diff --git a/skimage/feature/orb.py b/skimage/feature/orb.py
index e2f3752e..6f053aba 100644
--- a/skimage/feature/orb.py
+++ b/skimage/feature/orb.py
@@ -183,8 +183,6 @@ def descriptor_orb(image, keypoints, orientations, scales,
     """
     image = _prepare_grayscale_input_2D(image)
 
-    image = img_as_float(image)
-
     pyramid = list(pyramid_gaussian(image, n_scales - 1, downscale))
 
     descriptors_list = []
diff --git a/skimage/feature/orb_cy.pyx b/skimage/feature/orb_cy.pyx
index 2a2018d8..7e157a41 100644
--- a/skimage/feature/orb_cy.pyx
+++ b/skimage/feature/orb_cy.pyx
@@ -13,13 +13,12 @@ def _orb_loop(double[:, ::1] image, Py_ssize_t[:, ::1] keypoints,
               double[:] orientations):
 
     cdef Py_ssize_t i, d, kr, kc, pr0, pr1, pc0, pc1, spr0, spc0, spr1, spc1
-    cdef char[:, ::1] pos0 = binary_tests[:, :2]
-    cdef char[:, ::1] pos1 = binary_tests[:, 2:]
     cdef int[:, ::1] steered_pos0, steered_pos1
     cdef double angle
     cdef char[:, ::1] descriptors = np.zeros((keypoints.shape[0], 256),
                                              dtype=np.uint8)
 
+
     for i in range(keypoints.shape[0]):
         angle = orientations[i]
         sin_a = sin(angle * M_PI / 180.)
@@ -45,260 +44,517 @@ def _orb_loop(double[:, ::1] image, Py_ssize_t[:, ::1] keypoints,
     return np.asarray(descriptors)
 
 
-# Learned 256 decision pairs for binary tests in rBRIEF. Taken from OpenCV.
-cdef char[:, ::1] binary_tests = np.ascontiguousarray(np.asarray([[8,-3, 9,5],
-                           [4,2, 7,-12],
-                           [-11,9, -8,2],
-                           [7,-12, 12,-13],
-                           [2,-13, 2,12],
-                           [1,-7, 1,6],
-                           [-2,-10, -2,-4],
-                           [-13,-13, -11,-8],
-                           [-13,-3, -12,-9],
-                           [10,4, 11,9],
-                           [-13,-8, -8,-9],
-                           [-11,7, -9,12],
-                           [7,7, 12,6],
-                           [-4,-5, -3,0],
-                           [-13,2, -12,-3],
-                           [-9,0, -7,5],
-                           [12,-6, 12,-1],
-                           [-3,6, -2,12],
-                           [-6,-13, -4,-8],
-                           [11,-13, 12,-8],
-                           [4,7, 5,1],
-                           [5,-3, 10,-3],
-                           [3,-7, 6,12],
-                           [-8,-7, -6,-2],
-                           [-2,11, -1,-10],
-                           [-13,12, -8,10],
-                           [-7,3, -5,-3],
-                           [-4,2, -3,7],
-                           [-10,-12, -6,11],
-                           [5,-12, 6,-7],
-                           [5,-6, 7,-1],
-                           [1,0, 4,-5],
-                           [9,11, 11,-13],
-                           [4,7, 4,12],
-                           [2,-1, 4,4],
-                           [-4,-12, -2,7],
-                           [-8,-5, -7,-10],
-                           [4,11, 9,12],
-                           [0,-8, 1,-13],
-                           [-13,-2, -8,2],
-                           [-3,-2, -2,3],
-                           [-6,9, -4,-9],
-                           [8,12, 10,7],
-                           [0,9, 1,3],
-                           [7,-5, 11,-10],
-                           [-13,-6, -11,0],
-                           [10,7, 12,1],
-                           [-6,-3, -6,12],
-                           [10,-9, 12,-4],
-                           [-13,8, -8,-12],
-                           [-13,0, -8,-4],
-                           [3,3, 7,8],
-                           [5,7, 10,-7],
-                           [-1,7, 1,-12],
