Inverse filtering for time, delay and integration X-ray imaging

[摘要] In food industry, most finished products are scanned by X-ray for contaminations.These X-ray machines continuously scan the product passing through. Tominimize the required X-ray power, a Time, Delay and Integration (TDI) CCD sensor is used to capture the image.While the product moves across the sensor area, the angle of the X-rays changes during the pass.This can be compensated for by adjusting the sensor shift speed to focus on a single plane of the product. If theproduct has a significant thickness, the image will show artifacts due to the laminographic effect. In this contribution we demonstrate that bythe use of inverse filtering images which are focused on planes of different height can be generated out of asingle X-ray image.

[学科分类] 电子、光学、磁材料