Prof. Yitzhak Yitzhaky Profile

Prof. Yitzhak Yitzhaky

Researcher at Ben-Gurion Univ of the Negev

SPIE Involvement:

Conference Chair | Editor | Author

Publications (61)

Proceedings Article | 17 October 2023 Presentation + Paper

Efficient depth localization of objects in a 3D space using computational integral imaging

Michael Kadosh, Anton Fraiman, Eli Peli, Yitzhak Yitzhaky

Proceedings Volume 12742, 1274208 (2023) https://doi.org/10.1117/12.2683627

KEYWORDS: Object detection, Cameras, Integral imaging, 3D image processing, Video, Image segmentation, Imaging arrays, Image restoration, Surveillance

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Proceedings Article | 14 June 2023 Presentation + Paper

Fast and sensitive MMW imaging system with up-conversion readout working in the NIR zone

Arun Ramachandra Kurup, Daniel Rozban, Natan Kopeika, Yitzhak Yitzhaky, Hakan Altan, Amir Abramovich

Proceedings Volume 12535, 125350N (2023) https://doi.org/10.1117/12.2663456

KEYWORDS: Extremely high frequency, Optical filters, CCD cameras, Imaging systems, Cameras, Near infrared, Image filtering, Millimeter wave imaging, Terahertz detection, Terahertz radiation

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Focal plane arrays (FPA) constructed using glow discharge detectors (GDD) as the pixel elements proved to be an inexpensive methodology for generating MMW (millimeter wave)/THz (terahertz) images. In the abnormal glow mode of operation, the weakly ionized plasma (WIP) in GDDs can be more responsive while interacting with the incident MMW/THz radiations. It has explicitly been found that the major influence of MMW/THz radiation on the emitted light spectrum from the GDD is located in the near-infrared (NIR) zone of the electromagnetic spectrum which is around 800 nm– 1000 nm. Also, there is no influence of the MMW/THz on the visual band ranging from 500 nm–600 nm emitted from the GDD. The up-conversion method utilized here refers to the detection of variations in the intensity of emitted light from the GDD due to the incident MMW radiation. A charge-coupled device (CCD) camera is employed here to generate MMW/THz images by capturing the light output from the GDD pixel elements on the FPA located in the image plane. The DC bias voltage emitted light from the GDD is much stronger than the modulated light produced as a result of the incident MMW/THz radiation. The major challenge of this work is to measure this minute variation in the GDD light output caused by the MMW/THz radiation and to distinguish it from the intense DC bias operation light of the GDD. For achieving this, we propose using an optical long-pass filter as a part of the CCD camera component, thus enhancing the performance of the suggested up-conversion method. The addition of the long-pass filter eliminates most of the highly intense visual spectrum from the light output of the GDD, thereby decreasing noise and making the up-conversion imaging more effective. Here, we demonstrated the feasibility of implementing GDD-based FPAs using up-conversion readout for MMW/THz imaging applications in the NIR regime by testing with a single GDD whose detection impact was captured using a CCD camera whose zoom lens was coupled with a long pass optical filter.

Proceedings Article | 28 October 2022 Presentation + Paper

MMW imaging system based on GDD focal plane array with improved technology for detection of concealed objects

Arun Ramachandra Kurup, Daniel Rozban, Lidor Kahana, Natan Kopeika, Yitzhak Yitzhaky, Amir Abramovich

Proceedings Volume 12275, 1227506 (2022) https://doi.org/10.1117/12.2637895

KEYWORDS: Extremely high frequency, Sensors, Staring arrays, Signal detection, Reflectors, Imaging systems, Mirrors, Data acquisition, Millimeter wave imaging, Detection and tracking algorithms

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Proceedings Article | 12 September 2021 Presentation + Paper

Closed-set thermal face recognition via the synthesis approach

Oren Girshkin, Yitzhak Yitzhaky

Proceedings Volume 11869, 118690L (2021) https://doi.org/10.1117/12.2600521

KEYWORDS: Facial recognition systems, Thermography, Databases, Image processing, Visualization, Imaging systems, Intelligence systems, Visible radiation, System identification

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Proceedings Article | 12 September 2021 Presentation

Welcome and Introduction to Conference 11869

Henri Bouma, Robert James Stokes, Yitzhak Yitzhaky, Radhakrishna Prabhu

Proceedings Volume 11869, 1186902 (2021) https://doi.org/10.1117/12.2613735

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Proceedings Article | 20 September 2020 Presentation

