{"id":379421,"date":"2024-08-20T08:01:16","date_gmt":"2024-08-20T08:01:16","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-about-defect-on-a-metal-surface\/"},"modified":"2024-08-20T08:01:16","modified_gmt":"2024-08-20T08:01:16","slug":"question-about-defect-on-a-metal-surface","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-about-defect-on-a-metal-surface\/","title":{"rendered":"Question about &#8220;Defect on a metal surface&#8221;"},"content":{"rendered":"<p>https:\/\/optics.ansys.com\/hc\/en-us\/articles\/360041780494-Defect-on-a-metal-surface<\/p>\n<p>1)_The illumination in this article is assumed to be a focused spot rather than illumination over a specific area. Are there any other articles that use standard image calculation with illumination over a specific area?<\/p>\n<p>2)_The EP, ES and Ex,Ey transformation confused me. Please see the description below.<\/p>\n<p>Why is the transformation matrix multiplied again in line 191 &amp; 192.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/20-08-2024-1724140290-p1.png\" alt=\"\" width=\"550\" height=\"367\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/20-08-2024-1724140323-p2.png\" alt=\"\" width=\"532\" height=\"312\"><\/p>\n","protected":false},"template":"","class_list":["post-379421","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_oembed_d78c290e3129ddd9f08adc517ba00d53":["{{unknown}}"],"_bbp_subscription":["433935","2592"],"_bbp_author_ip":["125.228.70.224"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["97"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["379421"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","433935"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["379720"],"_bbp_last_active_id":["379720"],"_bbp_last_active_time":["2024-08-21 21:37:25"]},"test":"johnny_hsiaobrightest-tech-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/379421","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/379421\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=379421"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}