{"id":4467,"date":"2016-10-08T14:49:06","date_gmt":"2016-10-08T20:49:06","guid":{"rendered":"http:\/\/www.realtimerendering.com\/blog\/?p=4467"},"modified":"2016-10-08T14:49:06","modified_gmt":"2016-10-08T20:49:06","slug":"real-world-sampling-artifact","status":"publish","type":"post","link":"https:\/\/www.realtimerendering.com\/blog\/real-world-sampling-artifact\/","title":{"rendered":"Real-World Sampling “Artifact”"},"content":{"rendered":"

[A repost, due to WordPress weirdness – sorry about that. Note to self: don’t paste images into WordPress, always upload and insert them.]<\/p>\n

I’m seeing this more and more in my neighborhood in the evening:<\/p>\n

\"shadows\"
\nIt’s the shadow of a tree on pavement, superimposed 3 times. It’s because they’ve been installing new LED streetlights with 3 bulbs.<\/p>\n

Hard for me to photograph the light source well, but a reflection of some sort in the camera shows the three bulbs in the upper right:<\/p>\n

\"light\"<\/p>\n

It’s like the artifacts you see when anyone tries to approximate an area light with point lights. So with the advent of LEDs, I guess we won’t need light area sampling algorithms as much?<\/p>\n

Maybe one for the Real Artifacts gallery<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

[A repost, due to WordPress weirdness – sorry about that. Note to self: don’t paste images into WordPress, always upload and insert them.] I’m seeing this more and more in my neighborhood in the evening: It’s the shadow of a tree on pavement, superimposed 3 times. It’s because they’ve been installing new LED streetlights with […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4467","post","type-post","status-publish","format-standard","hentry","category-misc"],"_links":{"self":[{"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/posts\/4467","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/comments?post=4467"}],"version-history":[{"count":1,"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/posts\/4467\/revisions"}],"predecessor-version":[{"id":4468,"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/posts\/4467\/revisions\/4468"}],"wp:attachment":[{"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/media?parent=4467"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/categories?post=4467"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.realtimerendering.com\/blog\/wp-json\/wp\/v2\/tags?post=4467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}