Multidimensional space angle method for alteration information abstraction from vegetation covered area has been presented in the light of spectral angle mapping in this paper. 摘要基於光譜角製圖法，提出運用多維空間角度方法來提取植被覆蓋較好區域的遙感圖像蝕變信息。
It will facilitate dissemination of transport information to the public via established distribution channels such as variable message panels and electronic mass media. 利用這系統，運輸資訊可通過路旁的可變信息屏幕或電子傳媒發放。
