Example Image Pyramid - Revision history

Peter at 23:11, 17 January 2022

2022-01-17T23:11:16Z

Peter at 19:03, 12 July 2021

2021-07-12T19:03:42Z

← Older revision		Revision as of 19:03, 12 July 2021
Line 13:		Line 13:

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

	Concepts:		Concepts:
Line 24:		Line 24:
	<syntaxhighlight lang="java">		<syntaxhighlight lang="java">
	/**		/**
	* Demonstrates how to construct and display a {@link PyramidDiscrete}. Discrete pyramids require that		* Demonstrates how to construct and display a {@link PyramidDiscrete}. Discrete pyramids require that
	* each level has a relative scale with an integer ratio and is updated by sparsely sub-sampling. These		* each level has a relative scale with an integer ratio and is updated by sparsely sub-sampling. These
	* restrictions allows a very quick update across scale space.		* restrictions allows a very quick update across scale space.
	*		*
Line 48:		Line 48:
	pyramid.process(input);		pyramid.process(input);

	~~DiscretePyramidPanel~~ gui = new DiscretePyramidPanel();		var gui = new DiscretePyramidPanel<T>();
	gui.setPyramid(pyramid);		gui.setPyramid(pyramid);
	gui.render();		gui.render();
Line 63:		Line 63:
	BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));		BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));

	~~ExamplePyramidDiscrete<GrayF32>~~ app = new ExamplePyramidDiscrete<>(GrayF32.class);		var app = new ExamplePyramidDiscrete<>(GrayF32.class);
	// ~~ExamplePyramidDiscrete<GrayU8>~~ app = new ExamplePyramidDiscrete<>(GrayU8.class);		// var app = new ExamplePyramidDiscrete<>(GrayU8.class);

	app.process(image);		app.process(image);
Line 76:		Line 76:
	<syntaxhighlight lang="java">		<syntaxhighlight lang="java">
	/**		/**
	* Demonstrates how to construct and display a {@link PyramidFloat}. Float pyramids require only require		* Demonstrates how to construct and display a {@link PyramidFloat}. Float pyramids require only require
	* that each layer's scale be larger than the scale of the previous layer. Interpolation is used to allow		* that each layer's scale be larger than the scale of the previous layer. Interpolation is used to allow
	* sub-sampling at arbitrary scales. All of this additional flexibility comes at the cost of speed		* sub-sampling at arbitrary scales. All of this additional flexibility comes at the cost of speed
	* when compared to a {@link PyramidDiscrete}.		* when compared to a {@link PyramidDiscrete}.
	*		*
Line 128:		Line 128:
	BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));		BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));

	~~ExamplePyramidFloat<GrayF32>~~ app = new ExamplePyramidFloat<>(GrayF32.class);		var app = new ExamplePyramidFloat<>(GrayF32.class);
	// ~~ExamplePyramidFloat<GrayU8>~~ app = new ExamplePyramidFloat<>(GrayU8.class);		// var app = new ExamplePyramidFloat<>(GrayU8.class);

	app.standard();		app.standard();

Peter at 02:28, 22 December 2020

2020-12-22T02:28:54Z

← Older revision		Revision as of 02:28, 22 December 2020
Line 13:		Line 13:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.36/examples/src/main/java/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.37/examples/src/main/java/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.35/examples/src/main/java/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.37/examples/src/main/java/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]

	Concepts:		Concepts:
Line 35:		Line 35:
	Class<T> imageType;		Class<T> imageType;

	public ExamplePyramidDiscrete(Class<T> imageType) {		public ExamplePyramidDiscrete( Class<T> imageType ) {
	this.imageType = imageType;		this.imageType = imageType;
	}		}
Line 45:		Line 45:
	T input = ConvertBufferedImage.convertFromSingle(image, null, imageType);		T input = ConvertBufferedImage.convertFromSingle(image, null, imageType);
	PyramidDiscrete<T> pyramid = FactoryPyramid.discreteGaussian(		PyramidDiscrete<T> pyramid = FactoryPyramid.discreteGaussian(
	ConfigDiscreteLevels.levels(4),-1,2,true, ImageType.single(imageType));		ConfigDiscreteLevels.levels(4), -1, 2, true, ImageType.single(imageType));
	pyramid.process(input);		pyramid.process(input);

