Interpolation module¶

OpFlowLab.functions.interpolation.inverse_distance_weighting(pts, distances, indices, values, map_x_inverse, map_y_inverse)[source]¶

Interpolates the values using inverse distance weighting

Parameters

ptsndarray: Array containing the x and y coordinates of points to be calculated
distancesndarray: Distances of the nearest points
indicesndarray: Indices of the nearest points
valuesndarray: Values used in the interpolation
map_x_inversendarray: Preallocated array used to store the inverse map position in the x direction
map_y_inversendarray: Preallocated array used to store the inverse map position in the y direction

Returns

map_x_inversendarray: Inverse mapping positions in the x direction
map_y_inversendarray: Inverse mapping positions in the y direction

OpFlowLab.functions.interpolation.inverse_mapping(map_x, map_y, image_shape)[source]¶

Finds the inverse mapping in order to use OpenCV’s remap function in the forward time direction

Parameters

map_xndarray: Array containing the movement of pixels in the x direction
map_yndarray: Array containing the movement of pixels in the y direction
image_shapesequence of int of length 2: Size of image

Returns

map_x_inversendarray: Inverse mapping positions in the x direction
map_y_inversendarray: Inverse mapping positions in the y direction