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Date: Mon, 1 Apr 2013 19:20:32 +0530
Subject: Error in working with Dict
From: inshu chauhan <insideshoes@gmail.com>
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I have this program which is working with 2 dictionaries segments,
class_counts.. but I am getting an error mentioned below the programme.

import cv
from itertools import *
from math import floor, sqrt, ceil
from numpy import array, dot, subtract, add, outer, argmax, linalg as lin


def Computesegclass(segimage, refimage):
    f = open("Pixel_count_with_region_num_trial1.txt", "w")
    segments = {}
    class_count = {}
    for y in xrange(0, segimage.height):
        for x in xrange(0, segimage.width):

            if segimage[y,x] == (0.0, 0.0, 0.0):
                continue
            else:
                seg_color = segimage[y,x]
                blue = int(seg_color[0])
                green = int(seg_color[1])
                red = int(seg_color[2])
                region_num = blue + 256 * green + 65536 * red
                #print region_num
                segments[region_num] = segments.setdefault(region_num, 0) +
1
                #print segments

                class_color = refimage[y,x]

                if class_color == (0.0,0.0,0.0):
                    class_number = 0      # No class
                elif class_color == (0.0,255.0,0.0):
                    class_number = 1   # Trees
                elif class_color == (255.0, 0.0, 128.0):
                    class_number = 2   # Buildings
                elif class_color == (0.0,0.0,255.0):
                    class_number = 3    # Automobiles
                elif class_color == (255.0, 255.0, 0.0):
                    class_number = 4    # Road Points
                elif class_color == (0.0, 64.0, 128.0):
                    class_number = 5    # Tree trunks nad branches
                elif class_color == (255.0, 0.0 ,0.0):
                    class_number = 6    # Poles
                elif class_color == (255.0, 0.0, 255.0):
                    class_number = 7    # Traffic Lights
                else:
                    class_number = 0     # Gray Pixel

                class_count.setdefault(region_num, [0, 0, 0, 0, 0, 0, 0,
0])[class_number] += 1
            # print class_count
for k in sorted(class_count.iterkeys()):
    i = argmax(class_count[k])
    print >> f, i

if __name__== "__main__":
    segimage = cv.LoadImageM(r"C:\Users\inshu\Desktop\Masters
Thesis\Segmentation\segmentation_numbers_00000.tif",
cv.CV_LOAD_IMAGE_UNCHANGED)
    refimage = cv.LoadImageM(r"C:\Users\inshu\Desktop\Masters
Thesis\Segmentation\Hand_Classified1.tif", cv.CV_LOAD_IMAGE_UNCHANGED)
    print segimage
    Computesegclass(segimage, refimage)


ERROR :

Traceback (most recent call last):
  File "C:\Users\inshu\Desktop\seg.py", line 49, in <module>
    for k in sorted(class_count.iterkeys()):
NameError: name 'class_count' is not defined

I know this error is because I have initialized both dicts inside the
function, But why dicts are not saved out, if I intialize the dicts outside
the function, the processing is still done inside and end result I am
getting is an empty dict.


Thanks in Advance for suggestions!!!!

