MATLAB Answers

Can you read multiple layers from a .JPX file?

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Calvin Eiber
Calvin Eiber on 27 Mar 2020
Answered: Abhisek Pradhan on 30 Mar 2020
I am trying to work with (read & write) .jpx files which contain multiple layers, much like a .TIFF file.
using imread, you can read files which contain multiple images (such as a .TIFF file) like so:
img = imread('my_image_stack.tif',3); % to get the third frame in the image stack
I can confirm using imfinfo that my .jpx file contains multiple images, and when I open my file in e.g. Imaris I can see my image stack:
info = imfinfo('my_image_stack.jpx'); % get info about file
image_size_bytes = info.Width * info.Height * info.BitDepth / 8;
images_per_file = info.FileSize / image_size_bytes
% >> images_per_file = 11.2503
Is there a way to get the other frames of my image using matlab, or do I need to convert all of my .jpx files to .tiffs?

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Answers (1)

Abhisek Pradhan
Abhisek Pradhan on 30 Mar 2020
I could understand you want to read each layer using A = imread(___ ,index ), which applies only to GIF, PGM, PBM, PPM, CUR, ICO, TIF, and HDF4 files.
So, converting the JPX file into any of the file format may be a possible way to achieve it.

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