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update image in GUI without GUIDE

6 vues (au cours des 30 derniers jours)
Peyman Obeidy
Peyman Obeidy le 31 Mar 2017
Commenté : Peyman Obeidy le 3 Avr 2017
I am new to GUI without GUIDE, and I would appreciate any help in completing this function. I need it to get the value from the slider and show me the updated image.
function making_SliderForIm(ImCh1,BWCh1)
global I
global Imask
Imask=BWCh1;
I=ImCh1;
imshow(I,[]);
%create a slider
sld=uicontrol('Style', 'slider',...
'Min',1,'Max',50,'Value',41,...
'Position', [400 20 120 20],...
'Callback', @SliderVal);
function SliderVal(source,event)
val=ceil(source.Value);
% Display segmented image
BWsIbf = activecontour(I,Imask, 1+val, 'edge');
[B,L] = bwboundaries(BWsIbf,'noholes');
imshow(I,[]);%label2rgb(L, @jet, [.5 .5 .5]))
hold on
for k = 1:length(B)
boundary = B{k};
plot(boundary(:,2), boundary(:,1), 'r', 'LineWidth', 2);
end
end
end

Réponses (1)

Image Analyst
Image Analyst le 31 Mar 2017
Simply get the value:
currentSliderValue = sld.Value;
whenever you need to retrieve the current value of the slider.
It should be as simple as that.
  11 commentaires
Image Analyst
Image Analyst le 3 Avr 2017
Where did you attach them? Your code here: https://www.mathworks.com/matlabcentral/answers/332877-update-image-in-gui-without-guide#comment_442232 is not a complete program.
Peyman Obeidy
Peyman Obeidy le 3 Avr 2017
It is working nicely but slow :)
function BW2Ch1=making_SliderForIm(ImCh1,BWCh1);
% This slider UI use your image and an estimated mask as input to generate a more accurate mask. It uses the "activecontour" function in matlab as
% the main core of the code
%last edited on 04-April-2017
DemoFig = figure();
TextBox = uicontrol('Style', 'text', 'Units', 'normalized', ...
'Position', [.4 .2 .2 .05], 'String', 'Slider Value', ...
'FontSize', 12);
% a slider
Slider = uicontrol('Style', 'slider', 'Units', 'normalized', ...
'Position', [.1 .1 .8 .05], 'Min', 0, 'Max', 800, 'Value', 300,...
'SliderStep', [0.01 0.1], 'Callback', @SliderUpdate);
% a button for proceding
Button = uicontrol('Style', 'pushbutton', 'Units', 'normalized', ...
'Position', [.85 .03 .1 .06], 'String', 'Proceed', 'Callback', @buttonPush);
% will add axes for a figure on top of the slider
Axes = axes('parent', DemoFig, 'Position', [.1 .3 .8 .6]);
% the image that you have in your m code will seat here
global I
global Imask
I=ImCh1;
Imask=BWCh1;
% Imask = zeros(size(I));
% Imask(25:end-25,25:end-25) = 1;
% figure, imshow(mask);
% title('Initial Contour Location');
Image = BWCh1;
imshow(Image, 'parent', Axes);
hold on ; imshow(Imask);
axis image;
SliderListener = addlistener(Slider, 'ContinuousValueChange', @ListenerFcn);
% Callback functions
function SliderUpdate(varargin)
% Function is excecuted every time slider is RELEASED, but not while the
% slider is being moved
set(TextBox, 'String', num2str(get(Slider, 'Value')));
% Set color back to default after every time slider callback is
% executed
set(TextBox, 'BackgroundColor', get(Slider, 'BackgroundColor'));
end
function ListenerFcn(varargin)
% Function is excecuted while slider is being moved.
set(TextBox, 'String', num2str(get(Slider, 'Value')));
% To show what action is the slider callback and what is the
% listener, we'll change the color of the text box while the
% listener is active
SliderVal(Slider);
set(TextBox, 'BackgroundColor', [0.5 0.5 0.9]);
end
function SliderVal(source)
%delete(findobj('parent', Axes, 'type', 'line', 'marker', 'o'));
val=ceil(source.Value);
% Display segmented image
BW2Ch1 = activecontour(I,Imask, 1+val, 'edge');
[B,L] = bwboundaries(BW2Ch1,'noholes');
% add here
if ~isempty(B);
imshow(I,[]);%label2rgb(L, @jet, [.5 .5 .5]))
hold on
set(Axes, 'NextPlot', 'add');
for k = 1:length(B)
boundary = B{k};
plot(boundary(:,2), boundary(:,1), 'r', 'LineWidth', 2);
end
set(Axes, 'NextPlot', 'replace');
end
end
currentSliderValue = ceil(get(Slider, 'Value'));
function buttonPush(varargin)
BW2Ch1inal= activecontour(I,Imask, 1+currentSliderValue, 'edge');
close(DemoFig);
end
uiwait;
end

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