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Machine translation
1. (WO1981001952) METHOD OF AND DEVICE FOR CODING AND DECODING AN IMAGE OF AN OBJECT BY MEANS OF PENETRATING RADIATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001952    International Application No.:    PCT/NL1980/000001
Publication Date: 23.07.1981 International Filing Date: 10.01.1980
IPC:
A61B 6/02 (2006.01), G01T 1/29 (2006.01)
Applicants:
Inventors:
Priority Data:
NL80/00001 10.01.1980 WO
Title (EN) METHOD OF AND DEVICE FOR CODING AND DECODING AN IMAGE OF AN OBJECT BY MEANS OF PENETRATING RADIATION
(FR) PROCEDE ET DISPOSITIF DE CODAGE ET DE DECODAGE DE L"IMAGE D"UN OBJET AU MOYEN D"UNE RADIATION PENETRANTE
Abstract: front page image
(EN)A method of and a device for the coding and decoding of an object by means of point-shaped radiation sources. The point sources are subdivided in groups which successively irradiate the object. Two sources distributions can be derived from the groups of radiation sources (a negative radiation intensity is assigned to at least one group), the sum of the autocorrelation functions thereof having the value "0" outside the origin. The coded images generated by means of the various groups are recorded (and also their negatives). Combinations of a coded image and a negative are decoded via point holograms or lens matrices, thus forming a subimage. The sum of all subimages forms an object image which is free of artefacts.
(FR)Procede et dispositif de codage et de decodage d"un objet au moyen de sources de radiation ponctuelles. Les sources ponctuelles sont divisees en groupes qui irradient successivement l"objet. Deux distributions de sources peuvent etre derivees des groupes de sources de radiation (une intensite negative de radiations est attribuee a au moins un groupe), la somme de leurs fonctions d"auto-correlation ayant la valeur "0" a l"exterieur de l"origine. Les images codees generees au moyen des differents groupes sont enregistrees (ainsi que leurs negatifs). Des combinaisons d"une image codee et d"un negatif sont decodees via des hologrammes par point ou des matrices a lentille, formant ainsi une sous-image. La somme de toutes les sous-images forme une image objet exempte d"artefacts.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)