A Single-Pixel Camera Without Moving Parts Using Compressed Sensing
1 min read
Summary
A single-pixel camera that does not require mechanically moving parts to operate could be created using a LED matrix and a single photosensor, according to an article by Jon Bumstead on instructables.com.
The camera works on the principle of using a series of light patterns, in this case an image displayed on a 64 x 64 pixel LED matrix, to reconstruct an image of the object in front of the matrix, through a single photoresistor.
The signal processing technique that enables the reconstruction of the image is known as compressed sensing, also used in computed tomography and magnetic resonance imaging.
While not a particularly speedy method, requiring 4,096 samples to be taken for each image, the camera is fully solid state and could be adapted to work with other wavelengths.
