Sent to you by Dana via Google Reader:
Adam Harvey is currently writing his thesis at the ITP and his topic is Computer Vision Dazzle. He's researching and developing privacy enhancing counter technology, to protect individual privacy for everyone. So here you can find some makeup patterns which make it impossible for the OpenCV library and it's Haar cascade files, to detect a face. Fun times ahead!
About this image:
Images with a red square tested positive, a face was found
Images without a red square tested negative, no face was found
Images under the section "TEST PATTERNS" are made according to results of the Haar deconstruction
Images under "RANDOM PATTERNS" are random doodles made without the anti-face detection patterns in mind
Images underneath the "NO PATTERNS" heading are left untouched to show that the face detection works well on simple line drawings
found via @zachlieberman
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