display img from function in gui

i have main code with gui hendles and i display img somehow like that:

axes(handles.axes18);   
imshow(ObrazSzary);

but now i have a separate function that i use in my main program

function [ o_str ] = ocr1( img )
pre procesing img

ocr

o_str=word
end

now i want do display pre procesinf of img in specifinc axes , but there is no hendles for axes how i can do that????

Answer 1

[Geoff Hayes]

Lukasz - if you want the image from the pre-processing part of the ocr1 function to appear in a specific axes, then pass the axes handle into the function. Just change your function signature to

 function [ o_str ] = ocr1(img, preProcImgAxesHandle)

and then when you have the pre-processed image to display, just do

 imshow(preProcImg,'Parent', preProcImgAxesHandle);

and the pre-processed image, preProcImg, will be shown on the axes that is represented by the preProcImgAxesHandle handle.

In your GUI, you would call this function as (for example)

 ocr1(img,handles.axes18)

Try making the above change and see what happens!