.TIF to .png Conversion Sometimes Mirroring Images

[Exodus]

I'm running a batch script which recursively runs through a directory tree, and upon finding .TIF files:

• Converts any .TIF files into .pngs via a couple of different commands based on the original file's size and dimensions
• Packages up all those .pngs into a .pdf and deletes them
• Zips the .pdf using 7zip

The problem is, SOMETIMES seemingly random images are mirrored horizontally.

Code: Select all

convert -quiet "%1" -rotate 90 -resize "800x" -type Palette -quality 95 -alpha off "%apath%\%~n1.png"
convert -quiet "%1" -rotate 90 "%apath%\%~n1.png"
convert -quiet "%1" -resize "800x" -type Palette -quality 95 -alpha off "%apath%\%~n1.png"
convert -quiet "%1" "%apath%\%~n1.png"

Those are the four commands I'm using, rotating where the original's dimensions indicate the file is landscape and applying less compression when the file size is under a threshold.
Does anyone have any ideas on where imagemagick is getting confused?

EDIT:
Further testing has revealed that this is something to do with the file itself - even cutting down the command to the below, some files are still being mirrored and flipped vertically!

Code: Select all

convert -quiet "%1" "%~n1.png"

EDIT 2:
Oh, "-quiet". That was silly of me, but I used it to hide a bunch of "Unknown field" warnings that didn't seem to affect anything. Looks like I should have tested this on a larger number of individual files in the first place...
Here's my test program: (the structure is just so to match the main program as closely as possible)

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@ECHO OFF

FOR %%F IN (*.TIF) DO CALL :SUBCON %%F
GOTO :EOF

:SUBCON
ECHO.
ECHO %1

CALL :NoFlipCon %1

GOTO :EOF

:NoFlipCon
ECHO Compressing to .png...
convert "%1" "%~n1.png"
GOTO :EOF

And here's the result...

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C:\Test Area\Operation Area>test.bat

00000043.TIF
Compressing to .png...
convert.exe: Depreciated and troublesome old-style JPEG compression mode, please convert to new-styl
e JPEG compression and notify vendor of writing software. `OJPEGSetupDecode' @ warning/tiff.c/TIFFWa
rnings/847.

00000044.TIF
Compressing to .png...

00000049.TIF
Compressing to .png...
convert.exe: Unknown field with tag 512 (0x200) encountered. `TIFFReadDirectory' @ warning/tiff.c/TI
FFWarnings/847.
convert.exe: Unknown field with tag 515 (0x203) encountered. `TIFFReadDirectory' @ warning/tiff.c/TI
FFWarnings/847.
convert.exe: Unknown field with tag 59932 (0xea1c) encountered. `TIFFReadDirectory' @ warning/tiff.c
/TIFFWarnings/847.
convert.exe: Unknown field with tag 59932 (0xea1c) encountered. `TIFFReadCustomDirectory' @ warning/
tiff.c/TIFFWarnings/847.
convert.exe: Unknown field with tag 512 (0x200) encountered. `TIFFReadDirectory' @ warning/tiff.c/TI
FFWarnings/847.
convert.exe: Unknown field with tag 515 (0x203) encountered. `TIFFReadDirectory' @ warning/tiff.c/TI
FFWarnings/847.
convert.exe: Unknown field with tag 59932 (0xea1c) encountered. `TIFFReadDirectory' @ warning/tiff.c
/TIFFWarnings/847.

C:\Test Area\Operation Area>

"Depreciated and troublesome old-style JPEG compression mode". I suppose that means there's no way around this? I'll look at detecting that error somehow (or detecting those files) and do something different in their case...... Bah! Bloody scanners!

Final EDIT:
So, any operation on any image that throws that error will causes it to mirror weirdly. I was hoping adding the raw .TIF to the .pdf would work, but nope. I can't think of a way around.

Okay one more EDIT:

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C:\Test Area\Operation Area>identify -verbose *43.TIF
Image: 00000043.TIF
  Format: TIFF (Tagged Image File Format)
  Mime type: image/tiff
  Class: DirectClass
  Geometry: 2340x1654+0+0
  Resolution: 200x200
  Print size: 11.7x8.27
  Units: PixelsPerInch
  Type: TrueColor
  Base type: TrueColor
  Endianess: MSB
  Colorspace: sRGB
  Depth: 8-bit
  Channel depth:
    red: 8-bit
    green: 8-bit
    blue: 8-bit
  Channel statistics:
    Red:
      min: 0 (0)
      max: 255 (1)
      mean: 246.093 (0.965072)
      standard deviation: 35.6628 (0.139854)
      kurtosis: 27.2377
      skewness: -5.23111
    Green:
      min: 0 (0)
      max: 255 (1)
      mean: 246.342 (0.966046)
      standard deviation: 35.3986 (0.138818)
      kurtosis: 27.4725
      skewness: -5.25664
    Blue:
      min: 0 (0)
      max: 255 (1)
      mean: 246.42 (0.966352)
      standard deviation: 35.0425 (0.137422)
      kurtosis: 27.8219
      skewness: -5.28923
  Image statistics:
    Overall:
      min: 0 (0)
      max: 255 (1)
      mean: 246.285 (0.965824)
      standard deviation: 35.3689 (0.138701)
      kurtosis: 27.5115
      skewness: -5.25904
  Rendering intent: Perceptual
  Gamma: 0.454545
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Background color: white
  Border color: srgb(223,223,223)
  Matte color: grey74
  Transparent color: black
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 2340x1654+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: JPEG
  Orientation: LeftBottom
  Properties:
    date:create: 2014-02-19T13:17:09+00:00
    date:modify: 2013-09-16T17:14:17+01:00
    signature: ccd33a08ed1cb9ef6bd65208e64812c4522fb466c66c7fad09ff66bd7dab7da1
    tiff:endian: lsb
    tiff:photometric: YCBCR
    tiff:rows-per-strip: 1654
    tiff:software: Xerox WorkCentre 7345
  Artifacts:
    filename: 00000043.TIF
    verbose: true
  Tainted: False
  Filesize: 321KB
  Number pixels: 3.87M
  Pixels per second: 61.43MB
  User time: 0.062u
  Elapsed time: 0:01.062
  Version: ImageMagick 6.8.8-3 Q16 x64 2014-01-19 http://www.imagemagick.org
identify.exe: Depreciated and troublesome old-style JPEG compression mode, please convert to new-sty
le JPEG compression and notify vendor of writing software. `OJPEGSetupDecode' @ warning/tiff.c/TIFFW
arnings/847.

C:\Test Area\Operation Area>

EDIT (....and he just kept talking...):
I will try upgrading to 6.8.8-7 :\
If it's fixed I'll be super happy, but I suspect it's more the dodgy compression than IM's handling...

Final final EDIT:
Didn't help. Sadness.

[Exodus]

Bump?

[dlemstra]

Can you add a link to an image we can use to reproduce the problem? And the batch file you are using?