Opening Remarks by Conference Chairs

Henri Bouma, Robert Stokes, Radhakrishna Prabhu, Yitzhak Yitzhaky

Proceedings Volume 11542, 1154203 (2020) https://doi.org/10.1117/12.2584113

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Proceedings Article | 20 August 2020 Presentation + Paper

Upconversion of millimeter waves to visible waves: inexpensive focal plane array MMW imaging and ultra-fast MMW wireless communication

Amir Abramovich, Yitzhak Yitzhaky, Natan Kopeika, Lidor Kahana, Daniel Rozban

Proceedings Volume 11499, 114990U (2020) https://doi.org/10.1117/12.2570477

KEYWORDS: Extremely high frequency, Staring arrays, Sensors, Signal detection, Upconversion, Ionization, Ions, Neon, Millimeter wave imaging

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It is well known that one of the major bottlenecks of MMW and Terahertz system technology is the lack of inexpensive but sensitive and fast detectors. One way of overcoming this problem is the use of commercial neon indicator plasma lamps or glow discharge detectors (GDD) as MMW and THz detectors. Prices are on the order of about half a dollar per lamp. In electronic mode of detection, the incident MMW or THz wave electric field gives rise to an increase in free electron energy above that provided by DC bias, and thus increases ionization collision rate with neutral Ne atoms and increases current. NEP on the order of 10^-10 W/sqrt Hz is easily obtainable, with rise time on the order of a microsecond. Noise is characterized by electron temperature. However, recently we have reported an optical means of detection which is manifested as an increase in light intensity emitted by the lamps caused by the incident MMW/THz wave. The detected signal is thus upconverted to the visible, and is measured using optical detectors such as avalanche photodiodes or CCD or CMOS cameras focused on the GDD to measure change in emitted light intensity. This gives rise to measured improvement in NEP by about 2 orders of magnitude and in speed by at least 3 orders of magnitude. The detection stems from increase in free electron recombination rate with positive Ne ions, especially in the cathode region, according to the increase in ionization collisions caused by the MMW/THz electric field. There, positive ions bombard the cathode and cause secondary emission of free electrons. There are thus high concentrations of positive Ne ions and free electrons in the cathode vicinity, giving rise to recombination rate increase and, thus, light intensity increase. The recombination rate increase there derives primarily from the role of positive Ne ions which also govern the secondary electron emission rate from the cathode. Consequently, noise temperature in upconversion derives primarily from the positive ion temperature, which is several orders of magnitude less than that of free electrons because of the much heavier mass of the positive ions, thus reducing NEP. Response speed in electronic detection is limited by parasitic capacitance and inductance deriving from the electrodes. However, in optical detection or upconversion, we do not use detection current in the GDD. The input is the MMW/THz wave. The output is the visible wave deriving from the change in GDD emitted light intensity. Unlike detection current, both waves propagate at the speed of light. Indeed, we report detected modulation frequencies on the order of 3 GHZ for 100 GHz wireless communication. This is limited not by the GDD but rather by external components such as optical detectors and amplifiers. We report also imaging experiment results with GDD focal plane arrays of 16x16 detectors and various techniques for increasing the number of focal plane array detectors. Super resolution techniques permit surpassing the diffraction resolution limit.

Proceedings Article | 7 October 2019 Paper

Action localization and classification in long-distance surveillance

Eli Chen, Oren Haik, Yitzhak Yitzhaky

Proceedings Volume 11166, 111660U (2019) https://doi.org/10.1117/12.2534670

KEYWORDS: Video, Surveillance, Video surveillance, Turbulence, Signal processing, Video processing, Convolutional neural networks, Image classification, Atmospheric particles, Signal detection

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Proceedings Article | 6 September 2019 Presentation + Paper

Restoration of depth-based space-variant blurred images

Yitzhak Yitzhaky, Lior Graham

Proceedings Volume 11137, 111371L (2019) https://doi.org/10.1117/12.2530453

KEYWORDS: Point spread functions, Cameras, Distortion, Image processing, Edge detection, Deconvolution, Image analysis, Image restoration, Electrical engineering, Mathematical modeling

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Proceedings Article | 11 May 2018 Presentation + Paper

Inexpensive and simple MMW imaging using optical detection of light emitted from glow discharge detectors

Daniel Rozban, Avihai Aharon, Amir Abramovich, Yitzhak Yitzhaky, Natan Kopeika

Proceedings Volume 10634, 106340J (2018) https://doi.org/10.1117/12.2304313

KEYWORDS: Extremely high frequency, Sensors, Millimeter wave imaging, Staring arrays, Imaging systems, Cameras, CMOS cameras, Upconversion, CMOS sensors, Plasma

