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1. (WO1991008552) A PARALLEL PROCESSING NETWORK THAT CORRECTS FOR LIGHT SCATTERING IN IMAGE SCANNERS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008552 International Application No.: PCT/US1990/006956
Publication Date: 13.06.1991 International Filing Date: 04.12.1990
Chapter 2 Demand Filed: 18.06.1991
IPC:
H04N 1/409 (2006.01) ,G01J 1/44 (2006.01) ,G06T 5/20 (2006.01) ,H04N 1/407 (2006.01) ,H04N 5/253 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
1
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
40
Picture signal circuits
409
Edge or detail enhancement; Noise or error suppression
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1
Photometry, e.g. photographic exposure meter
42
using electric radiation detectors
44
Electric circuits
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
T
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
5
Image enhancement or restoration, e.g. from bit-mapped to bit-mapped creating a similar image
20
by the use of local operators
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
1
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
40
Picture signal circuits
407
Control or modification of tonal gradation or of extreme levels, e.g. background level
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
253
Picture signal generating by scanning motion picture films or slide opaques, e.g. for telecine
Applicants:
E.I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, DE 19898, US
Inventors:
JANSSON, Peter, Allan; US
FRALINGER, John, Henry; US
Agent:
MEDWICK, George, M. ; E.I. du Pont de Nemours and Company Legal/Patent Records Center 1007 Market Street Wilmington, DE 19898, US
Priority Data:
446,49305.12.1989US
Title (EN) A PARALLEL PROCESSING NETWORK THAT CORRECTS FOR LIGHT SCATTERING IN IMAGE SCANNERS
(FR) RESEAU DE TRAITEMENT PARALLELE CORRIGEANT LA DIFFUSION DE LUMIERE DANS DES SCANNERS D'IMAGES
Abstract:
(EN) A signal representative of the total incident flux on each area element (12-i) of a target plane (12) is generated. Each area element corresponds to a portion of the object (10) from which the flux emanates. Each total incident flux signal is corrected to eliminate therefrom the effects of flux incident on the corresponding area element due to scattering (24S1, 24S2, 28S1, 28S2), thereby to generate a signal representative of the flux incident on that area element emanating only from the portion of the object corresponding to that area element. The total incident flux signal is corrected by weighting (m) each total incident flux signal in accordance with a predetermined weighting factor W(x, y), and summing the weighted signal representative of the total flux incident on an area element with a weighted total incident flux signal from each of the other area elements.
(FR) On génère un signal représentatif du flux incident total sur chaque élément de zone (12-i) d'un plan cible (12). Chaque élément de zone correspond à une partie de l'objet (10) à partir de laquelle le flux émane. Chaque signal de flux incident est corrigé afin d'éliminer les effets d'incidence de flux sur l'élément de zone correspondant dû à la diffusion (24S1, 24S2), 28-S1, 28S2), permettant ainsi de générer un signal représentatif de l'incidence de flux sur cet élément de zone émanant seulement de la partie de l'objet correspondant à cet élément. Le signal de flux d'incidence totale est corrigé par pondération (m) de chaque signal de flux d'incidence totale selon un facteur W(x, y) de pondération, et par sommation du signal pondéré représentatif de l'incidence de flux totale sur un élément de zone à un signal de flux d'incidence totale pondéré de chacun des éléments des autres zones.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0504272JP3036836JPH05502532CA2070818