Patent Document ID: 20140043486
Application ID: 14113250
Patent Flag: 0

Claim One:
1. An ultra-weak light two-dimensional imaging method, wherein the ultra-weak light two-dimensional imaging method realizes high-resolution optical modulation by adopting the CS theory and the DLP technology and using a linear array single-photon detector as a detection element, said method comprising the following steps: 1) compressive sampling the compressive sampling is realized together by a DMD control system, a first lens and a second lens, for converting two-dimensional image data into a one-dimensional data sequence so as to complete compressive sampling of signals to be measured, wherein: the stray light in the ultra-weak light is filtered by a light filter, after which the ultra-weak light is imaged at the DMD control system through the first lens, and the DMD control system controls the probability that the photons are reflected to the second lens and the second lens controls the focusing of the photons; after the modulated and convergent ultra-weak light is split by a spectrophotometer, the ultra-weak light with different wavelengths is imaged by a linear array single-photon detector; and 2) sparse reconstruction the sparse reconstruction is completed by the combination of a central processing unit and the linear array single-photon detector, and a photon density image is reconstructed by adopting an optimization algorithm applied to a measurement matrix on the DMD control system, thereby solving out a two-dimensional image.