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They tell me to tuse a linear function that maps I_min to 0 and I_max to 255 and all intensites I within that range to 255*(I-I_min)/(I_max - I_min).

The problem I am having is how to make it so that the function reads every individual pixel of the image and transforms it to a new pixel value. I am stuck at this part.

Please help since it is my first time using matlab.

Here is my code so far:

function [ output_args ] = imagehisto(image)

%Function that maps pixel values using a transfer function from 0 to 255 if

%it is out of ranage.

% Input of an image, reading each pixel and transferring it to a new

% pixel value.

pic = imread(image);

colormap(gray);

pic2 = rgb2gray(pic);

I_max = double(max(pic2();

I_min = double(min(pic2();

x = (0:1:255)

x = pic2

y(I_min+1 : I_max+1) = (255*(x(I_min+1 : I_max+1) - I_min)/(I_max - I_min))

y(1 :I_min) = 0

y(I_max+2 : 256) = 255

imagesc(pic3);

%plot(x,y);

%out_image = transfer_function(pic2);

end