-                           [3,-10, 5,6],
-                           [2,-4, 3,-10],
-                           [-13,0, -13,5],
-                           [-13,-7, -12,12],
-                           [-13,3, -11,8],
-                           [-7,12, -4,7],
-                           [6,-10, 12,8],
-                           [-9,-1, -7,-6],
-                           [-2,-5, 0,12],
-                           [-12,5, -7,5],
-                           [3,-10, 8,-13],
-                           [-7,-7, -4,5],
-                           [-3,-2, -1,-7],
-                           [2,9, 5,-11],
-                           [-11,-13, -5,-13],
-                           [-1,6, 0,-1],
-                           [5,-3, 5,2],
-                           [-4,-13, -4,12],
-                           [-9,-6, -9,6],
-                           [-12,-10, -8,-4],
-                           [10,2, 12,-3],
-                           [7,12, 12,12],
-                           [-7,-13, -6,5],
-                           [-4,9, -3,4],
-                           [7,-1, 12,2],
-                           [-7,6, -5,1],
-                           [-13,11, -12,5],
-                           [-3,7, -2,-6],
-                           [7,-8, 12,-7],
-                           [-13,-7, -11,-12],
-                           [1,-3, 12,12],
-                           [2,-6, 3,0],
-                           [-4,3, -2,-13],
-                           [-1,-13, 1,9],
-                           [7,1, 8,-6],
-                           [1,-1, 3,12],
-                           [9,1, 12,6],
-                           [-1,-9, -1,3],
-                           [-13,-13, -10,5],
-                           [7,7, 10,12],
-                           [12,-5, 12,9],
-                           [6,3, 7,11],
-                           [5,-13, 6,10],
-                           [2,-12, 2,3],
-                           [3,8, 4,-6],
-                           [2,6, 12,-13],
-                           [9,-12, 10,3],
-                           [-8,4, -7,9],
-                           [-11,12, -4,-6],
-                           [1,12, 2,-8],
-                           [6,-9, 7,-4],
-                           [2,3, 3,-2],
-                           [6,3, 11,0],
-                           [3,-3, 8,-8],
-                           [7,8, 9,3],
-                           [-11,-5, -6,-4],
-                           [-10,11, -5,10],
-                           [-5,-8, -3,12],
-                           [-10,5, -9,0],
-                           [8,-1, 12,-6],
-                           [4,-6, 6,-11],
-                           [-10,12, -8,7],
-                           [4,-2, 6,7],
-                           [-2,0, -2,12],
-                           [-5,-8, -5,2],
-                           [7,-6, 10,12],
-                           [-9,-13, -8,-8],
-                           [-5,-13, -5,-2],
-                           [8,-8, 9,-13],
-                           [-9,-11, -9,0],
-                           [1,-8, 1,-2],
-                           [7,-4, 9,1],
-                           [-2,1, -1,-4],
-                           [11,-6, 12,-11],
-                           [-12,-9, -6,4],
-                           [3,7, 7,12],
-                           [5,5, 10,8],
-                           [0,-4, 2,8],
-                           [-9,12, -5,-13],
-                           [0,7, 2,12],
-                           [-1,2, 1,7],
-                           [5,11, 7,-9],
-                           [3,5, 6,-8],
-                           [-13,-4, -8,9],
-                           [-5,9, -3,-3],
-                           [-4,-7, -3,-12],
-                           [6,5, 8,0],
-                           [-7,6, -6,12],
-                           [-13,6, -5,-2],
