About the reduction of reflections for camera lenses How T
... Antireflection coatings and image quality ..................................................................................... 1 The point spread function (PSF) of a lens .................................................................................. 2 Comparison of images - coated vs. uncoated ...
... Antireflection coatings and image quality ..................................................................................... 1 The point spread function (PSF) of a lens .................................................................................. 2 Comparison of images - coated vs. uncoated ...
Plenoptic Rendering With Interactive Performance
... patch that we pick from it. In other words, we use only a square patch of M 2 pixels from each microimage, as opposed to using all pixels in the microimage circle of diameter d. We remark that one way of interpreting this rendering process is that we take regions of size M from each microlens image ...
... patch that we pick from it. In other words, we use only a square patch of M 2 pixels from each microimage, as opposed to using all pixels in the microimage circle of diameter d. We remark that one way of interpreting this rendering process is that we take regions of size M from each microlens image ...
Report Liquid Lens
... them can attest, the images that come out of these camera phones leave plenty to be desired. Part of the problem is their CMOS imaging chips, which typically have a censor array of only about 300 kilo pixels-a quarter or less of the number in a low-end digital camera. But the major problem is their ...
... them can attest, the images that come out of these camera phones leave plenty to be desired. Part of the problem is their CMOS imaging chips, which typically have a censor array of only about 300 kilo pixels-a quarter or less of the number in a low-end digital camera. But the major problem is their ...
Cameras for Stereo Panoramic Imaging - CS
... moving camera different sides of the same image are used to mosaic the two images for the different eyes. This can even be done in real-time [10] (See Fig. 4). ...
... moving camera different sides of the same image are used to mosaic the two images for the different eyes. This can even be done in real-time [10] (See Fig. 4). ...
Panoramic Imaging with Horizontal Stereo - CS
... This paper presents two possibilities for capturing stereo panoramic images using optics, without any moving parts. A special mirror is introduced such that viewing the scene through this mirror creates the same rays as those used with the rotating cameras. Such a mirror enables the capture of stere ...
... This paper presents two possibilities for capturing stereo panoramic images using optics, without any moving parts. A special mirror is introduced such that viewing the scene through this mirror creates the same rays as those used with the rotating cameras. Such a mirror enables the capture of stere ...
A Coaxial Optical Scanner for Synchronous Acquisition of 3D
... Geometric calibration. We used Zhang’s chart-based algorithm [2000] to estimate the intrinsic parameters of each camera: focal length, principal point, and radial and tangential distortion coefficients. The gantry arm angles are then used to estimate the position of each coaxial device to within abo ...
... Geometric calibration. We used Zhang’s chart-based algorithm [2000] to estimate the intrinsic parameters of each camera: focal length, principal point, and radial and tangential distortion coefficients. The gantry arm angles are then used to estimate the position of each coaxial device to within abo ...
Integral holography: white-light single-shot hologram
... pixels and an 8.6×6.9 mm2 active area, has been used. We have concatenated several camera planes due to the relatively low number of pixels in our CCD camera (compared to other cameras on the market today). Note that the use of the available hexagonal-format MLA, rather than a square-format MLA, dec ...
... pixels and an 8.6×6.9 mm2 active area, has been used. We have concatenated several camera planes due to the relatively low number of pixels in our CCD camera (compared to other cameras on the market today). Note that the use of the available hexagonal-format MLA, rather than a square-format MLA, dec ...
Schlieren Visualization
... The first task is to assemble and align the schlieren setup. This may seem tedious and might take some time to attain good alignment and focus, but a well-aligned setup will make all the difference. The instructions here are a summary of Chapter 8 of Settles [1]; the reader is referred there for a m ...
... The first task is to assemble and align the schlieren setup. This may seem tedious and might take some time to attain good alignment and focus, but a well-aligned setup will make all the difference. The instructions here are a summary of Chapter 8 of Settles [1]; the reader is referred there for a m ...
Subpixel Scatter in Digital Micromirror Devices
... Characterizing RITMOS optical properties are essential to building back-end models and making sensor performance predictions. In particular, no information was available on the scattering properties of the DMD when used at a focal plane of an optical system to describe the aggregate light adjacent ...
... Characterizing RITMOS optical properties are essential to building back-end models and making sensor performance predictions. In particular, no information was available on the scattering properties of the DMD when used at a focal plane of an optical system to describe the aggregate light adjacent ...
