2D Satellite Image Registration Using Transform Based and Correlation Based Methods

Abstract

 Image registration is the process of geometrically aligning one image to another image of the same scene taken from different viewpoints or by different sensors. It is a fundamental image processing technique and is very useful in integrating information from different sensors, finding changes in images taken at different times and inferring three-dimensional information from stereo images. Image registration can be done by using two matching method: transform based methods and correlation based methods. When image registration is done using correlation based methods like normalized cross correlation, the results are slow. They are also computationally complex and sensitive to the image intensity changes which are caused by noise and varying illumination. In this paper, an unusual form of image registration is proposed which focuses upon using various transforms for fast and accurate image registration. The data set can be a set of photographs, data from various sensors, from different times, or from different viewpoints. The applications of image registration are in the field of computer vision, medical imaging, military automatic target recognition, and in analyzing images and data from satellites. The proposed technique works on satellite images. It tries to find out area of interest by comparing the unregistered image with source image and finding the part that has highest similarity matching. The paper mainly works on the concept of seeking water or land in the stored image. The proposed technique uses different transforms like Discrete Cosine Transform, Discrete Wavelet Transform, HAAR Transform and Walsh transform to achieve accurate image registration. The paper also focuses upon using normalized cross correlation as an area based technique of image registration for the purpose of comparison. The root mean square error is used as similarity measure. Experimental results show that the proposed algorithm can successfully register the template and can also process local distortion in high-resolution satellite images

Authors and Affiliations

Dr. H. B. Kekre, Dr. Tanuja K. Sarode, Ms. Ruhina B. Karani

Keywords

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  • EP ID EP140411
  • DOI -
  • Views 88
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How To Cite

Dr. H. B. Kekre, Dr. Tanuja K. Sarode, Ms. Ruhina B. Karani (2012).  2D Satellite Image Registration Using Transform Based and Correlation Based Methods. International Journal of Advanced Computer Science & Applications, 3(5), 66-72. https://europub.co.uk/articles/-A-140411