diff --git a/doc/examples/plot_pyramid.py b/doc/examples/plot_pyramid.py new file mode 100644 index 00000000..cacf0689 --- /dev/null +++ b/doc/examples/plot_pyramid.py @@ -0,0 +1,32 @@ +""" +==================== +Build image pyramids +==================== + +This example shows how to build image pyramids. +""" + +import numpy as np +import matplotlib.pyplot as plt + +from skimage import data +from skimage import img_as_float +from skimage.transform import build_gaussian_pyramid + + +image = data.lena() +rows, cols, dim = image.shape +pyramid = tuple(build_gaussian_pyramid(image, downscale=2)) + +display = np.zeros((rows, cols + cols / 2, 3), dtype=np.double) + +display[:rows, :cols, :] = pyramid[0] + +i_row = 0 +for p in pyramid[1:]: + n_rows, n_cols = p.shape[:2] + display[i_row:i_row + n_rows, cols:cols + n_cols] = p + i_row += n_rows + +plt.imshow(display) +plt.show()