Added numpy library call and Background color

The BG_COLOR variable was not defined and the numpy library were both referenced in the library but not defined in the sample code.
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James S 2022-06-15 14:05:21 -04:00 committed by GitHub
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@ -252,10 +252,12 @@ Supported configuration options:
```python
import cv2
import numpy as np
import mediapipe as mp
mp_drawing = mp.solutions.drawing_utils
mp_drawing_styles = mp.solutions.drawing_styles
mp_holistic = mp.solutions.holistic
BG_COLOR = (192, 192, 192) # gray
# For static images:
IMAGE_FILES = []