main character image

To get an idea of what I actually wanted, first I took the main character and moved it around the canvas; finally deciding to place him on the lower half of the image following the flow of his body.

为了弄明白我到底想要得到什么，我将人物在画布上到处移动。 最终，我决定顺从他身体的趋势将其放在图像中间偏下的位置。

First off I opened the original image resulted from the shooting with the main purpose being isolating the character and the shadows on the floor.

首先，我打开拍摄的源照片，这张照片主要是为分离人物和地面上影子而拍摄的(这里是说，作者需要一张易于扣取人物及其影子的照片——译者注)。

The UAV aerial images have fine resolution. The main problem of the UAV image aided navigation is how to pick-up the main character and reduces the calculation cost.

无人机航拍图像具有很高分辨率，如何提取主要特征并降低计算代价是无人机图像匹配辅助导航的主要问题。