Deskew TIFF (JPEG compressed) and Output JPEG compressed remains LZW

[nsjobs]

Dear,
Am using the 1.30 and also the GUI, and bot ouput my TIFF files LZW compressed and not JPEG...
The -c tjpeg for example does not seem to properly compress as JPEG... The output seems to be LZW.
Even the -c j95,tjpeg found in a sample outputs as LZW
Any tips helping me focusing the right command line params ?
Thx for clues
Best

Looked against #30,and #54 without success :/

[galfar]

I've tested the latest versions of CLI and GUI and proper JPEG in TIFF was saved, both in Windows and Linux. Older CLI v1.30 also produced JPEG in TIFF, older GUI did no have the compression options.

What OS did you use?

[nsjobs]

Dear, Am using Windows 10 and I doget A.30, but whatever compress and format, file remains the same, unless I made a mess ! Was using a sample found on the Git or some help forum Thanks for helping Le lun. 28 avr. 2025 à 01:19, Marek Mauder ***@***.***> a écrit :

…

*galfar* left a comment (galfar/deskew#61) <#61 (comment)> I've tested the latest versions of CLI and GUI and proper JPEG in TIFF was saved, both in Windows and Linux. Older CLI v1.30 also produced JPEG in TIFF, older GUI did no have the compression options. What OS did you use? — Reply to this email directly, view it on GitHub <#61 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BETU25IOACF3UZBH6KKMS3T23VQXVAVCNFSM6AAAAABWZQIRLGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDQMZTGY4DSMBRGM> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Nicolas

[galfar]

Could you upload here some test input image and deskew's output image, where this problem is occurring?

[nsjobs]

Dear,
Some stupid files I just rotated a TIFF saved as JPEG and LZW, that both output as LZW...
If does deskew properly, but all files what ever source compression I have output as LZW...
BTW, would you please confirm command line (sample attached come from the GUI)

Samples.zip

Best

[nsjobs]

Hi, Any update ? Are the files relevant ? Had the same exact issue with scanned images... thx for feed back Best Le lun. 28 avr. 2025 à 11:38, Marek Mauder ***@***.***> a écrit :

…

*galfar* left a comment (galfar/deskew#61) <#61 (comment)> Could you upload here some test input image and deskew's output image, where this problem is occurring? — Reply to this email directly, view it on GitHub <#61 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BETU25KM2CLXIZWWTM3HB3L23XZJTAVCNFSM6AAAAABWZQIRLGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDQMZUGYYTOOJWG4> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Nicolas

[galfar]

With these parameters I get proper JPEG in TIFF (Windows 10, latest deskew) from your sample:
de-SampleJPG.zip

z:\Projects\Projects\Apps\Deskew\Bin>deskew -c j80,tjpeg -s p -o de-SampleJPG.tif  SampleJPG.tif
Deskew 1.33 (2025-04-28) x64 (DEBUG) by Marek Mauder
https://github.com/galfar/deskew
https://galfar.vevb.net/deskew

Parameters: -c j80,tjpeg -s p -o de-SampleJPG.tif SampleJPG.tif
  input file          = SampleJPG.tif
  output file         = de-SampleJPG.tif
  background color    = FF000000
  resampling filter   = linear
  max angle           = 10
  angle step          = 0,1
  thresholding method = auto otsu
  threshold level     = 128
  content rect        = 0.00,0.00,0.00,0.00 px
  content margins     = 0.00,0.00,0.00,0.00 px
  output format       = default
  skip angle          = 0,01
  dpi override        = 0
  oper flags          =
  show info           = params
  output compression  = jpeg:80 tiff:jpeg

Preparing input image (SampleJPG.tif [1156x849/R8G8B8]) ...
Calculating skew angle...
Skew angle found [deg]: 3.985
Rotating image...
Saving output (z:\Projects\Projects\Apps\Deskew\Bin\de-SampleJPG.tif [1213x928/R8G8B8]) ...
Done!

[nsjobs]

Dear, Side of Chrome complaining site is unsafe (oups), can't find the 1.33 binaries :/ Would you please point me to the right place ? Really don't know what I was doing, from cli, it is fine (even with my 1.30 ! This is fine :o) Force output is fine. Can we keep same as source compression from cli ? From the gui, the same as source does not respect it, all are LZW output... Was that my initial matter ? Any tips ? Best Le sam. 17 mai 2025 à 01:23, Marek Mauder ***@***.***> a écrit :

…

*galfar* left a comment (galfar/deskew#61) <#61 (comment)> With these parameters I get proper JPEG in TIFF (Windows 10, latest deskew) from your sample: de-SampleJPG.zip <https://github.com/user-attachments/files/20259979/de-SampleJPG.zip> z:\Projects\Projects\Apps\Deskew\Bin>deskew -c j80,tjpeg -s p -o de-SampleJPG.tif SampleJPG.tif Deskew 1.33 (2025-04-28) x64 (DEBUG) by Marek Mauderhttps://github.com/galfar/deskewhttps://galfar.vevb.net/deskew Parameters: -c j80,tjpeg -s p -o de-SampleJPG.tif SampleJPG.tif input file = SampleJPG.tif output file = de-SampleJPG.tif background color = FF000000 resampling filter = linear max angle = 10 angle step = 0,1 thresholding method = auto otsu threshold level = 128 content rect = 0.00,0.00,0.00,0.00 px content margins = 0.00,0.00,0.00,0.00 px output format = default skip angle = 0,01 dpi override = 0 oper flags = show info = params output compression = jpeg:80 tiff:jpeg Preparing input image (SampleJPG.tif [1156x849/R8G8B8]) ... Calculating skew angle... Skew angle found [deg]: 3.985 Rotating image... Saving output (z:\Projects\Projects\Apps\Deskew\Bin\de-SampleJPG.tif [1213x928/R8G8B8]) ... Done! — Reply to this email directly, view it on GitHub <#61 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BETU25OVBT35LRUG3ZHHTK326ZXN7AVCNFSM6AAAAABWZQIRLGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDQOBXHAZTINRUGY> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Nicolas

[galfar]

The latest binaries can be found here: https://github.com/galfar/deskew/actions/runs/15403700252 ("Artifacts" section down on the page).

For CLI the parameters for "TIFF compression as on input" would be for example "-c j80,tinput".

GUI however does not allow this to be set at the moment.

[nsjobs]

Many thanks Marek for the URLs... I am just a month old :/ BTW, if someone gets this thread, the down icon is visible once logged on... Le mar. 3 juin 2025 à 00:20, Marek Mauder ***@***.***> a écrit :

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*galfar* left a comment (galfar/deskew#61) <#61 (comment)> The latest binaries can be found here: https://github.com/galfar/deskew/actions/runs/15403700252 ("Artifacts" section down on the page). For CLI the parameters for "TIFF compression as on input" would be for example "-c j80,tinput". GUI however does not allow this to be set at the moment. — Reply to this email directly, view it on GitHub <#61 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BETU25KHQ32RIJRFVWXHCFD3BTEZ3AVCNFSM6AAAAABWZQIRLGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDSMZSG4YTAOBQHE> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Nicolas