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Estimation of the gray level variations in soft and hard peri-implant tissue from X-ray images

机译:从X射线图像估计软和硬种植体周围组织的灰度变化

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摘要

In the treatment and assessment of periodontal disease periapical films are taken at regular intervals. The films are compared around the region of the implant to monitor the changes that have taken place. A computer-assisted method to automate this process is presented here. To compare two images, a pair of X-ray images are superimposed on top of each other. The images are normalized and transformed to obtain the best fit. These images are subtracted and the difference in pixel values are used as a basis for analysis. A method for improving the alignment accuracy and contrast compensation is highlighted.
机译:在牙周疾病的治疗和评估中,定期采集根尖膜。在植入物周围比较薄膜,以监测发生的变化。本文介绍了一种自动执行此过程的计算机辅助方法。为了比较两个图像,将一对X射线图像彼此叠加。对图像进行归一化和转换以获得最佳拟合。减去这些图像,并将像素值的差异用作分析的基础。着重介绍了一种提高对准精度和对比度补偿的方法。

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