vtkPNGReader() equivalent in vtk.js

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1

Hello everyone,
I am trying to read a 2d png image stack in vtk for volume rendering. Is there any equivalent libarary of vtkPNGReader in vtk.js. Any help and guidance would be greatly appreciated.

Best Regards

2

itk.js is probably the way to go unless you can find another JS library that give you the corresponding TypedArray that you are looking for.

3

What is your solution to the problem?

4
5

I have written a python script using vtkPNGReader() and vtkImageAppend() which creates a .vti file for the stacked 2d png images.

def ReadImages(files):
reader = vtk.vtkPNGReader()
image3D = vtk.vtkImageAppend()
image3D.SetAppendAxis(2)

for f in files:
    reader.SetFileName(f)
    reader.Update()
    t_img = vtk.vtkImageData()
    t_img.DeepCopy(reader.GetOutput())
    image3D.AddInputData(t_img)

image3D.Update()
writer = vtk.vtkXMLImageDataWriter()
writer.SetInputData(image3D.GetOutput())
writer.SetFileName("volume.vti")
writer.Update()

return image3D.GetOutput()

I hope this helps.

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