A method for calculating the optical axis micro vibration attitude of hyperspectral remote sensors for space surveying and mapping
Propose a method for calculating the micro vibration pose of the optical axis of hyperspectral remote sensing sensors for space surveying.Through precise pose calculation,accurately grasp the pose changes of the optical axis of hyperspectral remote sens-ing sensors in space,which is conducive to improving the imaging quality of space surveying images.The optical joint transform corre-lator(JTC)is used to quickly obtain spatial mapping hyperspectral remote sensing image sequences.After image denoising based on anisotropic diffusion model,the image sequences are grouped pairwise according to the proximity principle.The joint correlation transform method is used to perform correlation operations on adjacent reference frame images and target frame images within the group,obtain cross-correlation peaks,and complete image motion measurement.Based on the image motion measurement results,the attitude calculation method is used to calculate the pitch and roll direction offset between the two images,achieving the measure-ment of hyperspectral remote sensing optical axis micro vibration.The experimental results show that after image denoising,this meth-od can improve image quality and avoid the passivation of cross-correlation peaks caused by noise;Image shift can be measured by obtaining the cross-correlation peaks between two images;The optical axis attitude calculation error of the remote sensor in both the pitch and roll directions does not exceed 0.20,indicating a high calculation accuracy.
万方数据
维普
