Recognition and extraction of topographic features from gray-sca...

Recognition and extraction of topographic features from gray-scale image of a celestial body Recognition and Extraction of Topographic Features from Gray-scale Image of a Celestial Body Toshihiko Misu Graduate School of Engineering, The University of Tokyo, Tokyo, Japan 113-8656 Tatsuaki Hashimoto and Keiken Ninomiya The Institute of Space and Astronautical Science, Sagamihara, Japan 229-8510 SUMMARY A method of recognition and extraction of geographi- cal features from a grayscale im