Partial submission ready

Makefile

@@ -0,0 +1,14 @@
+all:
+	$(MAKE) -C igraph
+	g++ image_to_graph.cc -o image_to_graph -Wall -ligraph `pkg-config --cflags --libs opencv`
+
+config:
+	cd igraph && ./configure && cd ..
+
+.PHONY: clean allclean
+
+clean:
+	rm -f image_to_graph
+
+allclean:
+	$(MAKE) -C igraph clean

README.md

@@ -1,9 +1,12 @@
+You'll need OpenCV for this. The igraph package is also needed and it's included.
+
 Compile:
 ```
-g++ image_to_graph.cc -o image_to_graph -Wall -ligraph -fopenmp `pkg-config --cflags --libs opencv`
+make config
+make
 ```
 
 Run stack:
 ```
-./image_to_graph lena.jpg && python display_graph.py
+./image_to_graph <input_image> && python display_graph.py <input_image>
 ```

display_graph.py

@@ -3,11 +3,12 @@
 import matplotlib.pyplot as pl
 import networkx as nx
 import numpy as np
+import sys
+import cv2
 
 print('Done.')
 ##############
 
-
 ## Build graph
 print('Rebuilding graph... ', end='', flush=True)
 
@@ -19,15 +20,38 @@
 
 print('Done.')
 
+## Build layout
 print('Making layout... ', end='', flush=True)
 
 layout = {}
 for row in range(rows):
     for col in range(cols):
         layout[row*cols+col] = [col,rows-row]
 
+nx.draw_networkx_edges(G, pos=layout)
+pl.savefig('image_to_graph.out.png')
+
 print('Done.')
 
-## Check results
-nx.draw_networkx_edges(G, pos=layout)
-pl.show()
+## Display results
+print('Displaying (\'q\' to quit)... ', end='', flush=True)
+
+imga = cv2.imread(sys.argv[1], cv2.IMREAD_GRAYSCALE)
+imgb = cv2.imread('image_to_graph.out.png', cv2.IMREAD_GRAYSCALE)
+
+ha,wa = imga.shape[:2]
+hb,wb = imgb.shape[:2]
+
+output = np.zeros((max(ha,hb),wa+wb), np.uint8) + 255
+output[:ha,:wa]      = imga
+output[:hb,wa:wa+wb] = imgb
+
+cv2.imshow('Grayscale Image to Complex Network (\'q\' to quit)', output)
+
+while(True):
+    if cv2.waitKey(0) == ord('q'):
+        break
+
+cv2.destroyAllWindows()
+
+print('Done.')

igraph/AUTHORS

@@ -0,0 +1,2 @@
+Gabor Csardi <[email protected]>
+Tamas Nepusz <[email protected]>