Fix failing test; removed alpha channel

Author: Bernarda Petek

requirements.txt

@@ -1,4 +1,4 @@
-numpy>=1.3
+numpy>=1.3,<2
 imageio~=2.9.0
 imageio-ffmpeg==0.4.7
 matplotlib>=3
@@ -9,4 +9,4 @@ scikit-image>=0.17
 networkx>=2.7.1
 scikit-learn>=0.24
 opencv-python~=4.5.5
-pandas~=1.4.3
+pandas~=1.4.3

test/test_bootplot.py

@@ -78,9 +78,9 @@ def test_bmp():
 
 def test_merge():
     np.random.seed(0)
-    images = np.random.randint(low=0, high=256, size=(25, 100, 100, 4))
+    images = np.random.randint(low=0, high=256, size=(25, 100, 100, 3))
     merged = merge_images(images)
-    assert merged.shape == (100, 100, 4)
+    assert merged.shape == (100, 100, 3)
     assert np.min(merged) >= 0
     assert np.max(merged) <= 255
     assert merged.dtype == np.uint8