Method of processing images in order automatically to detect key

Details Method of processing images in order automatically to detect key Method of processing images in order automatically to detect key

1995-07-12

1997-04-01

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Absorption

382132, G01N 2304

Patent

active

056174594

ABSTRACT:
A method of processing images in order automatically to detect key pixels (K.sub.2, K.sub.3, K.sub.4) situated on the contour of an object (LV) in an initial image (I.sub.0), and a device for implementing this method in which there is storage, in the digitized initial image (I.sub.0), of the intensity of the pixels [A.sub.0 (x,y)] and of data of regions of the object (LV), classes (C.sub.1 C.sub.m); selection of pixels of interest (PI), on the contour, inside and outside the object (LV); generation of characteristics (E.sub.1 E.sub.k) for each of the pixels of interest (PI); classification of the pixels of interest (PI) into the classes (C.sub.1 C.sub.m); and selection of the key pixels (K.sub.2, K.sub.3, K.sub.4) from corresponding classes (C.sub.2, C.sub.3, C.sub.4).

REFERENCES:
patent: 4101961 (1978-07-01), Reiber
patent: 5065435 (1991-11-01), Oe
patent: 5457754 (1995-10-01), Han et al.
"Left Ventricular Contour Detection: A Fully Automated Approach", by PNJ van der Zwet et al, Computers in Cardiology, 1992, IEEE Computer Society Press, pp. 359-362. no month.
"An Algorithm for Locating the Aortic Valve and the Apex in Left-Ventricular Angiocardiograms" IEEE Transactions on Biomedical Engineering, Sep., 1974, vol. BME-21, NR. 5, pp. 345-349. Griffith et al.

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