Example Render QR Code - Revision history

Peter at 22:45, 17 January 2022

2022-01-17T22:45:49Z

← Older revision		Revision as of 22:45, 17 January 2022
Line 8:		Line 8:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.38/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderQrCode.java ExampleRenderQrCode.java]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.40/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderQrCode.java ExampleRenderQrCode.java]

	Concepts:		Concepts:
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	setError(QrCode.ErrorLevel.M).		setError(QrCode.ErrorLevel.M).
	addAutomatic("This is a Test ん鞠").fixate();		addAutomatic("This is a Test ん鞠").fixate();
	// NOTE: The final function you call must be fixate() that's how it knows ~~its~~ done		// NOTE: The final function you call must be fixate(), that's how it knows it's done

	// QrCodeGenerator is the base class with all the logic and the children tell it how to		// QrCodeGenerator is the base class with all the logic and the children tell it how to
	// write in a specific format. QrCodeGeneratorImage is included with BoofCV and is used		// write in a specific format. QrCodeGeneratorImage is included with BoofCV and is used
	// to ~~creates~~ images		// to create images
	~~QrCodeGeneratorImage~~ render = new QrCodeGeneratorImage(20);		var render = new QrCodeGeneratorImage(/* pixel per module */ 20);

	render.render(qr);		render.render(qr);
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	// Convert it to a BufferedImage for display purposes		// Convert it to a BufferedImage for display purposes
	BufferedImage image = ConvertBufferedImage.convertTo(render.getGray(), null);		BufferedImage image = ConvertBufferedImage.convertTo(render.getGray(), null);
	~~ShowImages.showWindow(image, "Rendered QR Code", true);~~

	// 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,"qrcode.png");		// UtilImageIO.saveImage(image, "qrcode.png");

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

Peter at 18:06, 12 July 2021

2021-07-12T18:06:19Z

← Older revision		Revision as of 18:06, 12 July 2021
Line 8:		Line 8:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.37/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderQrCode.java ExampleRenderQrCode.java]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.38/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderQrCode.java ExampleRenderQrCode.java]

	Concepts:		Concepts:

Peter at 02:03, 22 December 2020

2020-12-22T02:03:47Z

← Older revision		Revision as of 02:03, 22 December 2020
Line 8:		Line 8:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.30/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderQrCode.java ExampleRenderQrCode.java]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.37/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderQrCode.java ExampleRenderQrCode.java]

	Concepts:		Concepts:
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	* It's also easy to extending the rendering tools to support other file formats.		* It's also easy to extending the rendering tools to support other file formats.
	*		*
			* @author Peter Abeles
	* @see boofcv.alg.fiducial.qrcode.QrCodeGenerator		* @see boofcv.alg.fiducial.qrcode.QrCodeGenerator
	*
	* @author Peter Abeles
	*/		*/
	public class ExampleRenderQrCode		public class ExampleRenderQrCode {
	{		public static void main( String[] args ) {
	public static void main(String[] args) {

	// Uses a flow pattern to specify the QR Code. You can control all aspects of the QR		// Uses a flow pattern to specify the QR Code. You can control all aspects of the QR
	// like specifying the version, mask, and message types or let it select all of that for you.		// like specifying the version, mask, and message types or let it select all of that for you.
Line 51:		Line 48:

	// Convert it to a BufferedImage for display purposes		// Convert it to a BufferedImage for display purposes
	BufferedImage image = ConvertBufferedImage.convertTo(render.getGray(),null);		BufferedImage image = ConvertBufferedImage.convertTo(render.getGray(), null);
	ShowImages.showWindow(image,"Rendered QR Code", true);		ShowImages.showWindow(image, "Rendered QR Code", true);

	// You can also save it to disk by uncommenting the line below		// You can also save it to disk by uncommenting the line below

Peter at 04:08, 22 May 2018

2018-05-22T04:08:49Z

← Older revision		Revision as of 04:08, 22 May 2018
Line 8:		Line 8:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.28/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderQrCode.java ExampleRenderQrCode.java]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.30/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderQrCode.java ExampleRenderQrCode.java]

	Concepts:		Concepts:
Line 56:		Line 56:
	// 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,"qrcode.png");		// UtilImageIO.saveImage(image,"qrcode.png");

