color circles

Author: furas

pillow/color circles/README.md

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+## main.py
+
+Using grayscale layers to create `RGB` image with color circles.
+ 
+![#1](images/normal_rgb.png?raw=true)   
+
+Using inverted layers.
+
+![#1](images/inverted_rgb.png?raw=true)   
+
+---
+
+### Merging images using ImageMagick
+
+    $ montage -tile 4x1 normal_layer_r.png normal_layer_g.png normal_layer_b.png normal_rgb.png normal_result.png
+
+    $ montage -background black -tile 4x1 inverted_layer_r.png inverted_layer_g.png inverted_layer_b.png inverted_rgb.png inverted_result.png
+
+![#1](images/normal_result.png?raw=true)   
+
+![#1](images/inverted_result.png?raw=true)   
+

pillow/color circles/images/inverted_layer_b.png

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+from PIL import Image, ImageDraw
+
+def synthese(red=255, green=255, blue=255, background=0, file_prefix=''):
+
+    # layers in greyscale
+    layer_R = Image.new('L', (450, 450), background)
+    layer_G = Image.new('L', (450, 450), background)
+    layer_B = Image.new('L', (450, 450), background)
+    
+    # draw circle on red layer
+    draw_R = ImageDraw.Draw(layer_R)
+    draw_R.ellipse((10,150,300,440), red)
+    
+    # draw circle on green layer
+    draw_G = ImageDraw.Draw(layer_G)
+    draw_G.ellipse((150,150,440,440), green)
+    
+    # draw circle on blue layer
+    draw_B = ImageDraw.Draw(layer_B)
+    draw_B.ellipse((75,10,375,300), blue)
+    
+    #layer_R.show()               
+    #layer_G.show()               
+    #layer_B.show()
+
+    layer_R.save(file_prefix + 'layer_r.png')
+    layer_G.save(file_prefix + 'layer_g.png')
+    layer_B.save(file_prefix + 'layer_b.png')
+    
+    # create RGB image using greyscale layers
+    image_RGB = Image.merge('RGB', (layer_R, layer_G, layer_B))
+    
+    # show it
+    image_RGB.show()               
+    image_RGB.save(file_prefix + 'rgb.png')
+    
+synthese(255, 255, 255, 0, 'normal_')
+synthese(0, 0, 0, 255, 'inverted_')