Difference between revisions of "Example Render Micro QR Code"

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(Created page with "<center> <gallery widths=400px heights=400px> File:Example_render_microqr.png | The Micro QR Code which is rendered in this example. </gallery> </center> This example shows h...")
 
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Example Code:
Example Code:
* [https://github.com/lessthanoptimal/BoofCV/blob/v0.40/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderMicroQrCode.java ExampleRenderMicroQrCode.java]
* [https://github.com/lessthanoptimal/BoofCV/blob/v0.40.1/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderMicroQrCode.java ExampleRenderMicroQrCode.java]


Concepts:
Concepts:
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// NOTE: The final function you call must be fixate(), that's how it knows it's done
// NOTE: The final function you call must be fixate(), that's how it knows it's done


// FiducialImageEngine is an interface for rending to images. You can also render to PDF and other formats.
// Render the QR as an image. It's also possible to render as a PDF or your own custom format
var render = new FiducialImageEngine();
GrayU8 rendered = MicroQrCodeGenerator.renderImage(/* pixel per module */ 10, /* border modules*/ 1, qr);
render.configure(/* border */ 10, /* width */ 500);
 
// Render the marker after configuring the generator
new MicroQrCodeGenerator().setMarkerWidth(500).setRender(render).render(qr);


// Convert it to a BufferedImage for display purposes
// Convert it to a BufferedImage for display purposes
BufferedImage image = ConvertBufferedImage.convertTo(render.getGray(), null);
BufferedImage output = ConvertBufferedImage.convertTo(rendered, null);


// You can also save it to disk by uncommenting the line below
// You can also save it to disk by uncommenting the line below
// UtilImageIO.saveImage(image, "microqr.png");
// UtilImageIO.saveImage(output, "microqr.png");


// Display the image
// Display the image
ShowImages.showWindow(image, "Rendered Micro QR Code", true);
ShowImages.showWindow(output, "Rendered Micro QR Code", true);
}
}
}
}
</syntaxhighlight>
</syntaxhighlight>

Latest revision as of 12:00, 24 January 2022

  • The Micro QR Code which is rendered in this example.

This example shows how a Micro QR Codes can be rendered into an image. Its easy to adapt the approach here for just about any file format, e.g. PDF.

Example Code:

Concepts:

  • Fiducials
  • Micro QR Codes

Relevant Examples/Tutorials:

Example Code

/**
 * A simple API is provided for creating your own Micro QR Code. Used extensively in BoofCV for testing purposes.
 * It's also easy to extending the rendering tools to support other file formats.
 *
 * @author Peter Abeles
 * @see boofcv.alg.fiducial.microqr.MicroQrCodeGenerator
 */
public class ExampleRenderMicroQrCode {
	public static void main( String[] args ) {
		// Uses a flow pattern to specify the QR Code. You can control all aspects of the Micro QR
		// like specifying the version, mask, and message types or let it select all of that for you.
		MicroQrCode qr = new MicroQrCodeEncoder().
				setError(MicroQrCode.ErrorLevel.L).
				addAutomatic("Test ん鞠").fixate();
		// NOTE: The final function you call must be fixate(), that's how it knows it's done

		// Render the QR as an image. It's also possible to render as a PDF or your own custom format
		GrayU8 rendered = MicroQrCodeGenerator.renderImage(/* pixel per module */ 10, /* border modules*/ 1, qr);

		// Convert it to a BufferedImage for display purposes
		BufferedImage output = ConvertBufferedImage.convertTo(rendered, null);

		// You can also save it to disk by uncommenting the line below
//		UtilImageIO.saveImage(output, "microqr.png");

		// Display the image
		ShowImages.showWindow(output, "Rendered Micro QR Code", true);
	}
}
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