how to extract some pixels with cordinates from original image?

i have two arrayes from x and y cordinates of particular pixels. i want to crop a region of original image with these two arrayes.(I is my original img and I1 is my img that i want this pixels crop from I);

[row col]=find(I1==1);

[Guillaume]

I don't understand your question. A crop region is typically represented by only two points: the opposite corners of the rectangle to crop, not an array of pixel.

Or are you trying to find the smallest rectangle that will encompass all these pixels?

[mari ahmad]

thakn you for the response i want to extract a Special part of original img that i have its cordinate.(first i labeled the original image and then Calculate the area of the object , now i need to have just two object that have max area.)