Results 271 to 280 of about 630,838 (311)

Fast imaging with the MMME sequence

Magnetic Resonance Imaging, 2006
The multiple-modulation-multiple-echo sequence, previously used for rapid measurement of diffusion, is extended to a method for single shot imaging. Removing the gradient switching requirement during the application of RF pulses by a constant frequency encoding gradient can shorten experiment time for ultrafast imaging.
Cho, Hyungjoon, Chavez, L, Sigmund, EE, Madio, DP, Song, YQ   +4 more
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Integration of transitory image sequences

Proceedings of IEEE Conference on Computer Vision and Pattern Recognition CVPR-94, 1994
A transitory image sequence is one in which no scene element is visible through the entire sequence. This article deals with some major theoretical and algorithmic issues associated with the task of estimating structure and motion from transitory image sequences. Two representations, world-centered (WC) and camera-centered (CC), behave very differently
John (Juyang) Weng, Yuntao Cui, Narendra Ahuja, Ajit Singh   +3 more
openaire   +1 more source

Superresolution from image sequence

32nd Applied Imagery Pattern Recognition Workshop, 2003. Proceedings., 2004
Due to cost of hardware, size, and fabrication complexity limitations, imaging systems like CCD detector arrays or digital cameras often provide only multiple low-resolution (LR) degraded images. However, a high-resolution (HR) image is indispensable in many applications including health diagnosis and monitoring, military surveillance, and terrain ...
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Model fitting for sequences of images

Computational Statistics & Data Analysis, 2000
The aim of this paper is to introduce methods for estimating mixture probabilities which specify time-activity curves (distributions of activity in time) in sequences of medical images. These parameters are of medical significance as they represent metabolic processes (functioning) occurring within each voxel within an imaged region within the body ...
Hudson, H. Malcolm, Walsh, Craig
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The Image of J in the EHP Sequence

The Annals of Mathematics, 1982
The EHP sequence is based on a result of James [J] who showed that there is H a map H such that S _> Q Sn+- > S2n+1 is a fibration when localized at 2. The map Sn ..> Sn+ is usually labeled E. The boundary homomorphism in the homotopy sequence is usually labeled P.
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Deformable templates in image sequences

Proceedings., 11th IAPR International Conference on Pattern Recognition. Vol.II. Conference B: Pattern Recognition Methodology and Systems, 2003
The Bayesian reconstruction of the shape of an object in image sequences using deformable template techniques is considered. The object shape is represented by a prototype outline which is deformed under constraints of continuity and rigidity. The deformation of the template retains consistent shape characteristics whilst allowing variation and ...
Kanti V. Mardia, T. J. Hainsworth, J. F. Haddon   +2 more
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Radiometric alignment of image sequences

Proceedings of the 2004 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2004. CVPR 2004., 2004
Color values in an image are related to image irradiance by a nonlinear function called radiometric response function. Since this function depends on the aperture and the shutter speed, image intensity of a same object may vary during the acquisition of an image sequence due to auto exposure feature of the camera.
Seon Joo Kim, Marc Pollefeys
openaire   +2 more sources

Morphological Segmentation of Image Sequences

1994
In image compression, object-based approaches are adapted to high compression rates, since they take into account the geometry of the objects and the human eye characteristics. Mathematical Morphology, dealing with geometrical features is a well suited technique for segmentation purposes.
Beatriz Marcotegui, Fernand Meyer
openaire   +1 more source

Nuclear image sequence decomposition

COMPSAC 79. Proceedings. Computer Software and The IEEE Computer Society's Third International Applications Conference, 1979., 2005
This research concerns the problem of dis criminating between various radioactive objects on the basis of their differing dynamics (photon intensity as a function of time) in a sequence of images. Each object is assumed to be homogeneous dynamically, but to differ in intensity from point to point.
Earl E. Cose, William H. Rose, W. Earl Barnes, Ervin Kaplan, James S. Arnold   +4 more
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An image warping approach to image sequence interpolation

Proceedings of 1st International Conference on Image Processing, 2002
Describes a new method for image sequence interpolation. The approach uses a feature-based image warping algorithm to align linear image features in two or more key frames. We propose modifications to this feature-based warping algorithm which reduce artifacts created in the presence of large distortions.
Joseph W. Monaco, Mark J. T. Smith
openaire   +1 more source