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pythonpython-napari

Napari doesn't display full resolution

I want to visualize a large tiff (65Kx35K) files using Napari 4.18 but Napari does not display the image at full resolution. Instead at best it display a lower and pixelized image.

See the attached image where I compare the display between Napari (left) and ImageJ (right). We can see that resolution is different.

Resolution comparison

Is there are option to display images at full resolution?

Solution

  • The problem was that the image was not in a pyramid form at first and Napari does not say anything about it. As a consequence I have to provide a list: the original image plus enough lower resolution images until the smaller image dimension is smaller than GL_MAX_TEXTURE_SIZE which in my case is 16384.

    So the code would become:

    from skimage import io
import napari
img = io.imread('myimage.tif')
viewer = napari.Viewer()
viewer.add_image([img, img[::2,::2], img[::4,::4]])

    The complete answer can be found here.