关键词: 影像镶嵌, 镶嵌线, 灰关联分析, 斜率关联度

Abstract: This paper puts forward a novel algorithm based on grey relational analysis for detecting an optimal seam line in remote sensing image mosaic.First，the algorithm regards pixel neighboring sequence in overlapping area as referential sequence and compared sequence because of the relation of center point and neighboring points，then computes grey relational degree of referential sequence and compared sequence using slope relational degree，finally finds an optimal seam line which is less differences in color and texture between the images.Four sets of experimental results show the seam line detected by slope relational degree is more superior to that detected by normal method and verify the feasibility and validity of the new method.

Key words: image mosaic, seam line, Grey Relational Analysis（GRA）, slope relational degree