The Gray Processing of Moon Digital Orthophoto Map
Considering the mosaic result of the lunar DOM (Digital Orthophoto Map) produced by Chinas CE-1 satellite,there usually exists a sharp gray jump beside the joining line.As to a strip image,the gray distribution may be uneven because of the light changing or position difference during photographing.To solve these matters,a method was proposed which is based on dynamic rules to detect the best joining line,and then stretch image according to its gray histogram.By making the pixels around boundary to change gradually,the joining line will finally be invisible.In order to solve the uneven gray distribution problems causing by imaging angle,light condition and other factors,a homogenization technology based on statistics of gray distribution was proposed.Using statistical information of the bands longitudinal changes to united the gray level to a defaulted range.The experimental results show that the method of this paper can make the integral gray level become even,the transition become more gently,and visual effect become more natural.
Lunar DOM Best Joining Line Gray Homogenization Contrast Balanced
WuJian Xu Hao Sheng Chen Lou HuiJie Zhao
Vision Tower 1010,Beihang University,Xueyuan Rd,Haidian District,Beijing,China,100191
国际会议
沈阳
英文
2113-2117
2012-09-07（万方平台首次上网日期，不代表论文的发表时间）