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Isophote-Based Interpolation

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Permanent URL	http://hdl.lib.byu.edu/1877/2482
Title	Isophote-Based Interpolation
BYU Creator	Morse, Bryan S. Schwartzwald, Duane
Keywords	interpolation; isophote; constrained smoothing
Description/Abstract	Standard methods for image interpolation are based on smoothly fitting the image intensity surface. Recent edge-directed interpolation methods add limited geometric information (edge maps) to build more accurate and visually appealing interpolations at key contours in the image. This paper presents a method for geometry-based interpolation that smoothly fits the isophote (intensity level curve) contours at all points in the image rather than just at selected contours. By using level set methods for curve evolution, no explicit extraction or representation of these contours is required (unlike earlier edge-directed methods). The method uses existing interpolation techniques as an initial approximation and then iteratively reconstructs the isophotes using constrained smoothing. Results show that the technique produces results that are more visually realistic than standard function-fitting methods.
Source	B. S. Morse and D. Schwartzwald, "Isophote-based interpolation" in IEEE International Conference on Image Processing (ICIP), pp. 227-231, October 1998.;
Publisher	IEEE
Date Original	1998-10
Date Digital	2010-09-21
Language	English eng en
Publication Type	Articles
Type	Text
Format	application/pdf
Owning Institution	Brigham Young University
BYU College	College of Physical and Mathematical Sciences
BYU Department	Computer Science
Copyright Status	(c) 1998 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.;
Copyright Use Information	http://www.lib.byu.edu/generic_copyright.html

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