數(shù)字圖象幾何變換的B樣條算法和硬件實(shí)現(xiàn)
B SPLINE ALGORITHM FOR GEOMETRIC TRANSFORMATION OF DIGITAL IMAGE AND HARDWIRED IMPLEMENTATION
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摘要: 本文提出了一種利用B樣條函數(shù)進(jìn)行數(shù)字圖象幾何變換的算法。在給定一組特殊的規(guī)則控制柵格點(diǎn)的條件下,構(gòu)成B樣條變換式。此變換算法保證給出的控制柵格點(diǎn)的準(zhǔn)確對(duì)應(yīng),可得較高的精度。在小型圖象處理系統(tǒng)中可用一種專用的變換解算裝置來實(shí)現(xiàn)。 本文還提出開窗幾何變換的自動(dòng)實(shí)現(xiàn)。
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關(guān)鍵詞:
Abstract: In this paper, the algorithm of using B spline function for geometric transformation of digital image is presented. Given a group of special regular controlling points, B spline function for transformation is formed. The algorithm guarantees precise correspondence between controlling points, higher precision can be obtained. It can be implemented in a minicomputer digital image processing system with a special hard-wired device.This paper also points out that the geometric window transformation can be implemented automatically. -
楊世仁,計(jì)算機(jī)學(xué)報(bào),3(1980), 54.[2]H. S. Hou and H. C. Andrews, IEEE Trans. on ASSP, ASSP-26(1978), 508.[3]M. T. Munteanu and L. L. Schumaker, J. Approximation Theory, 10(1974), 23.[4]R. T. Gregorg and D. L. Karney, A Collection of Matrices for Testing Computational Algerithms, New York: Wiley, 1969, p. 48.[5]劉其真等,自動(dòng)化學(xué)報(bào),8(1982),279. -
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