Peter at 19:00, 24 January 2022

2022-01-24T19:00:32Z

← Older revision		Revision as of 19:00, 24 January 2022
Line 8:		Line 8:

	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:
Line 37:		Line 37:
	// 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>

Peter: Created page with " File:Example_render_microqr.png | The Micro QR Code which is rendered in this example. This example shows h..."

2022-01-17T22:35:36Z

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..."

New page

<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 how a [https://en.wikipedia.org/wiki/QR_code#Micro_QR_code 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:
* [https://github.com/lessthanoptimal/BoofCV/blob/v0.40/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderMicroQrCode.java ExampleRenderMicroQrCode.java]

Concepts:
* Fiducials
* Micro QR Codes

Relevant Examples/Tutorials:
* [[Tutorial_QRCodes|Tutorial QR Codes]]
* [[Example_Detect_Micro_QR_Code|Detecting Micro QR Codes]]

= Example Code =

<syntaxhighlight lang="java">
/**
* 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

// FiducialImageEngine is an interface for rending to images. You can also render to PDF and other formats.
var render = new FiducialImageEngine();
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
BufferedImage image = ConvertBufferedImage.convertTo(render.getGray(), null);

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

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

Example Render Micro QR Code - Revision history

Peter at 19:00, 24 January 2022

Peter: Created page with " File:Example_render_microqr.png | The Micro QR Code which is rendered in this example. This example shows h..."