Quantitative surface normal measurement by a wavefront camera
... between the shifts of the angular spectrum at the image and the object planes. Using Eq. (3), we can estimate the system magnification as 0.226 1∕4.42, which agrees well with the measured value 0.223. Next, to validate this method, we selected a series of spherical concave mirrors (f 50, 100, 2 ...
... between the shifts of the angular spectrum at the image and the object planes. Using Eq. (3), we can estimate the system magnification as 0.226 1∕4.42, which agrees well with the measured value 0.223. Next, to validate this method, we selected a series of spherical concave mirrors (f 50, 100, 2 ...
(19) United States
... FIGS. 2C and 2D respectively shoW reconstructed images acquired via the re?ective and refractive spheres of FIGS. 2A-2B after refocusing according to the method 106. [0031] For the tWo arrays, We respectively use a 12 MP Canon Rebel XSI camera With 300 mm lens, and a 22 MP ...
... FIGS. 2C and 2D respectively shoW reconstructed images acquired via the re?ective and refractive spheres of FIGS. 2A-2B after refocusing according to the method 106. [0031] For the tWo arrays, We respectively use a 12 MP Canon Rebel XSI camera With 300 mm lens, and a 22 MP ...
Spartan Infrared Camera High Resolution Imaging for the SOAR Telescope atmospheric turbulence
... Total heat load of 1000x700x400mm cryogenic box is designed to be 6W. (3L/day of N2) – Currently, we measure 14W. Conduction because of H2? ...
... Total heat load of 1000x700x400mm cryogenic box is designed to be 6W. (3L/day of N2) – Currently, we measure 14W. Conduction because of H2? ...
observing sunspots using a pinhole camera
... You may be wondering, at a time when the bigger the optic, the better the observing (otherwise known as aperture fever) why study the sun using a pinhole. Some years ago (ca. 1990-91) I wanted to know what the limits of observing with the minimum of optics might be, and wondered if sunspots might be ...
... You may be wondering, at a time when the bigger the optic, the better the observing (otherwise known as aperture fever) why study the sun using a pinhole. Some years ago (ca. 1990-91) I wanted to know what the limits of observing with the minimum of optics might be, and wondered if sunspots might be ...
Off-Axis Aperture Camera: 3D Shape Reconstruction
... made of equifocal planes at different depths (Cube data set), a slope (Slope data set), and a wave (Wave data set). For each of these shapes we show the reconstruction results obtained by either changing the diameter A of the aperture (see Figures 2 and 3) or the distance C3 between the aperture and ...
... made of equifocal planes at different depths (Cube data set), a slope (Slope data set), and a wave (Wave data set). For each of these shapes we show the reconstruction results obtained by either changing the diameter A of the aperture (see Figures 2 and 3) or the distance C3 between the aperture and ...
BL-C20A - cs.psn
... or "-" once. phenomenon*). *The hunting phenomenon is when the image lightens, then darkens, then lightens repeatedly, without stabilizing to a constant brightness. The image • The camera transmits a dark scene. contains Make the scene brighter. When the camera transmits a dark interference or scene ...
... or "-" once. phenomenon*). *The hunting phenomenon is when the image lightens, then darkens, then lightens repeatedly, without stabilizing to a constant brightness. The image • The camera transmits a dark scene. contains Make the scene brighter. When the camera transmits a dark interference or scene ...
Active Aperture Control and Sensor Modulation for Flexible Imaging
... density filter in front of the camera to capture high dynamic range image. These two methods must be implemented on a panning camera in order to image every scene point with different exposures. [12] discussed three possible designs to achieve “adaptive” HDR using an SLM, where the SLM is placed adj ...
... density filter in front of the camera to capture high dynamic range image. These two methods must be implemented on a panning camera in order to image every scene point with different exposures. [12] discussed three possible designs to achieve “adaptive” HDR using an SLM, where the SLM is placed adj ...
Baffle Design and Analysis of Stray-light in Multispectral Camera of
... determine compared to the specularly reflecting surfaces. Thus, it can not guarantee more than two bounces from a diffusely reflecting baffle before reaching the first lens of the system [3]. If the baffle has specularly reflecting surfaces, one of the criteria used for the placement of the vanes is ...
