Pixelate Removal in an Image Fiber Probe Endoscope Incorporating Comb Structure Removal Methods
Pixelate Removal in an Image Fiber Probe Endoscope Incorporating Comb Structure Removal Methods
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DOI：
10.1166/jmihi.2014.1255
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发表时间：
2014-04-01
影响因子：
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通讯作者：
Matham, Murukeshan Vadakke
中科院分区：
文献类型：
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作者：
Shinde, Anant;Matham, Murukeshan Vadakke
近年来，灵活而轻薄的内窥镜检查程序已成为医学诊断中不可或缺的工具。然而，对缩小探针直径和提高空间分辨率的要求尚未达到临床医生的预测目标。由于使用空间调制器以模拟或数字形式刺激选定的光纤组，因此使用图像光纤束可以提供可变分辨率，因此重新引起了人们的兴趣。然而，由于光纤边界的存在，导像介质的空间分辨率会下降。本文概述了不同的图像处理协议，这些协议可以集成到这样一个基于图像光纤的探头内窥镜系统中，以去除图像中的像素外观。将空间平均滤波器、光谱滤波器和插值方法等梳状结构去除方法与成像方案相结合，并进行了对比分析。作为概念验证分析，我们消除了像素伪影，并通过成像美国空军（USAF）分辨率测试图和神经母细胞瘤细胞作为测试样本进行说明。
Flexible and thin endoscopy procedures have become an indispensible tool in medical diagnostics in the recent past. However, the demands for reduced probe diameter as well as enhanced spatial resolution have not yet met the forecasted target by the clinical practitioners. There has been renewed interest in using image fiber bundle as it can offer variable resolution by exciting the chosen fiberlet groups using spatial modulator in the analog or digital form. However, the image-guiding media accompany the degradation in spatial resolution due to the fiberlet boundaries. This paper overviews different image processing protocols that can be integrated with such an image fiber based probe endoscopic system for removing the pixelate appearance from the image. Comb structure removal approaches such as spatial averaging filters, spectral filters and interpolation methods are integrated with the imaging protocol and a comparative analysis is presented in this paper. As a proof-of-concept analysis, we have eliminated the pixelation artifacts and illustrated by imaging United States Air Force (USAF) resolution test chart and neuroblastoma cells as test samples.