Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Wilfred Sewchand"'
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 56:1248-1251
Purpose Marker seed location was analyzed to test the hypothesis that there is no intraseed migration within the prostate, a premise fundamental to the technique of marker seed localization of this organ. Despite increasing interest in the use of imp
Publikováno v:
SPIE Proceedings.
Digital angiography remains valuable in a diagnostic environment where anatomical definition is important. However it is not sufficiently reliable in circumstances where precise geometry is important. The geometric distortion of digital angiography i
Autor:
Tianhu Lei, Wilfred Sewchand
Publikováno v:
SPIE Proceedings.
Since both detection and classification in an unsupervised stochastic model-based segmentation technique require the results from estimation, model parameter estimation becomes a core part of these types of techniques. Based on FNM model, ML likeliho
Autor:
Tianhu Lei, Wilfred Sewchand
Publikováno v:
SPIE Proceedings.
This paper provides a new approach for performance evaluation of unsupervised stochastic model-based image segmentation techniques. Performance evaluation is conducted at three (3) aspects: (1) ability in detection of the number of image regions, (2)
Publikováno v:
SPIE Proceedings.
Publikováno v:
SPIE Proceedings.
Several theorems regarding to Gaussianity, independency, correlation, stationary, ergodicity,autocorrelation function and spectral density function, etc. of the computed image are presentedin this paper. These theorems are focused on one issue -the s
Publikováno v:
Applications of Digital Image Processing XIII.
This paper briefly describes the stochastic image model and the image analysis technique for X-ray CT, and then validates the use of this model and technique to MRI modality. The results of image analysis from the use of X-ray CT and MRI are included
Autor:
Tianhu Lei, Wilfred Sewchand
Publikováno v:
Visual Communications and Image Processing '90: Fifth in a Series.
In the design and implementation of Picture Archiving and Communication Systems (PACS), two types of problems have to be solved. The first is in the aspect of image data formatting and the second is in the image transmission. Radiography, X-ray Compu
Autor:
Wilfred Sewchand, Tianhu Lei
Publikováno v:
Applications of Digital Image Processing XII.
This paper proposes a procedure to investigate whether the statistical independence among the pixel images of a picture affects the statistical image segmentation. The results of investi-gation shows that ignoring this independence will degrade the q
Autor:
Pradip Amin, Robert G. Slawson, Wilfred Sewchand, Omar M. Salazar, Hipolito Poussin-Rosillo, Vinita Patanaphan
Publikováno v:
American Journal of Clinical Oncology. 8:172-177
Systemic half-body irradiation (HBI) has been used extensively for the palliation of cancer pain. It has also been tried as an adjuvant therapy in patients with advanced locoregional tumors with a high propensity to disseminate and as consolidation t