Inspection system and inspection method

Abstract

To provide an inspection system with which, even when using a plurality of illuminations, it is possible to adjust an imaging range of a camera to same brightness easily in a short time, without relying on competence of operators.SOLUTION: The present invention pertains to an inspection system comprising: a camera that is installed in a path where an object is transported; a plurality of illuminations that is arranged so as to irradiate an imaging region of the camera with light; a light quantity control device that is installed so as to be capable of adjusting a light quantity of illuminations for each illumination; an individual graph creation unit that creates an individual graph in which the light radiated for each illumination with a preset reference amount of radiation is converted into a graph by a received amount of light relative to a visual field of the camera; a virtual total graph creation unit that creates a virtual total graph in which all of the individual graphs of the plurality of illuminations are integrated; an individual graph change unit that causes the results from the light quantity adjustment of illuminations by the light quantity control device to be reflected in the individual graphs; and a display device that displays at least one of the individual graphs and the virtual total graph on a screen.SELECTED DRAWING: Figure 1

Claims

1. An inspection system that captures an image of an object being transported in the transport direction, and performs image processing on the image for inspection, A camera installed along the path through which the object is transported, Multiple lights arranged to illuminate the imaging area of ​​the camera, A light intensity control device is installed so that the light intensity of the aforementioned lighting can be adjusted for each lighting fixture, An individual graph creation unit creates individual graphs that graph the amount of light received relative to the camera's field of view, based on the light irradiated for each of the lights with a preset reference irradiation amount. A virtual total graph creation unit creates a virtual total graph by integrating all of the individual graphs of the multiple lights mentioned above. A unit for changing individual graphs that reflects the results of adjusting the light intensity of the lighting by the light intensity control device onto the individual graphs, A total illumination graph creation unit generates a graph of the light emitted by all of the aforementioned illuminations, based on the amount of light received relative to the field of view of the camera. The system includes a display device that displays at least one of the individual graphs or the virtual total graph on its screen, An inspection system that extracts the difference between the created virtual total graph and the total irradiation graph, and corrects the virtual total graph using the difference.

2. The plurality of lights are arranged in a row perpendicular to the direction in which the object is transported. The inspection system according to claim 1, wherein the light intensity control device is configured to change the light intensity of the plurality of lights in order from the lights arranged at the ends of the row.

3. The plurality of lights are arranged in a row perpendicular to the direction in which the object is transported. The inspection system according to claim 1, wherein the light intensity control device is configured to change the light intensity of every other of the plurality of lights arranged in a row.

4. An inspection method which involves capturing an image of an object being transported in the transport direction using a camera, and then performing image processing on the image for inspection, The process involves illuminating the imaging area of ​​the camera with multiple lights positioned to emit light, each at a reference irradiation amount, and creating individual graphs representing the amount of light received by the camera. A step of creating a virtual total graph which is a graph that integrates all of the individual graphs of the multiple lights, The steps include displaying at least one of the individual graphs or the virtual total graph on a display device, The process of adjusting the light intensity for each of the aforementioned lights using a light intensity control device, A step of reflecting the result of adjusting the light intensity of the lighting by the light intensity control device in the individual graphs, A step of creating a total illumination graph showing all of the aforementioned lights applied, A step of comparing the total irradiation graph and the virtual total graph and extracting the difference, An inspection method comprising the step of correcting the virtual total graph based on the extracted difference.

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