基于相位一致的高分辨率遥感图像分割方法.pdf

第36卷第2期 测绘学报 V01．36．No．2 ACTA 2007年5月 GEODAETICAetCARTOGRAPHICASINICA May，2007 文章编号：1001—1595(2007)02—0146．06 中图分类号：TP75l 文献标识码：A 基于相位一致的高分辨率遥感图像分割方法 肖鹏峰，冯学智，赵书河，佘江峰 (南京大学地理信息科学系，江苏南京210093) of Sensed BasedonPhase SegmentationHigh-resolution Congruency RemotelyImagery XIAO Xue-zhi，ZHAOShu-he，SHE Peng-feng，FENG Jiang—feng of 210093，China) (DepartmentGeographical／nformation_sc抬n∞，NanjingUniversity，Nanjing of sensed constructsthebaseof andob· Abstract：Segmentationhigh-resolutionremotelyimagery objectrecognition classification．Performanceofwatershedtransformreliesonthe of extractionfrom ject—oriented algorithmgradient the isintroducedasanew todetect featuresfromIKONOS originalimage．Phasecongruency methodologygradient Pan model thatfeaturesaye at inan wheretheFourier imagery．Thispostulates perceived components points image aye in andthatthe offeatures onthevalueofthe multi—scale im— maximallyphase type depends phase．The gradient areobtained Phase modeltothe with Gaborwaveletfiltersover5scalesand ages byapplyingcongruency imagesLog restrainthe 6orientations．Toover ofwatershedtransform，Phase shouldbe congruency segmentation gradient markedbeforethe