A Vlsi Approach for Distortion Correction in Surveillance Camera Images
نویسندگان
چکیده
An efficient VLSI architecture implementation for barrel distortion correction in surveillance camera images is presented. The distortion correction model is based on least squares estimation method. To reduce the computing complexity, an odd-order polynomial to approximate the back-mapping expansion polynomial is used. By algebraic transformation, the approximated polynomial becomes a monomial form which can be solved by Horner’s algorithm. The proposed VLSI architecture can achieve frequency 218MHz with 1490 logic elements by using 0.18μm technology. Compared with previous techniques, the circuit reduces the hardware cost and the requirement of memory usage.
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