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Signal, Image and Video Processing

, Volume 8, Issue 1, pp 149–157 | Cite as

Impact of applying pre-processing techniques for improving classification accuracy

  • T. Sree SharmilaEmail author
  • K. Ramar
  • T. Sree Renga Raja
Original Paper

Abstract

Image denoising is a procedure aimed at removing noise from images while retaining as many important signal features as possible. Many images suffer from poor contrast due to inadequate illumination or finite sensitivity of the imaging device, electronic sensor noise or atmospheric disturbances. This paper proposes a hybrid directional lifting technique for image denoising to retain the original information present in the images. The primary objective of this paper is to show the impact of applying preprocessing techniques for improving classification accuracy. In order to classify the image accurately, effective preservation of edges and contour details of an image is essential. The discrete wavelet transform-based interpolation technique is developed for resolution enhancement. The image is then classified using support vector machine classifier, which is well suitable for image classification. The efficiency of the classifier is analyzed based on receiver operating characteristic (ROC) curves. The quantitative performance measures peak signal to noise ratio and ROC analysis show the significance of the proposed techniques.

Keywords

Accuracy Classification Denoising Enhancement PSNR ROC 

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Copyright information

© Springer-Verlag London 2013

Authors and Affiliations

  • T. Sree Sharmila
    • 1
    Email author
  • K. Ramar
    • 2
  • T. Sree Renga Raja
    • 3
  1. 1.Department of Information TechnologySSN College of EngineeringChennaiIndia
  2. 2.Department of Computer Science and EngineeringEinstein College of EngineeringTirunelveliIndia
  3. 3.Department of Electrical and Electronics EngineeringAnna UniversityTrichyIndia

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