Method for filling and sharpening false colour layers of dual energy X-ray images

Krzysztof Dmitruk, Marcin Denkowski, Paweł Mikołajczak


An X-ray scanning and image processing have a vast

range of applications in the security. An image of a content of

some package being passed for example to an airplane or to the

court house may help to figure out if there are any dangerous

objects inside that package and to avoid possible threatening

situation. As the raw X-ray images are not always easy to analyze

and interpret, some image processing methods like an object

detection, a frequency resolution increase or a pseudocolouring

are being used. In this paper, we propose a pseudocoloring

improvement over material based approach. By addition of the

edge detection methods we fill and sharpen colour layers over

the image, making it easier to interpret. We demonstrate the

effectiveness of the methods using real data, acquired from a

professional dual energy X-ray scanner.

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K. Moreland, “Diverging color maps for scientific visualization,” Advances in Visual Computing, pp. 92–103, 2009.

G. Flitton, T. Breckon, and N. Megherbi, “A comparison of 3d interest point descriptors with application to airport baggage object detection in complex ct imagery.” Pattern Recognition, vol. 46, pp. 2420–2436,

Z. Ying, R. Naidu, and C. Crowford, “Dual energy computed tomography for explosive detection,” Journal of X-Ray Science and Technology,

vol. 14, pp. 235–256, 2006.

H. Watabiki, T. Takeda, M. S., and Y. T., “Development of dual-energy x-ray inspection system,” Anritsu Technical Review, vol. 20, pp. 59–66, 2013.

J. Evans, Y. Liu, J. Chan, and D. Downes, “View synthesis for depth from motion 3d x-ray imaging.” Pattern Recognition Letters, vol. 44, pp. 1863–1873, 2006.

V. Rebuffel and J. Dinten, “Dual-energy x-ray imaging: Benefits and limits,” ECNDT, vol. 1.3.1., 2006.

J. Hubbell and S. Seltzer, “Tables of x-ray mass attenuation coefficients and mass energy-absorption coefficients from 1 kev to 20 mev for elements z = 1 to 92 and 48 additional substances of dosimetric interest,”

NISTIR, vol. 5632, 1995.

S. Chang, H. Lee, and G. Cho, “Application of a dual-energy monochromatic x-ray ct algorithm to polychromatic x-ray ct: a feasibility study,” Nuclear Engineering Technology, vol. 44, pp. 61–70, 2012.

F. Firsching, T. Fuchs, and N. Uhlmann, “Method for dual high energy x-ray imaging with flat panel detectors,” ECNDT, vol. 1.3.1., 2006.

J. Parker, Algorithms for Image Processing and Computer Vision. Wiley, 1997.

S. Khan and W. Chai, “An image enhancement technique of x-ray carry on luggage for detection of contraband/illicit object(s).” IJCSI International Journal of Computer Science Issues, vol. 9, pp. 205–211, 2012.

K. Zuiderveld, “Contrast limited adaptive histogram equalization,” in Graphics gems IV, P. Heckbert, Ed. San Diego: Academic Press Professional, 1994, pp. 474–485.

M. Roomi and R. Rajashankarii, “Detection of concealed weapons in x-ray images using fuzzy k-nn.” International Journal of Computer Science, Engineering and Information Technology, vol. 2, pp. 187–196, 2012.


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