MATLAB >> Display images in Simulink

by Milo Minderbinder » Thu, 13 Mar 2008 00:47:01 GMT

Is it possible to display images in simulink without first
purchasing the signal processing blockset?

I would be willing to do something like hand control to a
matlab script, using an image display function in matlab,
and then hand control back to simulink, but I have no idea
how to accomplish this, and only a very limited set of
matlab functions seem to be supported in simulink (to my
ignorant eyes.)

Regards,

Milo Minderbinder

Similar Threads

1. Display an image on the secondary display

Hello, i am working with spacial phase modulator, that is connected to my computer like a secondary display, and i can controll it by puting a grayscale image on the secondary display in full screen.
I would like to do it in matlab if its possible,
(i calculate the phase image in matlab by a Gerchberg-Saxton algorithm)
Ii could do it with a figure positioned in the secondary monitor, but my problem is that the figure title bar cannot be removed, so my image does not fill the screen entirely.
Is there any way to display just the image itself on the screen?

thanks for Your help!

2. Getting value from a display in simulink model to display on GUI - MATLAB

3. extract an object from 1 image and display it on top of another image

Hi,

I was wondering if any one know how to extract objects from a number of frames and then display these objects on another background.
So far i have managed to find my objects and draw bounding boxes around them.
I have got a background and displayed these bounding boxes on the background with no problem at all.
However now i need to display the segmented parts on the background.
Thanks!

I have the locations of the pixels of the objects and all objects have been labelled using bwlabel so i can view each object in binary. I just don;t know how to extract object in rgb to new background

4. Problem in displaying images using the image processing toolbox - MATLAB

5. displaying convex hull as image (OR figure->image conversion)

Hi all,

I have a binary image matrix containing a bunch of points for which I
want to draw the convex hull (basically, store it as another binary
image).

The approach I've tried to use is to first get the convex hull
vertices using the imagefeature() function from the Image Processing
Toolbox, then to plot these points as a 2-D polygon in a figure
window (using the fill command). So far everything's okay, but now I
want to convert this figure back to a binary image such that my
points from the figure window conform to the dimensions and pixel
locations of my original image. I've tried playing with various
properties of the axes handle (rather arbitrarily I admit) but I
can't seem to get the size right in my final image [which I obtain
using the getframe() function on the axes handle, followed by binary
thresholding using imbw() ]

Here's a sample of my code:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% A random binary image:
I = zeros(240, 320);

I(10,40) = 1; I(200,90) = 1;
I(150, 100) = 1; I(60, 200) = 1;
I(50, 50) = 1;

% Getting the convex hull and
% plotting in figure window:

I = uint8(I);

stats = imfeature(I, 'ConvexHull');
xi = stats.ConvexHull(:,1);
yi = stats.ConvexHull(:,2);
figure;
fill(xi, yi, 'r');

% Fiddling with axes handle properties
% with the hopes that something works:

h = gca;
set(h, 'Units', 'Pixels');
set(h, 'xlim', [1 320]);
set(h, 'ylim', [1 240]);
set(h, 'DataAspectRatio', [1 1 1]);
set(h, 'XTick', [])
set(h, 'YTick', [])
set(h, 'Box', 'off');

% Converting figure to image:

img = getframe(h, [1 1 320 240]);
bw=~im2bw(img.cdata,.9);
I1 = bw(end:-1:1, :);
%The prev statement flips the y-axis
%upside down, I1 now contains my convex
% hull image

figure; imshow(I);
figurel imshow(I1);

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

The result seems right, except for the scaling factor.

Can someone help me fix this, or better yet, suggest a better or more
direct way to go about it in the first place?

Thanks in advance,

Akiel

6. how to display small part of image from the big image - MATLAB

7. Image interploation ...displaying color image

Rajasekar wrote:
>
>
> Hi friends,
>
> I have to read an color image using 'imread' and display an color
> image using 'imshow'...
> but when i am reading an image format of type '.png format'.
> and displaying it,
> it display in black/white format.
> not in color format..
>
> how to get an color display.........

Carefully read

doc imread

and take a look at the second return value. You may also read

doc ind2rgb

-Herbert

8. [SIMULINK] Paste image on simulink file - MATLAB