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A New Method of Interpolation and Smooth Curve Fitting Based on Local Procedures
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Volume 17 ,  Issue 4  (October 1970) table of contents
Pages: 589 - 602  
Year of Publication: 1970
ISSN:0004-5411
Author
Hiroshi Akima  ESSA Research Laboratories, Institute for Telecommunication Sciences, Boulder, Colorado
Publisher
ACM  New York, NY, USA
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Downloads (6 Weeks): 49,   Downloads (12 Months): 352,   Citation Count: 28
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ABSTRACT

A new mathematical method is developed for interpolation from a given set of data points in a plane and for fitting a smooth curve to the points. This method is devised in such a way that the resultant curve will pass through the given points and will appear smooth and natural. It is based on a piecewise function composed of a set of polynomials, each of degree three, at most, and applicable to successive intervals of the given points. In this method, the slope of the curve is determined at each given point locally, and each polynomial representing a portion of the curve between a pair of given points is determined by the coordinates of and the slopes at the points. Comparison indicates that the curve obtained by this new method is closer to a manually drawn curve than those drawn by other mathematical methods.


REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

 
1
ACKLAND, T .G . On osculatory interpolation, where the given values of the function are at unequal intervals. J. Inst. Actuar. 9 (1915), 369-375.
 
2
AKIMA, H. A method of smooth curve fitting. ESSA Tech. Rep. ERL 101-ITS 73. US Government Printing Office, Washington, D. C., Jan. 1969.
 
3
GREVILLE, T. N .E . Spline functions, interpolation, and numerical quadrature. In Mathematical Methods for Digital Computers, Vol. 2, A. Ralston and H. S. Wilf (Eds.), Wiley, New York, 1967, Ch. 8.
 
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5
KARUP, J. On a new mechanical method of graduation. In Transactions of the Second International Actuarial Congress. C. and E. Layton, London, 1899, pp. 78-109.
 
6
MILNE, W. E. Numerical Calculus. Princeton U. Press, Princeton, N. J., 1949, Ch. III.

CITED BY  28