Line 52:		Line 52:
	gui.render();		gui.render();

	ShowImages.showWindow(gui,"Image Pyramid");		ShowImages.showWindow(gui, "Image Pyramid");

	// To get an image at any of the scales simply call this get function		// To get an image at any of the scales simply call this get function
	T imageAtScale = pyramid.getLayer(1);		T imageAtScale = pyramid.getLayer(1);

	ShowImages.showWindow(ConvertBufferedImage.convertTo(imageAtScale,null,true),"Image at layer 1");		ShowImages.showWindow(ConvertBufferedImage.convertTo(imageAtScale, null, true), "Image at layer 1");
	}		}

Line 90:		Line 90:
	PyramidFloat<T> pyramid;		PyramidFloat<T> pyramid;

	public ExamplePyramidFloat(Class<T> imageType) {		public ExamplePyramidFloat( Class<T> imageType ) {
	this.imageType = imageType;		this.imageType = imageType;
	}		}
Line 100:		Line 100:
	// Scale factory for each layer can be any floating point value which is larger than		// Scale factory for each layer can be any floating point value which is larger than
	// the previous layer's scale.		// the previous layer's scale.
	double ~~scales~~[] = new double[]{1,1.5,2,2.5,3,5,8,15};		double[] scales = new double[]{1, 1.5, 2, 2.5, 3, 5, 8, 15};
	// the amount of blur which is applied to each layer in the pyramid after the previous layer has been sampled		// the amount of blur which is applied to each layer in the pyramid after the previous layer has been sampled
	double ~~sigmas~~[] = new double[]{1,1,1,1,1,1,1,1};		double[] sigmas = new double[]{1, 1, 1, 1, 1, 1, 1, 1};
	pyramid = FactoryPyramid.floatGaussian(scales,sigmas,imageType);		pyramid = FactoryPyramid.floatGaussian(scales, sigmas, imageType);
	}		}

Line 117:		Line 117:
	gui.render();		gui.render();

	ShowImages.showWindow(gui,"Image Pyramid Float");		ShowImages.showWindow(gui, "Image Pyramid Float");

	// To get an image at any of the scales simply call this get function		// To get an image at any of the scales simply call this get function
	T imageAtScale = pyramid.getLayer(1);		T imageAtScale = pyramid.getLayer(1);

	ShowImages.showWindow(ConvertBufferedImage.convertTo(imageAtScale,null,true),"Image at layer 1");		ShowImages.showWindow(ConvertBufferedImage.convertTo(imageAtScale, null, true), "Image at layer 1");
	}		}


	public static void main( String[] args ) {		public static void main( String[] args ) {

Peter at 05:15, 18 May 2020

2020-05-18T05:15:46Z

← Older revision		Revision as of 05:15, 18 May 2020
Line 13:		Line 13:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.36/examples/src/main/~~javaboofcv~~/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.36/examples/src/main/java/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.35/examples/src/main/java/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.35/examples/src/main/java/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]

Peter at 05:15, 18 May 2020

2020-05-18T05:15:18Z

← Older revision		Revision as of 05:15, 18 May 2020
Line 13:		Line 13:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.35/examples/src/~~boofcv~~/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.36/examples/src/main/javaboofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.35/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.35/examples/src/main/java/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]

	Concepts:		Concepts:
Line 34:		Line 34:
	// specifies the image type		// specifies the image type
	Class<T> imageType;		Class<T> imageType;
	~~// The pyramid data structure~~
	~~PyramidDiscrete<T> pyramid;~~

	public ExamplePyramidDiscrete(Class<T> imageType) {		public ExamplePyramidDiscrete(Class<T> imageType) {
	this.imageType = imageType;		this.imageType = imageType;
	}

	/**
	* Creates a fairly standard pyramid and updater.
	*/
	~~public void standard() {~~
	~~// Each level in the pyramid must have a ratio with the previously layer that is an integer value~~
	~~pyramid = FactoryPyramid.discreteGaussian(new int[]{1,2,4,8},-1,2,true, ImageType.single(imageType));~~
	}

