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Journal of Medical Imaging

Texture analysis of images using a two-dimensional fast time-frequency transform
Author(s): Chun Hing Cheng; Pyari Mohan Pradhan; Joseph Ross Mitchell
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Paper Abstract

The two-dimensional S-transform (ST-2D) is a time-frequency representation that is widely used in medical image processing but prohibitive in both storage and computation time. The high computation time required for generating local spectrum discourages the use of ST-2D for analyzing textures in medical images. A two-dimensional fast time-frequency transform (FTFT-2D) for computing the local spectrum instantaneously and accurately is proposed. It can also be used to compute the complete redundant discrete ST-2D output, if needed. It reduces the storage requirement by generating a compressed form of the ST-2D. In addition, the memory efficient and adaptive nature of the FTFT-2D make it suitable for user-specific requirements.

Paper Details

Date Published: 21 May 2015
PDF: 10 pages
J. Med. Img. 2(2) 024504 doi: 10.1117/1.JMI.2.2.024504
Published in: Journal of Medical Imaging Volume 2, Issue 2
Show Author Affiliations
Chun Hing Cheng, Mayo Clinic Arizona (United States)
Pyari Mohan Pradhan, Indian Institute of Technology Roorkee (India)
Joseph Ross Mitchell, Mayo Clinic Arizona (United States)

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