Correction of x-ray images

Details Correction of x-ray images Correction of x-ray images

2008-06-12

2010-12-28

Kao, Chih-Cheng G (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Absorption

C378S057000

Reexamination Certificate

active

07860214

ABSTRACT:
A technique to correct deficiencies in x-ray images of cylindrical or spherical objects that are a consequence of the geometry of the sample is disclosed, for both normal imaging of stationary objects with film or digital detectors and linescan imaging of moving objects. The methods described involve the use of attenuators specifically shaped to equalize the x-ray absorption across the sample, thus correcting the variation in pixel intensity caused by the varying thickness of the sample.

REFERENCES:
patent: 2139098 (1938-12-01), Raney
patent: 4163991 (1979-08-01), Burrig
patent: 6614878 (2003-09-01), Bogatu et al.
patent: 7034313 (2006-04-01), Hoffman
patent: 2002/0191738 (2002-12-01), Mazess et al.
Bull, C.R. and R. Zwiggelaar, “Discrimination between Low Atomic Number Materials from their Characteristic Scattering of X-ray Radiation” (1997) J. Agric. Engng Res. 68: 77-87.
Bull, C.R., R. Zwiggelaar, and R.D. Spelleer, “Review of Inspection Techniques base don the Elastic and Inelastic Scattering of X-rays and their Potential in the Food and Agricultural Industry” (1997) J. of Food Engineering 33: 167-179.
Butz, P., C. Hofmann, and B. Tauscher, “Recent Developments in Noninvasive Techniques for Fresh Fruit and Vegetable Internal Quality Analysis” (2005) J. of Food Science 70(9): 131-141.
Chen, X. et al. “Real Time Detection of Physical Hazards in De-Bonded Poultry Using High Resolution X-Ray Imaging” (2003) ASAE Meeting Paper No. 033084 St. Joseph, Mich.: ASAE.
Graves, M., A. Smith and B. Batchelor “Apporaches to Foreign Body Detection in Foods” (1998) Trends in Food Science & Technology 9: 21-27.
Graves, M., B. Batchelor and S. Palmer “3D X-ray Inspection of Food Products” (1994) SPIE 2298: 248-259.
Haff, R.P “Real-Time Correction of Distortion in X-Ray Images of Cylindrical or Spherical Objects and its Application to Agricultural Commodities” (2008) American Society of Agricultural and Biological Engineers 5(1): 341-349.
Haff, R.P. and T.F. Schatzki “Image Restoration of Line-Scanned X-Ray Images” (1997) Opt. Eng. 36(12): 3288-3296.
Jayas, D.S., C. Karunakaran and J. Paliwal “Grain Quality Monitoring Using Machine Vision and Soft X-Rays for Cereal Grains” (2004) International Quality Grains Conference Proceedings.
Jha, S.N. and T. Matsuoka “Non-Destructive Techniques for Quality Evaluation of Intact Fruits and Vegetables” (2000) Food Sci. Technol. Res. 6(4): 248-251.
Korgher, C.M., J.G. Bartle, J.G. West and V.-H. Tran, “Digital X-ray Imaging and Image Processing for Object Detection in Closed Containers” (2004) Proceedings of the Computer Graphics and Imaging Conference, Kauaii, HI.
Lin, T.-T. et al. “An Adaptive Image Segmentation Algorithm for X-Ray Quarantine Inspection of Selected Fruits” (2005) ASAE Meeting Presentation Paper No. 05123. St. Joseph, Mich.: ASAE.
Martens, G. et al. “Coherent X-Ray Scatter Imaging for Foodstuff Contamination Detection” (1993) SPIE 2092: 387-398.
Schatzki, T.F. et al. “Defect Detection in Applies by Means of X-Ray Imaging” (1997) American Society of Agricultural Engineers 40(5): 1407-1415.
Schatzki, T.F., A. Grossman and R. Young “Recognition of Agricultural Objects by Shape” (1983) IEEE Transactions on Pattern Analysis and Machine Intelligence PAMI-5(6): 645-653.
Schatzki, T.F. et al. “Defect Detection in Apples by Means of X-Ray Imaging” (1996) SPIE 2907: 176-185.
Shahin, M.A., E.W. Tollner and S.E. Prussia “Filter Design for Optimal Feature Extraction from X-Ray Images” (1999) American Society of Agricultural Engineers 42(6): 1879-1887.
Talukder, A. et al. “A New Feature Extraction Method for Classification of Agricultural Products from X-Ray Images” In: Precision Agriculture and Biological Quality, SPIE Proceedings (Eds) G.E. Meyer and J.A. DeShazer (1998) vol. 3543 p. 53-64.
Tao, Y. And J.G. Ibarra “Thickness-Compensated X-Ray Imaging Detection of Bone Fragments in Deboned Poultry-Model Analysis” (2000) American Society of Agricultural Engineers 43(2): 453-459.
Wagner, G.G. “Combining X-Ray Imaging and Machine Vision” (1987) Optics, Illumination, and Image Sensing for Machine Vision II, SPIE Proceedings, Bellingham Washington.
Zwiggelaar, R., C.R. Bull and M.J. Mooney “X-ray Simulations for Imaging Applications in the Agricultural and Food Industries” (1996) J. Agric. Engng. Res. 63: 161-170.
Zwiggelarr, R. et al. “The Detection of ‘Soft’ Materials by Selective Energy X-ray Transmission Imaging and Computer Tomography” (1997) J. Agric. Engng. Res. 66: 203-212.

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