	/**
	* Creates a more unusual pyramid and updater.
	*/
	~~public void unusual() {~~
	~~// Note that the first level does not have to be one~~
	~~pyramid = FactoryPyramid.discreteGaussian(new int[]{2,6},-1,2,true, ImageType.single(imageType));~~

	~~// Other kernels can also be used besides Gaussian~~
	~~Kernel1D kernel;~~
	~~if(GeneralizedImageOps.isFloatingPoint(imageType) ) {~~
	~~kernel = FactoryKernel.table1D_F32(2,true);~~
	~~} else {~~
	~~kernel = FactoryKernel.table1D_S32(2);~~
	}
	}		}

Line 70:		Line 44:
	public void process( BufferedImage image ) {		public void process( BufferedImage image ) {
	T input = ConvertBufferedImage.convertFromSingle(image, null, imageType);		T input = ConvertBufferedImage.convertFromSingle(image, null, imageType);
			PyramidDiscrete<T> pyramid = FactoryPyramid.discreteGaussian(
			ConfigDiscreteLevels.levels(4),-1,2,true, ImageType.single(imageType));
	pyramid.process(input);		pyramid.process(input);

Line 90:		Line 66:
	// ExamplePyramidDiscrete<GrayU8> app = new ExamplePyramidDiscrete<>(GrayU8.class);		// ExamplePyramidDiscrete<GrayU8> app = new ExamplePyramidDiscrete<>(GrayU8.class);

	~~app.standard();~~
	~~// app.unusual();~~
	app.process(image);		app.process(image);
	}		}

Peter at 00:53, 24 December 2019

2019-12-24T00:53:45Z

← Older revision		Revision as of 00:53, 24 December 2019
Line 13:		Line 13:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.27/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.35/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.27/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.35/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]

	Concepts:		Concepts:
Line 61:		Line 61:
	kernel = FactoryKernel.table1D_F32(2,true);		kernel = FactoryKernel.table1D_F32(2,true);
	} else {		} else {
	kernel = FactoryKernel.~~table1D_I32~~(2);		kernel = FactoryKernel.table1D_S32(2);
	}		}
	}		}

Peter at 16:03, 17 August 2017

2017-08-17T16:03:10Z

← Older revision		Revision as of 16:03, 17 August 2017
Line 13:		Line 13:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.25/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.27/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.25/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.27/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]

	Concepts:		Concepts:
Line 20:		Line 20:
	* Discrete Vs. Float pyramids		* Discrete Vs. Float pyramids
	* Image scaling		* Image scaling

	~~Relevant Applets:~~
	* [[Applet_Pyramid_Discrete\| Discrete Pyramid]]
	* [[Applet_Pyramid_Float\| Float Pyramid]]

	= Image Pyramid Discrete =		= Image Pyramid Discrete =
Line 34:		Line 30:
	* @author Peter Abeles		* @author Peter Abeles
	*/		*/
	public class ExamplePyramidDiscrete<T extends ImageGray> {		public class ExamplePyramidDiscrete<T extends ImageGray<T>> {

	// specifies the image type		// specifies the image type
Line 50:		Line 46:
	public void standard() {		public void standard() {
	// Each level in the pyramid must have a ratio with the previously layer that is an integer value		// Each level in the pyramid must have a ratio with the previously layer that is an integer value
	pyramid = FactoryPyramid.discreteGaussian(new int[]{1,2,4,8},-1,2,true,imageType);		pyramid = FactoryPyramid.discreteGaussian(new int[]{1,2,4,8},-1,2,true, ImageType.single(imageType));
	}		}

Line 58:		Line 54:
	public void unusual() {		public void unusual() {
	// Note that the first level does not have to be one		// Note that the first level does not have to be one
	pyramid = FactoryPyramid.discreteGaussian(new int[]{2,6},-1,2,true,imageType);		pyramid = FactoryPyramid.discreteGaussian(new int[]{2,6},-1,2,true, ImageType.single(imageType));

	// Other kernels can also be used besides Gaussian		// Other kernels can also be used besides Gaussian
Line 91:		Line 87:
	BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));		BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));

