Auto-measuringboxARCorewithPointclouds
自动测量箱 ARCore 点云测量 是一种基于 ARCore 技术的应用，它可以自动计算出三维空间中的物体尺寸，并提供可视化的结果展示。以下是实现该应用的关键步骤和代码示例：
- 通过 ARCore 获取相机数据和点云数据，并将点云数据转换为三维空间中的坐标点。
ArFragment arFragment = (ArFragment) getSupportFragmentManager().findFragmentById(R.id.ar_fragment);
arFragment.getArSceneView().getScene().addOnUpdateListener(frameTime -> {
Frame frame = arFragment.getArSceneView().getArFrame();
if (frame == null) {
return;
}
PointCloud pointCloud = frame.acquirePointCloud();
FloatBuffer points = pointCloud.getPoints();
// convert point cloud to 3D coordinates
ArrayList
- 根据相机数据和点云数据，将物体框定在三维空间中，并计算出物体的尺寸。
Vector3 min = new Vector3(Float.MAX_VALUE, Float.MAX_VALUE, Float.MAX_VALUE); Vector3 max = new Vector3(Float.MIN_VALUE, Float.MIN_VALUE, Float.MIN_VALUE); for (Vector3 point : pointCloudPoints) { // project point onto camera plane Vector3 projectedPoint = arFragment.getArSceneView().getScene().getCamera().projectPoint(point); if (projectedPoint != null) { // update minimum and maximum coordinates of object min.x = Math.min(min.x, projectedPoint.x); max.x = Math.max(max.x, projectedPoint.x); min.y = Math.min(min.y, projectedPoint.y); max.y = Math.max(max.y, projectedPoint.y); min.z = Math.min(min.z, projectedPoint.z); max.z = Math.max(max.z, projectedPoint.z); } } float width = max.x - min.x; float height = max.y - min.y; float depth = max.z - min.z;
- 在 ARCore 中将物体可视化展示出来。
Anchor anchor = frame.createAnchor(frame.getCamera().getPose().compose(Pose.makeTranslation(0, 0, -depth / 2)).extractTranslation()); ModelRenderable.builder()