Implement landmark plot function

test/test_falign/test_landmarks.py

@@ -1,8 +1,9 @@
 from pathlib import Path
 
-from matplotlib import pyplot
+from skimage.io import imread
 
 from falign.landmarks import get_landmarks
+from falign.plot import imsave_with_landmarks
 
 
 def test_get_landmarks():
@@ -12,11 +13,8 @@ def test_get_landmarks():
 
     assert landmarks.shape == (68, 2)
 
-    fig, ax = pyplot.subplots()
-    ax.imshow(pyplot.imread(path_image))
-    ax.scatter(landmarks[:, 0], landmarks[:, 1], s=1)
-    ax.axis("off")
-    ax.margins(0)
-    ax.set_aspect("equal")
-    fig.tight_layout(pad=0)
-    fig.savefig(dir_gallery / "test_get_landmarks.jpg")
+    imsave_with_landmarks(
+        dir_gallery / "test_get_landmarks.jpg",
+        imread(path_image), landmarks,
+        size=5
+    )