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The Shepp–Logan phantom is a
The Shepp–Logan phantom is a standard test image
A standard test image is a digital image file used across different institutions to test image processing and image compression algorithms. By using the same standard test images, different labs are able to compare results, both visually and quan ...
created by Larry Shepp
Lawrence Alan Shepp (September 9, 1936 Brooklyn, NY – April 23, 2013, Tucson, AZ) was an American mathematician, specializing in statistics and computational tomography.
Shepp obtained his PhD from Princeton University in 1961 with a dissertat ...
and Benjamin F. Logan for their 1974 paper ''The Fourier Reconstruction of a Head Section''. It serves as the model of a human head in the development and testing of image reconstruction
Iterative reconstruction refers to iterative algorithms used to reconstruct 2D and 3D images in certain imaging techniques.
For example, in computed tomography an image must be reconstructed from projections of an object. Here, iterative reco ...
algorithms.
Definition
The function describing the phantom is defined as the sum of 10 ellipses inside a 2×2 square:References
See also
*Imaging phantom
Imaging phantom, or simply phantom, is a specially designed object that is scanned or imaged in the field of medical imaging to evaluate, analyze, and tune the performance of various imaging devices. A phantom is more readily available and prov ...
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Image processing
1974 works
Test items