Abstract
In iterative pseudo-inverse ghost imaging (IPGI), how much the noise interference item of the current iteration approximates the real noise greatly depends on the clarity of initial image. In order to improve IPGI, we propose a method that introduces anisotropic diffusion to construct a more accurate noise interference term, where anisotropic diffusion adapts to both the image and the noise, so that it balances the tradeoff between noise removal and preservation of image details. In our algorithm, the anisotropic diffusion equation is used to denoise the result of each iteration, then the denoised image is used to construct the noise interference term for the next iteration. Compared to IPGI, our method has better performance in visual effects and imaging quality, as the image edges and details are better preserved according to the experimental results.
Highlights
Traditional imaging technology reconstructs the object image with a photosensitive panel in which each pixel corresponds to a value of light intensity of the reconstructed object, usually considered as direct imaging technology
We propose a method combining anisotropic diffusion with IPGI, which can
We propose a method combining anisotropic diffusion with IPGI, which can smooth the noise in the images used to construct noise interference terms during iterations
Summary
Traditional imaging technology reconstructs the object image with a photosensitive panel in which each pixel corresponds to a value of light intensity of the reconstructed object, usually considered as direct imaging technology. The object beam is modulated by an unknown object and measured by a bucket detector with no spatial resolution; the reference beam is collected by a detector with spatial resolution. It is an indirect imaging technology in which the two detectors are not directly used for object reconstruction, but the objects can be achieved by the associative calculation of two groups of data the detectors collected [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]. The quantum light source was considered to be a necessary condition for ghost imaging, because GI was originally realized by the two-photon with entangled properties
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