Peter: Created page with "Loading and saving a point cloud. '''Example Code:''' * [https://github.com/lessthanoptimal/BoofCV/blob/v0.38/examples/src/main/java/boofcv/examples/pointclouds/ExampleLoadAn..."

2021-07-12T22:09:00Z

Created page with "Loading and saving a point cloud. '''Example Code:''' * [https://github.com/lessthanoptimal/BoofCV/blob/v0.38/examples/src/main/java/boofcv/examples/pointclouds/ExampleLoadAn..."

New page

Loading and saving a point cloud.

'''Example Code:'''
* [https://github.com/lessthanoptimal/BoofCV/blob/v0.38/examples/src/main/java/boofcv/examples/pointclouds/ExampleLoadAndSavePointCloud.java ExampleLoadAndSavePointCloud.java]

'''Concepts:'''
* 3D Point Cloud

'''Related Examples:'''
* [[Example_View_Point_Cloud| Viewing a Point Cloud]]

= Example Code =

<syntaxhighlight lang="java">
/**
* Example showing how to load and save a point cloud.
*
* @author Peter Abeles
*/
public class ExampleLoadAndSavePointCloud {
public static void main( String[] args ) throws IOException {
File file = File.createTempFile("boofcv", "txt");

// Creating a point cloud and storing it in a more "exotic" format used when dealing with a very large
// number of points.
PackedArray<Point3D_F64> original = new PackedBigArrayPoint3D_F64();
for (int i = 0; i < 100; i++) {
// create arbitrary points
original.append(new Point3D_F64(i, i + 1, -i));
}

System.out.println("original.size=" + original.size());

// Save the colorless point cloud
PointCloudIO.save3D(PointCloudIO.Format.PLY,
PointCloudReader.wrap(
// passed in (x,y,z) and rgb info
( index, point ) -> point.setTo(original.getTemp(index)),
// specifies the number of points
original.size()),
/* saveRGB */false, new FileOutputStream(file));

// create another arbitrary format to store the loaded results
List<Point3D_F64> found = new ArrayList<>();

PointCloudIO.load(PointCloudIO.Format.PLY, new FileInputStream(file),
( x, y, z, rgb ) -> found.add(new Point3D_F64(x, y, z)));
// There's a non functional version of load() which will provide the writer with information about the
// clouds size and format.

System.out.println("found.size=" + found.size());

// clean up
file.delete();
}
}
</syntaxhighlight>

Example Load and Save Point Clouds - Revision history

Peter: Created page with "Loading and saving a point cloud. '''Example Code:''' * [https://github.com/lessthanoptimal/BoofCV/blob/v0.38/examples/src/main/java/boofcv/examples/pointclouds/ExampleLoadAn..."