MaxArea Property

Applies To
Vision Objects: ArcInspector, Blob, Contour, DefectFinder, LineInspector

Description
Defines the upper limit of detection for the an object. Blobs which exceed the MaxArea property value cannot be found.

Usage

VGet  Sequence.Object.MaxArea, var
VSet  Sequence.Object.MaxArea, value

Sequence

Name of a sequence or string variable containing a sequence name.

Object

Name of an object or string variable containing an object name. The object must exist in the specified sequence.

var

Long expression for the new value of the property.

value

Long expression for the new value of the property.

Values
1 - (the area of the search window)

Default: 100,000

Remarks
For Blob and DefectFinder objects, the MinArea and MaxArea Properties set a range for the Blob object detection. Blobs which exceed the MaxArea property value cannot be found. (i.e. the Found result is returned as “False”.)

For ArcInspector and LineInspector objects, the MinArea and MaxArea Properties set a range for the area of a defect. Defects which exceed the MaxArea property value cannot be found. (i.e. the Found result is returned as “False”.)

When a new Blob object is created, the range between the MinArea property and MaxArea property is quite large because the default values are set at 25 and 100,000 respectively. This means that in most situations the Blob object will return a Found result as “True” since the range for Blobs is so wide. In most applications it is useful to set a tighter range between the MinArea and MaxArea Properties but of course these values will vary from application to application. Set the MinArea and MaxArea Properties according to each application.

Do not set the range between MinArea and MaxArea too large. If the range is too large, it may result in false detection.

See Also
Area Result, Blob Object, Contour Object, DefectFinder Object, LineInspector Object, ArcInspector Object, MinArea Property, MinMaxArea Property