of arc-shaped boundaries. Is that due to plastic parameters? Little bulges appear, no direct control over countours either. <\/em><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Pixar&#8217;s &#8220;Finding Dory&#8221; &#8211; Character appearance Avoid &#8220;muddy&#8221; desaturation in HSV by using a mixing of opponent colors. Glazing effect in watercolor obtained by overlay blending mode. As in Adrien&#8217;s work! Modeling &amp; fitting of yarns at the fiber level What are the impacts of the different fiber params from a visual standpoint? Not only &#8230; <a title=\"Siggraph 2016\" class=\"read-more\" href=\"https:\/\/www.labri.fr\/perso\/barla\/blog\/?p=39371\" aria-label=\"Read more about Siggraph 2016\">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":[81],"tags":[],"class_list":["post-39371","post","type-post","status-publish","format-standard","hentry","category-talks"],"_links":{"self":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts\/39371","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=39371"}],"version-history":[{"count":3,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts\/39371\/revisions"}],"predecessor-version":[{"id":39401,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=\/wp\/v2\/posts\/39371\/revisions\/39401"}],"wp:attachment":[{"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=39371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=39371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.labri.fr\/perso\/barla\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=39371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}