Image processing system, image processing device, and image processing program
First Claim
1. An image processing system for performing image measurement for one or a plurality of measurement points preset in a workpiece using an appearance image of the workpiece, the image processing system comprising:
- a first imaging unit configured to capture the appearance image;
a robot that changes a relative positional relationship between the first imaging unit and the workpiece;
a first image processor configured to specify an arrangement situation of the workpiece based on information obtained by imaging the workpiece and specify a reference line with respect to each measurement point set in the workpiece according to the specified arrangement situation of the workpiece, wherein the reference line is set based on a material of the workpiece and a direction in which an irradiation light is incident;
a processor configured to position the first imaging unit on the specified reference line and give a command to the robot, wherein the robot moves the first imaging unit to a distance between the first imaging unit and the workpiece in a state in which an optical axis of the first imaging unit is matched with the specified reference line;
the first image processor configured to calculate a first feature amount regarding a degree of focusing of the first imaging unit based on the appearance image captured by the first imaging unit; and
the processor configured to determine the distance between the first imaging unit and the workpiece for performing image measurement for the measurement point based on a change in the first feature amount according to a change in the distance between the first imaging unit and the workpiece.
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Accused Products
Abstract
An image processing system (SYS) specifies an arrangement situation of a workpiece (W) provided by a line (L). The image processing system (SYS) specifies a normal (V) with respect to a set measurement point (Wp) of the workpiece (W) according to the specified arrangement situation of the workpiece (W), and changes a position and posture of the two-dimensional camera (310) so that the specified normal (V) matches an optical axis of the two-dimensional camera (310) (S1). The image processing system (SYS) changes a distance between the two-dimensional camera (310) and the measurement point (Wp) so that the specified normal (V) matches the optical axis of the two-dimensional camera (310), to focus the two-dimensional camera (310) on the measurement point (Wp).
7 Citations
20 Claims
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1. An image processing system for performing image measurement for one or a plurality of measurement points preset in a workpiece using an appearance image of the workpiece, the image processing system comprising:
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a first imaging unit configured to capture the appearance image; a robot that changes a relative positional relationship between the first imaging unit and the workpiece; a first image processor configured to specify an arrangement situation of the workpiece based on information obtained by imaging the workpiece and specify a reference line with respect to each measurement point set in the workpiece according to the specified arrangement situation of the workpiece, wherein the reference line is set based on a material of the workpiece and a direction in which an irradiation light is incident; a processor configured to position the first imaging unit on the specified reference line and give a command to the robot, wherein the robot moves the first imaging unit to a distance between the first imaging unit and the workpiece in a state in which an optical axis of the first imaging unit is matched with the specified reference line; the first image processor configured to calculate a first feature amount regarding a degree of focusing of the first imaging unit based on the appearance image captured by the first imaging unit; and the processor configured to determine the distance between the first imaging unit and the workpiece for performing image measurement for the measurement point based on a change in the first feature amount according to a change in the distance between the first imaging unit and the workpiece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An image processing device for performing image measurement for one or a plurality of measurement points preset in a workpiece using an appearance image of the workpiece, the image processing device comprising:
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a first interface that receives information on an appearance image from a first imaging unit that captures the appearance image; a second interface for communicating with a robot that changes a relative positional relationship between the workpiece and the first imaging unit; a first image processor configured to specify an arrangement situation of the workpiece based on information obtained by imaging the workpiece and specify a reference line with respect to each measurement point set in the workpiece according to the specified arrangement situation of the workpiece, wherein the reference line is set based on a material of the workpiece and a direction in which an irradiation light is incident; a processor configured to position the first imaging unit on the specified reference line and give a command to the robot, wherein the robot moves the first imaging unit to a distance between the first imaging unit and the workpiece in a state in which an optical axis of the first imaging unit is matched with the specified reference line; the first image processor configured to calculate a first feature amount regarding a degree of focusing of the first imaging unit based on the appearance image captured by the first imaging unit; and the processor configured to determine the distance between the first imaging unit and the workpiece for performing image measurement for the measurement point based on a change in the first feature amount according to a change in the distance between the first imaging unit and the workpiece.
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20. A non-transitory computer-readable recording medium comprising an image processing program for performing image measurement for one or a plurality of measurement points preset in a workpiece using an appearance image of the workpiece, the image processing program causing a computer to execute:
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imaging the workpiece using a first imaging unit; specifying an arrangement situation of the workpiece based on information obtained by imaging the workpiece; specifying a reference line with respect to each measurement point set in the workpiece according to the specified arrangement situation of the workpiece, wherein the reference line is set based on a material of the workpiece and a direction in which an irradiation light is incident; positioning the first imaging unit on the specified reference line; giving a command to the robot that changes a relative positional relationship between the first imaging unit and the workpiece, wherein the robot moves the first imaging unit to a distance between the first imaging unit and the workpiece in a state in which an optical axis of the first imaging unit is matched with the specified reference line; calculating a first feature amount regarding a degree of focusing of the first imaging unit based on the appearance image captured by the first imaging unit; and determining the distance between the first imaging unit and the workpiece for performing image measurement for the measurement point based on a change in the first feature amount according to a change in the distance between the first imaging unit and the workpiece.
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Specification