An efficient image classifier using discrete cosine transform

  • Authors:
  • H. B. Kekre;T. K. Sarode;M. S. Ugale

  • Affiliations:
  • NMIMS University, Mumbai, India;Thadomal Shahani Engineering College, Mumbai, India;Xavier Institute of Engineering, Mumbai, India

  • Venue:
  • Proceedings of the International Conference & Workshop on Emerging Trends in Technology
  • Year:
  • 2011

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Abstract

In recent years, thousands of images are generated everyday, which implies the necessity to classify, organize and access them by easy and faster way. The need for image classification is becoming increasingly important. Classifying the images into semantic categories is a challenging problem. Although this is usually not a very difficult task for humans, it has been proved to be an extremely difficult problem for computer programs. This paper presents the idea of using Discrete Cosine Transform to generate the feature vector for Image Classification. The various sizes of feature vectors are generated such as 8X8, 16X16, 32X32, 64X64 and 128X128. The proposed algorithm is worked over database of 1000 images spread over 10 different classes. The Euclidean distance is used as similarity measure. A threshold value is set to determine to which category the query image belongs to.