High Fidelity Single-Pixel Imaging

Single-pixel polarimetric imaging.

We present an optical system that performs Stokes polarimetric imaging with a single-pixel detector. This fact is possible by applying the theory of compressive sampling to the data acquired by a commercial polarimeter without spatial resolution. The measurement process is governed by a spatial light modulator, which sequentially generates a set of preprogrammed light intensity patterns. Experi...

High Fidelity Imaging

Experimental comparison of single-pixel imaging algorithms

Single-pixel imaging (SPI) is a novel technique that captures 2D images using a photodiode, instead of conventional 2D array sensors. SPI has high signal-to-noise ratio, wide spectral range, low cost, and robustness to light scattering. Various algorithms have been proposed for SPI reconstruction, including linear correlation methods, the alternating projection (AP) method, and compressive sens...

3D computational imaging with single-pixel detectors.

Computational imaging enables retrieval of the spatial information of an object with the use of single-pixel detectors. By projecting a series of known random patterns and measuring the backscattered intensity, it is possible to reconstruct a two-dimensional (2D) image. We used several single-pixel detectors in different locations to capture the 3D form of an object. From each detector we deriv...

High fidelity imaging using frequency sweep encoding

Introduction: Recently Frydman et al proposed a novel mechanism for directly forming images in k space using frequency sweep encoding (1, 2). It relies on the quadratic dependence of magnetization phase on position. In combination with EPI-type readout, this method has found applications in single-shot spin-echo imaging of human and rat brains (3, 4). Its sequential excitation of magnetization ...