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检索条件"主题词=wavefront coding"
157 条 记 录,以下是141-150 订阅
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Evaluating distances using a coded lens camera and a blur metric
Evaluating distances using a coded lens camera and a blur me...
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Conference on Image Processing - Machine Vision Applications IV
作者: Angot, Ludovic J. Chang, Chuan-Chung Chen, Yung-Lin Ind Technol Res Inst ITRI Elect & Optoelect Labs Taipei Taiwan
We propose a method and a system to measure distances to a target and at the same time obtaining an image of the target. The system is based on a wavefront coded lens and an image processing unit. The method requires ... 详细信息
来源: 评论
Noise modeling for design and simulation of computational imaging systems
Noise modeling for design and simulation of computational im...
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Conference on Visual Information Processing XIII
作者: Wach, HB Dowski, ER CDM Opt Inc Boulder CO 80303 USA
Understanding signal and noise quantities in any practical computational imaging system is critical. Knowledge of the imaging environment, optical parameters, and detector sensitivity determine the signal quantities b... 详细信息
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Optimization of phase mask based iris imaging system through the optical characteristics
Optimization of phase mask based iris imaging system through...
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Conference on Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense XII
作者: He Yu-qing Li Jia-qi Pan Jing Li Ying-jiao Beijing Inst Technol Sch Optoelect Minist Educ China Key Lab Photoelect Imaging Technol & Syst Beijing 100081 Peoples R China
Iris recognition is the most reliable method in personal identification. However, the current fixed-focus iris imaging system has small depth of field(DOF), which limits the wide application of the iris recognition sy... 详细信息
来源: 评论
Design and optimization of the cubic-phase pupil for the extension of the depth of field of task-based imaging systems
Design and optimization of the cubic-phase pupil for the ext...
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Conference on Optical Information Systems IV
作者: Bagheri, Saeed Silveira, Paulo E. X. Narayanswamy, Ramkumar de Farias, Daniela Pucci MIT 77 Massachusetts AveRoom 3-355A Cambridge MA 02139 USA CDM Opt Inc Boulder CO 80303 USA
In this article we study the use of the cubic-phase pupil function for extension of the depth of field of task-based imaging systems. In task-based design problems the resolution of interest varies as a function of th... 详细信息
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Femtosecond digital holography based on Spatial Light Modulator
Femtosecond digital holography based on Spatial Light Modula...
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International Conference on Optical Instruments and Technology - Optical Systems and Modern Optoelectronic Instruments
作者: Lu, Xiaowei Li, Jingzhen Chen, Hongyi Shenzhen Univ Coll Elect Sci & Technol Shenzhen Key Lab Micro Nano Photon Informat Techn Shenzhen 518060 Peoples R China
A high-speed digital holography based on a liquid crystal Spatial Light Modulator (LC-SLM) is presented. The production of multi-beam and control of their delay time can be achieved by controllable wavefront coding th... 详细信息
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Restoration of encoded images by a trefoil phase mask using deep learning  25
Restoration of encoded images by a trefoil phase mask using ...
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Conference on Current Developments in Lens Design and Optical Engineering XXV
作者: Reyes-Alfaro, Jose M. Toxqui-Quitl, Carina Espejel-Rivera, Maria A. Gonzalez-Amador, Enrique Padilla-Vivanco, Alfonso Univ Politecn Tulancingo Comp Vis Lab Ingn 100 Tulancingo De Bravo 43629 Hidalgo Mexico
Depth of field (DoF) determines the focused object depth in an optical imaging system. An extended depth of field (EDoF) should provide a larger axial resolution without significantly sacrificing the spatial resolutio... 详细信息
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Deep-focus compound-eye camera with polarization filters for 3D endoscopes
Deep-focus compound-eye camera with polarization filters for...
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Conference on Three-Dimensional and Multidimensional Microscopy - Image Acquisition and Processing XIX
作者: Kagawa, Keiichiro Tanaka, Eiji Yamada, Kenji Kawahito, Shoji Tanida, Jun Shizuoka Univ Naka Ku 3-5-1 Johoku Hamamatsu Shizuoka 4328011 Japan Panasonic Elect Devices Co Ltd Kyoto 6100343 Japan Osaka Univ Suita Osaka 5650871 Japan
A deep-focus three-dimensional endoscope based on a compact compound-eye camera called TOMBO (thin observation module by bound optics) with polarization filters and polarized illuminations is presented. TOMBO is a ver... 详细信息
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Optical implementation of cubic-phase distribution lenses for passive infrared motion sensors
Optical implementation of cubic-phase distribution lenses fo...
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Conference on Thermosense XXVI
作者: Cirino, GA Neto, LG Mansano, RD ElectroPPAr Ind Eletron Ltda BR-17400000 Garca SP Brazil
A cubic-phase distribution is applied in the design and fabrication of inexpensive lenses for passive infrared motion sensors. The resulting lenses produce a point spread function (PSF) capable to distinguish the pres... 详细信息
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Engineering the pupil phase to improve image quality
Engineering the pupil phase to improve image quality
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Conference on Visual Information Processing XII
作者: Prasad, S Torgersen, TC Pauca, VP Plemmons, RJ van der Gracht, J Univ New Mexico Ctr Adv Studies Albuquerque NM 87131 USA
By suitably phase-encoding optical images in the pupil plane and then digitally restoring them, one can greatly improve their quality. The use of a cubic phase mask originated by Dowski and Cathey to enhance the depth... 详细信息
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Potential performance loss and compensation techniques of a lens under ionizing radiations  7
Potential performance loss and compensation techniques of a ...
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Conference on Optical Design and Engineering VII
作者: Muller, C. Lepine, T. Allanche, T. Boukenter, A. Paillet, P. Girard, S. Ouerdane, Y. CEA French Alternat Energies & Atom Commiss DAM DIF F-91297 Arpajon France Univ Lyon Lab Hubert Curien CNRS UMR 5516 18 Rue Benoit Lauras F-42000 St Etienne France Grad Sch Inst Opt 18 Rue Benoit Lauras F-42000 St Etienne France
Our goal is to design a radiation resistant camera lens for color imaging capable to withstand ionizing radiations up to total doses of a few MGy. The latter cause damages in the internal structure of glass which can ... 详细信息
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