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Proceedings Article | 5 October 2017 Paper

3D noise-resistant segmentation and tracking of unknown and occluded objects using integral imaging

Doron Aloni, Jae-Hyun Jung, Yitzhak Yitzhaky

Proceedings Volume 10441, 104410D (2017) https://doi.org/10.1117/12.2278244

KEYWORDS: 3D image processing, Integral imaging, Image segmentation, 3D image reconstruction, Detection and tracking algorithms, Cameras, Video surveillance

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Proceedings Article | 5 October 2017 Paper

MMW/THz imaging using upconversion to visible, based on glow discharge detector array and CCD camera

Avihai Aharon, Daniel Rozban, Amir Abramovich, Yitzhak Yitzhaky, Natan Kopeika

Proceedings Volume 10441, 1044102 (2017) https://doi.org/10.1117/12.2278067

KEYWORDS: Sensors, Upconversion, CMOS cameras, Terahertz radiation, Signal detection, CCD cameras

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Proceedings Article | 21 October 2016 Paper

Up-conversion of MMW radiation to visual band using glow discharge detector and silicon detector

Avihai Aharon Akram, Daniel Rozban, Amir Abramovich, Yitzhak Yitzhaky, Natan Kopeika

Proceedings Volume 9993, 999309 (2016) https://doi.org/10.1117/12.2242086

KEYWORDS: Extremely high frequency, Sensors, Imaging systems, Visualization, Terahertz radiation, Lamps, Staring arrays, Silicon, Signal detection, Photodetectors

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Proceedings Article | 21 September 2015 Paper

Feature extraction for 3D object detection from integral imaging

Doron Aloni, Yitzhak Yitzhaky

Proceedings Volume 9600, 96000E (2015) https://doi.org/10.1117/12.2187035

KEYWORDS: Edge detection, Integral imaging, 3D image processing, Cameras, Image processing, Feature extraction, Wavelets, Confocal microscopy, Imaging arrays, Image segmentation

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Proceedings Article | 8 June 2015 Paper

Feasibility of Radon projection acquisition for compressive imaging in MMW region based new video rate 16x16 GDD FPA camera

Assaf Levanon, Michael Konstantinovsky, Natan Kopeika, Yitzhak Yitzhaky, A. Stern, Svetlana Turak, Amir Abramovich

Proceedings Volume 9462, 94620K (2015) https://doi.org/10.1117/12.2180367

KEYWORDS: Extremely high frequency, Radon, Sensors, Staring arrays, Mirrors, Cameras, Millimeter wave imaging, Lamps, Imaging systems, Video

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Proceedings Article | 7 October 2014 Paper

Distinguishing suspicious actions in long-distance surveillance

Guy Hebe, Eli Chen, Yitzhak Yitzhaky

Proceedings Volume 9253, 92530M (2014) https://doi.org/10.1117/12.2066682

KEYWORDS: Video, Video surveillance, Turbulence, Surveillance, Feature extraction, Atmospheric particles, Atmospheric optics, Image processing, Berkelium, Aerosols

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Proceedings Article | 7 October 2014 Paper

Detection of hidden objects using a real-time 3-D millimeter-wave imaging system

Daniel Rozban, Avihai Aharon, Assaf Levanon, Amir Abramovich, Yitzhak Yitzhaky, N. Kopeika

Proceedings Volume 9253, 925307 (2014) https://doi.org/10.1117/12.2066983

KEYWORDS: Terahertz radiation, Staring arrays, Mirrors, Imaging systems, Extremely high frequency, Sensors, Radar, Dielectrics, Metals, 3D image processing

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Proceedings Article | 7 October 2014 Paper

Real time three-dimensional space video rate sensors for millimeter waves imaging based very inexpensive plasma LED lamps

Assaf Levanon, Yitzhak Yitzhaky, Natan Kopeika, Daniel Rozban, Amir Abramovich

Proceedings Volume 9252, 925206 (2014) https://doi.org/10.1117/12.2065872

KEYWORDS: Sensors, Staring arrays, Extremely high frequency, Imaging systems, Lamps, Millimeter wave imaging, Plasma, Video, Mirrors, Modulation

