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Image processing apparatus, image processing method and program

An image processing device and image technology, applied in image data processing, image analysis, image enhancement, etc., can solve problems such as increased risk

Active Publication Date: 2014-10-15
OMRON CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0011] However, in the conventional technology, when the threshold value of the similarity (cumulative value of scores) is lowered once the threshold value of the similarity degree (cumulative value of the score) is lowered in response to the request to allow the deformation of the local shape of the measurement object, the problem that the shape does not match the model is mistakenly allowed. Increased danger of the object

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  • Image processing apparatus, image processing method and program
  • Image processing apparatus, image processing method and program
  • Image processing apparatus, image processing method and program

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Embodiment Construction

[0090] Embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code|symbol is attached|subjected to the same or corresponding part in a figure, and description is not repeated.

[0091]

[0092] figure 1 It is a schematic diagram showing the overall configuration of the visual sensor system 1 including the image processing device 100 according to the embodiment of the present invention.

[0093] refer to figure 1 , the vision sensor system 1 is installed in a production line or the like, and executes pattern matching processing on the workpiece 2 using a previously registered model (where an "edge code image" is used as described later).

[0094] In the visual sensor system 1 , the workpiece 2 is conveyed by a conveyance mechanism 6 such as a conveyor belt, and the conveyed workpiece 2 is photographed by an imaging device 8 at a predetermined time point. As an example, the imaging device 8 includes, in additio...

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Abstract

To provide an image processing apparatus capable of permitting local shape deformation of a measuring target in pattern matching using a shape feature of the measuring target. A model is defined by a plurality of first positions on an edge extracted from a model image and a changing direction of the edge in each of the first positions. An image processing apparatus (100) calculates a changing direction of an edge in a second position of an input image corresponding to the first position on the edge of the model image. The image processing apparatus (100) accepts an instruction associated with a permissible value of the changing direction of the edge. The image processing apparatus (100) calculates a similarity degree of the first position and the second position corresponding to the first position based on the accepted instruction, the changing direction of the edge in the first and second position. The image processing apparatus (100) determines whether a specific area in the input image is similar to the model or not based on the calculated similarity degree in the second positions.

Description

technical field [0001] The present invention relates to an image processing device, an image processing method, and a program for searching an area similar to a pre-registered model from an input image. Background technique [0002] Conventionally, in the field of FA (Factory Automation: industrial automation), for the input image of the measurement object (hereinafter, also referred to as "workpiece"), a pattern based on a previously registered pattern (hereinafter, also referred to as "model") is used. ) search processing (hereinafter, also referred to as "pattern matching processing"). Through such pattern matching processing, defects such as damage and dust appearing on the workpiece can be detected, and regions on the workpiece similar to the model can be searched for. [0003] As a method of such pattern matching processing, it is known to extract a part (hereinafter, also referred to as "edge (part)") where the gradation value (brightness) changes in the input image,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06K9/00G06V10/772
CPCG06T2207/20182G06K9/6206G06T7/0085G06T2207/30164G06T7/003G06T7/001G06K9/6255G06K9/6212G06T2207/20192G06T7/0032G06T2207/20044G06T7/344G06V10/754G06V2201/06G06V10/772G06F18/28
Inventor 加藤豊木内豊
Owner OMRON CORP