Choi Hyun, Kim Jong-Pil, Song Myeong-Gyu, Kim Wan-Chin, Park No-Cheol, Park Young-Pil, Park Kyoung-Su
Department of Mechanical Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Korea.
Opt Express. 2008 Dec 8;16(25):21132-41. doi: 10.1364/oe.16.021132.
This paper analyzes the effects due to the angular motion of a small-sized imaging system equipped with an optical image stabilizer (OIS) on image quality. Accurate lens moving distances for the OIS required to compensate the ray distortion induced by the angular motion are determined. To calculate the associated modulation transfer function, the integrated and the compensated point spread functions are defined. Finally, the deterioration of the image resolution due to angular motion and the restorative performance of the OIS are analyzed by isolating seven types of angular motion.
本文分析了配备光学图像稳定器（OIS）的小型成像系统的角运动对图像质量的影响。确定了补偿角运动引起的光线畸变所需的OIS精确镜头移动距离。为了计算相关的调制传递函数，定义了积分点扩散函数和补偿点扩散函数。最后，通过分离七种角运动类型，分析了角运动导致的图像分辨率下降以及OIS的恢复性能。
