how to make a programme for colors value from image?

It is my final project , I want to make a programme that take image from user when user click on image the programme give RGB value from image.

Answer 1

[Massimo Zanetti]

Hi Dilshad, what you want is very simple. Follow this code.

%load image from Matalb demo images (or load your own color image)
rgb = imread('peppers.png');
%display it on the screen
image(rgb);

Now, if you look in the toolbar in the Figure containing your image, you will find an icon "Data Cursor". Press on it and then select a pixel in the image. You will finally read the X,Y coordinates of the pixel you selected and its RGB values in a pop-up window. Hope it helped. Max

[Dilshad Ahmad]

I know that But Required from me is Programme.

[Massimo Zanetti]

Ok, then you will need something like this one maybe.

img = imread('peppers.png');
h = imshow(img,[]);
hText = impixelinfoval(gcf,h);
set(hText,'FontWeight','bold');
set(hText,'FontSize',10);

This will give you information about any pixel over which you are pointing the mouse on (without clicking on it).

[Dilshad Ahmad]

Thanks Bro I will try it.

Answer 2

[Image Analyst]

Simply call impixelinfo() to see the image (x,y) and intensity value as the user mouses around over the image.

hp = impixelinfo();

Or if you want to have them click on a point:

uiwait(helpdlg('Click on a point'));
[x, y] = ginput(1);
pixelValue = impixel(yourImage, round(x), round(y))

Or you can use imtool(yourImage) to bring up a GUI where the user can do even more.

[Dilshad Ahmad]

Thanks Bro I will try it.