Difference between revisions of "Example Color Space"
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Example of how to convert between different color spaces in BoofCV. Either the whole image can be | Example of how to convert between different color spaces in BoofCV. Either the whole image can be converted or individual values. | ||
Example Code: | Example Code: | ||
* [https://github.com/lessthanoptimal/BoofCV/blob/v0. | * [https://github.com/lessthanoptimal/BoofCV/blob/v0.33/examples/src/main/java/boofcv/examples/imageprocessing/ExampleColorSpace.java ExampleColorSpace.java] | ||
Concepts: | Concepts: | ||
* Color space | * Color space | ||
Relevant | Relevant Examples: | ||
* [[ | * [[Example_Color_Segmentation| Color Segmentation]] | ||
= Example Code = | = Example Code = | ||
Line 22: | Line 22: | ||
public static void main( String args[] ) { | public static void main( String args[] ) { | ||
BufferedImage image = UtilImageIO.loadImage(" | BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("sunflowers.jpg")); | ||
// Convert input image into a BoofCV RGB image | // Convert input image into a BoofCV RGB image | ||
Planar<GrayF32> rgb = ConvertBufferedImage.convertFromPlanar(image, null,true, GrayF32.class); | |||
//---- convert RGB image into different color formats | //---- convert RGB image into different color formats | ||
Planar<GrayF32> hsv = rgb.createSameShape(); | |||
ColorHsv. | ColorHsv.rgbToHsv(rgb, hsv); | ||
Planar<GrayF32> yuv = rgb.createSameShape(); | |||
ColorYuv. | ColorYuv.yuvToRgb(rgb, yuv); | ||
//---- Convert individual pixels into different formats | //---- Convert individual pixels into different formats |
Revision as of 06:57, 15 March 2019
Example of how to convert between different color spaces in BoofCV. Either the whole image can be converted or individual values.
Example Code:
Concepts:
- Color space
Relevant Examples:
Example Code
/**
* Simple demonstration for converting between color spaces in BoofCV. Currently RGB, YUV, HSV, and YCbCr are
* supported.
*
* @author Peter Abeles
*/
public class ExampleColorSpace {
public static void main( String args[] ) {
BufferedImage image = UtilImageIO.loadImage(UtilIO.pathExample("sunflowers.jpg"));
// Convert input image into a BoofCV RGB image
Planar<GrayF32> rgb = ConvertBufferedImage.convertFromPlanar(image, null,true, GrayF32.class);
//---- convert RGB image into different color formats
Planar<GrayF32> hsv = rgb.createSameShape();
ColorHsv.rgbToHsv(rgb, hsv);
Planar<GrayF32> yuv = rgb.createSameShape();
ColorYuv.yuvToRgb(rgb, yuv);
//---- Convert individual pixels into different formats
float[] pixelHsv = new float[3];
ColorHsv.rgbToHsv(10,50.6f,120,pixelHsv);
System.out.printf("Found RGB->HSV = %5.2f %5.3f %5.1f\n",pixelHsv[0],pixelHsv[1],pixelHsv[2]);
float[] pixelRgb = new float[3];
ColorHsv.hsvToRgb(pixelHsv[0],pixelHsv[1],pixelHsv[2],pixelRgb);
System.out.printf("Found HSV->RGB = %5.1f %5.1f %5.1f expected 10 50.6 120\n",
pixelRgb[0],pixelRgb[1],pixelRgb[2]);
float[] pixelYuv = new float[3];
ColorYuv.rgbToYuv(10,50.6f,120,pixelYuv);
System.out.printf("Found RGB->YUV = %5.1f %5.1f %5.1f\n",pixelYuv[0],pixelYuv[1],pixelYuv[2]);
ColorYuv.yuvToRgb(pixelYuv[0],pixelYuv[1],pixelYuv[2],pixelRgb);
System.out.printf("Found YUV->RGB = %5.1f %5.1f %5.1f expected 10 50.6 120\n",
pixelRgb[0],pixelRgb[1],pixelRgb[2]);
}
}