CODEWITHSUNDEEP
imagezipcompressionimage-compressionlzw
Parathan Thiyagalingam
Parathan Thiyagalingam

Reputation: 71

Converting Uncompressed TIF file to a TIF file with compression LZW and ZIP

I used RawTherapee Application in Ubuntu OS to convert RAW file to TIF.

After that, converted that Uncompressed TIF file using ImageMagick with compressions types LZW and ZIP. Then, used ExIFTool to get the compression name. LZW shows correctly but ZIP shows Adobe Deflate as Compression Type.

Is Adobe Deflate and Zip are same? Is ZIP is a lossless compression

Is there any proprietary issue or anything related to Adobe name usage? I like to go always with Open Source tools and application. Please suggest me your concerns.

Upvotes: 0

Views: 2208

Answers (1)

fmw42
fmw42

Reputation: 53164

The issue with your tiff files from your other question about it being pink is that the tiff file is compressed with an old style JPG compression that libtiff used by ImageMagick cannot handle.

convert input-landscape.tiff x.tiff

convert: Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. OJPEGSetupDecode' @ warning/tiff.c/TIFFWarnings/983. convert: Inconsistent number of MCU in codestream. OJPEGDecodeRaw' @ error/tiff.c/TIFFErrors/606.

Upvotes: 0

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