{"id":7477,"date":"2022-08-18T18:03:22","date_gmt":"2022-08-18T18:03:22","guid":{"rendered":"https:\/\/www.pmstudios.co.uk\/blog\/?p=7477"},"modified":"2022-08-18T18:03:22","modified_gmt":"2022-08-18T18:03:22","slug":"colourising-infra-red-images","status":"publish","type":"post","link":"https:\/\/www.pmstudios.co.uk\/blog\/?p=7477","title":{"rendered":"Colourising infra-red images"},"content":{"rendered":"\n

Infra-red photos taken with an infra-red filter (that cuts out the visible light) needs processing to produce a black an white image – without a filter you get false colour infra-red as the visible light also forms part of the image. The processing is done with a photo editor such as Photoshop:<\/p>\n\n\n\n

  1. This is what you get out of the camera in infra red:<\/li><\/ol>\n\n\n\n
    \"\"
    Out of the camera in infra red<\/figcaption><\/figure>\n\n\n\n

    2. Conversion to black and white with other processing gives this type of image:<\/p>\n\n\n\n

    \"\"
    Converted to black and white<\/figcaption><\/figure>\n\n\n\n

    I decided to experiment with different ways to add colour to infra-red images. Photoshop Elements has a feature, often used to add colour to old photographs, to colourise photos. This is the result:<\/p>\n\n\n\n

    \"\"
    Colourised infra-red image<\/figcaption><\/figure>\n\n\n\n

    Not too far from the original scene. The stubble in the field and the grasses in the foreground were quite yellow. Look at the trees though and some are showing green foliage and others the white foliage typical of infra-red photography. Below is a slider “before and After” comparison:<\/p>\n\n\n


    \n\"black
    \n\"colourised\"
    \n<\/div>\n\n\n

    Inspired by the photos of the James Webb Telescope I thought I would try similar techniques to create a composite colour image. This is not as easy as it seems. I took 3 images at different infra-red wavelengths and tried adding one primary colour to each and blending the results. I found if the original blending was too good I ended up with the original black and white image!<\/p>\n\n\n\n

    I experimented with different techniques and the best I have got, so far, is this:<\/p>\n\n\n\n

    \"\"
    My own attempt at colourising using photoshop layers<\/figcaption><\/figure>\n\n\n\n

    Below I have another slider for “before and After” comparison:<\/p>\n\n\n


    \n\"black
    \n\"colourised\"
    \n<\/div>\n\n\n

    A bit surreal though. I need to think some more about this and try different methods…<\/p>\n","protected":false},"excerpt":{"rendered":"

    Infra-red photos taken with an infra-red filter (that cuts out the visible light) needs processing to produce a black an white image – without a filter you get false colour infra-red as the visible light also forms part of the image. The processing is done with a photo editor such as Photoshop: This is what … Continue reading “Colourising infra-red images”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103,126,100,3,65],"tags":[],"class_list":["post-7477","post","type-post","status-publish","format-standard","hentry","category-before-after","category-infra-red","category-photo-effects","category-photography","category-technical"],"_links":{"self":[{"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7477","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7477"}],"version-history":[{"count":7,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7477\/revisions"}],"predecessor-version":[{"id":7488,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7477\/revisions\/7488"}],"wp:attachment":[{"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7477"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7477"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7477"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}