Enhancement by image-dependent warping
- 1 January 1999
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Image Processing
- Vol. 8 (8) , 1063-1074
- https://doi.org/10.1109/83.777087
Abstract
All image warping algorithms to date are image-independent, namely, relate only to the geometry of the image plane, ignoring the content of the image. We show that taking the image content into account yields elaborate warping schemes which may be used to enhance, sharpen and scale images. Sharpening the image is achieved by "squashing" the pixels in edge areas, and "stretching" the pixels in flat areas. Since image pixels are only moved, not modified, some drawbacks of classical linear filtering methods are avoided. We also lay the mathematical foundation for the use of an image-dependent warping scheme in traditional warping applications, such as distortion minimization.Keywords
This publication has 21 references indexed in Scilit:
- AN ADAPTIVE RANK FILTER FOR IMAGE ENHANCEMENT DEPENDING ON A MEASURE OF THE LOCAL SPATIAL ORDERInternational Journal of Pattern Recognition and Artificial Intelligence, 1995
- Simple constrained deformations for geometric modeling and interactive designACM Transactions on Graphics, 1994
- Animating images with drawingsPublished by Association for Computing Machinery (ACM) ,1994
- Warping digital images using thin plate splinesPattern Recognition, 1993
- Harmonic models of shape transformations in digital images and patternsCVGIP: Graphical Models and Image Processing, 1992
- Scale-space and edge detection using anisotropic diffusionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1990
- Principal warps: thin-plate splines and the decomposition of deformationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1989
- Skeleton-based image warpingThe Visual Computer, 1989
- A Computational Approach to Edge DetectionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1986
- The Finite Element Method for Elliptic ProblemsJournal of Applied Mechanics, 1978