Assessment of Similarity Rates of Liver Images Using Geometric Transformations

Year 2017, Volume: 17 Issue: 1, 3113 - 3119, 27.03.2017

Tuğba Palabaş Tapkın , Onur Osman , Tuncer Ergin Uygar Teomete Özgür Dandin , Nizamettin Aydın

https://izlik.org/JA94DE39KL

Abstract

In this study, similarity rates of the liver images
which are obtained from different peoples are determined using 3D geometric
transformation methods.  The similarity
is evaluated based on the numerical comparisons and visual results. 10 intact
liver images which are drawn by the radiologists are used. Three geometric
transformation methods scaling, rotating, and translating are consecutively
applied to the liver images. All images are used both as atlas and as test
images. The Dice coefficient values are calculated to show the similarity of
each test image to atlas. The scaling, rotating, and translating amounts of the
image are retained for the atlas which the similarity rate is highest. The
liver images of different persons are similar to each other at an average rate
of 67



















0.09 % according to Dice coefficient values which
express the similarity. This study is presented as a step to prepare atlas
database for segmentation of the injured liver.

Keywords

Scaling , rotation , translating , liver segmentation

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