Image Resolution Enhancement using DWT and Edge Extraction

Alagappa Institute of Skill Development & Computer Centre,Alagappa University, Karaikudi, India.15 -16 February 2017. IT Skills Show & International Conference on Advancements In Computing Resources (SSICACR-2017)

Format: Volume 5, Issue 1, No 21, 2017

Copyright: All Rights Reserved ©2017

Year of Publication: 2017

Author: M.Sangeetha,Dr.A.Senthilrajan


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Image resolution enhancement is a method to improve the quality of an image and it is a preprocess step for various image processing applications. This paper presents a technique to improve the resolution of the low quality images. In the proposed method Discrete wavelet transform (DWT) is used to decompose the input image in to different subbands. To further capture the high frequency details from the high frequency subbandsHaar wavelet transform is used. Edges are extracted from the sub-images to preserve the edge detail effectively. Then the High frequency subbands are interpolated. Finally inverse Haar and inverse DWT is performed to get high resolution image.


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Discrete wavelet transform (DWT), Edge detection, Haar wavelet transform

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