Results 221 to 230 of about 359,309 (267)
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ACM SIGGRAPH 2006 Sketches on - SIGGRAPH '06, 2006
Figure 1: Left, a patch of a single surface captured by a laser range scanner at about .4mm/sample. Center, we integrate many of these surfaces to create a single high-quality surface on a higher-resolution grid. Right, a photograph of the object. Notice the improved detail on the eye and the nostril, the feather texture on the face (invisible in the ...
Yong Joo Kil, Boris Mederos, Nina Amenta
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Figure 1: Left, a patch of a single surface captured by a laser range scanner at about .4mm/sample. Center, we integrate many of these surfaces to create a single high-quality surface on a higher-resolution grid. Right, a photograph of the object. Notice the improved detail on the eye and the nostril, the feather texture on the face (invisible in the ...
Yong Joo Kil, Boris Mederos, Nina Amenta
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The scanning laser ophthalmoscope
Physics in Medicine and Biology, 1997The imaging of the fundus of the eye poses two major technical challenges. First, it is necessary for both the illuminating and reflected beams to pass through the same aperture, the iris. In some commonly used instruments this leads to the use of levels of illumination close to the maximum tolerable by a patient.
P F, Sharp, A, Manivannan
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Scanning laser polarimetry – a review
Clinical & Experimental Ophthalmology, 2009AbstractGlaucoma is a leading cause of irreversible blindness worldwide. Retinal ganglion cells and their axons represent the selective target of the disease. When visual function is still intact on standard automated perimetry and optic disc appearance is suspicious, an early diagnosis may be supported by the identification of a retinal nerve fibre ...
DA POZZO S +2 more
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2007 International Workshop on Robotic and Sensors Environments, 2007
We present an approach to laser range scanning in which quality metrics are used to automatically reduce the number of measurements acquired from a scanner viewpoint. As part of this approach we present improved versions of the orientation, and reflectivity quality metrics, as well as introduce three quality metrics: spot size, re solvability, and ...
MacKinnon, D. +3 more
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We present an approach to laser range scanning in which quality metrics are used to automatically reduce the number of measurements acquired from a scanner viewpoint. As part of this approach we present improved versions of the orientation, and reflectivity quality metrics, as well as introduce three quality metrics: spot size, re solvability, and ...
MacKinnon, D. +3 more
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Current Protocols in Cytometry, 2004
AbstractThere are many tasks to which flow cytometers are unsuited, e.g., measurement of attached cells, repeated measurements of a single cell over time, and localization of probes in or on cells. Devices such as confocal microscopes and microscope‐based imaging systems allow high‐resolution analysis and provide flexibility, but typically have low ...
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AbstractThere are many tasks to which flow cytometers are unsuited, e.g., measurement of attached cells, repeated measurements of a single cell over time, and localization of probes in or on cells. Devices such as confocal microscopes and microscope‐based imaging systems allow high‐resolution analysis and provide flexibility, but typically have low ...
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Coherence control by laser scanning
Applied Optics, 1980Partially coherent illumination provided by scanning an object with a laser beam is studied theoretically and experimentally. Two scanning system schemes are considered to produce different forms of spatial coherence functions. It is demonstrated that effective spatial coherence can be controlled by changing the range and width of the scanning beam.
K, Itoh, Y, Ohtsuka
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Scanning Laser Ophthalmoscope Microperimetry
Seminars in Ophthalmology, 1998In this article, the methodologies and clinical applications of microperimetry performed by scanning laser ophthalmoscope (SLO) are described. This technique provides functional results by direct visualization of the macular area. We present the most interesting data about clinical applications in ocular pathology.
M, Varano, C, Scassa
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Confocal scanning laser ophthalmoscope
Applied Optics, 1987A confocal scanning imager moves an illumination spot over the object and a (virtual) detector synchronously over the image. In the confocal scanning laser ophthalmoscope this is accomplished by reusing the source optics for detection. The common optical elements are all mirrors-either flat or spherical-and the scanners are positioned to compensate ...
R H, Webb, G W, Hughes, F C, Delori
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Applied Optics, 1975
A random-access rapid-scanning laser receiver concept utilizing the acoustooptic effect and suitable for applications from the near uv through the long-wave ir region was designed and demonstrated in the field at a 10.6-microm laser radar. Experimental results demonstrating its utility for image detection, radar, atmospheric optics measurements, and ...
M, King, L, Schlom
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A random-access rapid-scanning laser receiver concept utilizing the acoustooptic effect and suitable for applications from the near uv through the long-wave ir region was designed and demonstrated in the field at a 10.6-microm laser radar. Experimental results demonstrating its utility for image detection, radar, atmospheric optics measurements, and ...
M, King, L, Schlom
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Reflectometry with a scanning laser ophthalmoscope
Applied Optics, 1992We describe noninvasive techniques to optimize reflectometry measurements, particularly retinal densitometry, which measures the photopigment density difference. With these techniques unwanted scattered light is greatly reduced, and the retina is visualized during measurements.
A E, Elsner +3 more
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