Results 231 to 240 of about 3,840,697 (280)
Spectral amplitude coding OCDMA using AND subtraction technique
, 2007 Link to publisher's homepage at http://ieeexplore.ieee.orgA new detection scheme, namely AND subtraction technique is proposed and presented in this paper.
M K Abdullah, S A Aljunid
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Subtraction Radiography: Techniques and Limitations
Radiology, 1977Subtraction radiography permits the use of 7-10 times less contrast material than is required without subtraction techniques. The first-order, second-order, and composite mask techniques are described and evaluated. While the second-order technique gives more complete cancellation of common structures, the more commonly used first-order technique was ...
M G, Ort, E C, Gregg, B, Kaufman
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Contact screen image subtraction technique
Applied Optics, 1981Experimental results have clearly demonstrated that the newly proposed optical contact screen pulse-width modulation image subtraction technique can be used for the evaluation both qualitative and quantitative of the subtle differences between two similar images.
D, Zhao, C K, Chiang, H K, Liu
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Incoherent image addition and subtraction: a technique
Applied Optics, 1979A technique of incoherent image addition and subtraction is described. The basic advantage of this technique is its use of white light processing, in which case the unavoidable artifact noise in the coherent optical processor may be removed. Although the incoherent processing technique that we have proposed is effective only in a 1-D operation, it also
F T, Yu, A, Tai
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Image Subtraction Techniques in Immunoscintigraphy
International Journal of Radiation Applications and Instrumentation. Part B. Nuclear Medicine and Biology, 1986This paper is devoted to the application of the Image Subtraction Technique to immunoscintigraphy. It is technical, because, although based on simple principles, this method raises problems which are not always satisfactorily solved. It is divided into three parts.
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Subtraction sialography: An improved and simplified technique
Oral Surgery, Oral Medicine, Oral Pathology, 1971Abstract A new method of subtraction sialography employing a serialographic cassette tunnel film changer is described. This method, which can be used in any x-ray department, offers high-quality radiographs with excellent detail.
J S, Buchignani, P M, Shimkin
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Evaluation of sacroiliitis: contrast-enhanced MRI with subtraction technique
Skeletal Radiology, 2009 The purpose of the study was to investigate the diagnostic value of contrast-enhanced MRI using the subtraction technique in the detection of active sacroiliitis.
Bulent Baran +2 more
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A digital subtraction technique for dental radiography
Oral Surgery, Oral Medicine, Oral Pathology, 1983The relative accessibility and stability of the teeth facilitate generation of geometrically identical radiographs over a period of time. When such radiographs are digitized with the aid of a TV camera coupled to an analog to digital converter and a computer, it is possible to conveniently produce subtraction images of high diagnostic value.
H G, Gröndahl +2 more
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An Efficient Region-Based Background Subtraction Technique
2008 Canadian Conference on Computer and Robot Vision, 2008This paper proposes an efficient region-based background subtraction technique using static camera for motion detection in various monitoring applications. Color histograms, texture information, and successive division of candidate rectangular image regions are utilized to model the background and detect the motion.
Parisa Darvish Zadeh Varcheie +2 more
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Newer Subtraction and Filtration Techniques
Radiologic Clinics of North America, 1985This article attempts to describe and superficially evaluate the present and future application of a number of newer subtraction techniques, including recursive temporal filtration, matched filtration, hybrid subtraction, tomography and tomosynthesis, and parametric imaging and image processing.
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