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In recent years, much effort has been invested to develop inexpensive but sensitive Millimeter Wave (MMW) detectors that can be used in focal plane arrays (FPAs), in order to implement real time MMW imaging. Real time MMW imaging systems are required for many varied applications in many fields as homeland security, medicine, communications, military products and space technology. It is mainly because this radiation has high penetration and good navigability through dust storm, fog, heavy rain, dielectric materials, biological tissue, and diverse materials. Moreover, the atmospheric attenuation in this range of the spectrum is relatively low and the scattering is also low compared to NIR and VIS. The lack of inexpensive room temperature imaging systems makes it difficult to provide a suitable MMW system for many of the above applications. In last few years we advanced in research and development of sensors using very inexpensive (30-50 cents) Glow Discharge Detector (GDD) plasma indicator lamps as MMW detectors. This paper presents three kinds of GDD sensor based lamp Focal Plane Arrays (FPA). Those three kinds of cameras are different in the number of detectors, scanning operation, and detection method. The 1st and 2nd generations are 8 × 8 pixel array and an 18 × 2 mono-rail scanner array respectively, both of them for direct detection and limited to fixed imaging. The last designed sensor is a multiplexing frame rate of 16x16 GDD FPA. It permits real time video rate imaging of 30 frames/ sec and comprehensive 3D MMW imaging. The principle of detection in this sensor is a frequency modulated continuous wave (FMCW) system while each of the 16 GDD pixel lines is sampled simultaneously. Direct detection is also possible and can be done with a friendly user interface. This FPA sensor is built over 256 commercial GDD lamps with 3 mm diameter International Light, Inc., Peabody, MA model 527 Ne indicator lamps as pixel detectors. All three sensors are fully supported by software Graphical Unit Interface (GUI). They were tested and characterized through different kinds of optical systems for imaging applications, super resolution, and calibration methods. Capability of the 16x16 sensor is to employ a chirp radar like method to produced depth and reflectance information in the image. This enables 3-D MMW imaging in real time with video frame rate. In this work we demonstrate different kinds of optical imaging systems. Those systems have capability of 3-D imaging for short range and longer distances to at least 10-20 meters.

Proceedings Article | 3 October 2014 Paper

Effects of de-blurring on background modeling used for surveillance in long-distance horizontal imaging

Yitzhak Yitzhaky, Adiel Elkabetz

Proceedings Volume 9224, 92241F (2014) https://doi.org/10.1117/12.2062598

KEYWORDS: Turbulence, Video, Atmospheric modeling, Image restoration, Electro optical modeling, Surveillance, Video surveillance, Target detection, Image analysis, Modulation transfer functions

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Proceedings Article | 29 May 2014 Paper

Aerosol MTF revisited

Norman Kopeika, Arkadi Zilberman, Yitzhak Yitzhaky

Proceedings Volume 9071, 907119 (2014) https://doi.org/10.1117/12.2052912

KEYWORDS: Modulation transfer functions, Spatial frequencies, Aerosols, Scattering, Atmospheric particles, Imaging systems, Light scattering, Infrared imaging, Absorption, Humidity

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SPIE Journal Paper | 25 April 2014

Improvements of image fusion methods

Yotam Ben-Shoshan, Yitzhak Yitzhaky

JEI, Vol. 23, Issue 02, 023021, (April 2014) https://doi.org/10.1117/12.10.1117/1.JEI.23.2.023021

KEYWORDS: Image fusion, Image quality, Visualization, Wavelets, Thermography, Image processing, Image visualization, Quality measurement, Superposition, Imaging systems

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Proceedings Article | 4 March 2014 Paper

Real-time 3D millimeter wave imaging based FMCW using GGD focal plane array as detectors

Assaf Levanon, Daniel Rozban, Natan Kopeika, Yitzhak Yitzhaky, Amir Abramovich

Proceedings Volume 9022, 90220R (2014) https://doi.org/10.1117/12.2041205

KEYWORDS: Sensors, Signal detection, Imaging systems, Radar, Staring arrays, Extremely high frequency, Mirrors, Heterodyning, Antennas, Dielectrics

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Proceedings Article | 15 October 2013 Paper

Surveillance in long-distance turbulence-degraded videos

Yitzhak Yitzhaky, Eli Chen, Oren Haik

Proceedings Volume 8897, 889704 (2013) https://doi.org/10.1117/12.2028853

KEYWORDS: Video, Video surveillance, Surveillance, Atmospheric turbulence, Image restoration, Detection and tracking algorithms, Atmospheric sensing, Turbulence, Electro optical modeling, Motion estimation

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Proceedings Article | 26 September 2013 Paper

