convert nii.gz to png black image.png

[hannamraha]

thank you for the code
When I convert the images, I get a black image.png.
I have no idea why i am getting a black picture.
Can anyone help me?
@monjoybme & @alexlaurence
Many Thanks

[monjoybme]

@hannamraha There could be several reasons for this. Please inspect the image to see whether it has any other pixel values. Radiological images have a wide range of grayscale pixels. As a result, there's a possibility that your images' pixel values are very close to ZERO or Black pixel intensity. There might be windowing-related issues as well. If you share an image, I can inspect that.

[hannamraha]

Thank you for your reply.
Unfortunately I cannot share a picture. The images are MRI and CT.
Data Set Dimensions (voxels) : X:256; Y:256; Z:1.

[monjoybme]

@hannamraha In that case, you have to check if your image contains any pixel values other than ZERO or not. You may try to convert it into binary.

[hannamraha]

@monjoybme thank you for your message.
Ok.

[monjoybme]

@hannamraha Please close the issue if you are satisfied with the solution.