International Journal of Advanced Research in Engineering and Technology (IJARET), ISSN 0976 – 6480(Print), ISSN 0976 – 6499(Online) Volume 4, Issue 2, March – April (2013), © IAEME 161 COMPARATIVE STUDY ON IMAGE FUSION METHODS IN SPATIAL DOMAIN Prof. Keyur N. Brahmbhatt 1 Assistant Professor, I.T Department B.V.M Engineering College VallabhVidyaNagar-388120, Gujarat, India. Dr. Ramji M. Makwana 2 Associate Professor, Computer Department ADIT Engineering College VallabhVidyaNagar-388120, Gujarat, India. ABSTRACT Image fusion is a process of combining images, obtained by sensors of different wavelengths simultaneously viewing of the same scene, to form a composite image. The composite image is formed to improve image content and to make it easier for the user to detect, recognize, and identify targets and increase his situational awareness. The research activities are mainly in the area of developing fusion algorithms that improves the information content of the composite imagery, and for making the system robust to the variations in the scene, such as dust or smoke, and environmental conditions, i.e. day or and night. This paper is structured in the following way: section 1 gives introduction to image fusion. Section 2 provides details on several fusion algorithms. Section 3 defines a set of image fusion measures of effectiveness. Section 4 provides a comparative study of the fusion techniques in spatial domain finally; Section 5 provides a summary of the paper and its main conclusions. Keywords: Spatial domain, Select Maximum/minimum, PCA, HIS, Bovey Transform INTERNATIONAL JOURNAL OF ADVANCED RESEARCH IN ENGINEERING AND TECHNOLOGY (IJARET) ISSN 0976 - 6480 (Print) ISSN 0976 - 6499 (Online) Volume 4, Issue 2 March – April 2013, pp. 161-166 © IAEME: www.iaeme.com/ijaret.asp Journal Impact Factor (2013): 5.8376 (Calculated by GISI) www.jifactor.com IJARET © I A E M E