Enhancement of image fusion methods

Yotam Ben-Shoshan, Yitzhak Yitzhaky

Proceedings Volume 8856, 885604 (2013) https://doi.org/10.1117/12.2023224

KEYWORDS: Image fusion, Image quality, Visualization, Image sensors, Neodymium, Image enhancement, Information visualization, Image resolution, Image processing, Thermography

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Proceedings Article | 26 September 2013 Paper

Analysis of skin moles from optical spectropolarimetric images

Yitzhak Yitzhaky, Lior Graham, Ibrahim Abdulhalim

Proceedings Volume 8856, 88562J (2013) https://doi.org/10.1117/12.2024854

KEYWORDS: Skin, Image segmentation, Polarization, Tissue optics, Skin cancer, Light scattering, Visualization, Image analysis, Diagnostics, Cancer

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SPIE Journal Paper | 24 June 2013

Oversampling advances in millimeter-wave scan imaging using inexpensive neon indicator lamp detectors

Assaf Levanon, Natan Kopeika, Yitzhak Yitzhaky, Amir Abramovich, Daniel Rozban, Hezi Joseph, Avihai Aharon, Alex Belenky, Michael Gefen, Orly Yadid-Pecht

OE, Vol. 52, Issue 06, 063202, (June 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.6.063202

KEYWORDS: Sensors, Lamps, Extremely high frequency, Millimeter wave imaging, Imaging systems, Scanners, Staring arrays, Mirrors, Line scan image sensors, Neon

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SPIE Journal Paper | 20 June 2013 Open Access

Classification of skin moles from optical spectropolarimetric images: a pilot study

Lior Graham, Yitzhak Yitzhaky, Ibrahim Abdulhalim

JBO, Vol. 18, Issue 11, 111403, (June 2013) https://doi.org/10.1117/12.10.1117/1.JBO.18.11.111403

KEYWORDS: Skin, Image segmentation, Tissue optics, Image classification, Polarization, Biomedical optics, Skin cancer, Image analysis, Imaging systems, Optical imaging

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SPIE Journal Paper | 20 June 2012

Classification of moving objects in atmospherically degraded video

Eli Chen, Oren Haik, Yitzhak Yitzhaky

OE, Vol. 51, Issue 10, 101710, (June 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.10.101710

KEYWORDS: Video, Image restoration, Image classification, Feature extraction, Video surveillance, Principal component analysis, Optical engineering, Atmospheric optics, Atmospheric sensing, Image processing

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Proceedings Article | 18 May 2012 Paper

Atmospheric effects on target acquisition

Norman Kopeika, Arkadi Zilberman, Yitzhak Yitzhaky, Ephim Golbraikh

Proceedings Volume 8355, 83550D (2012) https://doi.org/10.1117/12.921151

KEYWORDS: Modulation transfer functions, Atmospheric particles, Infrared imaging, Turbulence, Atmospheric optics, Imaging systems, Atmospheric modeling, Target acquisition, Scattering, Thermography

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Proceedings Article | 9 May 2012 Paper

Sub-wavelength resolution of MMW imaging systems using extremely inexpensive scanning Glow Discharge Detector (GDD) double row camera

N. Kopeika, A. Abramovich, A. Levanon, A. Akram, D. Rozban, Y. Yitzhaky, O. Yadid-Pecht, A. Belenky

Proceedings Volume 8362, 83620G (2012) https://doi.org/10.1117/12.918906

KEYWORDS: Terahertz radiation, Image resolution, Diffraction, Staring arrays, Imaging systems, Sensors, Extremely high frequency, Cameras, Lamps, Millimeter wave imaging

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Proceedings Article | 7 May 2012 Paper

Infrared image denoising by nonlocal means filtering

Barak Dee-Noor, Adrian Stern, Yitzhak Yitzhaky, Natan Kopeika

Proceedings Volume 8399, 83990K (2012) https://doi.org/10.1117/12.919979

KEYWORDS: Infrared imaging, Optical filters, Denoising, Image filtering, Image denoising, Image processing, Infrared radiation, Gaussian filters, Thermography, Wavelets

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Proceedings Article | 28 September 2011 Paper

Classification of small moving objects in atmospherically degraded video

Eli Chen, Oren Haik, Yitzhak Yitzhaky

Proceedings Volume 8185, 81850N (2011) https://doi.org/10.1117/12.899057

KEYWORDS: Video, Image restoration, Video surveillance, Image classification, Feature extraction, Principal component analysis, Image processing, Turbulence, Video processing, Atmospheric sensing

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Proceedings Article | 24 September 2011 Paper

Automatic analysis and quantification of fluorescently labeled synapses in microscope images

