Prof. Ing. Adam Herout, Ph.D.

ZEMČÍK Pavel, PŘIBYL Bronislav, HEROUT Adam and SEEMAN Michal. Accelerated Image Resampling for Geometry Correction. Journal of Real-Time Image Processing. 2011, vol. 6, no. 3, pp. 1-9. ISSN 1861-8200. Available from:
Publication language:english
Original title:Accelerated Image Resampling for Geometry Correction
Title (cs):Akcelerované převzorkování obrazu pro korekci geometrického zkreslení
Journal:Journal of Real-Time Image Processing, Vol. 6, No. 3, DE
Image Resampling, Sub-pixel Resampling, Raster Image Processing, Geometry Correction, FPGA, Acceleration, Lens Distortion, FIR Filter, Separable Filter, Bilinear Interpolation
This paper introduces a fast algorithm intended for corrections of image distortions caused by lenses or similar devices in real time. Not only the algorithm itself is introduced, but also the paper focuses on its acceleration with the focus on programmable hardware. The presented algorithm is designed to correct small geometrical distortions, where the displacement of the location is only few pixels. However, the resampling is done with high sub-pixel precision. Description of the geometry of the distortions is done through a square or rectangular mesh, where simple bilinear interpolation within each node is exploited to calculate sub-pixel location of the samples. The paper describes the algorithm, its features, specifics the important for implementation, data formats, implementation in field programmable gate arrays, and summarizes the achieved results.

   author = {Pavel Zem{\v{c}}{\'{i}}k and Bronislav
	P{\v{r}}ibyl and Adam Herout and Michal Seeman},
   title = {Accelerated Image Resampling for Geometry
   pages = {1--9},
   journal = {Journal of Real-Time Image Processing},
   volume = {6},
   number = {3},
   year = {2011},
   ISSN = {1861-8200},
   doi = {10.1007/s11554-011-0213-x},
   language = {english},
   url = {}

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