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Commit 81b99bfa02345b83b75488a535a9bd85f49d65e6

Authored by Paulo Henrique Junqueira Amorim
1 parent 4cf10836
Exists in master and in 6 other branches beta3, beta4, inv3.0.1, invesalius-libift, usp-navegador, wxgtk3_b5

ADD: Reduced Matrix slice by slice

Showing 1 changed file with 25 additions and 9 deletions   Show diff stats
invesalius/data/imagedata_utils.py
  Diff comments   View file @81b99bf
... ... @@ -4,25 +4,41 @@ import vtk
4 4 # TODO: Test cases which are originally in sagittal/coronal orientation
5 5 # and have gantry
6 6  
7   -def ResampleMatrix(imagedata, value):
  7 +def ResampleMatrix(imagedata, xy_dimension):
8 8 """
9 9 Resample vtkImageData matrix.
10 10 """
11   - spacing = imagedata.GetSpacing()
12 11 extent = imagedata.GetExtent()
13   - size = imagedata.GetDimensions()
  12 + spacing = imagedata.GetSpacing()
14 13  
15   - width = float(size[0])
16   - height = float(size[1]/value)
  14 + if extent[1]==extent[3]:
  15 + f = extent[1]
  16 + x = 0
  17 + y = 1
17 18  
18   - resolution = (height/(extent[1]-extent[0])+1)*spacing[1]
  19 + elif extent[1]==extent[5]:
  20 + f = extent[1]
  21 + x=0
  22 + y=2
19 23  
  24 + elif extent[3]==extent[5]:
  25 + f = extent[3]
  26 + x = 1
  27 + y = 2
  28 +
  29 + factor = xy_dimension/float(f+1)
  30 +
20 31 resample = vtk.vtkImageResample()
21 32 resample.SetInput(imagedata)
22   - resample.SetAxisMagnificationFactor(0, resolution)
23   - resample.SetAxisMagnificationFactor(1, resolution)
24   -
  33 + resample.SetAxisMagnificationFactor(0, factor)
  34 + resample.SetAxisMagnificationFactor(1, factor)
  35 + resample.SetOutputSpacing(spacing[0] * factor, spacing[1] * factor, spacing[2])
  36 + resample.Update()
  37 +
  38 +
25 39 return resample.GetOutput()
  40 +
  41 +
26 42  
27 43 def FixGantryTilt(imagedata, tilt):
28 44 """
... ...