HoughAttribue

Hough Attribute

An attribute that implements recognition by the Hough transform. At the moment recognition of line and circle.

Modes	Accuracy assessment	3D-translation	3D-rotation	Contour extraction	Additional info
D	-	❌	❌	❌	-

1. Modes

1.1. Detect

Finds areas with lines or circles.

1.2. Check

Not implemented

1.3. Extract

Not implemented

2. XML-description

2.1. Common parameters

Name (string, must be set) attribute unique name
Type (string, must be "Hough") attribute type
Weight (double, default: 1) attribute weight
Probability (double, default: 0.75) not used in that attribute
Contour (bool, default: true) not used in that attribute

2.2. Special parameters

HoughType (int, default: 0) Hough transform type, 0 for circles and 1 for lines.
dp (double, default: 1) Special settings for circle recognition. See below.
md (double, default: 10) Special settings for circle recognition. See below.
p1 (double, default: 200) Special settings for circle recognition. See below.
p2 (double, default: 100) Special settings for circle recognition. See below.
mr (double, default: 0) Special settings for circle recognition. See below.
Mr (double, default: 0) Special settings for circle recognition. See below.

To obtain special parameters for circle recognition, it is recommended to use the utility hough_circle_params_collector.

2.3. Example

<AttributeLib>

    <Attribute Name="HoughCircle" Type="Hough" HoughType="0" dp="1" md="10" p1="142" p2="30" mr="0" Mr="0"/>

</AttributeLib>

<SimpleObjectBase>  
    
    <SimpleObject Name="Circle" ID="20">              
        <Attribute Type="Detect">HoughCircle</Attribute>            
    </SimpleObject>  
    
</SimpleObjectBase>