{"id":1118,"date":"2026-08-15T20:16:14","date_gmt":"2026-08-15T10:16:14","guid":{"rendered":"https:\/\/astroimg.org\/?page_id=1118"},"modified":"2026-08-19T21:13:05","modified_gmt":"2026-08-19T11:13:05","slug":"stuff-i-do","status":"publish","type":"page","link":"https:\/\/astroimg.org\/?page_id=1118","title":{"rendered":"Image Processing"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The two images below are of the Trifid Nebula.  It shows the raw image vs deconvolution+denoising+histogram stretch.<\/p>\n\n\n<div class=\"coca-bais-shortcode shortcode-1123\"><div class=\"shortcode-container\"><div class=\"coca-bais-container\" id=\"shortcode-1123\" data-settings=\"{&quot;orientation&quot;:&quot;horizontal&quot;,&quot;diagonal_direction&quot;:&quot;backslash&quot;,&quot;move_slider_on_hover&quot;:false,&quot;move_with_handle_only&quot;:true,&quot;click_to_move&quot;:true,&quot;no_overlay&quot;:false,&quot;show_labels&quot;:&quot;label_always_show&quot;,&quot;auto_slide_enabled&quot;:false,&quot;auto_slide_duration&quot;:4,&quot;auto_slide_direction&quot;:&quot;back_and_forth&quot;,&quot;auto_slide_pause_on_hover&quot;:false,&quot;before_label&quot;:&quot;Before&quot;,&quot;after_label&quot;:&quot;After&quot;}\" style=\"opacity: 0; max-width: 100%;\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"872\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/BEFORE.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-before\" alt=\"\" style=\"width:100%;max-width:1200px\" \/><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"872\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/AFTER.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-after\" alt=\"\" style=\"width:100%;max-width:1200px\" \/><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Two images below show a spinning disk confocal microscope image of dendritic spines on a neuron. The image shows vertical striping from the CMOS sensor.  The comparison image shows the same image after destriping.<\/p>\n\n\n<div class=\"coca-bais-shortcode shortcode-1131\"><div class=\"shortcode-container\"><div class=\"coca-bais-container\" id=\"shortcode-1131\" data-settings=\"{&quot;orientation&quot;:&quot;horizontal&quot;,&quot;diagonal_direction&quot;:&quot;backslash&quot;,&quot;move_slider_on_hover&quot;:false,&quot;move_with_handle_only&quot;:true,&quot;click_to_move&quot;:true,&quot;no_overlay&quot;:false,&quot;show_labels&quot;:&quot;label_always_show&quot;,&quot;auto_slide_enabled&quot;:false,&quot;auto_slide_duration&quot;:4,&quot;auto_slide_direction&quot;:&quot;back_and_forth&quot;,&quot;auto_slide_pause_on_hover&quot;:false,&quot;before_label&quot;:&quot;Before&quot;,&quot;after_label&quot;:&quot;After&quot;}\" style=\"opacity: 0; max-width: 100%;\"><img loading=\"lazy\" decoding=\"async\" width=\"1900\" height=\"1071\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NEURONRAW.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-before\" alt=\"\" style=\"width:100%;max-width:1900px\" \/><img loading=\"lazy\" decoding=\"async\" width=\"1900\" height=\"1071\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NEURONDESTRIPED.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-after\" alt=\"\" style=\"width:100%;max-width:1900px\" \/><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The images below show the raw image and then following denoising and deconvolution.<\/p>\n\n\n<div class=\"coca-bais-shortcode shortcode-1138\"><div class=\"shortcode-container\"><div class=\"coca-bais-container\" id=\"shortcode-1138\" data-settings=\"{&quot;orientation&quot;:&quot;horizontal&quot;,&quot;diagonal_direction&quot;:&quot;backslash&quot;,&quot;move_slider_on_hover&quot;:false,&quot;move_with_handle_only&quot;:true,&quot;click_to_move&quot;:true,&quot;no_overlay&quot;:false,&quot;show_labels&quot;:&quot;label_always_show&quot;,&quot;auto_slide_enabled&quot;:false,&quot;auto_slide_duration&quot;:4,&quot;auto_slide_direction&quot;:&quot;back_and_forth&quot;,&quot;auto_slide_pause_on_hover&quot;:false,&quot;before_label&quot;:&quot;Before&quot;,&quot;after_label&quot;:&quot;After&quot;}\" style=\"opacity: 0; max-width: 100%;\"><img loading=\"lazy\" decoding=\"async\" width=\"1900\" height=\"1071\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NEURONRAW.