-                           [1,-10, 3,10],
-                           [4,1, 8,-4],
-                           [-2,-2, 2,-13],
-                           [2,-12, 12,12],
-                           [-2,-13, 0,-6],
-                           [4,1, 9,3],
-                           [-6,-10, -3,-5],
-                           [-3,-13, -1,1],
-                           [7,5, 12,-11],
-                           [4,-2, 5,-7],
-                           [-13,9, -9,-5],
-                           [7,1, 8,6],
-                           [7,-8, 7,6],
-                           [-7,-4, -7,1],
-                           [-8,11, -7,-8],
-                           [-13,6, -12,-8],
-                           [2,4, 3,9],
-                           [10,-5, 12,3],
-                           [-6,-5, -6,7],
-                           [8,-3, 9,-8],
-                           [2,-12, 2,8],
-                           [-11,-2, -10,3],
-                           [-12,-13, -7,-9],
-                           [-11,0, -10,-5],
-                           [5,-3, 11,8],
-                           [-2,-13, -1,12],
-                           [-1,-8, 0,9],
-                           [-13,-11, -12,-5],
-                           [-10,-2, -10,11],
-                           [-3,9, -2,-13],
-                           [2,-3, 3,2],
-                           [-9,-13, -4,0],
-                           [-4,6, -3,-10],
-                           [-4,12, -2,-7],
-                           [-6,-11, -4,9],
-                           [6,-3, 6,11],
-                           [-13,11, -5,5],
-                           [11,11, 12,6],
-                           [7,-5, 12,-2],
-                           [-1,12, 0,7],
-                           [-4,-8, -3,-2],
-                           [-7,1, -6,7],
-                           [-13,-12, -8,-13],
-                           [-7,-2, -6,-8],
-                           [-8,5, -6,-9],
-                           [-5,-1, -4,5],
-                           [-13,7, -8,10],
-                           [1,5, 5,-13],
-                           [1,0, 10,-13],
-                           [9,12, 10,-1],
-                           [5,-8, 10,-9],
-                           [-1,11, 1,-13],
-                           [-9,-3, -6,2],
-                           [-1,-10, 1,12],
-                           [-13,1, -8,-10],
-                           [8,-11, 10,-6],
-                           [2,-13, 3,-6],
-                           [7,-13, 12,-9],
-                           [-10,-10, -5,-7],
-                           [-10,-8, -8,-13],
-                           [4,-6, 8,5],
-                           [3,12, 8,-13],
-                           [-4,2, -3,-3],
-                           [5,-13, 10,-12],
-                           [4,-13, 5,-1],
-                           [-9,9, -4,3],
-                           [0,3, 3,-9],
-                           [-12,1, -6,1],
-                           [3,2, 4,-8],
-                           [-10,-10, -10,9],
-                           [8,-13, 12,12],
-                           [-8,-12, -6,-5],
-                           [2,2, 3,7],
-                           [10,6, 11,-8],
-                           [6,8, 8,-12],
-                           [-7,10, -6,5],
-                           [-3,-9, -3,9],
-                           [-1,-13, -1,5],
-                           [-3,-7, -3,4],
-                           [-8,-2, -8,3],
-                           [4,2, 12,12],
-                           [2,-5, 3,11],
-                           [6,-9, 11,-13],
-                           [3,-1, 7,12],
-                           [11,-1, 12,4],
-                           [-3,0, -3,6],
-                           [4,-11, 4,12],
-                           [2,-4, 2,1],
