improfile

Parameters

matrix

The gray-level matrix obtained by matrix=imread("my_picture.jpg").

option

0 to draw the profiles on the image 1 to draw the profiles in separated windows. 2 to draw the profiles on the image and the gaussian interpolation (used with laser beam images) Default=0.

maximal_luminance

hprofile and vprofile will contain values in the 0-1 range. To draw the profile, you can specify a multiplication factor to these values. For example, if your initial image was 8bits, you could pass 255 as the maximal luminanace of the image. Default= 255.

hprofile or vprofile

Matrix containing the horizontal (or vertical) profile selected.

Description

Draws the values of pixels on a line and/or a row. Can draw profiles on the image or in separate windows. With the option=2, you can determine radius w of a laser beam, which allows you to find the beam waist.

This function was created (and tested) only with gray level images.

Examples

a=imread(SIPDIR+'images/tru.jpg'); g=im2gray(a); improfile(g); //profiles in separate windows improfile(g,1) //laser beam visualisation b=gray_imread(SIPDIR+'images/photonics/laser1.jpg'); improfile(b,2);

Authors

• Jocelyn DRUEL <jocelyn.druel1@libertysurf.fr>
• Ricardo Fabbri <ricardofabbri@users.sf.net>

Availability

http://siptoolbox.sourceforge.net

See Also

• xgetpixel