| In industrial applications of machine vision, the optical distortion is introduced to the imaging of the camera to varying degrees. In the measurement and positioning, the distortion must be corrected. In addition, the realization of distortion correction mostly exists in theory research, and most industrial applications are based on PC Platform, which is slow and poor in real-time. In this paper, a new scheme, a checkerboard calibration method, is proposed to calculate the distortion parameters and to correct them by the polynomial distortion model,meanwhile, we adopt the FPGA platform to design the scheme by using FPGA parallel processing, ping-pong operation and pipeline and so on. From the experimental results, this program speed is 9.5 times faster than software implementation by the experimental data and correction accuracy can reach 1 pixel or less. |
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