Shai Yona, Alex Katsman, Ayelet Orenbuch, Daniel Gitler, Yitzhak Yitzhaky

Proceedings Volume 8135, 81351K (2011) https://doi.org/10.1117/12.893888

KEYWORDS: Image segmentation, Microscopes, Glia, Image analysis, Image processing, Visualization, Data centers, Visibility, Proteins, Image processing algorithms and systems

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Proceedings Article | 8 September 2010 Paper

Performance of visual tasks from contour information

Yitzhak Yitzhaky, Liron Itan

Proceedings Volume 7798, 779825 (2010) https://doi.org/10.1117/12.860027

KEYWORDS: Visualization, Edge detection, Sensors, Error analysis, Object recognition, Head-mounted displays, Image processing, Machine vision, Computer vision technology, Image filtering

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Proceedings Article | 3 September 2009 Paper

Compression of turbulence-affected video signals

Shahar Mahpod, Yitzhak Yitzhaky

Proceedings Volume 7444, 744409 (2009) https://doi.org/10.1117/12.827020

KEYWORDS: Image compression, Video compression, Video, Optical flow, Turbulence, Motion estimation, Digital filtering, Image quality, Image restoration, Image quality standards

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Proceedings Article | 1 September 2009 Paper

Active terahertz imaging with Ne indicator lamp detector arrays

N. Kopeika, A. Abramovich, O. Yadid-Pecht, Y. Yitzhaky

Proceedings Volume 7468, 74680T (2009) https://doi.org/10.1117/12.825569

KEYWORDS: Signal detection, Terahertz radiation, Heterodyning, Staring arrays, Imaging systems, Signal to noise ratio, Sensors, Oscillators, Neon, Lamps

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Proceedings Article | 8 October 2007 Paper

Improvement of automatic acquisition of moving objects in long-distance imaging by blind image restoration

Oren Haik, Yitzhak Yitzhaky

Proceedings Volume 6737, 67370O (2007) https://doi.org/10.1117/12.737775

KEYWORDS: Video, Video surveillance, Image restoration, Modulation transfer functions, Motion detection, Detection and tracking algorithms, Point spread functions, Binary data, Image processing, Thermography

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Proceedings Article | 6 October 2007 Paper

Properties of light reflected from road signs in active imaging for driving safety

Aviran Halstuch, Yitzhak Yitzhaky

Proceedings Volume 6737, 67370H (2007) https://doi.org/10.1117/12.737773

KEYWORDS: Roads, Polarizers, Polarization, Mueller matrices, Sensors, Light, Night vision systems, Light sources, Circular polarizers, Retroreflectors

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Proceedings Article | 24 September 2007 Paper

Blind image quality assessment considering blur, noise, and JPEG compression distortions

Erez Cohen, Yitzhak Yitzhaky

Proceedings Volume 6696, 669629 (2007) https://doi.org/10.1117/12.736048

KEYWORDS: Image quality, Image compression, Spatial frequencies, Error analysis, Quality measurement, Image processing, Image analysis, Point spread functions, Fourier transforms, Visibility

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SPIE Journal Paper | 1 November 2006

Effects of image restoration on acquisition of moving objects from thermal video sequences degraded by the atmosphere

Oren Haik, Yosef Lior, Daniel Nahmani, Yitzhak Yitzhaky

OE, Vol. 45, Issue 11, 117006, (November 2006) https://doi.org/10.1117/12.10.1117/1.2388933

KEYWORDS: Video, Image restoration, Modulation transfer functions, Target acquisition, Atmospheric modeling, Thermography, Atmospheric particles, Optical engineering, Turbulence, Video surveillance

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Proceedings Article | 1 September 2006 Paper

Turbulence strength estimation and super-resolution from an arbitrary set of atmospherically degraded images

Steve Zamek, Yitzhak Yitzhaky

Proceedings Volume 6303, 630303 (2006) https://doi.org/10.1117/12.680407

KEYWORDS: Turbulence, Super resolution, Motion estimation, Atmospheric turbulence, Image analysis, Atmospheric propagation, Cameras, Optical flow, Refractive index, Atmospheric optics

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SPIE Journal Paper | 1 April 2006

Superresolution reconstruction of a video captured by a vibrated time delay and integration camera

Oren Haik, Yitzhak Yitzhaky

JEI, Vol. 15, Issue 02, 023006, (April 2006) https://doi.org/10.1117/12.10.1117/1.2194042

KEYWORDS: Lawrencium, Video, Point spread functions, Cameras, Image processing, Motion estimation, Sensors, Super resolution, Reconstruction algorithms, Thermography

