Results 211 to 220 of about 754,307 (267)
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European Radiology, 1997
The image quality of a radiograph is determined by the local contrast, spatial resolution, latitude and the image noise. The goal of digital processing is to improve the visualisation of pathology by optimising these physical parameters. Processing parameters need to be chosen correctly in order to overcome the inverse relationship between contrast and
M, Prokop, C M, Schaefer-Prokop
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The image quality of a radiograph is determined by the local contrast, spatial resolution, latitude and the image noise. The goal of digital processing is to improve the visualisation of pathology by optimising these physical parameters. Processing parameters need to be chosen correctly in order to overcome the inverse relationship between contrast and
M, Prokop, C M, Schaefer-Prokop
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Catheterization and Cardiovascular Interventions, 1999
This tutorial introduces basic digital image processing concepts. An increasing fraction of fluoroscopic images are handled and processed using digital tools. The quality of an image in digital format depends on both the technical details of the digitization process and on the quality of the starting scene. Digital tools yield images that are difficult
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This tutorial introduces basic digital image processing concepts. An increasing fraction of fluoroscopic images are handled and processed using digital tools. The quality of an image in digital format depends on both the technical details of the digitization process and on the quality of the starting scene. Digital tools yield images that are difficult
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Commercial digital image libraries, digital images and digital discontent
International Journal on Digital Libraries, 2004Publications such as consumer magazines rely heavily on image libraries as sources for the images they use in their issues. Traditionally, magazine editorial staff have discussed their image requirements over the telephone with library staff and the library has conducted the search. Many libraries have now developed Web sites and their customers search
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On digital image trustworthiness
Applied Soft Computing, 2016Graphical abstractDisplay Omitted HighlightsThree trustworthiness evaluation models based on information fusion are proposed.Dempster-Shafer evidence theory is used at three information fusion levels.An improved least square method is presented to reduce evidence conflicts.The method can be adapted for digital image forensic with high detection ...
Donghui Hu +6 more
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Applied Optics, 1988
A new technique, digital image velocimetry, is proposed for measurement of instantaneous velocity fields of time dependent flows. A time sequence of single-exposure images of seed particles are captured with a high speed camera, and the sampled images are then digitized on an image processor, enhanced, and superposed to construct a multiple-exposure ...
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A new technique, digital image velocimetry, is proposed for measurement of instantaneous velocity fields of time dependent flows. A time sequence of single-exposure images of seed particles are captured with a high speed camera, and the sampled images are then digitized on an image processor, enhanced, and superposed to construct a multiple-exposure ...
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Proceedings of the 11th annual conference on Computer graphics and interactive techniques, 1984
Most computer graphics pictures have been computed all at once, so that the rendering program takes care of all computations relating to the overlap of objects. There are several applications, however, where elements must be rendered separately, relying on compositing techniques for the anti-aliased accumulation of the full image.
Thomas K. Porter, Tom Duff
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Most computer graphics pictures have been computed all at once, so that the rendering program takes care of all computations relating to the overlap of objects. There are several applications, however, where elements must be rendered separately, relying on compositing techniques for the anti-aliased accumulation of the full image.
Thomas K. Porter, Tom Duff
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Clinics in Laboratory Medicine, 2012
Advances in computing speed and power have made a pure digital work flow for pathology. New technologies such as whole slide imaging (WSI), multispectral image analysis, and algorithmic image searching seem poised to fundamentally change the way in which pathology is practiced.
Seung, Park +2 more
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Advances in computing speed and power have made a pure digital work flow for pathology. New technologies such as whole slide imaging (WSI), multispectral image analysis, and algorithmic image searching seem poised to fundamentally change the way in which pathology is practiced.
Seung, Park +2 more
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Dental Clinics of North America, 2000
Electronic sensors in diagnostic radiology are gradually replacing radiographic film. The advantages of this new technology include a lower radiation dose to the patient, an almost instantaneous availability of images without the need for chemical film processing, and the possibility of image enhancement and computer-aided feature extraction.
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Electronic sensors in diagnostic radiology are gradually replacing radiographic film. The advantages of this new technology include a lower radiation dose to the patient, an almost instantaneous availability of images without the need for chemical film processing, and the possibility of image enhancement and computer-aided feature extraction.
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A watermark for digital images
Proceedings of 3rd IEEE International Conference on Image Processing, 2002The growth of networked multimedia systems has magnified the need for image copyright protection. One approach used to address this problem is to add an invisible structure to an image that can be used to seal or mark it. These structures are known as digital watermarks. We describe two techniques for the invisible marking of images.
Raymond B. Wolfgang, Edward J. Delp
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Australian Dental Journal, 2001
This review of digital imaging and the technical aspects of radiographic equipment manufactured for dentists is designed to provide practical information to assist in the decision making process and purchase of radiographic digital imaging for clinical use.
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This review of digital imaging and the technical aspects of radiographic equipment manufactured for dentists is designed to provide practical information to assist in the decision making process and purchase of radiographic digital imaging for clinical use.
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