Results 261 to 270 of about 1,136,956 (309)
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Principle of Superposition by Direction Images
IEEE Transactions on Image Processing, 2011This paper discusses the decomposition of the image by direction images, which is based on the concept of the tensor representation and its advanced form, the paired representation. The 2-D image is considered of the size N×N, where N is prime, a power of two, and a power of odd primes.
Artyom M. Grigoryan, Nan Du
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The structure of DNA by direct imaging [PDF]
Science Advances, 2015 The DNA helix and its internal structures were directly imaged; characteristic lengths and inner components were measured and reported.
Mónica Marini +2 more
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A score for directional dominance in images
2017 25th Signal Processing and Communications Applications Conference (SIU), 2017The aim of this study is to develop a score calculation method for expressing directional dominance in the images. It is predicted that this score will give an information of how much improvement in system performance can be achieved when using a directional total variation-based regularization instead of a total variation.
Bilge Süheyla Akkoca Gazioglu +1 more
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Optical imaging with a directional detector
Journal of the Optical Society of America A, 2004We demonstrate a new optical imaging technique based on a directional detector that measures the intensity of light waves that propagate only in a narrow angular window around a specific direction. Light waves that propagate in other directions do not significantly affect the detector output.
Yaron, Rabi +3 more
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Future directions in imaging pouches
Abdominal Radiology, 2023The sections of this special issue on the ileal pouch demonstrate that in the nearly 45 years since the ileal pouch has been utilized to treat patients with colitis and familial adenomatous polyposis, a substantial number of patients experience both short- and long-term morbidity and that imaging plays an important role in their management.
Mark E Baker +7 more
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Imaging the Finger Force Direction
2007 IEEE Conference on Computer Vision and Pattern Recognition, 2007This paper presents a method of imaging the coloration pattern in the fingernail and surrounding skin to infer fingertip force direction during planar contact. Nail images from 7 subjects were registered to reference images with RANSAC and then warped to an atlas with elastic registration.
Yu Sun 0004 +2 more
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The perceived direction of the binocular image
Vision Research, 1979Abstract Despite small disparities between the two retinal images of an object, they may be perceived as a single binocular image. The aim of this study is to determine the direction in which this single binocular image is seen relative to where the monocular images would be seen if seen separately.
J E, Sheedy, G A, Fry
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New Directions in Cardiac Imaging
Annals of Internal Medicine, 1985Cardiac imaging is among the most commonly used diagnostic techniques in cardiovascular medicine. Conventional imaging modes (chest roentgenography, echocardiography, radionuclide imaging, and angiography) allow delineation of cardiac morphology, coronary anatomy, ventricular and valvular function, and cardiac shunts, and permit qualitative evaluation ...
D J, Skorton, S M, Collins
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Image-Directed Tumor Resection
Neurosurgery Clinics of North America, 1990Intra-axial tumors can be localized by intraoperative real-time ultrasound, stereotactic computed tomography (CT), or magnetic resonance imaging (MRI). In the former, intraoperative ultrasound can help a surgeon find a tumor and assess the completeness of resection.
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Directional subband coding of images
International Conference on Acoustics, Speech, and Signal Processing, 2003The authors present a novel subband coding method, directional subband coding of images. In order to match human visual sensitivity, an image is decomposed into a low-frequency component and many high-frequency directional components using a separable quadrature mirror filter and a directional filter.
Haibo Li, Zhenya He
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