{"id":1105,"date":"2013-02-05T13:35:39","date_gmt":"2013-02-05T11:35:39","guid":{"rendered":"http:\/\/wordpress.khm.de\/sag\/?p=1105"},"modified":"2013-02-05T13:35:39","modified_gmt":"2013-02-05T11:35:39","slug":"anti-facial-recognition-strategies-defeated","status":"publish","type":"post","link":"https:\/\/sag.khm.de\/?p=1105","title":{"rendered":"Anti-Facial Recognition strategies defeated"},"content":{"rendered":"

We had some fun at my ‘Raumkontrolle’ block seminar, trying out our Netavis Observer ‘face recognition’ software on various anti-Anti-Facial Recognition strategies. Seems they all used the same (Open-CV?) algorithm, and while I’m sure these strategies work against that, our (not very reliable) software looked right through the make-up and noise-glasses.<\/p>\n

First test: \u00a0CV Dazzle project.<\/a>\u00a0The artist says the make-up and hairdo effectively stops software from recognizing faces. Let’s see…\u00a0we pointed our IP-cam at a computer screen, the easiest way to get images from one system into another.<\/p>\n

 <\/p>\n

\"\"<\/p>\n

\n
\n
CV-Dazzle make-up working as expected. The bottom row of faces is not recognized.<\/dd>\n<\/dl>\n
<\/div>\n<\/div>\n

\"Netavis-screen-photos-13\"<\/p>\n

Same here.<\/p>\n

 <\/p>\n

\"Netavis-screen-photos-12\"<\/p>\n

\n
\n
Oops. The algorithm got gender and age wrong, but hey. Not too bad!<\/dd>\n<\/dl>\n
<\/div>\n<\/div>\n

\"Seems<\/p>\n

\n
\n
It also seems to be learning as we go.<\/dd>\n<\/dl>\n
<\/div>\n<\/div>\n

Next test:\u00a0Isao Echizen’s modified sun glasses<\/a>:<\/p>\n

\"Screen<\/p>\n

The project is called “Privacy Protection Techniques Using Differences in Human and Device Sensitivity”. If I understand it correctly, infra-red light (invisible to the human eye) in the eye-to-nose bridge region in the face is meant to irritate face recognition algorithms.<\/p>\n

Again, we pointed our IP-cam at a computer screen.<\/p>\n

\"Netavis-screen-photos-06\"
\u00a0<\/span><\/figcaption><\/figure>\n
\n
\n
Bingo! Even if we take into account that a video of pink-ish light on a computer screen isn’t the same as actual IR light, it doesn’t seem to work too well…<\/dd>\n<\/dl>\n
<\/div>\n<\/div>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

We had some fun at my ‘Raumkontrolle’ block seminar, trying out our Netavis Observer ‘face recognition’ software on various anti-Anti-Facial Recognition strategies. Seems they all used the same (Open-CV?) algorithm, and while I’m sure these strategies work against that, our (not very reliable) software looked right through the make-up and noise-glasses. First test: \u00a0CV Dazzle […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_vp_format_video_url":"","_vp_image_focal_point":[],"footnotes":""},"categories":[59,90,52,61],"tags":[],"class_list":["post-1105","post","type-post","status-publish","format-standard","hentry","category-current","category-facial-recognition","category-seminars","category-technology"],"_links":{"self":[{"href":"https:\/\/sag.khm.de\/index.php?rest_route=\/wp\/v2\/posts\/1105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sag.khm.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sag.khm.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sag.khm.de\/index.php?rest_route=\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/sag.khm.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1105"}],"version-history":[{"count":0,"href":"https:\/\/sag.khm.de\/index.php?rest_route=\/wp\/v2\/posts\/1105\/revisions"}],"wp:attachment":[{"href":"https:\/\/sag.khm.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sag.khm.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sag.khm.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}