adds a dct basis visualization example

Rock1965 · Mar 26, 2017 · fa26c58 · fa26c58
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diff --git a/README.md b/README.md
@@ -489,6 +489,8 @@ As we can see it resembles the original image but it introduced lots of differen
 >
 > It's important to note that each coefficient doesn't directly map to a single pixel but it's a weighted sum of all pixels. This amazing graph shows how the first and second coefficient is calculated, using weights which are unique for each index.
 >
+> You can also try to [visualize the DCT by looking at a simple image](/dct_better_explained.ipynb) formation over the DCT basis.  
+>
 > ![dct calculation](/i/applicat.jpg "dct calculation")
 >
 > Source: https://www.iem.thm.de/telekom-labor/zinke/mk/mpeg2beg/whatisit.htm

diff --git a/dct_better_explained.ipynb b/dct_better_explained.ipynb
diff --git a/i/dct_basis.png b/i/dct_basis.png
diff --git a/i/z_char_8x8.png b/i/z_char_8x8.png