sphereModel.plot

Plot sphere in a figure window

Syntax

plot(model)

plot(model,'Parent',ax)

Description

H = plot(model) plots a sphere in the current figure. H is the handle to surf, a 3-D shaded surface plot.

H = plot(model,'Parent',ax) additionally allows you to specify an output axes.

Input Arguments

model — Parametric sphere model

sphere model

Parametric sphere model returned by sphereModel.

'Parent' — Output axes

gca (default) | axes

Output axes, specified as the comma-separated pair of 'Parent' and the current axes for displaying the visualization.

Examples

Detect Sphere in Point Cloud

Load point cloud.

load('object3d.mat');

Display point cloud.

figure
pcshow(ptCloud)
xlabel('X(m)')
ylabel('Y(m)')
zlabel('Z(m)')
title('Detect a sphere in a point cloud')

Set the maximum point-to-sphere distance (1cm), for sphere fitting.

maxDistance = 0.01;

Set the region of interest to constrain the search.

roi = [-inf, 0.5; 0.2, 0.4; 0.1, inf];
sampleIndices = findPointsInROI(ptCloud, roi);

Detect the globe in the point cloud and extract it.

model = pcfitsphere(ptCloud, maxDistance, 'SampleIndices', sampleIndices);

Plot the sphere.

hold on
plot(model)