rectanglecv

Syntax

rectanglecv(handle, startpoint, endpoint, color...)

rectanglecv(handle, startpoint, endpoint, color, thickness, type, shift)

Inputs

handle

Handle of the image.

Type: integer

startpoint

Two-element vector of integers representing the start point of the rectangle to draw in handle.

Type: vector

endpoint

Two-element vector of integers representing the end point of the rectangle to draw in handle.

Type: vector

color

Three element vector of integers representing red, green blue (RGB) colors that the rectangle will be drawn in.

Type: vector

thickness

Optional parameter specifying the thickness of the rectangle. Default value of thickness is 1.

Type: integer

type

Optional parameter specifying the line type. Default value is 8 and valid values are:

1

Filled line.

4

Line is drawn using 4-connected Bresenham algorithm.

8(default)

Line is drawn using 8-connected Bresenham algorithm.

16

Antialiased line.

Type: integer

shift

Optional parameter specifying number of fractional bits in handle. Default value is 0.

Type: integer

Example

Draw a red rectangle with thickness 12 in an image :

handle = imreadcv('bird3.jpg');
handlesz = imsizecv(handle);
rectanglecv(handle, [0 0], [handlesz(2) handlesz(1) - 600], [255 0 0], 12);
imshowcv(handle);