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-before\" alt=\"\" style=\"width:100%;max-width:1900px\" \/><img loading=\"lazy\" decoding=\"async\" width=\"1900\" height=\"1071\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NEURONFINAL.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-after\" alt=\"\" style=\"width:100%;max-width:1900px\" \/><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The images below show denoising. Shot noise is removed but colour noise remains. It is removed further down.<\/p>\n\n\n<div class=\"coca-bais-shortcode shortcode-1152\"><div class=\"shortcode-container\"><div class=\"coca-bais-container\" id=\"shortcode-1152\" data-settings=\"{&quot;orientation&quot;:&quot;horizontal&quot;,&quot;diagonal_direction&quot;:&quot;backslash&quot;,&quot;move_slider_on_hover&quot;:false,&quot;move_with_handle_only&quot;:true,&quot;click_to_move&quot;:true,&quot;no_overlay&quot;:false,&quot;show_labels&quot;:&quot;label_always_show&quot;,&quot;auto_slide_enabled&quot;:false,&quot;auto_slide_duration&quot;:4,&quot;auto_slide_direction&quot;:&quot;back_and_forth&quot;,&quot;auto_slide_pause_on_hover&quot;:false,&quot;before_label&quot;:&quot;BeforeDenoising&quot;,&quot;after_label&quot;:&quot;AfterDenoising&quot;}\" style=\"opacity: 0; max-width: 100%;\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"719\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/DENOISEBEFORE.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-before\" alt=\"\" style=\"width:100%;max-width:960px\" \/><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"719\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/DENOISEAFTER.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-after\" alt=\"\" style=\"width:100%;max-width:960px\" \/><\/div><div class=\"coca-bais-caption-wrapper\"><h3 class=\"before-image-caption\">Raw Image<\/h3><h3 class=\"after-image-caption\">Denoised<\/h3><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Below shows a Denoised vs Denoised+Deconvolved.  Two iterations of Regularized van Cittert deconvolution is used.<\/p>\n\n\n<div class=\"coca-bais-shortcode shortcode-1163\"><div class=\"shortcode-container\"><div class=\"coca-bais-container\" id=\"shortcode-1163\" data-settings=\"{&quot;orientation&quot;:&quot;horizontal&quot;,&quot;diagonal_direction&quot;:&quot;backslash&quot;,&quot;move_slider_on_hover&quot;:false,&quot;move_with_handle_only&quot;:true,&quot;click_to_move&quot;:true,&quot;no_overlay&quot;:false,&quot;show_labels&quot;:&quot;label_always_show&quot;,&quot;auto_slide_enabled&quot;:false,&quot;auto_slide_duration&quot;:4,&quot;auto_slide_direction&quot;:&quot;back_and_forth&quot;,&quot;auto_slide_pause_on_hover&quot;:false,&quot;before_label&quot;:&quot;Denoised&quot;,&quot;after_label&quot;:&quot;Den+Decon&quot;}\" style=\"opacity: 0; max-width: 100%;\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"697\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NXT.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-before\" alt=\"\" style=\"width:100%;max-width:960px\" \/><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"697\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NXT-DECON.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-after\" alt=\"\" style=\"width:100%;max-width:960px\" \/><\/div><div class=\"coca-bais-caption-wrapper\"><h3 class=\"before-image-caption\">Denoised<\/h3><h3 class=\"after-image-caption\">Denoised+Deconvolved<\/h3><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Below shows a Den+Decon vs Den+Decon+ColourDenoised. The image is colour-denoised and white balanced.