code reorganisation

diff --git a/commons.py b/commons.py
deleted file mode 100644 (file)
index fcfe469..0000000
--- a/commons.py
+++ /dev/null
@@ -1,7 +0,0 @@
-import os
-
-def clear():
-    if os.name == 'posix':
-        os.system('clear')
-    elif os.name in ('ce', 'nt', 'dos'):
-        os.system('cls')

diff --git a/greyscale_test.py b/greyscale_test.py
deleted file mode 100755 (executable)
index 160bc78..0000000
--- a/greyscale_test.py
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env python
-
-import Image, ImageMath
-
-import im_debug
-
-im = Image.open('./image.jpg')
-im_debug.show(im, 'Original image')
-
-im_l = im.convert('L')
-im_debug.show(im_l, 'ITU-R 601-2 luma transform')
-
-im_rgb = im.convert('L', (float(1)/3, float(1)/3, float(1)/3, 0))
-im_debug.show(im_rgb, '(R+G+B)/3 transform')
-
-s1, s2 = im.size
-im2 = Image.new('L', (s1 * 2, s2))
-im2.paste(im_l, (0, 0, s1, s2))
-im2.paste(im_rgb, (s1, 0, 2*s1, s2))
-im_debug.show(im2, 'Both transforms side by side')
-
-im_debug.show(ImageMath.eval("convert(abs(a - b)*5, 'L')", a=im_l, b=im_rgb), 'Difference')

diff --git a/imago.py b/imago.py
index 552a359..ea9ee6c 100755 (executable)
--- a/imago.py
+++ b/imago.py
@@ -15,8 +15,7 @@ except ImportError, msg:
     sys.exit(1)
 
 import im_debug
-import filters
-from hough import Hough
+import linef
 
 Saving_dir = ''
 Saving_num = 0
@@ -56,96 +55,7 @@ def main():
     global Saving_dir
     Saving_dir = "saved/" + args.file[0][:-4] + "_" + str(image.size[0]) + "/"
     
-    if verbose:
-        print >> sys.stderr, "preprocessing"
-
-    if show_all:
-        do_something(image, "original image")
-
-    im_l = image.convert('L')
-    if show_all:
-        do_something(im_l, "ITU-R 601-2 luma transform")
-
-    if verbose:
-        print >> sys.stderr, "edge detection"
-
-    im_edges = filters.edge_detection(im_l)
-    if show_all:    
-        do_something(im_edges, "edge detection")
-
-    im_h = filters.high_pass(im_edges, 100)
-    if show_all:
-        do_something(im_h, "high pass filters")
-    
-    if verbose:
-        print >> sys.stderr, "hough transform"
-
-    hough1 = Hough(im_h.size)
-    im_hough = hough1.transform(im_h)
-    if show_all:
-        do_something(im_hough, "hough transform")
-
-    im_hough = filters.peaks(im_hough)
-    if show_all:
-        do_something(im_hough, "peak extraction")
-               
-    im_h2 = filters.high_pass(im_hough, 120)
-    if show_all:
-        do_something(im_h2, "second high pass filters")
-
-    im_h2 = filters.components2(im_h2)
-    if show_all:
-        do_something(im_h2, "components centers")
-
-    if verbose:
-        print >> sys.stderr, "second hough transform"
-
-    hough2 = Hough(im_h2.size) 
-    # im_hough might be used instead im_h2, but at the moment it brings a lot of
-    # noise to the second transform, which later confuses the center-finding
-    # mechanism (which is not very robust yet)
-    im_hough2 = hough2.transform(im_h2)
-    if show_all:
-        do_something(im_hough2, "second hough transform")
-
-    im_h3 = filters.high_pass(im_hough2, 120)
-    if show_all:
-        do_something(im_h3, "third high pass filter")
-     
-    im_h3 = filters.components(im_h3)
-    if show_all:
-        do_something(im_h3, "half centers")
-
-    if verbose:
-        print >> sys.stderr, "finding the grid"
-
-    lines_m = hough2.all_lines_h(im_h3)
-    lines = []
-    im_c = im_h2.convert('RGB').convert('RGB', (1, 0.5, 0.5, 0))
-    draw_c = ImageDraw.Draw(im_c)
-
-    for line_l in lines_m:
-        im_line = Image.new('L', im_h2.size)
-        draw = ImageDraw.Draw(im_line)
-        line_points = set()
-        for line in line_l:
-            draw.line(line_from_angl_dist(line, im_h2.size), fill=255, width=7)
-            draw_c.line(line_from_angl_dist(line, im_c.size), fill=(70, 70, 70), width=7)
-            for p in combine(im_h2, im_line):
-                line_points.add(p)
-        for point in line_points:
-            draw_c.point(point, fill=(120, 255, 120))
-        lines.append(hough1.lines_from_list(line_points))
-
-    if show_all:
-        do_something(im_c, "hough x lines")
-
-    image_g = image.copy()
-    draw = ImageDraw.Draw(image_g)
-    for line in [l for s in lines for l in s]:
-        draw.line(line_from_angl_dist(line, image.size), fill=(120, 255, 120))
-    if show_all:
-        do_something(image_g, "the grid")
+    lines = linef.find_lines(image, show_all, do_something, verbose)
 
     intersections = intersections_from_angl_dist(lines, image.size)
     image_g = image.copy()
@@ -200,13 +110,6 @@ def combine(image1, image2):
                 on_both.append((x, y))
     return on_both
 