... determine compared to the specularly reflecting surfaces. Thus, it can not guarantee more than two bounces from a diffusely reflecting baffle before reaching the first lens of the system [3]. If the baffle has specularly reflecting surfaces, one of the criteria used for the placement of the vanes is ...
Camera obscura Vs Photographic picture:
... I.1. Distinction of Hockney’s thesis Artists and art historians, by the nature of their studies, are exerting that the methods artists use – be it the materials, tools, techniques, insights - have a profound, direct and instant influence on the nature of the work they produce. There is often much di ...
... I.1. Distinction of Hockney’s thesis Artists and art historians, by the nature of their studies, are exerting that the methods artists use – be it the materials, tools, techniques, insights - have a profound, direct and instant influence on the nature of the work they produce. There is often much di ...
lecture8 - Tamara L Berg
... When you turn the lens of a camera to focus it -- you're moving it closer or farther away from the film surface. As you move the lens, you can line up the focused real image of an object so it falls directly on the film surface. ...
... When you turn the lens of a camera to focus it -- you're moving it closer or farther away from the film surface. As you move the lens, you can line up the focused real image of an object so it falls directly on the film surface. ...
Glossary
... Chimping…on cameras which have no electronic preview of the image through the viewfinder (such as most dSLRs), this refers to looking at the image on the LCD afterward, which requires pulling the camera down from the face and looking down at the back of the camera. This looks similar to one primate ...
... Chimping…on cameras which have no electronic preview of the image through the viewfinder (such as most dSLRs), this refers to looking at the image on the LCD afterward, which requires pulling the camera down from the face and looking down at the back of the camera. This looks similar to one primate ...
Sensor Based Forgery detection Forensic Imaging seminar
... noise extracted from images’, International Conference on Imaging for Crime Detection and Prevention, 2009. M. Goljan, M. Chen, and J. Fridrich, ‘Identifying common source digital camera from image pairs’, IEEE International Conference on Image Processing, 2007. Lukáš, Jan, Jessica Fridrich, and Mir ...
... noise extracted from images’, International Conference on Imaging for Crime Detection and Prevention, 2009. M. Goljan, M. Chen, and J. Fridrich, ‘Identifying common source digital camera from image pairs’, IEEE International Conference on Image Processing, 2007. Lukáš, Jan, Jessica Fridrich, and Mir ...
Atom “Pinhole Camera” with Nanometer Resolution
... respectively, which are smaller than those in the preceding case and are explained by smaller diameters of the holes in the mask used in this case. In summary, a new approach has been proposed to construct images in atom optics that is based on a pinhole camera well-known in traditional light optics ...
... respectively, which are smaller than those in the preceding case and are explained by smaller diameters of the holes in the mask used in this case. In summary, a new approach has been proposed to construct images in atom optics that is based on a pinhole camera well-known in traditional light optics ...
PPT
... CCD: transports the charge across the chip and reads it at one corner of the array. An analog-to-digital converter (ADC) then turns each pixel's value into a digital value by measuring the amount of charge at each photosite and converting that measurement to binary form CMOS: uses several transistor ...
... CCD: transports the charge across the chip and reads it at one corner of the array. An analog-to-digital converter (ADC) then turns each pixel's value into a digital value by measuring the amount of charge at each photosite and converting that measurement to binary form CMOS: uses several transistor ...
Camera obscura
A camera obscura (Latin: ""dark chamber"") is an optical device that led to photography and the photographic camera. The device consists of a box or room with a hole in one side. Light from an external scene passes through the hole and strikes a surface inside, where it is reproduced, inverted (thus upside-down), but with color and perspective preserved. The image can be projected onto paper, and can then be traced to produce a highly accurate representation. The largest camera obscura in the world is on Constitution Hill in Aberystwyth, Wales.Using mirrors, as in an 18th-century overhead version, it is possible to project a right-side-up image. Another more portable type is a box with an angled mirror projecting onto tracing paper placed on the glass top, the image being upright as viewed from the back.As the pinhole is made smaller, the image gets sharper, but the projected image becomes dimmer. With too small a pinhole, however, the sharpness worsens, due to diffraction. Most practical camerae obscurae use a lens rather than a pinhole (as in a pinhole camera) because it allows a larger aperture, giving a usable brightness while maintaining focus.