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Editorial Team
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Asked: 2026-06-02T11:53:40+00:00

I’m using opencv to crop tif files, everthing is fine, except for saving image

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I’m using opencv to crop tif files, everthing is fine, except for saving image to a file – opencv always uses LZW compression, but i don’t need compression on resulting files, i do appreciate opencv’s help in saving my disk drive space, but now is not the right time to do it.
So is there a way to save tif files with specific compression scheme (including no compression) or no?

Original images have no compression scheme applied and i’m using ROI to select area and SaveImage to save it to the target file. Any help appreciated!

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1 Answer

  1. Editorial Team

    The TIFF compression level is hard coded and cant be changed at run time. If you are compiling OpenCV on your machine, then you can edit the compression level in this file

    3rdparty/libtiff/tiff.h

    you will find this line:

    #define     COMPRESSION_LZW     5       /* Lempel-Ziv  & Welch */

    Hope that helps.

    Edit: see this line in the opencv code:
    https://github.com/Itseez/opencv/blob/b46719b0931b256ab68d5f833b8fadd83737ddd1/modules/imgcodecs/src/grfmt_tiff.cpp#L564
    you should be able to pass the desired value for TIFFTAG_COMPRESSION, including COMPRESSION_NONE.

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