2D interpolation

2Dinterpolation.py

from scipy import interpolate
import numpy as np

array = np.array([[0,20,10], [0,10,5]])
new_shape = (2, 21)

f = interpolate.interp2d(np.linspace(0, new_shape[1], array.shape[1]), np.linspace(0, new_shape[0], array.shape[0]), array)
new_array = f(np.linspace(0, new_shape[1], new_shape[1]), np.linspace(0, new_shape[0], new_shape[0]))

# array([[ 0. ,  2. ,  4. ,  6. ,  8. , 10. , 12. , 14. , 16. , 18. , 20. ,
#         19. , 18. , 17. , 16. , 15. , 14. , 13. , 12. , 11. , 10. ],
#        [ 0. ,  1. ,  2. ,  3. ,  4. ,  5. ,  6. ,  7. ,  8. ,  9. , 10. ,
#          9.5,  9. ,  8.5,  8. ,  7.5,  7. ,  6.5,  6. ,  5.5,  5. ]])

# see https://stackoverflow.com/questions/62323694/how-to-prevent-repeated-values-when-doing-cv2-resize for comparison with cv2.resize