Results 201 to 210 of about 1,954,579 (262)
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SYSTEM AND METHOD FOR 3-D IMAGING
The Journal of the Acoustical Society of America, 2011A system and method for recording and depicting ultrasound images of a moving object are disclosed. In a preferred embodiment, ultrasound images are acquired as the field of view of an ultrasound probe is advanced across the tissues of interest during a resting period between periods of relatively large-scale heart cycle motion.
Robert G. Younge, Daniel T. Wallace
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Turning images into 3-D models
IEEE Signal Processing Magazine, 2008In this article developments and performance analysis of image matching for detailed surface reconstruction of heritage objects is discussed. Three dimensional image-based modeling of heritages is a very interesting topic with many possible applications.
Fabio Remondino +3 more
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3-D segmentation of MR images of the head for 3-D display
IEEE Transactions on Medical Imaging, 1990Algorithms for 3-D segmentation and reconstruction of anatomical surfaces from magnetic resonance imaging (MRI) data are presented. The 3-D extension of the Marr-Hildreth operator is described, and it is shown that its zero crossings are related to anatomical surfaces.
M, Bomans +3 more
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A 3-D CA-based edge operator for 3-D images
2004 International Conference on Image Processing, 2004. ICIP '04., 2005The paper presents a new 3D edge detector based on a cellular automata model. A uniform cellular automata rule using a 3D von Neumann neighborhood is proposed for carrying out edge detection on binary and gray-scaled 3D images. The work shows that a cellular automata-based model provides better edge maps for binary and gray-scaled objects when compared
Sartra Wongthanavasu +1 more
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3-D Microscope Imaging By Optical 3-D CT
SPIE Proceedings, 1987The success of X-ray CT (Computed Tomography) in clinical medicine has motivated studies of nondestructive three-dimensional (3-D) observation of samples by light wave propagation through 3-D samples. The optical CT technique has been applied to 3-D measurements of refractive index, air pollutants, flow, plasma density, and birefringence.
S. Minami, O. Nakamura, S. Kawata
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European Journal of Radiology, 2003
Without doubt, the greatest challenge of multidetector-row CT is dealing with 'data explosion'. For our carotid/intracranial CT angiograms, we routinely have 375 images to review (300 mm coverage reconstructed every 0.8 mm); for aortic studies we have 450-500 images ( approximately 600 mm coverage reconstructed every 1.3 mm); and for a study of the ...
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Without doubt, the greatest challenge of multidetector-row CT is dealing with 'data explosion'. For our carotid/intracranial CT angiograms, we routinely have 375 images to review (300 mm coverage reconstructed every 0.8 mm); for aortic studies we have 450-500 images ( approximately 600 mm coverage reconstructed every 1.3 mm); and for a study of the ...
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Automatic registration of 3-D ultrasound images
Ultrasound in Medicine & Biology, 1998One of the most promising applications of 3-D ultrasound (US) lies in the visualisation and volume estimation of internal 3-D structures. Unfortunately, artifacts and speckle make automatic analysis of the 3-D data sets difficult. In this study, we investigated the use of 3-D spatial compounding to improve data quality, and found that precise ...
Robert Rohling +2 more
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Compositing 3-D rendered images
ACM SIGGRAPH Computer Graphics, 1985The complexity of anti-aliased 3-D rendering systems can be controlled by using a tool-building approach like that of the UNIX™ text-processing tools. Such an approach requires a simple picture representation amenable to anti-aliasing that all rendering programs can produce, a compositing algorithm for that representation and a command ...
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Proceedings of a Special Symposium on Maturing Technologies and Emerging Horizons in Biomedical Engineering., 2003
The authors discuss the reconstruction of contiguous, high-resolution CT scan images from patients with complex deformities of the skeleton using computer graphics techniques. The techniques, originally developed to simplify the interpretation and improve the utility of CT scans of the face and skull, have been extended to disorders of the pelvis and ...
M.W. Vannier +4 more
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The authors discuss the reconstruction of contiguous, high-resolution CT scan images from patients with complex deformities of the skeleton using computer graphics techniques. The techniques, originally developed to simplify the interpretation and improve the utility of CT scans of the face and skull, have been extended to disorders of the pelvis and ...
M.W. Vannier +4 more
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Evaluation Of Selected 3-D Imaging And 3-D Image Processing Techniques
SPIE Proceedings, 1985Certain earlier proposed 3-D imaging and 3-D image processing techniques have been evaluated and some improvements are suggested. A method of registering blur-free sectional images of the object for the development of a volumetric 3-D TV is proposed. Also, a method for perception of depth effect from 2-D mono video image is described.
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