In <mailman.3191.1363015388.2939.python-l...@python.org> inshu chauhan
<insidesh...@gmail.com> writes:
> --14dae93408ffe4594104d7a7bf0c
> Content-Type: text/plain; charset=ISO-8859-1
> I am trying to create a dictionary with a key and its values seraching from
> a data set. But something is going wrong. This is the first time I am
> working with dicts.
> My code is :
> import cv
> def Computesegclass(segimage):
> num_pixel = 0
> 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:
> color = segimage[y,x]
> blue = color[0]
> green = color[1]
> red = color[2]
> region_num = blue + 256 * green + 65536 * red
> print region_num
> segments = dict({region_num : num_pixel})
You're creating a new segments dictionary for each pixel, overwriting
the previous one. Instead, you probably want to create an empty dictionary
at the top of your function.
> if region_num == region_num:
This if statement will always evaluate true, because you're comparing
region_num to itself.
> num_pixel = +1
This doesn't store the value of num_pixel in the dictionary. You probably
want to do this instead:
segments[region_num] += 1
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