I'm trying to write a macro that:
Opens up all .tif images from a folder
Converts them all to 32-bit images
Adjusts the brightness and contrast to a certain min/max (130/160)
Subtracts the background with a rolling ball radius of 15 and light background checked
Adjusts the threshold to a specific min/max values
I have no experience with code and have more than 600 images to go through. Manually would take weeks. Any help is appreciated.
Thank you!
Please use the ImageJ macro recorder to get the main code steps (2. to 5.) for the desired operations. Then surround these code steps by the macro code available from:
"Help >> Examples >> Macro >> Process Folder"
Related
I am trying to get better quality phase plots of complex functions made with the Complex Function Explorer of E. Wegert CFE. For this purpose I apply the Matlab anti-aliasing function myaa.m to the phase plots that are made with the CFEGUI.m. For the example screenshot of the result window below I used the setting myaa([8 8]) in the Matlab command window which means that the supersampling enlarge the figure 8x and then downscale it to 1/8 to get the original h x w.
As one can see the window of the figure has no operation icons or menu options for save or print. My question is what to do with such a figure (beside making screenshots)? Can I somehow use export-fig to save such a figure or load it in an image array and if yes, how?
It is also possible to use the setting myaa([8 1]) which results in a very large figure window that is larger than my screen (and has the unpleasant attribute that it can not be moved). It would be even better if such a whole figure could be saved (not only the visible part).
You can use getframe to grab current figure information in pixels.
However, while I do not know how this affects you, notice that MATLAB versions above 2014b (included) have already anti-aliasing. The code you linked seem to be from 2008, I am not 100% sure if it has become obsolete now.
I have made a Gui program that I compile to EXE application which lots csv file into graph data. I buit a save button but I do not know how save figure with different name each time cause (savefig anduisave both uses matlab program). I am posting my code below if anyoff you guys figure out how to save gui figue into image or anything that does require matlab to open. Last function is the callback function for save button.
function ma_Callback(hObject, eventdata, handles)
% i tried uisave but not possible to run computer without matlab cause mcr
% does not run uisave
% i tried copyopbj but since i did not put a name on my figure it did not
% work
%savefig
If you are trying to save a kind of image from your figure, then the best option which supports many aspects, is using print function.
I have already done this in a compiled app and it works perfect. Using print function you can set different file type(vector formats like *.svg are also supported), resolution(dpi), and so many others.
Although you can use print function directly on the figure, but I found that the best way (More Customization like removing or adding some objects and changing many options) is to follow this steps:
Create another figure with Visible='on' but a position that is out of screen with the same width and height of Main Figure.
normalized position = [-1, -1, ?, ?]. (Create this figure in start up and don't destroy it until your app exits, let call it Print Figure).
Copy your figure content (or the parts you are interested in) using copyobj to that figure (you may need to set Parent property of some key objects like panels to this new figure). They would look exactly as they look in the main figure, because they have the same properties. you can add or remove some objects in this step.
Change aspect ratio of "Print Figure" for a better output.
Print this figure with all options (file format, dpi, ...) you need. in my own GUI i allowed the user to change this settings with an input dialog.
In my app i used functions like winopen to show the output, and output directory to the user, when the print task was done. Print process takes some time, specially if dpi is huge, so it is also a good idea to inactivate buttons and show wait cursor.
Update:
a simple usage would be:
print(MainFigure, 'myFileName', '-dpng', '-r300')
Is there a command to maximize or manipulate in any way the size and placement of a plot window in Dymola?
After creating a plot using createPlot(), I would like to maximize that window within its allowed area of the screen.
No resource, either online or printed, has indicated how to do this, and none has said it couldn't be done. I am hoping someone can point me to a source that tells me how, or tells me to stop trying.
Here is the entirety of my test script:
simulateModel("TIL_AddOnTraining.Example07a", stopTime=300, method="dassl", tolerance=1e-005, resultFile="Example07a");
createPlot(
id=0,
position={0, 0, 857, 705},
x="valve.summary.dp",
y={"valve.summary.m_flow_A"},
grid=true,
colors={{255,0,0}},
thicknesses={0.7},
autoscale = true
);
[Here is where I would like the command to maximize window called "Plot [0*]".]
Thanks in advance.
Not an answer to the feasibility of doing this in Dymola, but here's a way to create and fine tune plot windows for Modelica using Mathematica and SystemModeler.
Needs["WSMLink`"]
sim=WSMSimulate["HelloWorld"];
plot=WSMPlot[sim,{"x","der(x)"},PlotLabel->"Very Interesting Plot\[Dash]Full Screen"];
CreateDocument[plot,WindowSize->Full]
The setting WindowSize can be changed to different options to select a fraction of the window, full screen, pixel size, and so on.
