{"id":393,"date":"2008-01-13T21:03:13","date_gmt":"2008-01-13T20:03:13","guid":{"rendered":"http:\/\/cb.nowan.net\/blog\/2008\/01\/13\/stereoscopic-3d-film-and-animation-getting-it-right\/"},"modified":"2008-01-13T21:03:13","modified_gmt":"2008-01-13T20:03:13","slug":"stereoscopic-3d-film-and-animation-getting-it-right","status":"publish","type":"post","link":"https:\/\/cb.nowan.net\/blog\/2008\/01\/13\/stereoscopic-3d-film-and-animation-getting-it-right\/","title":{"rendered":"Stereoscopic 3D Film and Animation – Getting It Right"},"content":{"rendered":"

Ken Wit<\/span>t<\/span>lief, a senior engineer at<\/span> Vuzix (formerly\u00c2\u00a0 Icuiti Corp), “makers of VideoEyewear and ot<\/span>her micro display syst<\/span>ems”, has written an excellent article about do’s and don’ts when creating a stereoscopic entertainment<\/a>. Here are some highlights of the article, but I highly recommend you to read it all :<\/p>\n

(…) our dept<\/span>h percept<\/span>ion is only good out<\/span> t<\/span>o approximat<\/span>ely 200 yards. Beyond t<\/span>hat<\/span> dist<\/span>ance everyt<\/span>hing appears t<\/span>o be flat<\/span>, and we use sideways mot<\/span>ion t<\/span>o judge dist<\/span>ances. (…)<\/p>\n

T<\/span>he first<\/span> rule<\/strong> of get<\/span>t<\/span>ing it<\/span> right<\/span>: you have t<\/span>o know how t<\/span>he images will be viewed<\/strong>. You are creat<\/span>ing a virt<\/span>ual space in front<\/span> of t<\/span>he viewer and you must<\/span> know what<\/span> t<\/span>hat<\/span> space is, before you can st<\/span>art<\/span> placing shapes and object<\/span>s at<\/span> different<\/span> dist<\/span>ances. T<\/span>he reward for your at<\/span>t<\/span>ent<\/span>ion t<\/span>o t<\/span>his det<\/span>ail is t<\/span>hat<\/span> it<\/span> is possible t<\/span>o creat<\/span>e images t<\/span>hat<\/span> will appear t<\/span>o exist<\/span> in real space, across t<\/span>he front<\/span> of t<\/span>he t<\/span>heat<\/span>er, ext<\/span>ending halfway out<\/span> t<\/span>he screen t<\/span>owards t<\/span>he viewer, and receding back for 200 yards or more.<\/p>\n

(…) Focus is an issue wit<\/span>h no easy solut<\/span>ion. T<\/span>he best<\/span> we can do wit<\/span>h exist<\/span>ing syst<\/span>ems is t<\/span>o not<\/span> violat<\/span>e t<\/span>he convergence\/focus lock t<\/span>he viewers eyes have learned over t<\/span>heir lifet<\/span>ime t<\/span>oo harshly. [Don’t] push object<\/span>s off t<\/span>he screen more t<\/span>han half t<\/span>he dist<\/span>ance t<\/span>o t<\/span>he viewer<\/strong> (…). <\/span><\/p>\n

(…) T<\/span>he average person has an Int<\/span>er Pupil Dist<\/span>ance (IPD) of 2.5 inches.\u00c2\u00a0\u00c2\u00a0 (…)\u00c2\u00a0 limit<\/span> t<\/span>he separat<\/span>ion on t<\/span>he screen t<\/span>o t<\/span>he minimum IPD t<\/span>hat<\/span> might<\/span> be present<\/span> in t<\/span>he audience: around 2 inches.<\/p>\n

