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A Hardware Design for Realtime Correction of a Barrel Distortion Using the Nearest Pixels on a Corrected Image
Journal of The Korea Society of Computer and Information
Abbr :
JKSCI
2012, 17(12), pp.49-60
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
2012, 17(12), pp.49-60
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
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In this paper, we propose a hardware design for correction of barrel distortion using the nearest coordinates in the corrected image. Because it applies the nearest distance on corrected image rather than adjacent distance on distorted image, the picture quality is improved by the image whole area, solve the staircase phenomenon in the exterior area. But, because of additional arithmetic operation using design of bilinear interpolation, required arithmetic operation is increased. Look up table(LUT) structure is proposed in order to solve this, coordinate rotation digital computer(CORDIC) algorithm is applied. The results of the synthesis using Design compiler, the design of implementing all processes of the interpolation method with the hardware is higher than the previous design about the throughput, In case of the rear camera, the design of using LUT and hardware together can reduce the size than the design of implementing all processes with the hardware
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