Tools

Image tools

imread(filename[, flatten])	Read an image
imsave(filename, arr)	Write an image.
negative(image)	Return the negative of an 8-bit image

Vector tools

save(filename[, fmt, delimiter])	Save flow field to an ascii file.
transform_coordinates(x, y, u, v)	Set origin of flow field.
uniform_scaling(x, y, u, v, scaling_factor)	Apply an uniform scaling.