Results 251 to 260 of about 3,840,697 (280)

A Robust Technique for Background Subtraction in Traffic Video

2009
A novel background model based on Marr wavelet kernel and a background subtraction technique based on binary discrete wavelet transforms are introduced. The background model keeps a sample of intensity values for each pixel in the image and uses this sample to estimate the probability density function of the pixel intensity.
Tao Gao 0002, Zheng-guang Liu, Wen-chun Gao, Jun Zhang   +3 more
openaire   +2 more sources

Digital Subtraction Angiography: Technology, Equipment, and Techniques

Radiologic Clinics of North America, 1985
The equipment used in digital subtraction angiography is a combination of x-ray equipment and high-speed image-processing equipment. In this article, the components of a DSA system are described, including the x-ray generator, x-ray tube, image intensifier, television system, analog-to-digital (A-D) convertor, image processor, and image acquisition ...
T W, Ovitt, J D, Newell
openaire   +3 more sources

Pseudomask Technique for Digital Subtraction Angiography (DSA)

1984
In recent years, the field of blood vessel diagnostics has seen increasing importance of a process called “Digital Subtraction Angiography” (DSA) which produces enhanced images of blood vessels [3,4]. It is accomplished by subtracting two digitized X-ray images of the patient, the first one taken before and the second one taken after the injection of a
Pierre A. Devijver, Christian Ronse, P. Haaker, Ernst Klotz, Reiner Koppe, R. Linde   +5 more
openaire   +1 more source

[Digital subtraction technique in dentistry].

Revue belge de medecine dentaire, 2008
By computerized subtracting the grey values of geometrically corresponding pixels in consecutively taken digital X-ray images, it is possible to visualize or measure changes in radiodensity over time. This can be very useful, both in clinical and research applications, for the follow-up of tooth mineralization or bone changes. A major problem, however,
Peter, Bottenberg, Bart, Truyen, Cristina, Boca   +2 more
openaire   +1 more source

Subtractive Hybridization Techniques to Study Cellular Senescence

2007
Molecular and cellular processes related to the senescence syndrome are determined by programs of differential gene expression. Subtractive cDNA hybridization is a powerful approach to identify and isolate differentially expressed genes in various systems.
Michal Bassani, Sternberg, Shimon, Gepstein   +1 more
openaire   +2 more sources

[Dacryocystography in digital subtraction technique].

Aktuelle Radiologie, 1996
The authors emphasize the usefulness of dacryography to approach patients affected by epiphora. Digital dacryocystography had improved the anatomic and functional assessment of lacrimal apparatus. The methodology allowed in all patients an accurate visualization of the lacrimal system and the identification, in twenty cases, of pathological causes of ...
A, Ragozzino, A, Diettrich, F, Fedele, A, Pinto, C, Lombardi, P, Vito   +5 more
openaire   +1 more source

Television Subtraction Techniques in Urography

Journal of Urology, 1966
J H, Deweerd, C B, Holman
openaire   +2 more sources

Subtraction Technique in Renal Angiography

Journal of Urology, 1966
H W, ten Cate, H, Jongmans, B G, Ziedses des Plantes   +2 more
openaire   +2 more sources

Optimizing early cancer diagnosis and detection using a temporal subtraction technique

Technological Forecasting and Social Change, 2021
Shoji Kido, Takatoshi Aoki, Tohru Kamiya   +2 more
exaly  

Subtraction Technique in Encephalography

Investigative Radiology, 1967
GIOVANNI RUGGIERO, MARCELLO MAZZACURATI
openaire   +1 more source