-                           [-10,-6, -8,1],
-                           [-13,7, -11,1],
-                           [-13,12, -11,-13],
-                           [6,0, 11,-13],
-                           [0,-1, 1,4],
-                           [-13,3, -9,-2],
-                           [-9,8, -6,-3],
-                           [-13,-6, -8,-2],
-                           [5,-9, 8,10],
-                           [2,7, 3,-9],
-                           [-1,-6, -1,-1],
-                           [9,5, 11,-2],
-                           [11,-3, 12,-8],
-                           [3,0, 3,5],
-                           [-1,4, 0,10],
-                           [3,-6, 4,5],
-                           [-13,0, -10,5],
-                           [5,8, 12,11],
-                           [8,9, 9,-6],
-                           [7,-4, 8,-12],
-                           [-10,4, -10,9],
-                           [7,3, 12,4],
-                           [9,-7, 10,-2],
-                           [7,0, 12,-2],
-                           [-1,-6, 0,-11]], dtype=np.int8))
+cdef char[:, ::1] pos0 = np.array([[  8,  -3],
+       [  4,   2],
+       [-11,   9],
+       [  7, -12],
+       [  2, -13],
+       [  1,  -7],
+       [ -2, -10],
+       [-13, -13],
+       [-13,  -3],
+       [ 10,   4],
+       [-13,  -8],
+       [-11,   7],
+       [  7,   7],
+       [ -4,  -5],
+       [-13,   2],
+       [ -9,   0],
+       [ 12,  -6],
+       [ -3,   6],
+       [ -6, -13],
+       [ 11, -13],
+       [  4,   7],
+       [  5,  -3],
+       [  3,  -7],
+       [ -8,  -7],
+       [ -2,  11],
+       [-13,  12],
+       [ -7,   3],
+       [ -4,   2],
+       [-10, -12],
+       [  5, -12],
+       [  5,  -6],
+       [  1,   0],
+       [  9,  11],
+       [  4,   7],
+       [  2,  -1],
+       [ -4, -12],
+       [ -8,  -5],
+       [  4,  11],
+       [  0,  -8],
+       [-13,  -2],
+       [ -3,  -2],
+       [ -6,   9],
+       [  8,  12],
+       [  0,   9],
+       [  7,  -5],
+       [-13,  -6],
+       [ 10,   7],
+       [ -6,  -3],
+       [ 10,  -9],
+       [-13,   8],
+       [-13,   0],
+       [  3,   3],
+       [  5,   7],
+       [ -1,   7],
+       [  3, -10],
+       [  2,  -4],
+       [-13,   0],
+       [-13,  -7],
+       [-13,   3],
+       [ -7,  12],
+       [  6, -10],
+       [ -9,  -1],
+       [ -2,  -5],
+       [-12,   5],
+       [  3, -10],
+       [ -7,  -7],
+       [ -3,  -2],
+       [  2,   9],
+       [-11, -13],
+       [ -1,   6],
+       [  5,  -3],
+       [ -4, -13],
+       [ -9,  -6],
+       [-12, -10],
+       [ 10,   2],
+       [  7,  12],
+       [ -7, -13],
+       [ -4,   9],
+       [  7,  -1],
+       [ -7,   6],
+       [-13,  11],
+       [ -3,   7],
+       [  7,  -8],
+       [-13,  -7],
+       [  1,  -3],
+       [  2,  -6],
+       [ -4,   3],
+       [ -1, -13],
+       [  7,   1],
+       [  1,  -1],
+       [  9,   1],
+       [ -1,  -9],
+       [-13, -13],
+       [  7,   7],
+       [ 12,  -5],
+       [  6,   3],
+       [  5, -13],
+       [  2, -12],
+       [  3,   8],
+       [  2,   6],
+       [  9, -12],
+       [ -8,   4],
+       [-11,  12],
+       [  1,  12],
+       [  6,  -9],
+       [  2,   3],
+       [  6,   3],
+       [  3,  -3],
+       [  7,   8],
+       [-11,  -5],
+       [-10,  11],
+       [ -5,  -8],
+       [-10,   5],
+       [  8,  -1],
+       [  4,  -6],
+       [-10,  12],
+       [  4,  -2],
+       [ -2,   0],
+       [ -5,  -8],
+       [  7,  -6],
+       [ -9, -13],
+       [ -5, -13],
+       [  8,  -8],
+       [ -9, -11],
+       [  1,  -8],
+       [  7,  -4],
+       [ -2,   1],
+       [ 11,  -6],
+       [-12,  -9],
+       [  3,   7],
+       [  5,   5],
+       [  0,  -4],
+       [ -9,  12],
+       [  0,   7],
