Mudassar Asloob A, Hussain Anwar
Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences, 45650 Islamabad, Pakistan.
Appl Opt. 2010 Jun 10;49(17):3434-41. doi: 10.1364/AO.49.003434.
This paper describes a technique of super-resolution that is based on holographic imaging in which three holograms corresponding to one orientation of the fringes are recorded. To recover the two-dimensional object spatial frequency, we take four orientations of the fringes with 45 degrees steps. For each orientation of the fringes, the hologram recording scheme will remain the same. The orientation of the reference beam is fixed throughout the measurements. Once the three holograms are recorded for each orientation of the fringes with a fixed amplitude of the reference beam, an algorithm is applied for each orientation. The algorithm processes the three holograms to construct a synthesized spectrum in a particular orientation; taking the inverse Fourier transform of this synthesized spectrum will give the synthesized image in that particular orientation. Different synthesized spectra are combined to obtain an overall synthesized spectrum and a super-resolved image is formed.
本文描述了一种基于全息成像的超分辨率技术，其中记录了对应于条纹一个方向的三个全息图。为了恢复二维物体空间频率，我们以45度步长获取条纹的四个方向。对于条纹的每个方向，全息图记录方案保持不变。在整个测量过程中参考光束的方向是固定的。一旦以固定的参考光束振幅为条纹的每个方向记录了三个全息图，就对每个方向应用一种算法。该算法处理这三个全息图以在特定方向上构建合成频谱；对该合成频谱进行傅里叶逆变换将得到该特定方向上的合成图像。将不同的合成频谱组合起来以获得整体合成频谱，并形成超分辨率图像。
