Algorithm of aerial optical image mosaicing based on platform parameters
基于平台参数的航空光学图像镶嵌算法研究

Mosaicing of aerial images is important to image intelligence analysis in military. In this paper , characteristic of aerial optical imaging and parameters of aerial platform are analyzed. Based on the principle of perspective projection model, the coordinate transform relationship between pixel coordinate and world coordinate is mainly deduced under oblique projection, and rough mosaicing regions of the two images are calculated under world coordinate, in this step, not much attention is paid to the accuracy. Then, SIFT algorithm is employed to extract invariable feature from the rough mosaicing regions, and calculate the transform model parameters of the two images accurately, in order to realize mosaicing refinedly. Experiments results of field images show that the algorithm is time efficient and fine-results in mosaicing.