image set collection using python !

I am trying to do some kind of image collection for some research i am currently working on, what i want to do is to have a quicker way to extract the part of interest from thousands of images in an efficient and fast way, my view of the program is that to open continually images and i select the part of interest( as a rectangular object of cars persons .... ) and save it. what i could not figure 开发者_如何学编程out till now is how to be able to select or have kind of selecting tool when images show up. any help with this ?

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You'll need a GUI toolkit or a graphics library like Pygame. If you want this to look native, check out the GUI libraries in the Python standard library: http://docs.python.org/2.7/library/tk.html

However, my best area is in Pygame, so that's where I can help you best. Pygame's simple to use, but here are the modules you'll be most concerned about.

• Use Pygame.mouse to be able to click and drag, pixel by pixel, to decide where you want to crop: http://pygame.org/docs/ref/mouse.html
• Use Pygame.display to set the window to the relevant images (may not work well depending on image size; scrolling shouldn't be too difficult, though): http://pygame.org/docs/ref/mouse.html
• Use Pygame.draw to draw the rect highlighting where you've selected: http://pygame.org/docs/ref/draw.html
• Use Pygame.surface to get the selected image slice: http://pygame.org/docs/ref/surface.html
• Use Pygame.image to save the selected subsurface: http://pygame.org/docs/ref/image.html

Hope this helps.