polarization imaging principles and integrated polarimeters|animal polarization imaging

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Biologists use polarimeters to investigate behaviors of animals-vis-a-vis polarization-in their natural habitats. In this paper, we first present the basics of polarization sensing and then discuss integrated polarization imaging sensors developed in our laboratory.

Biologists use polarimeters to investigate behaviors of animals—vis-à-vis polarization—in their natural habitats. In this paper, we first present the basics of polarization sensing and then . In this paper, we first present the basics of polarization sensing and then discuss integrated polarization imaging sensors developed in our laboratory.

In this work, we will deal mostly with polymer based dichroic films, and we will show how to pattern a polymer ANDREOU AND KALAYJIAN: POLARIZATION IMAGING: PRINCIPLES . Polarization is a general descriptor of light and contains information about reflecting objects that traditional intensity-based sensors ignore. Difficult computer vision tasks such as .In the medical field, analysis of the rials and recognize objects [25]–[30], and to analyze reflections polarization allows the diagnose of disease in the eyes. The retinae of most insect and certain .Polarization imaging: principles and integrated polarimeters. Andreou, A. G. ; Kalayjian, Z. K. Publication: IEEE Sensors Journal. Pub Date: December 2002.

Customizations can be made by incorporating additional optical elements, polarization modulators, or specialized sensors to suit specific research or industrial needs. .- "Polarization imaging: principles and integrated polarimeters" Fig. 2. (a) When the electric field of incident radiation is parallel to a principle section of a birefringent crystal, like calcite, . This chapter will focus on the principle of polarization imaging and its applications, then discuss the factors that affection polarization imaging and the method to .

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Polarization is a general descriptor of light and contains information about reflecting objects that traditional intensity-based sensors ignore. Difficult computer vision tasks such as image segmentation and object orientation are made tractable with polarization vision techniques. Specularities, occluding contours, and material properties can be readily extracted .Fig. 6. Video images from the integrated 2-D polarization contrast retina using polymer-based focal-plane micropolarizer. In the picture, a black plastic object is illuminated from two angles by two light sources. The center image represents polarization contrast, (I I )=(I + I ); while the left and right images represent respectively I and I : the intensity of light passing through the .

Polarization imaging: principles and integrated polarimeters (PDF) Polarization imaging: principles and integrated polarimeters | Zaven Kalayjian - Academia.edu Academia.edu no longer supports Internet Explorer.

The photograph was taken using the microscope’s built-in linear polarizer oriented parallel to the S-phase region of the two-phase dichroic film. (b) Output from the polarization contrast circuit was measured while a linear polarizer was rotated in front of the polarization retina. - "Polarization imaging: principles and integrated polarimeters" Andreou A G, Kalayjian Z K. Polarization imaging: principles and integrated polarimeters[J]. IEEE Sens J, 2002, 2(6): 566−576. doi: 10.1109/JSEN.2003.807946. . The third part mainly introduces the pseudo color image reconstruction method of the polarization integrated detector imaging and its application to typical targets in complex scenes . DOI: 10.1364/OL.34.003187 Corpus ID: 27350472; Total elimination of sampling errors in polarization imagery obtained with integrated microgrid polarimeters. @article{Tyo2009TotalEO, title={Total elimination of sampling errors in polarization imagery obtained with integrated microgrid polarimeters.}, author={J. Scott Tyo and Charles F. . Polarization imaging: principles and integrated polarimeters. IEEE Sens. J., 2 (2002), pp. 566-576. . [11] M. Kulkarni, V. Gruev. Integrated spectral-polarization imaging sensor with aluminum nanowire polarization filters. Opt. Express, 20 (2012), pp. 22997-23012. View in Scopus . Performance predictions for micro-polarizer array imaging .

polarization imaging techniques

Fig. 2. (a) When the electric field of incident radiation is parallel to a principle section of a birefringent crystal, like calcite, the wave-normal vector and the ray direction are not parallel. Consequently, the ray is displaced as it propagates through the crystal. (b) Unpolarized light entering a birefringent crystal will separate into two completely linearly orthogonally polarized .Contrast enhancement using polarization imaging reveals small scratches on the surface that cannot be detected with conventional imaging. Courtesy of Teledyne Dalsa. Line scan polarization imaging combines the power of ellipsometry with truly lateral resolution. Developed in the 1970s, ellipsometry is a very sensitive optical technique with .The crystal is lapped to a thickness which exactly displaces the orthogonal components a distance equal to one phototransistor width. An aluminum shield is deposited on the surface of the crystal to prevent mixing of ordinary and extraordinary components. - "Polarization imaging: principles and integrated polarimeters"

