From: Tomas Musil <tomik.musil@gmail.com>
Date: Wed, 24 Oct 2012 12:12:19 +0000 (+0200)
Subject: pcf -- combine
X-Git-Url: http://git.tomasm.cz/imago.git/commitdiff_plain/04fed003945a46c6399db7eb94e81f2b215b87a8

pcf -- combine
---

diff --git a/gridf.py b/gridf.py
index bc84ea8..50beb81 100644
--- a/gridf.py
+++ b/gridf.py
@@ -3,6 +3,7 @@ import Image, ImageDraw, ImageFilter
 from manual import lines as g_grid, l2ad, intersection, line as g_line
 from intrsc import intersections_from_angl_dist
 from linef import line_from_angl_dist
+import pcf
 
 class GridFittingFailedError(Exception):
     pass
@@ -49,12 +50,12 @@ def error_surface(lines, a, b, c, d, hough, size, v1):
     Y = []
     Z = []
     s = 0.001
-    k = 5
+    k = 200
     for i in range(-k, k):
         X.append(range(-k, k))
         Y.append(2*k*[i])
         
-    start = time.clock()
+    start = time.time()
     for x in range(0, 2*k):
         try:
             Z.append([distance(lines, get_grid(a + X[x][y] * s * v1, b + Y[x][y] * s * v1, 
@@ -62,7 +63,7 @@ def error_surface(lines, a, b, c, d, hough, size, v1):
                               size) for y in range(0, 2* k)])
         except Exception:
             Z.append(Z[-1])
-        o = ((time.clock() - start) * (2 * k - (x + 1))) / (60 * (x + 1))
+        o = ((time.time() - start) * (2 * k - (x + 1))) / (60 * (x + 1))
         print x + 1, "{0} h {1:2.2f} m".format(int(o) / 60, o % 60)
     s_file = open('surface' + str(k), 'w')
     pickle.dump((X, Y, Z), s_file)
@@ -154,7 +155,8 @@ def distance(lines, grid, size):
     for line in grid[0] + grid[1]:
         dr_g.line(line, width=1, fill=255)
     #im_g = im_g.filter(MyGaussianBlur(radius=3))
-    im_d, distance = combine(im_l, im_g)
+    #im_d, distance = combine(im_l, im_g)
+    distance = pcf.combine(im_l.tostring(), im_g.tostring())
     return distance
 
 def combine(bg, fg):
diff --git a/pcf.c b/pcf.c
index 2a43188..1682dbb 100644
--- a/pcf.c
+++ b/pcf.c
@@ -1,6 +1,30 @@
 #include <Python.h>
 #include <math.h>
 
+static PyObject* py_combine(PyObject* self, PyObject* args)
+{
+	const unsigned char *im_bg;
+	const unsigned char *im_fg;
+	int size;
+
+	int i;
+	long int sum;
+	int area;
+
+	if (!PyArg_ParseTuple(args, "s#s#", &im_bg, &size, &im_fg, &size)) return NULL;
+
+	sum = 0;
+	area = 0;
+	for (i=0; i < size; i++) {
+		if (im_fg[i]){
+			sum += im_bg[i];
+			area++;
+		}
+	}
+
+	return Py_BuildValue("d", ((double) sum) / area);
+}
+
 static PyObject* py_hough(PyObject* self, PyObject* args)
 {
 	const unsigned char *image;
@@ -128,6 +152,7 @@ static PyObject* py_edge(PyObject* self, PyObject* args)
 
 
 static PyMethodDef myModule_methods[] = {
+	{"combine", py_combine, METH_VARARGS},
 	{"edge", py_edge, METH_VARARGS},
 	{"hough", py_hough, METH_VARARGS},
 	{NULL, NULL}