Automatic Name Placement for Area Water Features on Small Scale Maps

Based on the special rules of Chinese for the area water features,this paper studies two basic aspects of annotation: getting the main skeleton line of a area feature and the scheme of choosing an optimized character position for it.A new algorithm is discussed based on the monotone chain for getting the main skeleton line of a area feature,then a simple is introduced scheme for choosing the optimized character position which is based on the main skeleton line.