光学防抖对提高相机成像清晰度的影响分析

解官宝; 郭喜庆

光学防抖对提高相机成像清晰度的影响分析

解官宝^1,2, ,,
郭喜庆¹

1.
中国科学院光电研究院,北京 100094;
2.
中国科学院研究生院,北京 100049

详细信息

通讯作者:
解官宝（1987-），男，河南人，硕士研究生，主要从事光电检测和控制方面的研究工作。

中图分类号: TN206
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出版历程
- 刊出日期: 2012-03-15

Image stabilizer for improving definition of image

XIE Guan-bao^{1,2
, ,},
GUO Xi-qing¹

1.
Academy of Opto-electronics,Chinese Academy of Sciences,Beijing 100094,China;
2.
Guaduate School of Chinese Academy of Sciences,Beijing 100049,China

摘要

摘要: 研究了光学防抖提高相机成像清晰度的原理和效果。从相机成像光路上分析了抖动对成像的影响并给出抖动造成的偏移量的表达式；建立了光学防抖的控制模型，采用PID控制算法，利用MATLAB仿真得出防抖效果；在关闭和开启光学防抖条件下，对成像目标拍摄并经处理后得到2组8幅150112像素的图像。在基于频率域的直方图上，有光学防抖的图像增加10个左右高频分量；在基于空间域的能量梯度曲线上，有光学防抖的图像数量级从104提高到了105。
- 光电检测 /
- 光学防抖 /
- 成像清晰度 /
- MATLAB图像处理
Abstract: The principle and effect of image stabilizer for improving the definition of image are studied. First, the influence of shaking on imaging is analyzed according to the light path of camera and the expression of offset d caused by shaking is given; second, the paper establishes the control model of the image stabilizer, uses the proportional-integral-derivative (PID) control algorithm and gets the result of anti-shaking effects with the simulation of MATLAB; last, some objects are shot by a digital camera respectively under the conditions of opening and closing image stabilizer. Two groups, 8 images of 150112 pixels are obtained. Based on the histogram in frequency domain, the image shot with image stabilizer has 10 more high-frequency components than the image shot without image stabilizer on average; based on the energy gradient curve in spatial domain, the order of magnitude of the image shot with image stabilizer increases from 104 to 105.
- photoelectric detection /
- image stabilizer /
- definition of image /
- MATLAB image processing

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参考文献(1)

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