	~~// WARNING! This rendered image lacks the white border which is required to be a compliant~~
	~~// QR Code. As of this writing BoofCV's implementation might not be able to handle~~
	~~// this image unless you add a white border.~~
	}		}
	}		}
	</syntaxhighlight>		</syntaxhighlight>

Peter at 00:10, 21 January 2018

2018-01-21T00:10:08Z

← Older revision		Revision as of 00:10, 21 January 2018
Line 19:		Line 19:

	Relevant Videos:		Relevant Videos:
	* [https://youtu.be/TGg-xgTyaU8?t=402 ~~Youtube~~ Document Creator]		* [https://youtu.be/TGg-xgTyaU8?t=402 YouTube Document Creator]

	= Example Code =		= Example Code =

Peter at 00:09, 21 January 2018

2018-01-21T00:09:32Z

← Older revision		Revision as of 00:09, 21 January 2018
Line 15:		Line 15:

	Relevant Examples/Tutorials:		Relevant Examples/Tutorials:
	* [[~~Tutorial_Fiducials~~\|Tutorial ~~Fiducials~~]]		* [[Tutorial_QRCodes\|Tutorial QR Codes]]
	* [[Example_Detect_QR_Code\|Detecting QR Codes]]		* [[Example_Detect_QR_Code\|Detecting QR Codes]]

Peter at 00:08, 21 January 2018

2018-01-21T00:08:51Z

← Older revision		Revision as of 00:08, 21 January 2018
Line 17:		Line 17:
	* [[Tutorial_Fiducials\|Tutorial Fiducials]]		* [[Tutorial_Fiducials\|Tutorial Fiducials]]
	* [[Example_Detect_QR_Code\|Detecting QR Codes]]		* [[Example_Detect_QR_Code\|Detecting QR Codes]]

			Relevant Videos:
			* [https://youtu.be/TGg-xgTyaU8?t=402 Youtube Document Creator]

	= Example Code =		= Example Code =

Peter: Created page with " file:example_rendered_qrcode.png | The QR Code which this example will render. A white border needs to be added to be fully compl..."

2018-01-20T06:03:58Z

Created page with "<center> <gallery widths=400px heights=400px> file:example_rendered_qrcode.png | The QR Code which this example will render. A white border needs to be added to be fully compl..."

New page

<center>
<gallery widths=400px heights=400px>
file:example_rendered_qrcode.png | The QR Code which this example will render. A white border needs to be added to be fully compliant.
</gallery>
</center>

This example shows how a [https://en.wikipedia.org/wiki/QR_code QR Codes] can be rendered into an image. Its easy to adapt the approach here for just about any file format.

Example Code:
* [https://github.com/lessthanoptimal/BoofCV/blob/v0.28/examples/src/main/java/boofcv/examples/fiducial/ExampleRenderQrCode.java ExampleRenderQrCode.java]

Concepts:
* Fiducials
* QR Codes

Relevant Examples/Tutorials:
* [[Tutorial_Fiducials|Tutorial Fiducials]]
* [[Example_Detect_QR_Code|Detecting QR Codes]]

= Example Code =

<syntaxhighlight lang="java">
/**
* A simple API is provided for creating your own QR Codes. Used extensively in BoofCV for testing purposes.
* It's also easy to extending the rendering tools to support other file formats.
*
* @see boofcv.alg.fiducial.qrcode.QrCodeGenerator
*
* @author Peter Abeles
*/
public class ExampleRenderQrCode
{
public static void main(String[] args) {

// Uses a flow pattern to specify the QR Code. You can control all aspects of the QR
// like specifying the version, mask, and message types or let it select all of that for you.
QrCode qr = new QrCodeEncoder().
setError(QrCode.ErrorLevel.M).
addAutomatic("This is a Test ん鞠").fixate();
// NOTE: The final function you call must be fixate() that's how it knows its done

// QrCodeGenerator is the base class with all the logic and the children tell it how to
// write in a specific format. QrCodeGeneratorImage is included with BoofCV and is used
// to creates images
QrCodeGeneratorImage render = new QrCodeGeneratorImage(20);

render.render(qr);

// Convert it to a BufferedImage for display purposes
BufferedImage image = ConvertBufferedImage.convertTo(render.getGray(),null);
ShowImages.showWindow(image,"Rendered QR Code", true);

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

// WARNING! This rendered image lacks the white border which is required to be a compliant
// QR Code. As of this writing BoofCV's implementation might not be able to handle
// this image unless you add a white border.
}
}
</syntaxhighlight>