How to save very large image to original resolution

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CivilEngineer27 2021-8-24

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https://ww2.mathworks.cn/matlabcentral/answers/1440114-how-to-save-very-large-image-to-original-resolution

回答： Yair Altman 2021-8-26

I have a very large image saved via .tif file (70,499 x 8400). I am trying to plot and fill polygons on this image that are the result from an artifical intelligence neural network (points are in .JSON format). I have no problem plotting the images on the large image, my trouble comes from trying to save the figure to the original resolution. I have tried using export_fig('filename', '-native') but errors keep popping up saying that the image is too large, I have tried using 'imwrite' as well as 'print' with no success. Is there anyway to to achieve this?

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CivilEngineer27 2021-8-25

I guess my question revolves how to use 'imwrite' in order to save the image to original resolution after I have made my subsequent plots on the image?

DGM 2021-8-25

Since you'd mentioned imwrite(), I was assuming that you had already been able to apply those to the image itself.

I don't know what exactly you're doing with plot tools, but if you're using ROI tools, you can use createMask() and basic image operations to alter the underlying image. If that's something that you need to figure out how to do, I suggest coming up with a reduced-size conceptual example of the things you're trying to embed and we can see what the options are.

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Answer 1

Image Analyst 2021-8-25

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https://ww2.mathworks.cn/matlabcentral/answers/1440114-how-to-save-very-large-image-to-original-resolution#answer_774494

Did you try exportgraphics()?

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Image Analyst 2021-8-26

Then try export_fig

export_fig

CivilEngineer27 2021-8-26

Unfortunately, I have. Since the image is so large (the image is an orthomosaic map constructed from drone images) export_fig is unable to process an image of that size and resolution.

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