+       [ -1,   2],
+       [  5,  11],
+       [  3,   5],
+       [-13,  -4],
+       [ -5,   9],
+       [ -4,  -7],
+       [  6,   5],
+       [ -7,   6],
+       [-13,   6],
+       [  1, -10],
+       [  4,   1],
+       [ -2,  -2],
+       [  2, -12],
+       [ -2, -13],
+       [  4,   1],
+       [ -6, -10],
+       [ -3, -13],
+       [  7,   5],
+       [  4,  -2],
+       [-13,   9],
+       [  7,   1],
+       [  7,  -8],
+       [ -7,  -4],
+       [ -8,  11],
+       [-13,   6],
+       [  2,   4],
+       [ 10,  -5],
+       [ -6,  -5],
+       [  8,  -3],
+       [  2, -12],
+       [-11,  -2],
+       [-12, -13],
+       [-11,   0],
+       [  5,  -3],
+       [ -2, -13],
+       [ -1,  -8],
+       [-13, -11],
+       [-10,  -2],
+       [ -3,   9],
+       [  2,  -3],
+       [ -9, -13],
+       [ -4,   6],
+       [ -4,  12],
+       [ -6, -11],
+       [  6,  -3],
+       [-13,  11],
+       [ 11,  11],
+       [  7,  -5],
+       [ -1,  12],
+       [ -4,  -8],
+       [ -7,   1],
+       [-13, -12],
+       [ -7,  -2],
+       [ -8,   5],
+       [ -5,  -1],
+       [-13,   7],
+       [  1,   5],
+       [  1,   0],
+       [  9,  12],
+       [  5,  -8],
+       [ -1,  11],
+       [ -9,  -3],
+       [ -1, -10],
+       [-13,   1],
+       [  8, -11],
+       [  2, -13],
+       [  7, -13],
+       [-10, -10],
+       [-10,  -8],
+       [  4,  -6],
+       [  3,  12],
+       [ -4,   2],
+       [  5, -13],
+       [  4, -13],
+       [ -9,   9],
+       [  0,   3],
+       [-12,   1],
+       [  3,   2],
+       [-10, -10],
+       [  8, -13],
+       [ -8, -12],
+       [  2,   2],
+       [ 10,   6],
+       [  6,   8],
+       [ -7,  10],
+       [ -3,  -9],
+       [ -1, -13],
+       [ -3,  -7],
+       [ -8,  -2],
+       [  4,   2],
+       [  2,  -5],
+       [  6,  -9],
+       [  3,  -1],
+       [ 11,  -1],
+       [ -3,   0],
+       [  4, -11],
+       [  2,  -4],
+       [-10,  -6],
+       [-13,   7],
+       [-13,  12],
+       [  6,   0],
+       [  0,  -1],
+       [-13,   3],
+       [ -9,   8],
+       [-13,  -6],
+       [  5,  -9],
+       [  2,   7],
+       [ -1,  -6],
+       [  9,   5],
+       [ 11,  -3],
+       [  3,   0],
+       [ -1,   4],
+       [  3,  -6],
+       [-13,   0],
+       [  5,   8],
+       [  8,   9],
+       [  7,  -4],
+       [-10,   4],
+       [  7,   3],
+       [  9,  -7],
+       [  7,   0],
+       [ -1,  -6]], dtype=np.int8)
+
+
+cdef char[:, ::1] pos1 = np.array([[  9,   5],
+       [  7, -12],
+       [ -8,   2],
+       [ 12, -13],
+       [  2,  12],
+       [  1,   6],
+       [ -2,  -4],
+       [-11,  -8],
+       [-12,  -9],
+       [ 11,   9],
+       [ -8,  -9],
+       [ -9,  12],
+       [ 12,   6],
+       [ -3,   0],
+       [-12,  -3],
+       [ -7,   5],
+       [ 12,  -1],
+       [ -2,  12],
+       [ -4,  -8],
+       [ 12,  -8],
+       [  5,   1],
+       [ 10,  -3],
+       [  6,  12],
+       [ -6,  -2],
+       [ -1, -10],
+       [ -8,  10],
+       [ -5,  -3],
+       [ -3,   7],
+       [ -6,  11],
+       [  6,  -7],
+       [  7,  -1],
+       [  4,  -5],
+       [ 11, -13],
+       [  4,  12],
+       [  4,   4],
+       [ -2,   7],
+       [ -7, -10],
+       [  9,  12],
+       [  1, -13],
+       [ -8,   2],
+       [ -2,   3],
+       [ -4,  -9],
+       [ 10,   7],
+       [  1,   3],
+       [ 11, -10],
+       [-11,   0],
+       [ 12,   1],
+       [ -6,  12],
+       [ 12,  -4],
+       [ -8, -12],
+       [ -8,  -4],
+       [  7,   8],
+       [ 10,  -7],
+       [  1, -12],
+       [  5,   6],
+       [  3, -10],
+       [-13,   5],
+       [-12,  12],
+       [-11,   8],
+       [ -4,   7],
+       [ 12,   8],
+       [ -7,  -6],
+       [  0,  12],
+       [ -7,   5],
+       [  8, -13],
+       [ -4,   5],
