Image Retrieval System

1969 Words4 Pages

An image retrieval system is a computer system for browsing, searching and retrieving images from a large database of digital images. A robust natural, geographic and medical image retrieval using a supervised classifier which concentrates on extracted features is proposed. Gray level co-occurrence matrix (GLCM),Scale invariant feature technique(SIFT) and moment invariant features are implemented to extract the features from natural images and GLCM and Gabor feature extraction is done on medical images. Then these features are passed through SVM classifier. SVM classifies whether the input is Geographic or natural or medical image. Based on the SVM result, the retrieval process is done with Euclidean distance. The performance comparison is done with standard features such as colour and texture.
Keywords-Gabor, GLCM, moment invariant, SIFT, SVM.
I. INTRODUCTION
Content-based image retrieval is a technique, which uses visual contents to search images from large scale image databases according to users' interests and it has been an active and fast advancing research area since the 1990s. A necessity for developing a successful CBIR system is the extraction of discriminant features to describe the images in the database. As such, the development of feature extraction algorithms has dominated the literature in the field, where the ultimate goal is to retrieve visually similar images.
In this paper, retrieval is done for natural and geographic images using SIFT, GLCM and moment invariant techniques .In similar to this, GLCM and Gabor techniques are adopted for medical images. Advantages of using these feature extraction algorithms are better error tolerance with fewer matches, reliability, efficient and best image matching task.
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