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Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">I have this program which is working with 2 dictionaries s=
egments, class_counts.. but I am getting an error mentioned below the progr=
amme.=A0<div><br></div><div><div>import cv</div><div>from itertools import =
*</div>
<div>from math import floor, sqrt, ceil</div><div>from numpy import array, =
dot, subtract, add, outer, argmax, linalg as lin</div><div><br></div><div><=
br></div><div>def Computesegclass(segimage, refimage): =A0</div><div>=A0 =
=A0 f =3D open(&quot;Pixel_count_with_region_num_trial1.txt&quot;, &quot;w&=
quot;)</div>
<div>=A0 =A0 segments =3D {}</div><div>=A0 =A0 class_count =3D {}</div><div=
>=A0 =A0 for y in xrange(0, segimage.height):</div><div>=A0 =A0 =A0 =A0 for=
 x in xrange(0, segimage.width):</div><div><br></div><div>=A0 =A0 =A0 =A0 =
=A0 =A0 if segimage[y,x] =3D=3D (0.0, 0.0, 0.0):</div>
<div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 continue</div><div>=A0 =A0 =A0 =A0 =A0=
 =A0 else:</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 seg_color =3D segimage=
[y,x]</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 blue =3D int(seg_color[0])<=
/div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 green =3D int(seg_color[1])</div>=
<div>
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 red =3D int(seg_color[2])</div><div>=A0 =A0=
 =A0 =A0 =A0 =A0 =A0 =A0 region_num =3D blue + 256 * green + 65536 * red</d=
iv><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 #print region_num</div><div>=A0 =A0=
 =A0 =A0 =A0 =A0 =A0 =A0 segments[region_num] =3D segments.setdefault(regio=
n_num, 0) + 1</div>
<div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 #print segments</div><div>=A0 =A0 =A0 =
=A0 =A0 =A0 =A0 =A0=A0</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 class_colo=
r =3D refimage[y,x]</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=A0</div><div>=
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if class_color =3D=3D (0.0,0.0,0.0):</div><=
div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 class_number =3D 0 =A0 =A0 =A0#=
 No class</div>
<div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 elif class_color =3D=3D (0.0,255.0,0.0=
):</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 class_number =3D 1 =A0=
 # Trees=A0</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 elif class_color =3D=
=3D (255.0, 0.0, 128.0):</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
class_number =3D 2 =A0 # Buildings=A0</div>
<div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 elif class_color =3D=3D (0.0,0.0,255.0=
):</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 class_number =3D 3 =A0=
 =A0# Automobiles=A0</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 elif class_c=
olor =3D=3D (255.0, 255.0, 0.0):</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 class_number =3D 4 =A0 =A0# Road Points=A0</div>
<div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 elif class_color =3D=3D (0.0, 64.0, 12=
8.0):</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 class_number =3D 5 =
=A0 =A0# Tree trunks nad branches=A0</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 elif class_color =3D=3D (255.0, 0.0 ,0.0):</div><div>=A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0 =A0 =A0 class_number =3D 6 =A0 =A0# Poles =A0</div>
<div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 elif class_color =3D=3D (255.0, 0.0, 2=
55.0):</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 class_number =3D 7=
 =A0 =A0# Traffic Lights</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 else:</d=
iv><div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 class_number =3D 0 =A0 =A0 =
# Gray Pixel</div>
<div>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=A0</div><div>=A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 class_count.setdefault(region_num, [0, 0, 0, 0, 0, 0, 0, 0])[class_=
number] +=3D 1</div><div>=A0 =A0 =A0 =A0 =A0 =A0 # print class_count</div><=
div>for k in sorted(class_count.iterkeys()):</div>
<div>=A0 =A0 i =3D argmax(class_count[k])</div><div>=A0 =A0 print &gt;&gt; =
f, i=A0</div><div><br></div><div>if __name__=3D=3D &quot;__main__&quot;:</d=
iv><div>=A0 =A0 segimage =3D cv.LoadImageM(r&quot;C:\Users\inshu\Desktop\Ma=
sters Thesis\Segmentation\segmentation_numbers_00000.tif&quot;, cv.CV_LOAD_=
IMAGE_UNCHANGED)</div>
<div>=A0 =A0 refimage =3D cv.LoadImageM(r&quot;C:\Users\inshu\Desktop\Maste=
rs Thesis\Segmentation\Hand_Classified1.tif&quot;, cv.CV_LOAD_IMAGE_UNCHANG=
ED)</div><div>=A0 =A0 print segimage</div><div>=A0 =A0 Computesegclass(segi=
mage, refimage)</div>
</div><div><br></div><div><br></div><div style>ERROR :=A0</div><div style><=
br></div><div style><div>Traceback (most recent call last):</div><div>=A0 F=
ile &quot;C:\Users\inshu\Desktop\seg.py&quot;, line 49, in &lt;module&gt;</=
div>
<div>=A0 =A0 for k in sorted(class_count.iterkeys()):</div><div>NameError: =
name &#39;class_count&#39; is not defined</div><div><br></div><div style>I =
know this error is because I have=A0initialized=A0both dicts inside the fun=
ction, But why dicts are not saved out, if I intialize the dicts outside th=
e function, the processing is still done inside and end result I am getting=
 is an empty dict.</div>
<div style><br></div><div style><br></div><div style>Thanks in Advance for =
suggestions!!!!=A0</div></div><div><br></div></div>

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