-def line_from_angl_dist((angle, distance), size):
-    x1 = - size[0] / 2
-    y1 = int(round((x1 * math.sin(angle) - distance) / math.cos(angle))) + size[1] / 2
-    x2 = size[0] / 2 
-    y2 = int(round((x2 * math.sin(angle) - distance) / math.cos(angle))) + size[1] / 2
-    return [(0, y1), (size[0] - 1, y2)]
-
 def intersections_from_angl_dist(lines, size):
     intersections = []
     for (angl1, dist1) in sorted(lines[1], key=itemgetter(1)):

diff --git a/linef.py b/linef.py
new file mode 100755 (executable)
index 0000000..ebfdbea
--- /dev/null
+++ b/linef.py
@@ -0,0 +1,129 @@
+#!/usr/bin/env python
+
+"""Go image recognition lines-finding module"""
+
+import sys
+import math
+
+try:
+    import Image, ImageDraw
+except ImportError, msg:
+    print >> sys.stderr, msg
+    sys.exit(1)
+
+import filters
+from hough import Hough
+
+def find_lines(image, show_all, do_something, verbose):
+
+    if verbose:
+        print >> sys.stderr, "preprocessing"
+
+    if show_all:
+        do_something(image, "original image")
+
+    im_l = image.convert('L')
+    if show_all:
+        do_something(im_l, "ITU-R 601-2 luma transform")
+
+    if verbose:
+        print >> sys.stderr, "edge detection"
+
+    im_edges = filters.edge_detection(im_l)
+    if show_all:    
+        do_something(im_edges, "edge detection")
+
+    im_h = filters.high_pass(im_edges, 100)
+    if show_all:
+        do_something(im_h, "high pass filters")
+    
+    if verbose:
+        print >> sys.stderr, "hough transform"
+
+    hough1 = Hough(im_h.size)
+    im_hough = hough1.transform(im_h)
+    if show_all:
+        do_something(im_hough, "hough transform")
+
+    im_hough = filters.peaks(im_hough)
+    if show_all:
+        do_something(im_hough, "peak extraction")
+               
+    im_h2 = filters.high_pass(im_hough, 120)
+    if show_all:
+        do_something(im_h2, "second high pass filters")
+
+    im_h2 = filters.components2(im_h2)
+    if show_all:
+        do_something(im_h2, "components centers")
+
+    if verbose:
+        print >> sys.stderr, "second hough transform"
+
+    hough2 = Hough(im_h2.size) 
+    # im_hough might be used instead im_h2, but at the moment it brings a lot of
+    # noise to the second transform, which later confuses the center-finding
+    # mechanism (which is not very robust yet)
+    im_hough2 = hough2.transform(im_h2)
+    if show_all:
+        do_something(im_hough2, "second hough transform")
+
+    im_h3 = filters.high_pass(im_hough2, 120)
+    if show_all:
+        do_something(im_h3, "third high pass filter")
+     
+    im_h3 = filters.components(im_h3)
+    if show_all:
+        do_something(im_h3, "half centers")
+
+    if verbose:
+        print >> sys.stderr, "finding the grid"
+
+    lines_m = hough2.all_lines_h(im_h3)
+    lines = []
+    im_c = im_h2.convert('RGB').convert('RGB', (1, 0.5, 0.5, 0))
+    draw_c = ImageDraw.Draw(im_c)
+
+    for line_l in lines_m:
+        im_line = Image.new('L', im_h2.size)
+        draw = ImageDraw.Draw(im_line)
+        line_points = set()
+        for line in line_l:
+            draw.line(line_from_angl_dist(line, im_h2.size), fill=255, width=7)
+            draw_c.line(line_from_angl_dist(line, im_c.size), fill=(70, 70, 70), width=7)
+            for p in combine(im_h2, im_line):
+                line_points.add(p)
+        for point in line_points:
+            draw_c.point(point, fill=(120, 255, 120))
+        lines.append(hough1.lines_from_list(line_points))
+
+    if show_all:
+        do_something(im_c, "hough x lines")
+
+    image_g = image.copy()
+    draw = ImageDraw.Draw(image_g)
+    for line in [l for s in lines for l in s]:
+        draw.line(line_from_angl_dist(line, image.size), fill=(120, 255, 120))
+    if show_all:
+        do_something(image_g, "the grid")
+    
+    return lines
+
+def combine(image1, image2):
+    im_l1 = image1.load()
+    im_l2 = image2.load()
+
+    on_both = []
+
+    for x in xrange(image1.size[0]):
+        for y in xrange(image1.size[1]):
+            if im_l1[x, y] and im_l2[x, y]:
+                on_both.append((x, y))
+    return on_both
+
+def line_from_angl_dist((angle, distance), size):
+    x1 = - size[0] / 2
+    y1 = int(round((x1 * math.sin(angle) - distance) / math.cos(angle))) + size[1] / 2
+    x2 = size[0] / 2 
+    y2 = int(round((x2 * math.sin(angle) - distance) / math.cos(angle))) + size[1] / 2
+    return [(0, y1), (size[0] - 1, y2)]