Conventions

Conventions used internally.

• Frame zero is when the first note begins.

• Note zero is lowest note on piano.

• One coord (unit of distance) is the width of one white key in the video. This is equal to the horizontal resolution divided by 52. For example, for a 1920x1080 video, one coord is 36.924 pixels.

• C++ functions called by Python may take many arguments in order to obtain all required prop values. The naming convention is p_video_fps or d_img or dp_blocks_color. p means a property. d means raw data (numpy array pointer) which will be wrapped with an internal class.