The minimum convex closure is one of the widely studied problems in science of computinggeometry, as well as extensively applied in many fields of GIS.
最小凸包是计算几何中得到广泛研究的问题之一，在地理信息系统中也有着广泛应用。
2
The more complex the geometry, the more factors can be modeled but the slower the computing time.
几何形状越复杂，模型需要更多的因素，计算时间则更慢。
3
By using differential geometry property of small object of infrared image, computing minimal normal curvature which is used as the threshold to obtain candidate objects for small target.