+       [ -1,  -7],
+       [  5, -11],
+       [ -5, -13],
+       [  0,  -1],
+       [  5,   2],
+       [ -4,  12],
+       [ -9,   6],
+       [ -8,  -4],
+       [ 12,  -3],
+       [ 12,  12],
+       [ -6,   5],
+       [ -3,   4],
+       [ 12,   2],
+       [ -5,   1],
+       [-12,   5],
+       [ -2,  -6],
+       [ 12,  -7],
+       [-11, -12],
+       [ 12,  12],
+       [  3,   0],
+       [ -2, -13],
+       [  1,   9],
+       [  8,  -6],
+       [  3,  12],
+       [ 12,   6],
+       [ -1,   3],
+       [-10,   5],
+       [ 10,  12],
+       [ 12,   9],
+       [  7,  11],
+       [  6,  10],
+       [  2,   3],
+       [  4,  -6],
+       [ 12, -13],
+       [ 10,   3],
+       [ -7,   9],
+       [ -4,  -6],
+       [  2,  -8],
+       [  7,  -4],
+       [  3,  -2],
+       [ 11,   0],
+       [  8,  -8],
+       [  9,   3],
+       [ -6,  -4],
+       [ -5,  10],
+       [ -3,  12],
+       [ -9,   0],
+       [ 12,  -6],
+       [  6, -11],
+       [ -8,   7],
+       [  6,   7],
+       [ -2,  12],
+       [ -5,   2],
+       [ 10,  12],
+       [ -8,  -8],
+       [ -5,  -2],
+       [  9, -13],
+       [ -9,   0],
+       [  1,  -2],
+       [  9,   1],
+       [ -1,  -4],
+       [ 12, -11],
+       [ -6,   4],
+       [  7,  12],
+       [ 10,   8],
+       [  2,   8],
+       [ -5, -13],
+       [  2,  12],
+       [  1,   7],
+       [  7,  -9],
+       [  6,  -8],
+       [ -8,   9],
+       [ -3,  -3],
+       [ -3, -12],
+       [  8,   0],
+       [ -6,  12],
+       [ -5,  -2],
+       [  3,  10],
+       [  8,  -4],
+       [  2, -13],
+       [ 12,  12],
+       [  0,  -6],
+       [  9,   3],
+       [ -3,  -5],
+       [ -1,   1],
+       [ 12, -11],
+       [  5,  -7],
+       [ -9,  -5],
+       [  8,   6],
+       [  7,   6],
+       [ -7,   1],
+       [ -7,  -8],
+       [-12,  -8],
+       [  3,   9],
+       [ 12,   3],
+       [ -6,   7],
+       [  9,  -8],
+       [  2,   8],
+       [-10,   3],
+       [ -7,  -9],
+       [-10,  -5],
+       [ 11,   8],
+       [ -1,  12],
+       [  0,   9],
+       [-12,  -5],
+       [-10,  11],
+       [ -2, -13],
+       [  3,   2],
+       [ -4,   0],
+       [ -3, -10],
+       [ -2,  -7],
+       [ -4,   9],
+       [  6,  11],
+       [ -5,   5],
+       [ 12,   6],
+       [ 12,  -2],
+       [  0,   7],
+       [ -3,  -2],
+       [ -6,   7],
+       [ -8, -13],
+       [ -6,  -8],
+       [ -6,  -9],
+       [ -4,   5],
+       [ -8,  10],
+       [  5, -13],
+       [ 10, -13],
+       [ 10,  -1],
+       [ 10,  -9],
+       [  1, -13],
+       [ -6,   2],
+       [  1,  12],
+       [ -8, -10],
+       [ 10,  -6],
+       [  3,  -6],
+       [ 12,  -9],
+       [ -5,  -7],
+       [ -8, -13],
+       [  8,   5],
+       [  8, -13],
+       [ -3,  -3],
+       [ 10, -12],
+       [  5,  -1],
+       [ -4,   3],
+       [  3,  -9],
+       [ -6,   1],
+       [  4,  -8],
+       [-10,   9],
+       [ 12,  12],
+       [ -6,  -5],
+       [  3,   7],
+       [ 11,  -8],
+       [  8, -12],
+       [ -6,   5],
+       [ -3,   9],
+       [ -1,   5],
+       [ -3,   4],
+       [ -8,   3],
+       [ 12,  12],
+       [  3,  11],
+       [ 11, -13],
+       [  7,  12],
+       [ 12,   4],
+       [ -3,   6],
+       [  4,  12],
+       [  2,   1],
+       [ -8,   1],
+       [-11,   1],
+       [-11, -13],
+       [ 11, -13],
+       [  1,   4],
+       [ -9,  -2],
+       [ -6,  -3],
+       [ -8,  -2],
+       [  8,  10],
+       [  3,  -9],
+       [ -1,  -1],
+       [ 11,  -2],
+       [ 12,  -8],
+       [  3,   5],
+       [  0,  10],
+       [  4,   5],
+       [-10,   5],
+       [ 12,  11],
+       [  9,  -6],
+       [  8, -12],
+       [-10,   9],
+       [ 12,   4],
+       [ 10,  -2],
+       [ 12,  -2],
+       [  0, -11]], dtype=np.int8)