Develop Reference

Create a basic Python interface to save images drawn with a mouse

I am working on the following project and I am having really difficulties in finding the right way of doing that. I would like to build in Python (but I am open to other possibilities) a very basic interface that allows the user to draw with the mouse (or the pen if used on a surface laptop) something and then save the image. Ideally I would like this to work on a website or at least in a jupyter notebook (at least I imagine this to be utterly difficult).
Anyone can point me in the right direction? The goal would be to use the images as input to a neural network model to demonstrate its result with real life examples.
I am looking at tk but I don't seem to find much in terms of examples.
Thanks in advance, Umberto

I'd take a look at pyautogui to capture the mouse location then "draw" it in matplotlib -- should be able to do this in a loop. You'll want to watch the tkinter window size to sync the mouse coordinates with the relative location.
Why not just have your script open create a new blank img and automatically open it with paint - then read it on close? Seems easier than creating a drawing GUI.

Have a look at my Github repository which have exactly what you need.
Link : CanvasDraw Repo

Depending on the complexity you could either use tkinter which is a package for complex GUIs or something from the gaming community like pygames. You have user input and graphical output so libraries made for games will do what you want but provide way more stuff then you need. This site might help you: Drawing Libarys
Also the answere draw-on-python-tkinter-canvas-using-mouse-and-obtain-points-to-a-list might help you.

move a stereoscopic video on the screen

I would like to move a (stereoscopic) video on a computer screen automatically. Think of the video as the ball in a Pong game. The problem is that it should be a stereoscopic 3D video. So the video size itself is kind of small. I did this kind of movements with pictures or drawing object, but I don't know how to do it with video material!
Does somebody know how I can do this? I already searched for video tools in python like pygame or pyglet. I have an external player Bino 3d which can open the desired video. But how can I make it move around the screen?
Or is there a tool in other programming languages like c/c++ or Matlab which can help?
By the way, the program will be on a Linux OS.
I'll be grateful for any help or hints!
Anna

I'd try to use a decent video client (mplayer, vlc). They can present the video in lots of ways, hopefully your stereoscopic issue can be solved by them.
Then I would let the client present a single window (not fullscreen) which I then would move around using window manager controls.
If you must not have window decorations around the video or if the output shall be a specific window, I think mplayer at least can be told to use an existing window to perform the output in. Maybe that's an approach then.

How to set the screen resolution in pythoncard

I want to set the resolution of my application as per the resolution of the system screen its running on. i want to be on top and also in full screen covering even the taskbar as i am using windows. i want the app to open like the ATM interface, so the app should fill the entire screen.
please help me to find the solution.
thanks

The frame object has a "ShowFullScreen" method that you could use. I just tested it and it works alright, although it doesn't show the title bar of the app. I don't know if you care about that though.
EDIT: Uh, to call a method on the frame object, you would do something like
self.ShowFullScreen(True)
or
myFrame.ShowFullScreen(True)

Screen overlay with Python, paint over an active window with background python script

I'm writing a python script that runs in the background and takes screenshots of another application that is active. Then it analyses the screenshots and now it should overlay a certain image over the active app or the screen. I still need to be able to make mouse and keyboard inputs in the active app.
So I need a way to overlay/paint on another window or on the screen, and still keep the other window the active window so that I can make inputs.
I would prefer to do that with python in Mac OS, but if it isn't possible, other languages and even Windows (if really necessary) would also be ok.
Can anybody help me?
Thanks in advance!

http://www.michaelfogleman.com/2009/12/drawing-on-the-windows-desktop-using-python-and-wxpython/
Seems to do what you want, but is windows only, as are some other answers to similar questions here on stackoverflow

Python: OSX Library for fast full screen jpg/png display

Frustrated by lack of a simple ACDSee equivalent for OS X, I'm looking to hack one up for myself. I'm looking for a gui library that accommodates:
Full screen image display
High quality image fit-to-screen (for display)
Low memory usage
Fast display
Reasonable learning curve (the simpler the better)
Looks like there are several choices, so which is the best? Here are some I've run across:
PyOpenGL
PyGame
PyQT
wxpython
I don't have any particular experience with any of these, nor any strong desire to become an expert - I'm looking for the simplest solution.
What do you recommend?
[Update]
For those not familiar with ACDSee, here's what it does that I care about:
Simple list/thubmnail display of images in a directory
Sort by name/size/type
Ability to view images full screen
Single-key delete while viewing full screen
Move to next/previous image while viewing full screen
Ability to select a group of images for:
move to / copy to directory
delete
resize
ACDSee has a bunch of niceties as well, such as remembering directories you've moved images to in the past, remembering your resize settings, displaying the total size of the images you've selected, etc.
I've tried most of the options I could find (including Xee) and none of them quite get there. Please keep in mind that this is a programming/library question, not a criticism of any of the existing tools.

I will recommend using wxPython to create such a viewer, wxPython is easy to learn, free, cross platform and blends well in OSX. Even if you want to use pyopengl, wxPython would be good with pyopengl.
see such tutorials http://showmedo.com/videotutorials/video?name=1790000&fromSeriesID=179
and there is already cornice written in wxpython/PIL, may be you can modify that. It has been inspired by the famous Windows-only ACDSee :)

it's not an answer to your coding question but for (a big part of) the lack of ACDsee equivalent (requires OSX 10.5+):
Simple list/thubmnail display of images in a directory: Finder.app
Sort by name/size/type: Finder.app will do name & type, not image size (but does file size)
Ability to view images full screen: quick preview (spacebar / eye icon)
Single-key delete while viewing full screen: command-backspace while viewing in quickpreview, both windowed and fullscreen
Move to next/previous image while viewing full screen: both quickprewiew (after selecting a group of images or whole directory with cmd-a) and Preview.app
Ability to select a group of images for[...]: Finder.app will does all but resize
seems like you have everything except resize just pressing the spacebar while in finder.
Preview.app will resize both a single image or multiple ones in one batch.

Use an App like Picasa (now available on mac). Use AppleScript through Python to control it from your application.
Failing that, use PyObjC to create Cocoa image display component and dialogs, and so on.

I ended up using PyGame, has been pretty good so far.