When I use the following,
imshow(imread('image1.jpg'));
imshow(imread('image2.jpg'));
imshow(imread('image3.jpg'));
imshow(imread('image4.jpg'));
imshow(imread('image5.jpg'));
imshow(imread('image6.jpg'));
I got only image named image6.jpg in the output figure.
There is also an option figure,imshow(...); to view all the images each in new window.
But writing figure in each line where I need to view the image is a repeated and tedious process. Is there any other solution to get the same output as with figure,imshow(..);
without using figure function.
I mainly put on this question because while programming a lot somewhere we forget to use the figure function and so the image that we need to view wont be visible. It would have been overwritten by other image. So provide me some solution.
I ask this only for simplicity in writing the code. So if there is any solution, please mention.
Thanks in advance.
I'm not sure, but I don't think that there's a workaround to that. MATLAB basically changes the current figure handle to that of a new image when you use imshow. One thing you can do however is to make a copy of imshow in your local directory and edit it accordingly to make your own UDF.
What I would recommend however (so as to preserve functionality across systems) is that you open your code is an editor and replace all imshows with figure, imshow. This should be easy enough and it'll be easy to revert back as well.
Related
I am trying to write a ray tracer and want to render my image in real time in a GUI window. Basically, I have a buffer: Vec<u8> that is constantly updating. The question is how do I display it on the screen after completing each row. I was thinking about using iced or egui, but couldn't figure out how to output changing image without copying it each time. Solutions that are using other toolkits are also welcome.
egui asks for TextureId:
ui.image(my_texture_id, [640.0, 480.0]);
but doesn't say where to get it
For egui there's some example here and a note here if you want to go 3D (with an example too).
For iced there's a bunch of examples, and some of them are using image/image_viewer (e.g. pokedex).
A way to go would be to copy their code, make it compile/run, and then tweak it with your logic. If something goes wrong - you'd have more input for a more concrete SO question.
Also I don't think that there's anything wrong per se in copying the data for the purpose of buffering (see this).
I haven't dabbled with animated gifs for a very long time. I'd like to create something similar to this:
https://dribbble.com/shots/2941889-Wind
I can't imageine whoever created this animated frame-by-frame to get that result. So i'd like to know what tools there are for doing something like that? Or perhaps i'm all wrong and the only way to do it is frame-by-frame?
Just some advice where to get started if anyone is able.
So what i did in the end was use Adobe Illustrator to create the paths.
I then changed the stroke to dashed. Modifying the dash i was able to make it appear as thought the line was growing along the path. I then created more paths.
I then created a js file to incrementally increase the dash and save a gif. This created me over 100 snapshots.
Imported these into Adobe Photoshop and export! Bingo!
I'm working on a small image processing project in MATLAB. I have worked with MATLAB before, but never created a GUI. The GUI I want to create could be pretty advanced, so I need some hints on how to get started.
The purpose of the GUI would be to load an image and have it shown to the user. The user then has to click on two points in the image, of which the coordinates are stored (in pixels) in a variable. If possible, a colored dot is shown where the user has clicked. After the user finished with the current image, he can load a next one.
I have some experience with Java, and I think this wouldn't be too hard in Swing. But MATLAB seems like not having the purpose of creating such an advanced GUI. However, the whole project until now is in MATLAB, so it would be nice if I could manage to do it. Any help? Hints? Things I should look at?
Thanks a lot.
This is not a very complex task to be done in MATLAB.
For simple instructions about adding a picture to a GUI, take a look at this post:
http://blogs.mathworks.com/pick/2007/10/16/matlab-basics-setting-a-background-image-for-a-gui/
For instructions on various interactions between GUI axes and the mouse pointer, check this video (keep in mind that your picture in the GUI lies within normal MATLAB axes):
http://blogs.mathworks.com/pick/2008/05/27/advanced-matlab-capture-mouse-movement/
In general, Doug's tutorial videos are great for MATLAB beginners, and I'd advise you to take a look at more of them.
I've encountered such a problem, and hope you guys could help me out here.
I have a plot in my GUI, contained multiple lines with different linspecs and a group of legends.
And I've made a context menu which should allow users to open the EXACTLY same plot(retaining all line settings, title, legends, and so forth) in a new window(default figure, where it is able to save/edit the figure).
However I couldn't find a simple way to migrate the plot, except re-run the plot commands which is quite complicated(plot different data, etc.)
So, I am looking for the solution in the following two ways:
is there a simple way to migrate the plot into new figure window?
or is it possible to save the plot directly with current interface?
For 2, I'd like to clarify that I only want to save the plot, not all GUI interface. I've tried saveas(handle.Plot,...) but it saved the GUI interface as an entity.
I hope the point has been made clear, thanks for your time. Cheers.
For this task you can probably use the builtin Matlab function copyobj which does exactly this (i.e. the first option mentionned in your question).
The following piece of code demonstrates its usage:
h1=figure;
a1=plot((1:100),rand(1,100),'r-');
hold on
plot((1:100),rand(1,100),'b+');
legend({'plot1';'plot2'});
h2=figure;
copyobj(get(h1,'children'),h2);
Hope it works as well in your case.
UPDATE: as far as I understand this, your second solution would involve the saveas function which unfortunately works with the figure environment and not with axes (as you experienced it). So a workaround would probably involve copying the desired axes to a new figure with the method given above and then use saveas.
I have a set of really big images out of which I need to crop little snippets. These snippets are all exactly the same size but don't follow a strict pattern so I can't do this programatically.
Ideally I would like to open up one of the big files and be able to point and click on say, the top left corner of a snippet and have that automatically be saved to disk without even having to enter a file name, and then continue on with the rest. (Of course this would be the ideal way which I know is probably way off the real possible way!).
I started doing this in Photoshop CS4 but cropping a snippet, saving, undoing (to get to the full image), and starting over again takes way too long.
Maybe someone has a better way to do this in photoshop or in some other software.
Thanks for reading!
Instead of cropping and undoing, you could:
make (or resize) a selection
copy the selection to a new image
save the image
close the image
You might need to split it into two actions, I don't know enough about programming Photoshop.
Thank you everyone for your input.
I ended up doing this with a suggestion a colleague of mine came up with. It consisted of creating a Photoshop "slice" over the first region I wanted to crop and then cloning that region over the rest of the other sections. After that, using Save For Web (and ofter hitting Continue when PS complained about how that image was way beyond Save For Web's capabilities) I could save all images at once.
This was the fastest and easiest method I could find. Until then I was going with Mark Ransom's method.