A segmentation algorithm for defocused images using multi-resolution and fuzzy clustering 一种基于多分辨率与模糊聚类技术的散焦图像分割算法
Always go for final image at focus, not the perfect defocused image for collimating 这个关键就是得到焦点内完美的图像,这也是我们不断调教焦内焦外获得一个最适当的图像的目的。
According to the discussing results, it can be seen that defocus measurement method with one-way defocused detector is really an effective method for defocus monitoring 研究结果表明,单向离焦差动检测方法是一种有效的离焦监测技术途径。
In this paper the positions of images reconstructed by illuminated plane waves of fraunhofer defocused holographic memory system are theoretically described and discussed 摘要对用平面波读出夫琅和费离焦全息存储系统再现像的位置进行理论分析与讨论。
Thus, a simple comparison of the normal image with the defocused image enables the relative rotation between the final image and diffraction space to be determined 因此,普通映像和散焦映像的一个简单对比能够体现在最终映像和指定的衍射区域之间的相关旋转。
Abstract : in this paper the positions of images reconstructed by illuminated plane waves of fraunhofer defocused holographic memory system are theoretically described and discussed 文摘:对用平面波读出夫琅和费离焦全息存储系统再现像的位置进行理论分析与讨论
In this paper, the differential astigmatic detection method for defocus measurement with one-way defocused detector is developed from the conventional differential astigmatic detection 本文在传统差动像散检测方法基础上,给出一种基于单向离焦的差动像散检测方法。
At last, the principle of defocus measurement with one-way defocused detector is proved correctly . the result compared with conventional differential defocus measurement method shows that the higher measurement sensitivity can be achieved by the method discussed in this paper 最后,本文通过实验验证了单向离焦检测原理的正确性,并通过实验与差动像散检测方法进行了比较,结果表明本文方法具有更高的测量灵敏度。
Firstly, in order to meet the requirement in application, the influencing factors for defocus measurement with one-way defocused detector are analyzed and the influencing regularity of detector position are discussed, after that the relationship between defocus errors and output signals is given too . according to the optimization results, the experimental device is established for this paper 首先,本文从工程应用角度出发,通过分析单向离焦检测的误差影响因素,讨论了探测器位置误差对测量的影响规律,给出了离焦量与测量信号的输出关系,优化设计了检测光学系统,搭建了实验装置。
For example, if the diffraction pattern is defocused by under-focusing the diffraction lens then the image of the specimen can be seen in both the direct and diffracted beams in the diffraction pattern and, since under-focusing the diffraction lens images a plane above the diffraction pattern, these images will not be inverted with respect to the diffraction pattern 比如,如果衍射模型是通过衍射透镜下焦散焦的,样本的映像就能在衍射模型中直接的衍射束中看到,但是由于衍射透镜下焦在衍射模型之上平面成像,这些映像就不会对应衍射模型倒置。