Biomaterial Database

Removal of image intensifier veiling glare by mathematical deconvolution techniques. 1985

J A Seibert, and O Nalcioglu, and W Roeck

X-ray images acquired with an image intensifier detector system suffer from veiling glare, a low-frequency degradation described by a point spread function (PSF). The PSF has two experimentally determined parameters unique to a given image intensifier. This information is utilized to deconvolve the degradation from digitally acquired images. Results demonstrate a significant increase in contrast ratio of high-contrast objects after deconvolution and image restoration.

UI	MeSH Term	Description	Entries
D008433	Mathematics	The deductive study of shape, quantity, and dependence. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Mathematic
D011856	Radiographic Image Enhancement	Improvement in the quality of an x-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed.	Digital Radiography,Image Enhancement, Radiographic,Radiography, Digital,Enhancement, Radiographic Image,Enhancements, Radiographic Image,Image Enhancements, Radiographic,Radiographic Image Enhancements
D003201	Computers	Programmable electronic devices designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations.	Calculators, Programmable,Computer Hardware,Computers, Digital,Hardware, Computer,Calculator, Programmable,Computer,Computer, Digital,Digital Computer,Digital Computers,Programmable Calculator,Programmable Calculators
D005374	Filtration	A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Filtrations
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D014963	X-Ray Intensifying Screens	Screens which absorb the energy in the x-ray beam that has penetrated the patient and convert this energy into a light pattern which has as nearly as possible the same information as the original x-ray beam. The more light a screen produces for a given input of x-radiation, the less x-ray exposure and thus shorter exposure time are needed to expose the film. In most film-screen systems, the film is sandwiched between two screens in a cassette so that the emulsion on each side is exposed to the light from its contiguous screen.	Film-Screen Systems, X-Ray,Radiographic Intensifying Screens,Screen-Film Systems, X-Ray,X-Ray Film-Screen Systems,Screens, Radiographic Intensifying,Xray Intensifying Screens,Film Screen Systems, X Ray,Film-Screen System, X-Ray,Intensifying Screen, Radiographic,Intensifying Screen, X-Ray,Intensifying Screen, Xray,Intensifying Screens, Radiographic,Intensifying Screens, X-Ray,Intensifying Screens, Xray,Radiographic Intensifying Screen,Screen Film Systems, X Ray,Screen, Radiographic Intensifying,Screen, X-Ray Intensifying,Screen, Xray Intensifying,Screen-Film System, X-Ray,Screens, X-Ray Intensifying,Screens, Xray Intensifying,System, X-Ray Film-Screen,System, X-Ray Screen-Film,Systems, X-Ray Film-Screen,Systems, X-Ray Screen-Film,X Ray Film Screen Systems,X Ray Intensifying Screens,X-Ray Film-Screen System,X-Ray Intensifying Screen,X-Ray Screen-Film System,X-Ray Screen-Film Systems,Xray Intensifying Screen