BIG - Comparison of interpolators

Biomedical Imaging Group

Imaging Web Demonstrations

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BIG > Demos > Comparison of interpolators

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Comparison of interpolators

Description

Compares the standard interpolations and the interpolations provided by the Biomedical Imaging Group when a rotation is successively applied to an image.

Reference

P. Thévenaz, T. Blu, M. Unser, "Image Interpolation and Resampling," Handbook of Medical Imaging, Processing and Analysis, I.N. Bankman, Ed., Academic Press, San Diego Ca, USA, pp. 393-420, 2000.

Standard methods:

Constant: Nearest-Neighbor
Linear: B-Spline
Quadratic: Dodgson
Cubic: Keys
Cubic: Schaum

BIG methods:

Constant: B-spline
Linear: B-spline
Quadratic: B-spline
Quadratic: Omoms
Cubic: B-spline
Cubic: Omoms
High Quality: B-spline 11

Instruction to use the applet

Choose an input image in the list.
Choose an number of rotations (iterations).
Choose methods of interpolations.
Press ">" to run one step or ">>" to run all the steps. Press "<" to run one step in counter-clockwise and "<<" to run all steps.

Toolbar in the image display

	Get the coordinates and value of a pixel.
	Get the maximum, minimum and the mean value of the image.
	Open a new window containing the image.
	Zoom out by a factor 2. (N/A on Netscape)
	Zoom in by a factor 2. (N/A on Netscape)
	Move the zoomed part of the image. (N/A on Netscape)