Abstract: an　improved　adaptive 　bandwidth　calculation　al gorithm　spectral 　space 　is 　proposed　extendingcomanicius　method　of 　calculating　the 　adaptive 　bandwidth　both　in 　spectral 　and　spatial 　space．a　daptive 　bandwidths　are 　used 　in 　the　mean　shift 　al gorithm．with 　the 　traditional 　fixed 　bandwidth　ms　al gorithm　and　comanicius　adaptive　ms　al gorithmthe　new　adaptive　ms　al gorithm　proposed　by　this　paperachieves　better 　se gmentation　results