{"id":3762,"date":"2012-02-22T13:30:36","date_gmt":"2012-02-22T02:30:36","guid":{"rendered":"https:\/\/scienceillustrated.com.au\/blog\/?p=3762"},"modified":"2012-02-22T13:31:17","modified_gmt":"2012-02-22T02:31:17","slug":"satellite-cameras-could-be-used-for-facial-recognition","status":"publish","type":"post","link":"https:\/\/scienceillustrated.com.au\/blog\/science\/satellite-cameras-could-be-used-for-facial-recognition\/","title":{"rendered":"Satellite cameras could be used for facial recognition"},"content":{"rendered":"<div id=\"attachment_3763\" class=\"wp-caption aligncenter\" style=\"width: 605px\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3763\" title=\"surveillance\" src=\"https:\/\/scienceillustrated.com.au\/blog\/wp-content\/uploads\/2012\/02\/surveillance.gif\" alt=\"\" width=\"605\" height=\"375\" \/><\/p>\n<p class=\"wp-caption-text\">YouTube and facebook could be used alongside surveillance cameras in forensic investigations or security checks. Image: Shutterstock.<\/p>\n<\/div>\n<p><strong>Photos from surveillance cameras, YouTube and Facebook could be used for forensic investigatons.<!--more--><\/strong><\/p>\n<p>Humans can pick out familiar faces in a crowd, whether they&#8217;re laughing, crying or frowning; and machines may soon be able to do the same, using just a dot-sized part of the face.<\/p>\n<p>Unlike conventional cameras, which are designed to mimic the human eye, machines are not restricted to human vision, said facial recognition expert Professor Ajmal Mian from the <a href=\" http:\/\/www.uwa.edu.au\/\" target=\"blank\">University of Western Australia<\/a>. &#8220;Satellite cameras can acquire hundreds of images at different colours in the visible spectrum and many more in the infra-red which is not visible to the human eye.<\/p>\n<p>&#8220;I thought if machines were to recognise faces, it was logical to use the best cameras available.&#8221;<\/p>\n<p>The technology can use any part of the face, no matter how small, because multi-spectral imaging can be used to measure light reflected off a face at hundreds of discrete wavelengths in the visible spectrum and beyond. &#8220;In a normal image, a single point (or pixel) on the face carries almost no information,&#8221; Mian said.<\/p>\n<p>&#8220;Whereas in a multispectral image (satellite camera), we get the reflectance profile of that point which can be used to identify the person.&#8221;<\/p>\n<p>YouTube videos, Google images and other images from conventional cameras can also be used to create sets of facial images. These can then be merged to make a composite image that would be more meaningful to the machine.<\/p>\n<p>&#8220;Recognition based on sets of facial images from surveillance cameras, YouTube videos, Google Images or personal photo albums is more accurate because they contain more information.&#8221;<\/p>\n<p>While humans may struggle to identify someone they have only met once, the machines would be able to memorise the multiple images and match them to faces in a crowd, no matter what the expression. These images could also detect people who have used cosmetic surgery to change their appearance.<\/p>\n<p>According to Mian, the technology could be used in mobile phones, computers and robots as a user-friendly way to authenticate someone.<\/p>\n<p>&#8211; Laura Boness<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Photos from surveillance cameras, YouTube and Facebook could be used for forensic investigatons.<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[67,47,36,8,9],"tags":[],"class_list":["post-3762","post","type-post","status-publish","format-standard","hentry","category-forensics","category-innovation","category-news","category-science","category-technology"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/posts\/3762"}],"collection":[{"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/comments?post=3762"}],"version-history":[{"count":5,"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/posts\/3762\/revisions"}],"predecessor-version":[{"id":3768,"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/posts\/3762\/revisions\/3768"}],"wp:attachment":[{"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/media?parent=3762"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/categories?post=3762"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scienceillustrated.com.au\/blog\/wp-json\/wp\/v2\/tags?post=3762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}