	ExamplePyramidDiscrete<GrayF32> app = new ExamplePyramidDiscrete<~~GrayF32~~>(GrayF32.class);		ExamplePyramidDiscrete<GrayF32> app = new ExamplePyramidDiscrete<>(GrayF32.class);
	// ExamplePyramidDiscrete<GrayU8> app = new ExamplePyramidDiscrete<~~GrayU8~~>(GrayU8.class);		// ExamplePyramidDiscrete<GrayU8> app = new ExamplePyramidDiscrete<>(GrayU8.class);

	app.standard();		app.standard();
Line 113:		Line 109:
	* @author Peter Abeles		* @author Peter Abeles
	*/		*/
	public class ExamplePyramidFloat<T extends ImageGray> {		public class ExamplePyramidFloat<T extends ImageGray<T>> {

	// specifies the image type		// specifies the image type

Peter at 23:49, 1 December 2016

2016-12-01T23:49:49Z

← Older revision		Revision as of 23:49, 1 December 2016
Line 13:		Line 13:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.23/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.25/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.23/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.25/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]

	Concepts:		Concepts:
Line 143:		Line 143:
	pyramid.process(input);		pyramid.process(input);

	ImagePyramidPanel<T> gui = new ImagePyramidPanel<T>();		ImagePyramidPanel<T> gui = new ImagePyramidPanel<>();
	gui.set(pyramid, true);		gui.set(pyramid, true);
	gui.render();		gui.render();
Line 159:		Line 159:
	BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));		BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));

	ExamplePyramidFloat<GrayF32> app = new ExamplePyramidFloat<~~GrayF32~~>(GrayF32.class);		ExamplePyramidFloat<GrayF32> app = new ExamplePyramidFloat<>(GrayF32.class);
	// ExamplePyramidFloat<GrayU8> app = new ExamplePyramidFloat<~~GrayU8~~>(GrayU8.class);		// ExamplePyramidFloat<GrayU8> app = new ExamplePyramidFloat<>(GrayU8.class);

	app.standard();		app.standard();

Peter at 05:02, 28 March 2016

2016-03-28T05:02:32Z

← Older revision		Revision as of 05:02, 28 March 2016
Line 13:		Line 13:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.20/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.23/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.20/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.23/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]

	Concepts:		Concepts:
Line 34:		Line 34:
	* @author Peter Abeles		* @author Peter Abeles
	*/		*/
	public class ExamplePyramidDiscrete<T extends ~~ImageSingleBand~~> {		public class ExamplePyramidDiscrete<T extends ImageGray> {

	// specifies the image type		// specifies the image type
Line 91:		Line 91:
	BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));		BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));

	ExamplePyramidDiscrete<~~ImageFloat32~~> app = new ExamplePyramidDiscrete<~~ImageFloat32~~>(~~ImageFloat32~~.class);		ExamplePyramidDiscrete<GrayF32> app = new ExamplePyramidDiscrete<GrayF32>(GrayF32.class);
	// ExamplePyramidDiscrete<~~ImageUInt8~~> app = new ExamplePyramidDiscrete<~~ImageUInt8~~>(~~ImageUInt8~~.class);		// ExamplePyramidDiscrete<GrayU8> app = new ExamplePyramidDiscrete<GrayU8>(GrayU8.class);

	app.standard();		app.standard();
Line 113:		Line 113:
	* @author Peter Abeles		* @author Peter Abeles
	*/		*/
	public class ExamplePyramidFloat<T extends ~~ImageSingleBand~~> {		public class ExamplePyramidFloat<T extends ImageGray> {

	// specifies the image type		// specifies the image type
Line 159:		Line 159:
	BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));		BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));

	ExamplePyramidFloat<~~ImageFloat32~~> app = new ExamplePyramidFloat<~~ImageFloat32~~>(~~ImageFloat32~~.class);		ExamplePyramidFloat<GrayF32> app = new ExamplePyramidFloat<GrayF32>(GrayF32.class);
	// ExamplePyramidFloat<~~ImageUInt8~~> app = new ExamplePyramidFloat<~~ImageUInt8~~>(~~ImageUInt8~~.class);		// ExamplePyramidFloat<GrayU8> app = new ExamplePyramidFloat<GrayU8>(GrayU8.class);

	app.standard();		app.standard();

Peter at 15:29, 9 November 2015

2015-11-09T15:29:51Z

← Older revision		Revision as of 15:29, 9 November 2015
Line 13:		Line 13:

