AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2011.04.12 02:06 "[Tiff] Libtiff v4.0.0beta7 released", by Bob Friesenhahn
2011.04.12 13:14 "Re: [Tiff] Libtiff v4.0.0beta7 released", by Edward Lam
2011.04.12 13:30 "Re: [Tiff] Libtiff v4.0.0beta7 released", by Bob Friesenhahn
2011.04.12 15:55 "Re: [Tiff] Libtiff v4.0.0beta7 released", by Edward Lam
2011.04.12 17:05 "Re: [Tiff] Bug 1941, Was: Libtiff v4.0.0beta7 released", by Lee Howard
2011.04.12 18:01 "Re: [Tiff] Bug 1941, Was: Libtiff v4.0.0beta7 released", by Edward Lam
2011.04.13 02:30 "Re: [Tiff] Bug 1941, Was: Libtiff v4.0.0beta7 released", by Graeme Gill
2011.04.13 13:08 "Re: [Tiff] Bug 1941, Was: Libtiff v4.0.0beta7 released", by Edward Lam
2011.04.15 02:36 "Re: [Tiff] Bug 1941, Was: Libtiff v4.0.0beta7 released", by Graeme Gill
2011.04.15 08:41 "Re: [Tiff] Bug 1941, Was: Libtiff v4.0.0beta7 released", by Igor Skochinsky
2011.04.15 13:05 "Re: [Tiff] SxS Hell, Was: Bug 1941, Was: Libtiff v4.0.0beta7 released", by Edward Lam
2011.04.16 14:48 "Re: [Tiff] Bug 1941, Was: Libtiff v4.0.0beta7 released", by Bob Friesenhahn
2011.04.18 03:47 "Re: [Tiff] Bug 1941, Was: Libtiff v4.0.0beta7 released", by Graeme Gill
2011.04.12 15:19 "Re: [Tiff] Libtiff v4.0.0beta7 released", by Edward Lam
2011.04.13 02:30 "Re: [Tiff] Libtiff v4.0.0beta7 released", by Bob Friesenhahn
2011.04.13 13:09 "Re: [Tiff] Libtiff v4.0.0beta7 released", by Edward Lam
2011.04.13 13:44 "Re: [Tiff] Libtiff v4.0.0beta7 released", by Bob Friesenhahn
2011.04.13 14:32 "Re: [Tiff] Libtiff v4.0.0beta7 released", by Edward Lam
2011.04.19 16:03 "Re: [Tiff] Libtiff v4.0.0beta7 released", by Edward Lam
2011.06.01 10:43 "Re: [Tiff] Write Tile", by Jorge Martin
2011.05.31 10:54 "[Tiff] Write Tile", by Jorge Martin
2011.05.31 12:52 "Re: [Tiff] Write Tile", by Olivier Paquet
2011.05.31 13:02 "Re: [Tiff] Write Tile", by Jorge Martin
2011.05.31 13:02 "Re: [Tiff] Write Tile", by Edward Lam
2011.06.01 13:21 "Re: [Tiff] Write Tile", by Olivier Paquet
2011.04.13 15:40 "Re: [Tiff] Libtiff v4.0.0beta7 released - libtiff.def changes required", by Edward Lam
2011.04.19 19:04 "Re: [Tiff] Libtiff v4.0.0beta7 released - libtiff.def changes required", by Edward Lam
2011.04.23 09:41 "Re: [Tiff] [GM-help] PDF version", by Hunter1972

2011.04.23 09:41 "Re: [Tiff] [GM-help] PDF version", by Hunter1972

> You can adjust the GraphicsMagick output by adding a gamma adjustment > step. Compare the dramatic difference between these two commands:

>    gm convert src.jpg -gamma 0.45 -monochrome -colors 2 gamma-0.45.tiff
>    gm convert src.jpg -gamma 2.6 -monochrome -colors 2 gamma-2.6.tiff

> Bob

Yes, Bob, I checked it, the difference is seen by naked eye, thank you!

Then I decided to create a colored TIFF file with JPEG compression. Gm utility ("convert -compress jpeg c:\3.jpg c:\45.tif") is finished with 1 not creating the file.

My own utility raises an exception with the message: "ImageLibExe: JPEG compression support is not configured. (c:\59.tif) reported by ..\..\coders\tiff.c:621 (TIFFErrors)"

Under debugger I found that the error is caused in tiff.c (line 4644, TIFFWriteScanline).

I had the similar problem with bmp2tif.c module from libtiff and there it was resolved by setting TIFFTAG_ROWSPERSTRIP to 8 or 16 (in command line "-r 8") Here as I see TIFFTAG_ROWSPERSTRIP is set to 16 so the problem not in it. What to do?

Ravil