Real-time correction of optical distortion with a digital circuit

Ji Du; Hang Liu; Xiurong Guan; Daoyin Yu

doi:10.1117/12.263091

31 December 1996 Real-time correction of optical distortion with a digital circuit

Ji Du, Hang Liu, Xiurong Guan, Daoyin Yu

Proceedings Volume 2866, International Conference on Holography and Optical Information Processing (ICHOIP '96); (1996) https://doi.org/10.1117/12.263091
Event: International Conference on Holography and Optical Information Processing, 1996, Nanjing, China

Abstract

Optical distortion can be corrected by a digital circuit in the process that the images are grabbed or displayed. The correcting process is in fact the transformation from the distorted image plane to the distortionless image plane. A standard calibrating sample plate is used to get the transformation function. To meet the requirement of real time operating, transformation function is presented as a table form. Therefore the correction is just a course of table-lookuping. The digital circuit has been designed to realize the correction process. And the software is working with the hardware to get the transformation table. Some experiment data are proposed in the paper to show the results of the calibration and analyze the correcting errors.

Citation Download Citation

Ji Du, Hang Liu, Xiurong Guan, and Daoyin Yu "Real-time correction of optical distortion with a digital circuit", Proc. SPIE 2866, International Conference on Holography and Optical Information Processing (ICHOIP '96), (31 December 1996); https://doi.org/10.1117/12.263091

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KEYWORDS

Distortion

Digital electronics

Image processing

Calibration

Error analysis

Optical calibration

Visualization

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