Short wave infrared single pixel camera based on random sampling
A random sampling, infrared single technology, used in image communication, color TV parts, TV system parts and other directions, can solve the problem of waste of acquisition and storage resources, achieve good dynamic range, strong penetration ability, imaging Clear details
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[0018] The present invention is based on a random sampling short-wave infrared single-pixel camera, and the specific steps are as follows:
[0019] Sparse representation of a signal:
[0020] A discrete real-valued signal x of length N, denoted as x(n), n∈[1, 2, …, N]. It can be known from signal theory that x can be expressed linearly by a set of basis ψ, T=[ψ1, ψ2,...,ψM], then: x=ψs, where s is the K sparse representation of signal x, and ψ is called the sparse basis of signal x .
[0021] The first lens group converges the scene incident light onto the DMD array:
[0022] The short-wave infrared incident light passes through the first lens group, and the light is converged on the digital micromirror device (DMD array). The DMD array is placed on the imaging surface of the first lens group to modulate the optical path of each pixel.
[0023] The DMD digital micromirror of TI is used as the measurement matrix. The DMD digital micromirror device is a fast digital optical s...
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