Image enhancement of x-ray microscope using frequency spectrum analysis

Image Quality Enhancement in X-Ray Microscopy

The goal of this work is to develop digital image processing tools for improving the quality of the images provided by the Göttingen transmission X-ray microscope at BESSY [1, 2]. We first present a method for correcting the inhomogeneous illumination. Then, we present results of image restoration techniques applied to X-ray microscopy images of test objects and of biological specimens containi...

A framed, 16-image Kirkpatrick-Baez x-ray microscope.

A 16-image Kirkpatrick-Baez (KB)-type x-ray microscope consisting of compact KB mirrors [F. J. Marshall, Rev. Sci. Instrum. 83, 10E518 (2012)] has been assembled for the first time with mirrors aligned to allow it to be coupled to a high-speed framing camera. The high-speed framing camera has four independently gated strips whose emission sampling interval is ∼30 ps. Images are arranged four to...

Do "Image Enhancement" Functions Really Enhance X-Ray Image Interpretation?

State-of-the art x-ray screening systems offer a variety of socalled “image enhancement” functions (IEFs). Examples are color inversion, edge-enhancement, organic only, metal only etc. IEFs are often promoted because they would bring out detail that is obscured or highlight certain features, such as for example organic content. In this study, we investigated the usefulness of IEFs for cabin bag...

Device enhancement using rotational X-ray angiography

Implantable cardiac devices, such as stents and septal defect closure devices are sometimes difficult to see on angiographic X-ray projection images. We present a method to enhance the visibility of these devices in rotational X-ray angiography acquisitions using automated marker detection and motion compensation. Automatic marker detection allows registration of the devices in the images of th...

Microfocus X-Ray and Image Enhancement of Ceramics