Introduction to Event Based Cameras
Event-based cameras use a very different approach to capturing and displaying data, registering the change in signal per pixel rather than the total integrated intensity per pixel. The change can be positive or negative and it can be measured over a very short time interval if desired. The output of the sensor then becomes the magnitude of the change at each pixel during the specified integration period.
As an example, if you were looking at an Automobile that is stationary and under static illumination conditions, you would essentially get a blank image. But if you drove the car, you would see all the pixels in the field of view that changed (those showing the car outline and details) but the background would disappear if it was static. Here is an example showing slow motion video of a ceiling fan.
Video of Ceiling Fan in Slow Motion Taken with Event Camera
The main advantage of this technology is the reduction in the bandwidth of the signal (less data needs to be returned) so a simple interface can report back on high speed changes with not much difficulty. This means that a USB3 type camera can collect images at kiloherz rates and higher, as long as not all the pixels are changing in the image at the same time.
In collaboration with CenturyArks Company, Envisionate is making this exciting new technology available to the North American marketplace. Contact us today to arrange your demonstration or to purchase a SilkyEvCam HD Development Kit that includes the camera, a lens, a mini-tripod and a storage case.