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SPIE Journal Paper | 1 October 2005

Vision-model-based image foveation and motion estimation

Eli Peli, Yitzhak Yitzhaky

OE, Vol. 44, Issue 10, 107004, (October 2005) https://doi.org/10.1117/12.10.1117/1.2084667

KEYWORDS: Image registration, Visual process modeling, Visualization, Motion estimation, Image processing, Image resolution, Visual system, Spatial frequencies, Imaging systems, Systems modeling

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Proceedings Article | 1 August 2005 Paper

Angular-motion OTF model

Iftah Klapp, Yitzhak Yitzhaky

Proceedings Volume 5873, (2005) https://doi.org/10.1117/12.616426

KEYWORDS: Point spread functions, Optical transfer functions, Wavefronts, Motion models, Imaging systems, Modulation transfer functions, Wavefront aberrations, Optical spheres, Geometrical optics, Electro optical modeling

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Proceedings Article | 2 November 2004 Paper

Automatic selection of edge detector parameters based on spatial and statistical measures

Raz Koresh, Yitzhak Yitzhaky

Proceedings Volume 5558, (2004) https://doi.org/10.1117/12.560586

KEYWORDS: Sensors, Edge detection, Probability theory, Detector development, Statistical analysis, Statistical methods, Image processing, Picosecond phenomena, Detection and tracking algorithms, Electro optics

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Proceedings Article | 2 November 2004 Paper

Superresolution reconstruction of a video captured by a translational vibrated staggered TDI camera

Oren Haik, Yitzhak Yitzhaky

Proceedings Volume 5558, (2004) https://doi.org/10.1117/12.560582

KEYWORDS: Lawrencium, Video, Cameras, Point spread functions, Sensors, Motion estimation, Image processing, Image resolution, Super resolution, Thermography

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SPIE Journal Paper | 1 December 2003

Restoration of interlaced images degraded by variable velocity motion

Yitzhak Yitzhaky, Adrian Stern

OE, Vol. 42, Issue 12, (December 2003) https://doi.org/10.1117/12.10.1117/1.1621406

KEYWORDS: Point spread functions, Cameras, Motion estimation, Image restoration, Imaging systems, Distortion, Optical transfer functions, Linear filtering, Optical engineering, Modulation transfer functions

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Proceedings Article | 19 November 2003 Paper

Restoration of images captured by a staggered TDI camera in the presence of mechanical vibrations

Gadi Hochman, Yitzhak Yitzhaky, Norman Kopeika, Yair Lauber, Meira Citroen, Adrian Stern

Proceedings Volume 5203, (2003) https://doi.org/10.1117/12.506715

KEYWORDS: Cameras, Sensors, Point spread functions, Motion estimation, Imaging systems, Image processing, Thermography, Error analysis, Image restoration, Chlorine

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Proceedings Article | 28 December 2000 Paper

Restoration of nonlinear motion-distorted composite frame

Yitzhak Yitzhaky, Adrian Stern, Norman Kopeika

Proceedings Volume 4115, (2000) https://doi.org/10.1117/12.411589

KEYWORDS: Composites, Point spread functions, Image restoration, Motion estimation, Image processing, Video, Optical transfer functions, Imaging systems, Solids, Linear filtering

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SPIE Journal Paper | 1 August 2000

Restoration of an image degraded by vibrations using only a single frame

Yitzhak Yitzhaky, G. Boshusha, Y. Levy, Norman Kopeika

OE, Vol. 39, Issue 08, (August 2000) https://doi.org/10.1117/12.10.1117/1.1305319

KEYWORDS: Image restoration, Point spread functions, Modulation transfer functions, Optical transfer functions, Signal to noise ratio, Image filtering, Phase transfer function, Image processing, Optical engineering, Fourier transforms

Proceedings Article | 18 October 1999 Paper

Vibrated image restoration from a single frame

Yitzhak Yitzhaky, Norman Kopeika

Proceedings Volume 3808, (1999) https://doi.org/10.1117/12.365873

KEYWORDS: Image restoration, Point spread functions, Image filtering, Optical transfer functions, Image processing, Spatial frequencies, Signal to noise ratio, Modulation transfer functions, Stars, Motion models

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Proceedings Article | 26 October 1998 Paper

Role of the atmosphere in target acquisition: models versus experiment

Norman Kopeika, Raviv Melamed, Yitzhak Yitzhaky

Proceedings Volume 3436, (1998) https://doi.org/10.1117/12.328088

KEYWORDS: Atmospheric modeling, Modulation transfer functions, Imaging systems, Spatial frequencies, Atmospheric particles, Target acquisition, Aerosols, Systems modeling, Turbulence, Thermal modeling