<\/p>\n\n\n<div class=\"coca-bais-shortcode shortcode-1167\"><div class=\"shortcode-container\"><div class=\"coca-bais-container\" id=\"shortcode-1167\" data-settings=\"{&quot;orientation&quot;:&quot;horizontal&quot;,&quot;diagonal_direction&quot;:&quot;backslash&quot;,&quot;move_slider_on_hover&quot;:false,&quot;move_with_handle_only&quot;:true,&quot;click_to_move&quot;:true,&quot;no_overlay&quot;:false,&quot;show_labels&quot;:&quot;label_always_show&quot;,&quot;auto_slide_enabled&quot;:false,&quot;auto_slide_duration&quot;:4,&quot;auto_slide_direction&quot;:&quot;back_and_forth&quot;,&quot;auto_slide_pause_on_hover&quot;:false,&quot;before_label&quot;:&quot;Before&quot;,&quot;after_label&quot;:&quot;After&quot;}\" style=\"opacity: 0; max-width: 100%;\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"697\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NXT-DECON.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-before\" alt=\"\" style=\"width:100%;max-width:960px\" \/><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"697\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NXT-DECON-COLDEN.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-after\" alt=\"\" style=\"width:100%;max-width:960px\" \/><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Below shows a DDCD vs DDCD + Levels pair.   A histogram stretch is used to remap the black level.<\/p>\n\n\n<div class=\"coca-bais-shortcode shortcode-1170\"><div class=\"shortcode-container\"><div class=\"coca-bais-container\" id=\"shortcode-1170\" data-settings=\"{&quot;orientation&quot;:&quot;horizontal&quot;,&quot;diagonal_direction&quot;:&quot;backslash&quot;,&quot;move_slider_on_hover&quot;:false,&quot;move_with_handle_only&quot;:true,&quot;click_to_move&quot;:true,&quot;no_overlay&quot;:false,&quot;show_labels&quot;:&quot;label_always_show&quot;,&quot;auto_slide_enabled&quot;:false,&quot;auto_slide_duration&quot;:4,&quot;auto_slide_direction&quot;:&quot;back_and_forth&quot;,&quot;auto_slide_pause_on_hover&quot;:false,&quot;before_label&quot;:&quot;Before&quot;,&quot;after_label&quot;:&quot;After&quot;}\" style=\"opacity: 0; max-width: 100%;\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"697\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NXT-DECON-COLDEN.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-before\" alt=\"\" style=\"width:100%;max-width:960px\" \/><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"697\" src=\"https:\/\/astroimg.org\/wp-content\/uploads\/2026\/08\/NXT-DECON-COLDEN-LEVELS.png\" class=\"attachment-full size-full coca-bais-image coca-image-compare-after\" alt=\"\" style=\"width:100%;max-width:960px\" \/><\/div><div class=\"coca-bais-caption-wrapper\"><h3 class=\"before-image-caption\">DDC<\/h3><h3 class=\"after-image-caption\">DDCL<\/h3><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The two images below are of the Trifid Nebula. It shows the raw image vs deconvolution+denoising+histogram stretch. Two images below show a spinning disk confocal microscope image of dendritic spines on a neuron. The image shows vertical striping from the CMOS sensor. The comparison image shows the same image after destriping. The images below show&hellip; <a class=\"more-link\" href=\"https:\/\/astroimg.org\/?page_id=1118\">Continue reading <span class=\"screen-reader-text\">Image Processing<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-1118","page","type-page","status-publish","hentry","entry"],"_links":{"self":[{"href":"https:\/\/astroimg.org\/index.php?rest_route=\/wp\/v2\/pages\/1118","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/astroimg.org\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/astroimg.org\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/astroimg.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/astroimg.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1118"}],"version-history":[{"count":17,"href":"https:\/\/astroimg.org\/index.php?rest_route=\/wp\/v2\/pages\/1118\/revisions"}],"predecessor-version":[{"id":1177,"href":"https:\/\/astroimg.org\/index.php?rest_route=\/wp\/v2\/pages\/1118\/revisions\/1177"}],"wp:attachment":[{"href":"https:\/\/astroimg.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}