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#!/usr/bin/env python
#=========================================================================
#
# Copyright Insight Software Consortium
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0.txt
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#=========================================================================
from __future__ import print_function
import SimpleITK as sitk
import os
xImg = sitk.Image( 256, 256, sitk.sitkFloat32 )
yImg = sitk.Image( 256, 256, sitk.sitkFloat32 )
for y in range( 0, xImg.GetSize()[1] ):
for x in range( 0, xImg.GetSize()[0] ):
xImg.SetPixel( x, y, x )
yImg[x, y] = y
sigma = 50
xImg = sitk.Subtract( xImg, xImg.GetSize()[0] / 2 )
yImg = yImg - yImg.GetSize()[1] / 2
gaussianImg = sitk.Exp( -1 * (xImg**2 + yImg**2) / (2.0 * sigma**2) )
if ( not "SITK_NOSHOW" in os.environ ):
sitk.Show( gaussianImg, "Gaussian Blob" )
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