Sub-Nyquist computational ghost imaging with orthonormal spectrum-encoded speckle patterns
Sub-Nyquist computational ghost imaging with orthonormal spectrum-encoded speckle patterns
Computational ghost imaging generally requires a large number of patterns to obtain a high-quality result. It has been shown that both premodulated orthogonal patterns and postprocessing orthonormalization improve imaging quality and reduce the required pattern number. In this work, we propose and experimentally demonstrate a sub-Nyquist computational ghost imaging technique …