"Light from these near-infrared LEDs can't be seen by the human eye, but when it passes through a camera's imaging device, it appears bright. The LEDs are installed in these locations because, a feature of face detection is, the eyes and part of the nose appear dark, while another part of the nose appears bright. So, by placing light sources mostly near dark parts of the face, we've succeeded in canceling face detection characteristics, making face detection fail."
Just one of the reasons this is dumb: if you're already going to make the assumption that the cameras don't have IR filters, then you can just do what those "anti-paparazzi" boxes do and just blind the camera with a single LED so that it gets no picture at all, instead of positioning the LEDs to vex the algorithm you know about today.
Also, we know how well this style of eyewear worked out when it was called the "Opti-Grab" in The Jerk.
I like the GIFs, though.
I couldn't find the clip of Steve Martin signing the checks in the class-action suit, so instead I leave you with this:
Person will be detained immediately if anyone is looking at feeds in real time. #moronic
If it's a camera designed to also work by night, it's probably IR sensitive enough for this to work.
The real question is, will this serve as a gevulot for Google Glass?
To a point, though it doesn't do much for gait detection, obviously.
Then again, there aren't as many videos of my gait as there are photos of my face on the internet.
In fact, most digital cameras are sensitive to IR, and I've never heard of IR being filtered out-- it's just uniform background noise that you can get rid of with histogramming. If you want to test your own digicam for IR sensitivity, just aim a remote control at the aperture and watch the glimmering when you push the remote's buttons.
my iphone had IR filters on it's camera.
security cameras that have the IR LED illumination rings around them, well, they have to be sensitive to IR.
also, Jamie, your youtube embed fails here on firefox too.
There is a lot of misunderstanding of how video imaging technologies work. There are 2 major digital imaging sensors used in security cameras (all digital imaging technology, really): CMOS and CCD. Both CMOS and CCD imaging devices are sensitive to the entire range of visible light as well as some invisible light spectra. As shown by this graph, CCD (and CMOS) sensors are far more sensitive to the infrared range of light than the visible range.
In order to work in dark conditions (e.g. night), security cameras are lined with a ring of IR LEDs to covertly illuminate their subjects. Obviously, any form of IR filtering would filter out the desirable wavelengths of light. In this unfiltered state, an IR LED would be very bright to the sensor, however this would stand out as a beacon to anyone actually looking at the display.
During daylight, the conditions are very different. There is a tremendous amount of IR light being emitted from the sun and reflected by the environment. Unfiltered sensors filter can be oversaturated or generate images that appear "washed out" and, in color cameras, with distorted colors. In order to be effective, outdoor security cameras have IR cut filters. The IR cut filter is a physical device and looks like this. It's a translucent piece of glass with a slightly blue hue that turns pinkish as you angle it.
Day/night security cameras are fitted with a mechanically actuated IR cut filter to eliminate IR during the day and permit it in low light conditions. If you have a day/night security camera, you can hear the filter engage with an audible click. Try it out by alternating the lights on and off in a room while standing near the camera. This feature is often advertised, example .
IR cut sensors are pretty standard in daytime security cameras, professional and consumer photo and video cameras, and phones. Traditionally they have been absent in web cameras, integrated cameras on laptops, and tablets that these researchers tend to use. It would seem to me that one could "prove" their claims of efficacy more clearly by demonstrating their techniques on a wide variety of security cameras in the environment in which this would be useful and not whatever Logitech Webcam they found at Walmart.
So, go ahead and strap on those IR LEDs to your face, but remember that you're going for the infrared version of this classic and not anything really effective.