Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Robert A. Close"'
Publikováno v:
Medical Physics. 29:311-318
Multiframe quantitative coronary angiography is typically performed by averaging measurements of artery diameter over multiple frames. This approach reduces errors attributable to random noise but may not reduce systematic errors caused by background
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cacd472b2fe89452ee43a0808e2f4d2
https://doi.org/10.1118/1.1449494
https://doi.org/10.1118/1.1449494
Publikováno v:
Computer Aided Surgery. 7:84-89
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aad36904674265cd0727cbda079d3341
https://doi.org/10.3109/10929080209146019
https://doi.org/10.3109/10929080209146019
Publikováno v:
IEEE Transactions on Medical Imaging. 20:990-998
Layer decomposition is a promising method for obtaining accurate densitometric profiles of diseased coronary artery segments. This method decomposes coronary angiographic image sequences into moving densitometric layers undergoing translation, rotati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcc9ad12fccb035a860f8bf12fcbeb44
https://doi.org/10.1109/42.959296
https://doi.org/10.1109/42.959296
Publikováno v:
The Journal of the Institute of Image Information and Television Engineers. 53:449-457
In the conventional gradient method of optical flow the movement of an object is estimated by a bottom-up algorithm starting from local processing. However, the method cannot be applied to the large displacement of the object. Many methods have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8126816834809da1146d38532e13cab5
https://doi.org/10.3169/itej.53.449
https://doi.org/10.3169/itej.53.449
Publikováno v:
Medical Physics. 23:133-139
A novel method is presented for correcting errors in measurements of biplane projection imaging geometry without prior identification of corresponding points in the two images. For imaged objects that project onto both images, a constraint equation i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::969ff31f17a6d58c4f5c99a77f8cff50
https://doi.org/10.1118/1.597789
https://doi.org/10.1118/1.597789
Publikováno v:
IIH-MSP
One of the representative methods of optical flow is a gradient method which estimates the movement of an object based on the differential of image brightness. However, the method is ineffective for large displacement of the object and many improved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f065ba3a38a6119d8ac1aad732fe695
https://doi.org/10.1109/iih-msp.2009.241
https://doi.org/10.1109/iih-msp.2009.241
Publikováno v:
International Journal for Parasitology. 21:479-482
The geographic distributions of alleles at 11 gene loci in Heterodoxus octoseriatus were examined and found not to be random. Rather, there were at least two geographic patterns, one of which mirrored approximately the geographic ranges of the hosts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e91618d09122005f4c0e57d3cb24758b
https://doi.org/10.1016/0020-7519(91)90108-j
https://doi.org/10.1016/0020-7519(91)90108-j
Publikováno v:
Medical Imaging: Image-Guided Procedures
Display stabilization is a technique by which a feature of interest in a cine image sequence is tracked and then shifted to remain approximately stationary on the display device. Prior simulations indicate that display stabilization with high playbac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::015735a5e2eb65c60e7254e772fe5261
https://doi.org/10.1117/12.535854
https://doi.org/10.1117/12.535854
Publikováno v:
SPIE Proceedings.
Fluoroscopic images are degraded by scattering of x-rays from within the patient and by veiling glare in the image intensifier. Both of these degradations are well described by a response function applied to primary intensity. We can automatically es
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dad74c9904c32787f50df5c41861bcf2
https://doi.org/10.1117/12.465576
https://doi.org/10.1117/12.465576
Publikováno v:
Medical Imaging: Image Processing
Layer decomposition is a promising technique for background removal and noise reduction in coronary angiograms. Our layer decomposition algorithm decomposes a projection image sequence into multiple 2D layers undergoing translation, rotation, and sca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e07826d79ca494b2fc814a405adb50b
https://doi.org/10.1117/12.431150
https://doi.org/10.1117/12.431150