I would like to know about the flying of hilly areas. I have flown a hilly area of 1 sq km. When I have aligned all the photos then I have found that aligned flight lines have hight variation between the missions and finally got the GSD variation in Orthophoto.
Pease suggest me, how to solve this issue and got no height variation in highely undulated areas.
GSD & flight line height variation in Highely undulated areas.