Image zooming with contour stencils

Pascal Getreuer

doi:10.1117/12.805934

2 February 2009 Image zooming with contour stencils

Pascal Getreuer

Proceedings Volume 7246, Computational Imaging VII; 72460P (2009) https://doi.org/10.1117/12.805934
Event: IS&T/SPIE Electronic Imaging, 2009, San Jose, California, United States

Abstract

We introduce "contour stencils" as a simple method for detecting the local orientation of image contours and apply this detection to image zooming. Our approach is motivated by the total variation along curves: small total variation along a candidate curve suggests that this curve is a good approximation to the contours. Furthermore, a relationship is shown between interpolation error and total variation. The contour stencil detection is used to develop two image zooming methods. The first one, "contour stencil interpolation," is simple and computationally efficient, yet competitive in a comparison against existing methods. The second method approaches zooming as an inverse problem, using a graph regularization where the graph is determined by contour stencil detection. Both methods extend naturally to vector-valued data and are demonstrated for grayscale and color images.

Citation Download Citation

Pascal Getreuer "Image zooming with contour stencils", Proc. SPIE 7246, Computational Imaging VII, 72460P (2 February 2009); https://doi.org/10.1117/12.805934

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available