Listar INIT_Articles por autoría "8301d4d0-357a-4c0b-ab9f-ff170668666d"
-
Low-cost single-pixel 3D imaging by using an LED array
Optical Society of America (2018)We propose a method to perform color imaging with a single photodiode by using light structured illumination generated with a low-cost color LED array. The LED array is used to generate a sequence of color Hadamard ... -
Multi-Physical Parameter Cross-Sectional Imaging of Quantitative Phase and Fluorescence by Integrated Multimodal Microscopy
IEEE (2021-03-11)Integrated multimodal cross-sectional or volumetric imaging techniques give us fruitful information to understand the behavior or status of target objects such as biological samples. Most of the reported systems for ...
-
Online reconstruction-free single-pixel image classification
Elsevier (2019-04)In single-pixel imaging, a series of illumination patterns are projected onto an object and the reflected or transmitted light from the object is integrated by a photodetector (the single-pixel detector). Then, from the ...
-
Phase and amplitude reconstruction in single-pixel transmission microscopy: a comparison of Hadamard, cosine, and noiselet bases
Optical Society of America (2021-08-10)Hadamard, cosine, and noiselet bases are implemented into a digital holographic microscope based on single-pixel imaging with the capability to retrieve images of complex objects. The object is illuminated with coherent ...
-
Phase imaging by spatial wavefront sampling
Optical Society of America (2018)Phase-imaging techniques extract the optical path length information of a scene, whereas wavefront sensors provide the shape of an optical wavefront. Since these two applications have different technical requirements, ...
-
Photon Counting 3-D Object Recognition Using Digital Holography
Institute of Electrical and Electronics Engineers (IEEE) (2013)We present an analysis of the recognition performance of 3-D objects reconstructed from digital holograms recorded under photon counting conditions. The digital holograms are computed by applying four-step phase-shifting ...
-
Real-time acquisition of complex optical fields by binary amplitude modulation
Optical Society of America (2017)We describe, through simulations and experiments, a real-time wavefront acquisition technique using random binary amplitude masks and an iterative phase retrieval algorithm based on the Fresnel propagator. By using a digital ... -
Resolution analysis in computational imaging with patterned illumination and bucket detection
Optical Society of America (2014)In computational imaging by pattern projection, a sequence of microstructured light patterns codified onto a programmable spatial light modulator is used to sample an object. The patterns are used as generalized measurement ...
-
Roadmap on digital holography
Optica Publishing Group (2021-10-12)This Roadmap article on digital holography provides an overview of a vast array of research activities in the field of digital holography. The paper consists of a series of 25 sections from the prominent experts in digital ...
-
Roadmap on optical security: Optical encryption by computational ghost imaging
IOP Publishing (2016)Information security and authentication are important challenges facing society. Recent attacks by hackers on the databases of large commercial and financial companies have demonstrated that more research and development ...
-
Signal-to-noise ratio of single-pixel cameras based on photodiodes
Optical Society of America (2018-03-01)Single-pixel cameras have been successfully used in different imaging applications in the last years. One of the key elements affecting the quality of these cameras is the photodetector. Here, we develop a numerical model ...
-
Single-pixel digital ghost holography
American Physical Society (2012)Since its discovery, the “ghost” diffraction phenomenon has emerged as an unconventional technique for optical imaging with very promising advantages. However, extracting the intensity and phase information of a structured ...
-
Single-pixel digital holography with phase-encoded illumination
Optical Society of America (2017-02-23)We demonstrate imaging of complex amplitude objects through digital holography with phase-structured illumination and bucket detection. The object is sampled with a set of micro-structured phase patterns implemented onto ...
-
Single-pixel imaging of the retina through scattering media
Optical Society of America (2019)Imaging the retina of cataractous patients is useful to detect pathologies before the cataract surgery is performed. However, for conventional ophthalmoscopes, opacifications convert the lens into a scattering medium that ...
-
Single-pixel imaging with Fourier filtering: application to vision through scattering media
Optical Society of America (2019-02-01)We present a novel approach for imaging through scattering media that combines the principles of Fourier spatial filtering and single-pixel imaging. We compare the performance of our single-pixel imaging setup with that ...
-
Single-pixel polarimetric imaging
Optical Society of America (2012)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 ...
-
Single-pixel polarimetric imaging spectrometer by compressive sensing
Springer (2013-12)We present an optical system that performs polarimetric spectral imaging with a detector with no spatial resolution. This fact is possible by applying the theory of compressive sampling to the data acquired by a sensor ...
-
Single-shot color digital holography based on the fractional Talbot effect
Optical Society of America (2011-02-28)We present a method for recording on-axis color digital holograms in a single shot. Our system performs parallel phase-shifting interferometry by using the fractional Talbot effect for every chromatic channel simultaneously. ...
-
Single-shot digital holography
by use of the fractional Talbot effect
Optical Society of America (2009)We present a method for recording in-line single-shot digital holograms based on the fractional Talbot effect. In our system, an image sensor records the interference between the light field scattered by the object and a ...
-
Three-dimensional fluorescence imaging using the transport of intensity equation
SPIE (2019-11-12)We propose a nonscanning three-dimensional (3-D) fluorescence imaging technique using the transport of intensity equation (TIE) and free-space Fresnel propagation. In this imaging technique, a phase distribution corresponding ...