The polarization imaging sensor has a signal-to-noise ratio of 45 dB and captures intensity, angle and degree of linear polarization in the visible spectrum at 40 frames per second with 300 mW of power consumption. We report an imaging sensor capable of recording the optical properties of partially polarized light by monolithically integrating .Cross-sectional view of a high resolution polymer based focal-plane polarizing filter and CMOS imager. - "Polarization imaging: principles and integrated polarimeters" . principles and integrated polarimeters" Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 219,627,027 papers from all fields of .In a first approach, these parameters can be obtained by 6 measurements of intensity: ⎛ S 0 ⎞ ⎛ I 0 + I 90 ⎞ ⎟ ⎜ ⎟ ⎜ ⎜ S1 ⎟ ⎜ I 0 − I 90 ⎟ ⎜ S ⎟ = ⎜ I − I ⎟ (eq. 1) − 45 ⎟ ⎜ 2 ⎟ ⎜ 45 ⎜S ⎟ ⎜ I − I ⎟ l ⎠ ⎝ 3⎠ ⎝ r 3 where Io, I90, I45, I .

Recent developments for long-wave infrared (LWIR) imaging polarimeters include incorporating a microgrid polarizer array onto the focal plane array. Inherent advantages over other classes of polarimeters include rugged packaging, inherent alignment of the optomechanical system, and temporal synchronization that facilitates instantaneous .Polarization is a general descriptor of light and contains information about reflecting objects that traditional intensity-based sensors ignore. Difficult computer vision tasks such as image segmentation and object orientation are made tractable with polarization vision techniques. Specularities, occluding contours, and material properties can be readily extracted if the .

566 IEEE SENSORS JOURNAL, VOL. 2, NO. 6, DECEMBER 2002 Polarization Imaging: Principles and Integrated Polarimeters Andreas G. Andreou and Zaven Kevork Kalayjian. Abstract—Polarization is a general descriptor of light and con- of Huygens, Young, Fresnel, and Maxwell to lead us to the tains information about reflecting objects that traditional inten- .

Polarization, a core attribute of light waves, offers insights into light’s physical properties and its interactions with materials [1,2].This unique aspect of polarization paves the way for its application across a broad range .Compound eyes found in insects, besides performing their function in forming images and motion detection are also sensitive to other properties of light, i.e. the wavelengths or vector of skylight polarization. Polarization provides additional visual information than. Polarization imaging has found uses in various disciplines and applications such as object inspection to detect stress, scratch recognition, shape detection for transparent objects. . In such cameras, a micro-polarizer array with four polarization measurements is integrated into the pixels of the focal plane array sensor, similar to the way .

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Polarization imaging: principles and integrated polarimeters. AG Andreou, ZK Kalayjian. IEEE Sensors journal 2 (6 . AG Andreou, KA Boahen. Analog Integrated Circuits and Signal Processing 9, 141-166, 1996. 249: 1996: Probabilistic synaptic weighting in a reconfigurable network of VLSI integrate-and-fire neurons . Polarization camera sensors . Based on the comparison results, the full frame bicubic spline interpolation achieves the best performance for polarization images. This paper presents different imaging interpolation methods implemented for the division of focal plane polarization imaging sensor. The targeted polarization imaging sensor is a CCD based sensor with 1-Mega pixels .Fig. 3. Wire-grid dichroic polarizer. A grid of conductive wires absorbs one e-vector component of incident radiation. Figure was adapted from [44]. - "Polarization imaging: principles and integrated polarimeters" Existing Division-of-Focal-Plane (DoFP) polarization sensors are capable of detecting intensity and polarization information but ignore spectral information. We present a novel integrated DoFP polarimeter that can simultaneously perceive spectral, polarization and intensity information with high spatial resolution at every frame. The sensor was realized by .

The state of polarization (SOP), as a key property of electromagnetic beams, plays an indispensable role in optical communications, imaging systems, biopsy and material characterization [1], [2], [3].As a degree of freedom in optical communications, the polarization can not only double the communication capacity but also improve the spectral efficiency of the . Polarization detection could provide multi-dimensional information by obtaining polarization information in different directions at each pixel [] and has been widely used in infrared imaging and remote sensing, medical imaging, etc. [2,3,4,5,6,7,8,9,10].Perhaps the widest way to highly select the polarization state of electromagnetic waves is to use the metal . The worldwide scholars have designed aperture-divided polarimeters working in visible . Z.K. Kalayjian, “Polarization imaging: principles and integrated polarimeters,” Sensors . He, Y.Q. Ji, J.K. Zhou, Z.C. Zhao, W.M Shen, “Optical Design of Decentered Aperture-Divided Polarization Imaging System,” ACTA OPTICA SINICA, vol . It enables high-speed polarization imaging with multiple adjacent pixels to form a superpixel. However, a device like the Sony color polarization (complementary metal-oxide-semiconductor (CMOS .

polarization imaging experiments