change back image test

Author: Dou Du

Diff for: .github/workflows/screenshot-comparison.yml

@@ -40,8 +40,6 @@ jobs:
         pip install --upgrade pytest
         pip install --upgrade selenium
         pip install --upgrade Pillow
-        pip install --upgrade imagededup
-
     - uses: nanasess/setup-chromedriver@master
     - run: |
         export DISPLAY=:99

Diff for: test/test_figures.py

@@ -1,27 +1,12 @@
-from imagededup.methods import PHash
+from PIL import Image, ImageChops, ImageStat
 
-# Initialize the hashing method
-phasher = PHash()
+image1 = Image.open('widget-01.png')
+image2 = Image.open('test/widget-sample.png')
 
-# Provide the paths to your images
-image1_path = 'widget-01.png'
-image2_path = 'test/widget-sample.png'
+diff = ImageChops.difference(image1, image2)
+stat = ImageStat.Stat(diff)
 
-# Generate hashes for both images
-hash1 = phasher.encode_image(image_file=image1_path)
-hash2 = phasher.encode_image(image_file=image2_path)
-
-# Calculate the Hamming distance between the two hashes
-distance = phasher.hamming_distance(hash1, hash2)
-
-# Print similarity score
-print(f"Hamming distance between the two images: {distance}")
-
-# Interpret the similarity
-if distance == 0:
-    print("The images are identical!")
-elif distance < 10:  # Adjust threshold as needed
-    print("The images are very similar.")
+if sum(stat.mean) == 0:
+  print('images are the same')
 else:
-    raise Exception("The result is NOT the same as expected. Please check matplotlib version.")
-
+  raise Exception("The result is NOT the same as expected. Please check matplotlib version.")