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Proceedings Article | 1 October 1998 Paper

Comparison of direct methods for restoration of motion-blurred images

Yitzhak Yitzhaky, Norman Kopeika

Proceedings Volume 3460, (1998) https://doi.org/10.1117/12.323196

KEYWORDS: Point spread functions, Image filtering, Direct methods, Motion models, Signal to noise ratio, Filtering (signal processing), Mathematical modeling, Linear filtering, Fourier transforms, Optical filters

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SPIE Journal Paper | 1 July 1998

Experimental comparison of three target acquisition models

Raviv Melamed, Yitzhak Yitzhaky, Norman Kopeika, Stanley Rotman

OE, Vol. 37, Issue 07, (July 1998) https://doi.org/10.1117/12.10.1117/1.602029

KEYWORDS: Atmospheric modeling, Modulation transfer functions, Spatial frequencies, Imaging systems, Target acquisition, Atmospheric particles, Aerosols, Systems modeling, Thermal modeling, Turbulence

SPIE Journal Paper | 1 November 1997

Restoration of atmospherically blurred images according to weather-predicted atmospheric modulation transfer functions

Yitzhak Yitzhaky, Itai Dror, Norman Kopeika

OE, Vol. 36, Issue 11, (November 1997) https://doi.org/10.1117/12.10.1117/1.601526

KEYWORDS: Modulation transfer functions, Atmospheric particles, Aerosols, Turbulence, Atmospheric modeling, Atmospheric optics, Light scattering, Meteorology, Scattering, Spatial frequencies

Proceedings Article | 30 October 1997 Paper

Restoration of motion blurred images

Yitzhak Yitzhaky, Norman Kopeika

Proceedings Volume 3164, (1997) https://doi.org/10.1117/12.292762

KEYWORDS: Point spread functions, Modulation transfer functions, Image filtering, Optical transfer functions, Phase transfer function, Image processing, Image restoration, Autoregressive models, Signal to noise ratio, Fourier transforms

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Proceedings Article | 22 September 1997 Paper

Evaluation of the PSF from motion-blurred images

Yitzhak Yitzhaky, A. Lantzman, I. Mor, Norman Kopeika

Proceedings Volume 3110, (1997) https://doi.org/10.1117/12.281387

KEYWORDS: Point spread functions, Image processing, Modulation transfer functions, Motion estimation, Image restoration, Autoregressive models, Image analysis, Image filtering, Optical transfer functions, Spatial frequencies

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Proceedings Article | 14 November 1996 Paper

Identification of blur parameters from motion-blurred images

Yitzhak Yitzhaky, Norman Kopeika

Proceedings Volume 2847, (1996) https://doi.org/10.1117/12.258234

KEYWORDS: Point spread functions, Image processing, Cameras, Autoregressive models, Image restoration, Signal to noise ratio, Imaging systems, Motion measurement, Image resolution, Filtering (signal processing)

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Proceedings Article | 14 October 1996 Paper

Restoration of atmospherically blurred images using weather-predicted atmospheric Modulation Transfer Function (MFT)

Yitzhak Yitzhaky, Itai Dror, Norman Kopeika

Proceedings Volume 2828, (1996) https://doi.org/10.1117/12.254187

KEYWORDS: Modulation transfer functions, Aerosols, Atmospheric particles, Turbulence, Atmospheric modeling, Meteorology, Scattering, Light scattering, Image enhancement, Image processing

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Proceedings Article | 22 May 1995 Paper

Identification of the blur extent from motion-blurred images

Yitzhak Yitzhaky, Norman Kopeika

Proceedings Volume 2470, (1995) https://doi.org/10.1117/12.210038

KEYWORDS: Point spread functions, Image processing, Image restoration, Signal to noise ratio, Motion models, Filtering (signal processing), Cameras, Imaging systems, Unmanned aerial vehicles, Image resolution

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Proceedings Article | 5 July 1994 Paper

Restoration of images degraded by mechanical vibrations

Ofer Hadar, Z. Adar, A. Cotter, Yitzhak Yitzhaky, Norman Kopeika

Proceedings Volume 2221, (1994) https://doi.org/10.1117/12.178953

KEYWORDS: Image restoration, Optical transfer functions, Image processing, Image filtering, Electronic filtering, Point spread functions, Filtering (signal processing), Sensors, Cameras, Optical filters

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