plot

Plot MSER regions

Syntax

plot(points)

plot(points,ax)

plot(points,ax,Name,Value)

Description

plot(points) plots points in the current axis.

plot(points,ax) plots points in the specified axis.

plot(points,ax,Name,Value) sets properties using one or more name-value pairs. Enclose each property name in quotes. For example, plot('ShowOrientation',true)

Examples

Plot MSER Regions

Extract MSER features and plot the regions.

Read image and extract MSER features.

I = imread('cameraman.tif');
regions = detectMSERFeatures(I);
imshow(I); hold on;
plot(regions);

Plot MSER Regions.

figure; imshow(I); hold on;
plot(regions,'showPixelList',true,'showEllipses',false);
hold off;

Input Arguments

points — Points

MSERRegions object

Points, specified as a points object. The object contains information about the feature points detected in the 2-D grayscale input image.

ax — Axes handle

handle

Handle to use for display. You can set the handle using gca.

Name-Value Pair Arguments

Example: 'ShowOrientation','true'

'showEllipses' — Display ellipsis

true (default) | false

Display ellipsis around feature, specified as true or false. When you set this value to true, the object draws an ellipse with the same 2nd order moments as the region. When you set this value to false, only the ellipses centers are plotted.

'ShowOrientation' — Display orientation line

true (default) | false

Display feature point orientation, specified as true or false. When you set this value to true, the object draws a line corresponding to the point's orientation. The object draws the line from the feature point location to the edge of the circle, indicating the scale.

'showPixelList' — Display regions using JET colormap

true (default) | false

Display regions using JET colormap, specified as true or false.