Correction of lens-distortion for real-time image processing systems
Alex G. J. Nijmeijer, Mark A. Boer, Cornelis Herman Slump, Mamatha Samson, Mark Bentum, Geert-Jan Laanstra, Henk Snijders, Jaap Smit, Otto E. Herrmann · 2002
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.>