涡轮叶片X射线图像超分辨率重建技术

基金项目:

航空科学基金资助项目(2006ZD53047)

详细信息

Super-Resolution Reconstruction for X-Ray of Turbine Blade

1. Laboratory of Contemporary Design and Integrated Manufacturing Technology, Northwestern Polytechnical University, Xi'an 710072, China;
2. School of Computer Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China

摘要: 针对涡轮叶片X光无损检测系统精度低的缺点,提出一种X光DR数字图像的分辨率增强方法。该方法采用一组包含相对位移的叶片X光图像,通过一种频率域方法对它们进行亚像素精确配准,然后采用非均匀插值重建出一幅高分辨率图像。实验结果表明该方法具有提高涡轮叶片X光数字图像分辨率的能力,具有良好的应用价值。
- 涡轮叶片 /
- X射线数字图像 /
- 超分辨率重建
Abstract: Based on non-destructive testing system for turbine blade,propose a resolution enhancement approach for X-ray DR digital image.In detail,firstly,we present a frequency domain technique to precisely register a set of digital X-ray image of turbine blade,which are translated,rotated against each other within at least the subpixel dimension,then a high-resolution image is reconstructed by using nonuniform interpolation.We demonstrate the ability of the approach to improve resolution of X-ray image of turbine blade,and the resulting high-resolution image show good visual results;it also contains more detail that can be exploited for zooming in non-destructive inspection.
- turbine blade /
- X-ray image /
- super-resolution reconstruction