	Example Code:		Example Code:
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.16/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.20/examples/src/boofcv/examples/imageprocessing/ExamplePyramidDiscrete.java ExamplePyramidDiscrete.java ]
	* [https://github.com/lessthanoptimal/BoofCV/blob/v0.16/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]		* [https://github.com/lessthanoptimal/BoofCV/blob/v0.20/examples/src/boofcv/examples/imageprocessing/ExamplePyramidFloat.java ExamplePyramidFloat.java ]

	Concepts:		Concepts:
Line 89:		Line 89:

	public static void main( String[] args ) {		public static void main( String[] args ) {
	BufferedImage image = UtilImageIO.loadImage("~~../data/evaluation/~~standard/barbara.~~png~~");		BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));

	ExamplePyramidDiscrete<ImageFloat32> app = new ExamplePyramidDiscrete<ImageFloat32>(ImageFloat32.class);		ExamplePyramidDiscrete<ImageFloat32> app = new ExamplePyramidDiscrete<ImageFloat32>(ImageFloat32.class);
Line 157:		Line 157:

	public static void main( String[] args ) {		public static void main( String[] args ) {
	BufferedImage image = UtilImageIO.loadImage("~~../data/evaluation/~~standard/barbara.~~png~~");		BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("standard/barbara.jpg"));

	ExamplePyramidFloat<ImageFloat32> app = new ExamplePyramidFloat<ImageFloat32>(ImageFloat32.class);		ExamplePyramidFloat<ImageFloat32> app = new ExamplePyramidFloat<ImageFloat32>(ImageFloat32.class);

← Older revision		Revision as of 23:11, 17 January 2022
Line 6:		Line 6:
	</center>		</center>

	[http://en.wikipedia.org/wiki/Pyramid_%28image_processing Image pyramids] are a common way to represent multi-resolution image information. In an image pyramid, upper layers are lower resolution versions of the lower layers. BoofCV provides two types of image pyramids built in; PyramidDiscrete and PyramidFloat. PyramidDiscrete only allows the ratio between adjacent to have positive integer values, while PyramidFloat allows any arbitrary positive value. Discrete pyramids are much faster than float pyramids, but much more restrictive.		[http://en.wikipedia.org/wiki/Pyramid_%28image_processing Image pyramids] are a common way to represent multi-resolution image information. In an image pyramid, upper layers are lower resolution versions of the lower layers. BoofCV provides two types of image pyramids built in; PyramidDiscrete and PyramidFloat. PyramidDiscrete only allows the ratio between adjacent to have positive integer values, while PyramidFloat allows any arbitrary positive value. Discrete pyramids are much faster than float pyramids, but much more restrictive.

	Inside of BoofCV several algorithms make use of these two types of pyramids. The KLT feature tracker uses a discrete pyramid and is the fastest feature tracker. Pyramid based scale space feature detectors use the float pyramid.		Inside of BoofCV several algorithms make use of these two types of pyramids. The KLT feature tracker uses a discrete pyramid and is the fastest feature tracker. Pyramid based scale space feature detectors use the float pyramid.

	Two code examples are provided below which demonstrate how to construct and visualize each type of pyramid.		Two code examples are provided below which demonstrate how to construct and visualize each type of pyramid.

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

	Concepts:		Concepts:
Line 61:		Line 61:

	public static void main( String[] args ) {		public static void main( String[] args ) {
	BufferedImage image = UtilImageIO.~~loadImage~~(UtilIO.pathExample("standard/barbara.jpg"));		BufferedImage image = UtilImageIO.loadImageNotNull(UtilIO.pathExample("standard/barbara.jpg"));

	var app = new ExamplePyramidDiscrete<>(GrayF32.class);		var app = new ExamplePyramidDiscrete<>(GrayF32.class);
Line 126:		Line 126:

	public static void main( String[] args ) {		public static void main( String[] args ) {
	BufferedImage image = UtilImageIO.~~loadImage~~(UtilIO.pathExample("standard/barbara.jpg"));		BufferedImage image = UtilImageIO.loadImageNotNull(UtilIO.pathExample("standard/barbara.jpg"));

	var app = new ExamplePyramidFloat<>(GrayF32.class);		var app = new ExamplePyramidFloat<>(GrayF32.class);