X射线检测中的图像质量的改善

The Improvement of the Image Quality in Radiography

对射线实时成像的预处理技术进行了较为详细的研究 ,提出了图像增强处理的硬件方法并对其原理进行了介绍。从射线实时成像检测的特点出发 ,重点对图像的去噪处理进行了分析与比较 ,分别采用叠加平均、局部平滑、方向滤波、频域滤波等方法进行处理 ,分别给出了这些方法的数学模型及处理结果。实际表明 ,经过以上处理 。

The research is carried out for the preprocessing techniques of real-time radiography. An image enhancing method is proposed based on hardware processing and its principle is presented. Combining with the characteristics of the real-time radiography, the image processing methods are analyzed and compared to eliminate the noise. In the paper, different methods based on image superposition, local smoothing, directional filtering and frequency-domain filtering are employed to improve the image quality. Meanwhile, the mathematical model and the processing results are presented. It is indicated through experiments that the image quality of real-time radiography can be obviously improved by these methods.