How to update the value in a function with an uicontrol slider?

So I have a GUI that calls a figure to exectute an image processinge function what I want to know is how to update the image according to the value of the slider in the figure

Here I create the figure

img1 = handles.img1;
f = figure;
c = uicontrol(f,'Style','slider');
title('Bin');
c.Callback(@Bin)

So with that I call the function Bin which should takte the slider value as umbral

function bin(umbral, img1)
[ax, ay, az] = size(img1);
imgRes = zeros(ax, ay, az);
for m = 1:ax
    for n = 1:ay
        for o = 1:az
            if (img1(m, n, o)) > umbral
                imgRes(m, n, o) = 1.0;
            else
                imgRes(m, n, o) = 0;
            end
        end
    end
end
imshow(imgRes);

Since is just this plot I rather avoid creating another GUI just for the slider any ideas to how to make it work?

Answer 1

[Kevin Chng]

1st Create GUI with Slider and Axes, Create a call back for slider

f=figure;
ax = axes(f);
ax.Position=[0.1 0.2 0.8 0.7]
c = uicontrol(f,'Style','slider','Position',[120 30 300 20],'Callback',@bin);

2nd Create Callback of slider and get value of slider in the callback

function bin(hObject,evendata,hi)
   hObject.Value
end

hObject.Value is the value of your slider, then you may proceed to use the value for your image processing.

[Hansel Montuffar]

I understand how to create the uicontrol object what I dont understand is how to give the original image as a parameter and how to handle the result of the callback

[Kevin Chng]

f=figure;
ax = axes(f);
ax.Position=[0.1 0.2 0.8 0.7];
im=imread('your image.png');
c = uicontrol(f,'Style','slider','Position',[120 30 300 20],'Callback',{@(u,v)bin(u,v,im)});

function bin(hObject,evendata,hi,image)
   hObject.Value
   image %your image information
end

Will it help you?

[Kevin Chng]

could use guidata to handle your output information from the callback.

handles.a = result
guidata(hObject,handles)