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intelligent_scissors_5421spring2018's Issues

Python & OpenCV version

I'm using Python 3.4.3 and OpenCV 3.4.0, I guess the code should be working on Python 3.6.3 and OpenCV 3.1.0 too.

error when generating path tree the second time 

......generating path tree......
Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python3.4/tkinter/__init__.py", line 1536, in __call__
    return self.func(*args)
  File "gui.py", line 462, in show_path_tree
    obj.path_tree_generation()
  File "/home/hao/HKUST/5421_spring_18/intelligent_scissors_5421spring2018/intelligent_scissor.py", line 160, in path_tree_generation
    self.path_tree = np.concatenate([self.path_tree, self.path_tree, np.zeros((self.height*3, self.width*3,1), dtype=np.uint8)],axis=2 )
ValueError: all the input arrays must have same number of dimensions

artifact idea

I'd like to have a picture of robot from my company, a picture of robot in your lab, and insert them into a famous movie scene such as Matrix / Chappie / Pacific Rim / Wall E . How about that? @onlytailei

trailing white space

@onlytailei can you avoid introducing trailing white spaces? Currently newline definitely introduce trailing white space, among other cases.

Your editor should support that function, usually. If you are using vim then %s/\s\+\$//g will do. Otherwise, IDLE have that capability as well.

I rendered trailing white spaces in vim so that you can see:
screenshot from 2018-02-18 11 25 52

GUI functional requirements

  1. Ctrl + left click : first seed
  2. left click : following seed
  3. moving cursor in sissor mode: keep a stack for previous seeds in sequence shared between GUI and algorithm. The top element is the current seed. GUI keep sending current cursor coordinates to algorithm, and algorithm keeps computing the path, send it back to GUI, where GUI visuializes it.
  4. Enter : finish the current contour
  5. Ctrl + Enter: close current contour and fish
  6. Ctrl + '+' : zoom in
  7. Ctrl + '-' : zoom out
  8. Arrow key : navigate
  9. Backspace: when scissoring, delete the last seed; otherwise, delete selected contour. Select a contour by moving onto it. Selected contour is red, un-selected ones are green.

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