Do some image compression tests~

crawler_software/raspberry_pi/tests/color_compression/compress.py

@@ -0,0 +1,9 @@
+from PIL import Image
+
+im = Image.open('still.jpg')
+
+# using Image.ADAPTIVE to avoid dithering
+for i in range(8, 0, -1):
+    out = im.convert('P', palette=Image.ADAPTIVE, colors=i)
+
+    out.save(f'out_{i}_bits.png')