多视角图像标定与图像合成

近年来随着视觉成像技术的快速发展,成像系统也在不断改进。单一摄像机成像已经不能满足人们对大视场高动态的需求,所以具有大视场优势的多摄像机系统引起广泛的关注。依据复眼成像原理,使用多摄像机系统研究其成像特性。考虑到成像过程中的损耗和镜头的特性,对所用摄像机进行辐照度定标,并进行光晕校正,同时求解出了摄像机辐射响应和暗电流的函数,随后对多摄像头系统进行大视场图像拼接和高动态范围成像。实验表明,辐射定标对于上述成像具有良好效果。

Multi-view image radiometric calibration and synthesis

In recent years, visual imaging technology has been developed rapidly, the imaging system is also improving. Single image sensor has been unable to satisfy the demand, which is the large field of view and high dynamic range. Thus, multi-camera systems with large field of view(FOV) have attracted wide attentions. Based on the principle of compound eye imaging, the multi-camera system was used to study its imaging characteristics. Considering the loss in the imaging process and the influence of the lens, the irradiance of the camera was calibrated and the vignetting was corrected. At the same time, the functions of the camera's radiation response and dark current were solved. Then the large FOV image mosaic and high dynamic range imaging of multi-camera system were carried out. Experiments show that radiometric calibration has a good influence on the above imaging.