Applications of Green Function-Complex Conjugate Gradient Method-Fast Fourier Transform in Near-field Optics Images 格林函数共轭梯度法快速傅立叶变换在近场光学成像中的应用
Digital Holography Free of Zero-Order Diffraction and Conjugate Images 无直透光和共轭像的数字全息
At first, the concept of T-collinear equation is explained in this paper. Based on T-collinear equation the rules and mathematic model for 3D registration and 3D reconstruction are put forward. The computation method for 3D registration and 3D reconstruction with two conjugate images is studied. 本文首先解释T-共线方程的概念,提出了基于T-共线方程进行三维配准的准则和数学模型,以及两共轭影像在三维空间进行配准和三维重建的计算方法。
Three constraint conditions are advanced and bias ranges are properly selected to match feature points in conjugate images. 提出三个约束条件并适当选取误差带实现共轭图像中特征点的匹配。
Numerical reconstruction of off-axis digital hologram based on angular spectrum diffraction and elimination of zero-order and conjugate images using spatial frequency filter owing to its Spatial spectrum distribution is separate is presented. 分析了离轴数字全息的频谱分布,基于角谱衍射的方法进行离轴数字全息的重建,并通过频域滤波去除零级像、共轭像。
Conjugate Images Boundary and Fractal Characterization Identification Methods of Indexing-cam Mechanism Based on Fractal-geometry Study 分度凸轮机构共轭接触域图象轮廓的分形表征及识别方法的研究
Based on the relationship of spectra, the spectrum band in each plane can be calculated. By using digital filter method, conjugate images and zero-order diffraction images are eliminated. 通过频谱对应关系求得各个面的频谱分布,使用数字滤波方法,成功地消除了零级衍射和共轭像;