X-RAY INSPECTION APPARATUS
First Claim
1. An x-ray inspection apparatus comprising:
- an irradiation unit configured and arranged to irradiate x-rays to an inspected object;
an x-ray detection unit configured and arranged to detect an amount of x-rays that are irradiated by the irradiation unit and transmitted through the inspected object;
a sample image obtaining unit configured to obtain a plurality of sample x-ray transmission images of a plurality of sample inspected objects based on e an amount of x-rays irradiated to each of the sample inspected objects detected by the x-ray detection unit;
an input unit configured to receive inputs of actual masses of the sample inspected objects;
an ideal curve generating unit configured to generate an ideal curve which indicates a a mass per unit area with respect to a brightness per unit area included in the sample x-ray transmission images;
a curve adjustment unit configured to adjust the ideal curve generated by the ideal curve generating unit for a plurality of gradation levels based on the actual masses input in the input unit; and
a mass estimation unit configured to estimate a mass of the inspected object based on the amount of x-rays irradiated to the inspected object and detected by the x-ray detection unit according to the ideal curve adjusted by the curve adjustment unit.
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Accused Products
Abstract
An x-ray inspection apparatus includes a sample image obtaining unit, an ideal curve generating unit, a curve adjustment unit, and a mass estimation unit as a function block generated by a control computer. The sample image obtaining unit obtains 10 x-ray transmission images of sample inspected products each of whose mass is known in advance. The ideal curve generating unit generates a table based on a formula that indicates a relationship between the brightness of an area included in the x-ray transmission images and the estimated mass of the area. The curve adjustment unit refers to the input actual mass of each x-ray transmission image and adjusts the table such that the estimated mass approximates the actual mass. The mass estimation unit determines the estimated mass per unit area based on the post-adjusted table and adds up these masses to determine the total estimated mass of the product.
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Citations
12 Claims
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1. An x-ray inspection apparatus comprising:
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an irradiation unit configured and arranged to irradiate x-rays to an inspected object; an x-ray detection unit configured and arranged to detect an amount of x-rays that are irradiated by the irradiation unit and transmitted through the inspected object; a sample image obtaining unit configured to obtain a plurality of sample x-ray transmission images of a plurality of sample inspected objects based on e an amount of x-rays irradiated to each of the sample inspected objects detected by the x-ray detection unit; an input unit configured to receive inputs of actual masses of the sample inspected objects; an ideal curve generating unit configured to generate an ideal curve which indicates a a mass per unit area with respect to a brightness per unit area included in the sample x-ray transmission images; a curve adjustment unit configured to adjust the ideal curve generated by the ideal curve generating unit for a plurality of gradation levels based on the actual masses input in the input unit; and a mass estimation unit configured to estimate a mass of the inspected object based on the amount of x-rays irradiated to the inspected object and detected by the x-ray detection unit according to the ideal curve adjusted by the curve adjustment unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12)
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10. A computer-readable medium encoded with an x-ray inspection program configured to estimate a mass of an inspected object based on an amount of transmitted x-rays that are irradiated to the inspected object comprising computer-executable instructions for performing:
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a first step in which an amount of x-rays that are irradiated to a plurality of sample inspected objects is detected, and x-ray transmission images of the sample inspected objects are obtained based on the amount of x-rays detected; a second step in which inputs of actual masses of the sample inspected objects whose x-ray transmission images are obtained in the first step are received; a third step in which an ideal curve derived based on a mass per unit are with respect a brightness per unit area included in the x-ray transmission images is generated; a fourth step in which the ideal curve generated in the third step is adjusted for a plurality of gradation levels based on the actual masses input in the second step; and a fifth step in which the mass of the inspected object is estimated based on the ideal curve adjusted in the fourth step.
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Specification