CODEWITHSUNDEEP
imagematlabimage-processing
user2522560
user2522560

Reputation: 793

View pixel intensities of an image

How to view the pixel intensities of an image in matlab by moving the mouse pointer over the image?

I used: 

imshow(imread('image.jpg'));

But there is no option to view the pixel intensities of each pixel in the image.

For example,

      In MS-paint, while moving the mouse pointer 
      over the image we can see the location of 
      the pixel such as (20, 117) at the status bar.

But I need to see the pixel intensity instead.

Is there any other option to view it. Or I need to code to view it?

Upvotes: 4

Views: 2818

Answers (3)

user2522560
user2522560

Reputation: 793

One other option which is more interactive is

   imtool(imread('image.jpg')); % For GrayScale Image

   imtool(rgb2gray(imread('image.jpg')));  % For RGB Image

Upvotes: 2

Shai
Shai

Reputation: 114816

you have impixelinfo and impixelinfoval for showing interactive information.

Upvotes: 0

Rody Oldenhuis
Rody Oldenhuis

Reputation: 38032

If you want to create an intensity map, you can use MATLAB's rgb2gray. This will convert the n-by-m-by-3 RGB array you got from imread to an n-by-m matrix which contains the pixel intensities.

You can then point the interactive data cursor to this intensity matrix for the current mouse coordinates.

Upvotes: 1

Related Questions