摘要
机载航拍摄影时,地球曲率和飞行器的姿态变化会引起传感器倾斜,传感器倾斜拍摄使图像产生几何畸变。研究了基于坐标变换与重采样的几何校正方法,有效地矫正了图像的几何畸变,并设计了适用于机载航拍图像几何校正的集成了8片TS201芯片的高速处理板卡。经工程验证,该图像校正板卡充分满足图像几何校正对运算速度和存储容量的要求,能够快速准确地实现几何校正。
In aerial photograph system,the curvature of the earth and the changing of the aircraft attitude will bring slant of sensors,and slant of sensor will bring image geometrical distortion.This paper proposes a geometric correction method based on coordinate transformation and resampling theory that can correct the image distortion effectively,and designs a high-speed processing board that integrates eight pieces of TS201 chip used for aerial photographing image geometric correction.Practical project validates that this image correction board can fully meet the speed of calculation and the capacity of storage and implement geometrical correction correctly and rapidly.
出处
《无线电工程》
2010年第5期49-51,共3页
Radio Engineering
关键词
几何校正
坐标变换
重采样
航拍图像
geometric correction
aerial photography
coordinate transformation
resample
