QrDetector - Extended-Object-Detection-ROS/wiki_english GitHub Wiki

Qr

An attribute that recognizes QR codes using OpenCV. __It is recommended to use QrZbarDetector instead, because this one is able to detect only one code in the image (in the case of several codes in the image, the work is not predictable), does not work well with repetitions and distortions. Don't work with OpenCV 3.2.0 (default in Melodic)

Modes Accuracy assessment 3D-translation 3D-rotation Contour extraction Additional info
D - ❌ ❌ ✔ <Attribute_name>:info

1. Modes

1.1. Detect

Returns areas with a QR code. Able to recognize only one code in the image.

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 "Qr") attribute type
  • Weight (double, default: 1) attribute weight
  • Probability (double, default: 0.75) not used in this attribute
  • Contour (bool, default: true) returns the contour of the attribute if true

2.2. Special parameters

None

2.3. Example

<?xml version="1.0" ?>

<AttributeLib>
    
    <Attribute Name="QrcodeCV" Type="Qr"/>
    
</AttributeLib>

<SimpleObjectBase>  
    
    <SimpleObject Name="QRcode" ID="70">                   
        <Attribute Type="Detect">QrcodeCV</Attribute>        
    </SimpleObject>
    
</SimpleObjectBase>

qr code example

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