Contourlet Transform for Texture Representation of Ultrasound Thyroid Images

Texture representation of ultrasound (US) images is currently considered a major issue in medical image analysis. This paper investigates the texture representation of thyroid tissue via features based on the Contourlet Transform (CT) using different types of filter banks. A variety of statistical texture features based on CT coefficients, have been considered through a selection schema. The Sequential Floating Forward Selection (SFFS) algorithm with a k-NN classifier has been applied in order to investigate the most representative set of CT features. For the experimental evaluation a set of normal and nodular ultrasound thyroid textures have been utilized. The maximum classification accuracy was 93%, showing that CT based texture features can be successfully applied for the representation of different types of texture in US thyroid images.

• Type: Conference
• Year: 2010
• Where: 6th IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI 2010)
• Authors: Stamos Katsigiannis, Eystratios G. Keramidas, Dimitris Maroulis
• Keywords: IFIP 2010, Information Technology, Sequential Float Feature, Texture Representation, Thyroid