19 lines
691 B
Cython
19 lines
691 B
Cython
# cython: infer_types=True
|
|
# cython: profile=False
|
|
# cython: boundscheck=False
|
|
# cython: wraparound=False
|
|
|
|
|
|
cdef float clip(float a, float min_value, float max_value) nogil:
|
|
return min(max(a, min_value), max_value)
|
|
|
|
|
|
cdef inline float[::1] convert_rgb_to_cam16ucs(float[:, ::1] rgb_to_cam16ucs, float r, float g, float b) nogil:
|
|
cdef unsigned int rgb_24bit = (<unsigned int>(r*255) << 16) + (<unsigned int>(g*255) << 8) + <unsigned int>(b*255)
|
|
return rgb_to_cam16ucs[rgb_24bit]
|
|
|
|
|
|
cdef inline double colour_distance_squared(float[::1] colour1, float[::1] colour2) nogil:
|
|
return (colour1[0] - colour2[0]) ** 2 + (colour1[1] - colour2[1]) ** 2 + (colour1[2] - colour2[2]) ** 2
|
|
|