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Open eVision
Licensing System Demo
New Licensing System
General Features
Development Tools
Open eVision Studio
Libraries
General-purpose
EasyImage
EasyColor
EasyObject
EasyMatch
EasyFind
EasyGauge
Mark Inspection
Open eVision
Data Sheet
Open eVision Eval
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Geometric Pattern Matching
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Main Features
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Typical Applications
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Feature point technology
Fully automatic, fast and robust
Rotation and scaling invariant
High tolerance to pattern degradation
Don't care areas
User-defined pivot point
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Fiducial alignment
Die & wire bonding
PCB inspection
Printing industry
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Based on a innovative feature-point technology, EasyFind is designed to rapidly find one or more instances of a reference model
in the image. Compared to classical algorithms, EasyFind features faster processing and improved robustness. Euresys' geometric
pattern finder shows excellent performances when handling instances that are highly degraded due to noise, blur, occlusion,
missing parts or unstable illumination conditions. With an adjustable accuracy up to sub-pixel level, EasyFind reports very precise
information about the instances found, such as their location, rotation angle, scale and matching score. EasyFind supports don't
care areas. This feature allows the creation of complex pattern shapes.
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Fast Processing and Improved Robustness
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EasyFind is based on a novel feature-point technology. Instead of
comparing the reference model to the sample image pixel-wise, it
carefully selects salient features in the model. This method allows
EasyFind to match only the areas that convey valuable information,
resulting in faster processing and much improved robustness.
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EasyFind also brings a new approach to the problem of detecting
insufficiently defined models in an image by proposing three selectable
pattern types:
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Consistent edges
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This mode is used for patterns with well defined edges or to find
non deformed instances. It detects instances highly degraded
due to blur, noise, occlusion or varying illumination conditions.
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Thin structure
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This mode is used to locate patterns including particularly thin structures. It is robust against blur, noise, occlusion and illumination variation.
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Contrasting regions
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This mode is used for patterns with poorly defined edges or patterns exhibiting noise, blur, and random texture.
The contrasting regions pattern type is robust against blur, noise, illumination variation.
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These three pattern types allow EasyFind to maximize the accuracy and the speed of the processing, even in difficult cases.
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