SimpleITK  
Python/ImageCreateAndSet.py
1 #!/usr/bin/env python
2 # =========================================================================
3 #
4 # Copyright NumFOCUS
5 #
6 # Licensed under the Apache License, Version 2.0 (the "License");
7 # you may not use this file except in compliance with the License.
8 # You may obtain a copy of the License at
9 #
10 # http://www.apache.org/licenses/LICENSE-2.0.txt
11 #
12 # Unless required by applicable law or agreed to in writing, software
13 # distributed under the License is distributed on an "AS IS" BASIS,
14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 # See the License for the specific language governing permissions and
16 # limitations under the License.
17 #
18 # =========================================================================
19 
20 
21 import os
22 
23 import SimpleITK as sitk
24 
25 xImg = sitk.Image(256, 256, sitk.sitkFloat32)
26 yImg = sitk.Image(256, 256, sitk.sitkFloat32)
27 
28 for y in range(0, xImg.GetSize()[1]):
29  for x in range(0, xImg.GetSize()[0]):
30  xImg.SetPixel(x, y, x)
31  yImg[x, y] = y
32 
33 sigma = 50
34 
35 xImg = sitk.Subtract(xImg, xImg.GetSize()[0] / 2)
36 yImg = yImg - yImg.GetSize()[1] / 2
37 
38 gaussianImg = sitk.Exp(-1 * (xImg**2 + yImg**2) / (2.0 * sigma**2))
39 
40 if "SITK_NOSHOW" not in os.environ:
41  sitk.Show(gaussianImg, "Gaussian Blob")
itk::simple::Image
The Image class for SimpleITK.
Definition: sitkImage.h:76
itk::simple::Show
void SITKIO_EXPORT Show(const Image &image, const std::string &title="", const bool debugOn=ProcessObject::GetGlobalDefaultDebug())
itk::simple::Subtract
Image Subtract(double constant, const Image &image2)
itk::simple::Exp
Image Exp(const Image &image1)
Computes the exponential function of each pixel.