diff --git a/pages/CSE559A/CSE559A_L22.md b/pages/CSE559A/CSE559A_L22.md
index f460dd2..0c707f1 100644
--- a/pages/CSE559A/CSE559A_L22.md
+++ b/pages/CSE559A/CSE559A_L22.md
@@ -46,13 +46,13 @@ Algorithm outline:
 
 #### Effect of noise
 
-![Hough transform with noise](./images/hough_transform_noise.png)
+![Hough transform with noise](https://notenextra.trance-0.com/CSE559A/Hough_transform_noise.png)
 
 Noise makes the peak fuzzy.
 
 #### Effect of outliers
 
-![Hough transform with outliers](./images/hough_transform_outliers.png)
+![Hough transform with outliers](https://notenextra.trance-0.com/CSE559A/Hough_transform_outliers.png)
 
 Outliers can break the peak.
 
@@ -90,7 +90,7 @@ Training:
 
 Testing:
 
-- Given test image, extract patches, match to codebook entry 
+- Given test image, extract patches, match to codebook entry
 - Cast votes for possible positions of object center
 - Search for maxima in voting space
 - Extract weighted segmentation mask based on stored masks for the codebook occurrences
diff --git a/public/CSE559A/Hough_transform_noise.png b/public/CSE559A/Hough_transform_noise.png
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diff --git a/public/CSE559A/Lucas_Kanade_coarse-to-fine_refinement.png b/public/CSE559A/Lucas_Kanade_coarse-to-fine_refinement.png
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