Image Feature Extraction and Selection

  • Abdul Amir Abdullah Karim Department of Computers, University of Technology, Baghdad, Iraq
  • Rafal Ali Sameer Department of Computers, College of Science, University of Baghdad, Baghdad, Iraq
Keywords: SIFT, Otsu, Feature selection

Abstract

Features are the description of the image contents which could be corner, blob or edge. Scale-Invariant Feature Transform (SIFT) extraction and description patent algorithm used widely in computer vision, it is fragmented to four main stages. This paper introduces image feature extraction using SIFT and chooses the most descriptive features among them by blurring image using Gaussian function and implementing Otsu segmentation algorithm on image, then applying Scale-Invariant Feature Transform feature extraction algorithm on segmented portions. On the other hand the SIFT feature extraction algorithm preceded by gray image normalization and binary thresholding as another preprocessing step. SIFT is a strong algorithm and gives more accurate results but when system require increasing speed, it is better to select distinctive features and use them in description process. The experimental results show clearly reduction of features extracted using SIFT algorithm on segmented parts and the algorithm of feature extraction from normalized binary image gives better results for feature localization as shown in experimental images.

Published
2018-08-30
How to Cite
Karim, A. A. A., & Sameer, R. A. (2018). Image Feature Extraction and Selection. Iraqi Journal of Science, 59(3B), 1501-1508. Retrieved from https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/417
Section
Computer Science

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