Peter at 03:25, 9 October 2021

2021-10-09T03:25:28Z

← Older revision		Revision as of 03:25, 9 October 2021
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Peter: Created page with " File:Example_simulate_motion_blur_01.jpg File:Example_simulate_motion_blur_02.jpg
2021-10-09T03:24:39Z

Created page with "<center> <gallery caption="Example input and output Images" heights=200 widths=250 > File:Example_simulate_motion_blur_01.jpg File:Example_simulate_motion_blur_02.jpg </galler..."

New page
<center>
<gallery caption="Example input and output Images" heights=200 widths=250 >
File:Example_simulate_motion_blur_01.jpg
File:Example_simulate_motion_blur_02.jpg
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Simulates linear motion blur by creating a PSF. This is useful when you want to generate a test set of synthetic images under blurred conditions.

Example Code:
* [https://github.com/lessthanoptimal/BoofCV/blob/v0.39/examples/src/main/java/boofcv/examples/imageprocessing/ExampleSimulateMotionBlur.java ExampleSimulateMotionBlur.java]

Concepts:
* Convolution
* Simulation

Relevant Examples:
* [[Example_Image_Blur|Image Blur]]

= Example Code =

<syntaxhighlight lang="java">
/**
* Shows you how to simulate motion blur in an image and what the results look like.
*
* @author Peter Abeles
*/
public class ExampleSimulateMotionBlur {
public static void main( String[] args ) {
// Load a chessboard image since it's easy to see blur with it
GrayF32 image = UtilImageIO.loadImage(UtilIO.fileExample("calibration/mono/Sony_DSC-HX5V_Chess/frame03.jpg"), true, ImageType.SB_F32);
GrayF32 blurred = image.createSameShape();

var panel = new ListDisplayPanel();

for (int degrees : new int[]{0, 25, -75}) {
double radians = UtilAngle.degreeToRadian(degrees);
for (double lengthOfMotion : new double[]{5, 15, 30}) {
// Create the PSF (i.e. Kernel) that models motion blur with constant velocity
// radians is the motion blur's direction
Kernel2D_F32 kernel = MotionBlurOps.linearMotionPsf(lengthOfMotion, radians);
GConvolveImageOps.convolve(kernel, image, blurred, BorderType.EXTENDED);

// Visualize results
BufferedImage visualized = ConvertBufferedImage.convertTo(blurred, null);
panel.addImage(visualized, String.format("linear: angle=%d motion=%.0f", degrees, lengthOfMotion));
}
}

ShowImages.showWindow(panel, "Simulated Motion Blur", true);
}
}
</syntaxhighlight>