(…)\u00c2\u00a0 T<\/span>he second rule<\/strong> for get<\/span>t<\/span>ing it<\/span> right<\/span>: don’t<\/span> t<\/span>urn t<\/span>he audience int<\/span>o giant<\/span>s! You must<\/span> use t<\/span>he correct<\/span> camera separat<\/span>ion for t<\/span>he camera field of view<\/strong>. For animat<\/span>ion t<\/span>his means t<\/span>hat<\/span> first<\/span> you must<\/span> put<\/span> your viewer int<\/span>o t<\/span>he virt<\/span>ual space it<\/span>self. If you are animat<\/span>ing bugs t<\/span>hen how t<\/span>all is your viewer? Do you want<\/span> it<\/span> t<\/span>o feel like t<\/span>he person wat<\/span>ching t<\/span>he film is 6 feet<\/span> t<\/span>all, looking at<\/span> bugs on t<\/span>he ground? Or do you want<\/span> t<\/span>o bring your viewer down t<\/span>o bug size, so his eyes (your cameras) are t<\/span>he same dist<\/span>ance apart<\/span> as t<\/span>he bugs eyes?<\/p>\n

(…) T<\/span>he t<\/span>hird rule<\/strong> for get<\/span>t<\/span>ing it<\/span> right<\/span>: set<\/span> your cameras t<\/span>o converge on t<\/span>he most<\/span> dist<\/span>ant<\/span> object<\/span>s in view, and adjust<\/span> your separat<\/span>ion so t<\/span>hat<\/span> infinit<\/span>y is 2 inches apart<\/span> at<\/span> t<\/span>he screen, and let<\/span> t<\/span>he foreground object<\/span>s find t<\/span>heir own place in t<\/span>hat<\/span> space. Resist<\/span> t<\/span>he t<\/span>empt<\/span>at<\/span>ion t<\/span>o converge your cameras on t<\/span>he cent<\/span>er of at<\/span>t<\/span>ent<\/span>ion<\/strong>. If you really want<\/span> t<\/span>o lock t<\/span>he viewers at<\/span>t<\/span>ent<\/span>ion on one area, t<\/span>hen use a dept<\/span>h of focus effect<\/span> t<\/span>o blur t<\/span>he rest<\/span> of t<\/span>he image, so t<\/span>he viewer will not<\/span> be inclined t<\/span>o look around t<\/span>he area at<\/span> ot<\/span>her t<\/span>hings.<\/p><\/blockquote>\n

(…) T<\/strong><\/span>he fourt<\/span>h rule<\/strong> for get<\/span>t<\/span>ing it<\/span> right<\/span>: you must<\/span> know t<\/span>he t<\/span>iming of t<\/span>he project<\/span>ion syst<\/span>em<\/strong>. (…) But<\/span> when object<\/span>s move quickly t<\/span>here comes a point<\/span> when your brain sees t<\/span>he left<\/span> view in one place, and t<\/span>he right<\/span> view in anot<\/span>her place, but<\/span> t<\/span>hen t<\/span>he left<\/span> view has moved considerably and your brain cannot<\/span> pull t<\/span>hem t<\/span>oget<\/span>her. T<\/span>he result<\/span> is you see t<\/span>wo object<\/span>s: t<\/span>he st<\/span>ereoscopic 3D effect<\/span> is lost<\/span>.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

Ken Wittlief, a senior engineer at Vuzix (formerly\u00c2\u00a0 Icuiti Corp), “makers of VideoEyewear and other micro display systems”, has written an excellent article about do’s and don’ts when creating a stereoscopic entertainment. Here are some highlights of the… <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[214,267,266,218,268],"_links":{"self":[{"href":"https:\/\/cb.nowan.net\/blog\/wp-json\/wp\/v2\/posts\/393"}],"collection":[{"href":"https:\/\/cb.nowan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cb.nowan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cb.nowan.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cb.nowan.net\/blog\/wp-json\/wp\/v2\/comments?post=393"}],"version-history":[{"count":0,"href":"https:\/\/cb.nowan.net\/blog\/wp-json\/wp\/v2\/posts\/393\/revisions"}],"wp:attachment":[{"href":"https:\/\/cb.nowan.net\/blog\/wp-json\/wp\/v2\/media?parent=393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cb.nowan.net\/blog\/wp-json\/wp\/v2\/categories?post=393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cb.nowan.net\/blog\/wp-json\/wp\/v2\/tags?post=393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}