I'm very new to Matlab, though I know a few other programming languages, so please forgive me if this is something simple. I have not been able to find any answers to this, either on StackOverflow or elsewhere.
I produce a figure using the following code:
figure(6),imageplot(P); drawnow;
Which looks like this:
I then save this image to my computer using the following commands:
imwrite(P, 'images/plot.png');
And the resulting image is tiny, and missing some of the color information:
If, however, I utilize the save function in the open figure (image #1) and save it manually, I get exactly what I want, which is that exact image stored on my computer.
How would I program that? I assumed that imwrite() would just write the image directly, but apparently I'm doing something wrong. Any advice? Perhaps it has something to do with the imageplot command? I cannot seem to get that to work in imwrite.
Update: Based on the comments below, I have begun using "imresize" with the "nearest" option. This scales the image properly, but the resulting image is still curiously darker (and therefore has less information) than if I hit the "save" button in the figure.
Image saved from figure:
Image using "imresize" with "nearest" option:
The MATLAB imwrite command saves exactly the number of pixels as specified in your image matrix. This is the actual result of your computation; the reason the output is "tiny" is because it is supposed to be. To make it larger, would be to simply scale/zoom it as required.
The save figure option however does something quite different: it rasterizes the the output you obtain in the figure window and gives you the option for saving it as an image. This is evident in the fact that when you do so, you obtain a white background in addition to your result which is really just the grey background you see before you save it; this can be adjusted by resizing the figure window before utilizing the save option.
If you're looking to simply make the output figure larger, I would recommend using something along the lines of the imresize command.
Say, if you want the default size to be twice the size of the real result, simply use:
imresize(P, 2.0);
For more options, try help imresize.
The command you need for the "Save As..." functionality of figures is called "print". I often use
print(gcf, '-dpng', 'some_filename.png')
or
print(gcf, '-depsc', 'some_filename.eps','-r0')
to save a figure as it is shown on screen. The format png offers a small filesize and excellent quality, and it is understood by most image viewers and browsers. The eps format is a vector format, which I use for printig. The '-r0' option specifies "use the same size as given by the screen resolution" for the vector format properties.
Is there any way to print the figure to the clipboard so that the quality is identical to what the Edit-->Copy Figure option provides?
I used to save the figure to powerpoint file by using saveppt.m obtained from Matlab Central. It worked well until yesterday. I noticed that the stored image quality was somehow degraded. I tried to re-generate some ppt slides with exactly the same script and the same source data, but the new slides are simply of worse quality.
I investigated into this problem a little bit and discovered that when the figure is copied to clipboard by running print -dmeta, the image in the clipboard is already degraded, while if I use the Edit-->Copy Figure option in the figure window, I get the image as clear as the original image in the figure window.
Following is an example for your reference. I copied the image from a figure to the clipboard by two different methods, and paste it to Microsoft Paint program, and cut a piece of it to show below:
The image using print -dmeta:
The image using Edit-->Copy Figure:
If you compare the Xtick label '50', you may see that the image from Edit-->Copy Figure is smoother.
At the beginning I thought it was a problem of the resolution, but setting -rN to change the resolution does not seem to resolve my problem, at least not for N<=300.
Thank you for your help.
The short answer... Use the same function invoked in the callback for that menu item:
editmenufcn(gcf,'EditCopyFigure');
The longer answer... How exactly did I find this? You can look at my previous answer to a related question about reproducing what is done by a File menu option. The concept is the same, just for a different figure menu. For example, this will find the callback you want for the currently active figure window:
>> hCopyFigure = findall(gcf,'Label','Copy &Figure'); %# Handle for the "Copy
%# Figure" menu item
>> get(hCopyFigure,'Callback') %# Callback invoked when that item is selected
ans =
editmenufcn(gcbf,'EditCopyFigure')
The function EDITMENUFCN is another one of those sparsely documented functions, but looking through the code (by typing edit editmenufcn.m) shows that it either invokes Java (if you're on a Mac) or the undocumented function UIMENUFCN.
I think I found the answer myself. Using print -dmeta -painters to specify the renderer resolves my problem.
In File-->Preference-->Figure Copy Template-->Copy Option I noticed there are 3 options:
Metafile
Preserve information
Bitmap
I found that if I select 1, the Edit-->Copy Figure outputs the same image as print -dmeta. So I kind of confirmed the information I need is in the Preserve information option. A quick google search led me to the discussion about the potential difference of the applied renderer, and eventually I confirmed that using painters will print the image to the clipboard in the way I wanted.
The image in the question seems to be generated by the renderer zbuffer and painters, respectively. I still don't know why the default renderer of paint -dmeta changes, though.