Epson 5 AngleRange Property

AngleRange Property

AngleRange Property

Applies To

Vision Objects: Correlation, Geometric

Description

Specifies the range within which to train a series of rotated models.

Usage

VGet Sequence.Object.AngleRange, var

VSet Sequence.Object.AngleRange, 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 Integer variable that will contain the value of the property.

value Integer expression for the new value of the property.

Values

Integer number in degrees from 0 - 180

Default: 180

Remarks

Before reading anything else about the AngleRange property it should be noted that the Correlation Model

must be taught after a new value for the AngleRange property is set in order for those settings to take affect.

If you teach a Correlation Model, then later set the AngleRange property to a new value, and then try to run

that Correlation object, it will not search with the new angle range. You must re-teach the Correlation

Model with the AngleEnable property set to True, and with the new value for the AngleRange property in

order for Correlation search with angle to use the new AngleRange property value. You must also have the

proper settings for the AngleMaxIncrement property prior to teaching the new Model as well.

)

NOTE

The AngleRange property is must be set before teaching the model. This value specifies the range within

which to train a series of rotated models. For example, if the AngleRange property is set to 5, then when

the model is trained, a set of models is actually trained within +/- 5 degrees of the current model position.

These models are then used when a correlation search with angle is specified.

It should be noted that using correlation with angle will generally cause the correlation time to increase

significantly. This is why correlation with angle is normally used for small angle increments only. The

Polar object however, is normally very fast and can be used in conjunction with the Correlation object for a

powerful and fast combination. (See the sections on Correlation or Polar Searching in the Vision Guide

Manual for more information.)

Specify a small value for the setting. If the value is large, the detection time gets longer and may result in

false detection.