Method for distortion correction of X-ray images, and device for

Details Method for distortion correction of X-ray images, and device for Method for distortion correction of X-ray images, and device for

1996-03-04

1997-09-23

Mancuso, Joseph

Image analysis

Image transformation or preprocessing

Changing the image coordinates

382132, G06K 932

Patent

active

056712979

ABSTRACT:
A distorted input image, produced by an X-ray exposure and composed of pixels defined by their position and their respective input image value, is transformed into a substantially distortion-free output image composed of pixels defined by their position and their output image value. Improvement is achieved in that the transformation utilizes a determination of the position of the corner points of the pixels of the output image (or the input image) as well as the surface area of a polygon defined by the corner points in the input image (output image).

REFERENCES:
patent: 5173948 (1992-12-01), Blackham et al.
patent: 5231673 (1993-07-01), Elenga
patent: 5263074 (1993-11-01), Sakamoto
patent: 5276519 (1994-01-01), Richards et al.
patent: 5319749 (1994-06-01), Haaker et al.
"High Speed Digital Radiographic Pincushion Distortion Correction Using an Array Processor" S. Tehrani et al, IEEE Comp. in Cardiology, Boston Oct. 7-10, 1986 (1987) pp. 615-618.
"Image Transformation Approach to Nonlinear Shape Restoration" Y. Tang et al, IEEE Transactions on Systems, Mand and Cybernetics, Jan./Feb. 1993 p. 155-.
"High-Speed Digital Radiographic Pin Cushion Distortion Correction Using an Array Processor" Computers in Technology, Oct. 7, 1986 pp. 615-618.

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