SphinxExamples/src/Core/Common/SetPixelValueInOneImage/Code.py

#!/usr/bin/env python
 
# Copyright NumFOCUS
#
# 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
#
#        https://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.
 
import itk
import argparse
 
parser = argparse.ArgumentParser(description="Set Pixel Value In One Image.")
parser.add_argument("output_image")
args = parser.parse_args()
 
Dimension = 2
 
PixelType = itk.UC
 
ImageType = itk.Image[PixelType, Dimension]
 
region = itk.ImageRegion[Dimension]()
 
start = itk.Index[Dimension]()
start.Fill(0)
 
region.SetIndex(start)
 
size = itk.Size[Dimension]()
size[0] = 200
size[1] = 300
 
region.SetSize(size)
 
image = ImageType.New()
image.SetRegions(region)
image.Allocate()
image.FillBuffer(itk.NumericTraits[PixelType].ZeroValue())
 
pixelIndex = itk.Index[Dimension]()
 
for r in range(50):
    pixelIndex[0] = 4 * r
    pixelIndex[1] = 4 * r
 
    image.SetPixel(pixelIndex, 128)
 
    pixelIndex[0] = 4 * r
    pixelIndex[1] = 200 - 4 * r
 
    image.SetPixel(pixelIndex, 255)
 
for r in range(25):
    pixelIndex[0] = 8 * r
    pixelIndex[1] = 200 + 4 * r
 
    image.SetPixel(pixelIndex, 128)
 
    pixelIndex[0] = 8 * r
    pixelIndex[1] = 250
 
    image.SetPixel(pixelIndex, 180)
 
pixelIndex[0] = 95
pixelIndex[1] = 150
 
image.SetPixel(pixelIndex, 200)
 
pixelIndex[0] = 100
pixelIndex[1] = 150
 
image.SetPixel(pixelIndex, 200)
 
pixelIndex[0] = 105
pixelIndex[1] = 150
 
image.SetPixel(pixelIndex, 200)
 
pixelIndex[0] = 100
pixelIndex[1] = 155
 
image.SetPixel(pixelIndex, 200)
 
pixelIndex[0] = 100
pixelIndex[1] = 145
 
image.SetPixel(pixelIndex, 200)
 
itk.imwrite(image, args.output_image)