Title :
Correction of lens-distortion for real-time image processing systems
Author :
Nijmeijer, A.G.J. ; Boer, M.A. ; Slump, C.H. ; Samson, M.M. ; Bentum, M.J. ; Laanstra, G.J. ; Snijders, H. ; Smit, J. ; Herrmann, O.E.
Author_Institution :
Dept. of Electr. Eng., Twente Univ., Enschede, Netherlands
Abstract :
The authors present the design of a real-time imaging system, incorporating the correction of lens-distorted images. It may be used in medical applications (e.g. real-time X-ray image intensifiers), industrial robot vision products or consumer electronics. The system contains two different VLSI-circuits: a transformer and an interpolator. The transformer calculates an address that points to a pixel in the input image. Since this address hardly ever is an exact pixel position, a cube-spline interpolator is used to calculate the pixel-intensity at the desired position
Keywords :
CCD image sensors; CMOS digital integrated circuits; VLSI; aberrations; application specific integrated circuits; image processing equipment; interpolation; optical noise; splines (mathematics); ASIC; CMOS; VLSI-circuits; consumer electronics; correction; cube-spline interpolator; industrial robot vision products; lens-distorted images; pixel-intensity; real-time X-ray image intensifiers; real-time image processing systems; third-order transformation polynomials; Biomedical equipment; Electrical equipment industry; Electronics industry; Image intensifiers; Image processing; Medical services; Optical design; Optical imaging; Real time systems; X-ray imaging;
Conference_Titel :
VLSI Signal Processing, VI, 1993., [Workshop on]
Conference_Location :
Veldhoven
Print_ISBN :
0-7803-0996-0
DOI :
10.1109/VLSISP.1993.404474
