Generation of training data for the graph extraction of endoscopic images.

1. Append new video data to end of video_data.py
2. Run before_filter.py
3. In MATLAB, run filtering/Bladder_vessels.m (filepath can be input manually)
4. Run after_filter.py

1. In video_data.py:
   1. Update/Set variable video_filepath = "C:/My/FullPath/ImageFolder" to folder containing the .png images
   2. Set variable use_images = True
   3. If you want to use the FFT filter, set variable fft_filter = True
2. Run before_filter.py
3. In MATLAB, filtering/Bladder_vessels.m:
   1. Update/Set variable line 30 VIDEO_FILEPATH = 'C:/My/FullPath/ImageFolder'
   2. Run filtering/Bladder_vessels.m
4. Run after_filter.py