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QTR-Quadtone RIP

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Message

Problem with ICCs (long).

2008-02-05 by Mike Johnston

Hi,
I think this is mostly addressed to Mr. Harrington.
I am new and was referred by Paul Roark.
http://www.paulroark.com/BW%2DInfo/

Paul used QTR to generate several .icc files.
I am having trouble reading them.

I am using Windows XP and Photoshop CS3.

I am interested in only '260-Kirkland-Glossy.icc'.
I have tried four programs to open it up on my windows XP system
* Color Darkroom
* ICC Profile Inspector
* Windows
* PhotoMe
All of them give errors trying to read this icc.

I tried unzipping it on a Linux box and there is no difference in
the two files.

I read the ICC 4.2 definition.
I stepped through a program that the ICC supports to read the ICC (iccdump).
I looked at some ICCs that work on my system.

It appears that at least the header is corrupted. Where there should be 0
bytes
there are bytes with a value of 0x20 which is a space character.
The first 4 bytes should be a binary 32 bit big endian integer. The first
two bytes
should have a value of 0, not 0x20.


00000 20 20 08 04 20 20 20 20 02 10 20 20 70 72 74 72    ..    ..  prtr
00010 47 52 41 59 4C 61 62 20 20 6B 20 08 20 1D 20 15  GRAYLab  k . . .
00020 20 16 20 29 61 63 73 70 20 20 20 20 20 20 20 20   . )acsp
00030 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
00040 20 20 20 20 20 20 F6 D6 20 01 20 20 20 20 D3 2D        .. .    .-
00050 51 54 52 20 20 20 20 20 20 20 20 20 20 20 20 20  QTR
00060 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
00070 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
00080 20 20 20 08 63 70 72 74 20 20 20 E4 20 20 20 54     .cprt   .   T
00090 64 65 73 63 20 20 01 38 20 20 20 7C 44 61 74 61  desc  .8   |Data
000A0 20 20 01 B4 20 20 02 04 77 74 70 74 20 20 03 B8    ..  ..wtpt  ..
000B0 20 20 20 14 62 6B 70 74 20 20 03 CC 20 20 20 14     .bkpt  ..   .
000C0 41 32 42 30 20 20 03 E0 20 20 01 7C 42 32 41 30  A2B0  ..  .|B2A0
000D0 20 20 05 5C 20 20 02 54 67 61 6D 74 20 20 07 B0    .\  .Tgamt  ..
000E0 20 20 20 54 74 65 78 74 20 20 20 20 43 6F 70 79     Ttext    Copy
000F0 72 69 67 68 74 20 28 63 29 20 32 30 30 36 20 2D  right (c) 2006 -
00100 20 52 6F 79 20 56 20 48 61 72 72 69 6E 67 74 6F   Roy V Harringto
00110 6E 0D 0A 0D 0A 51 54 52 2D 43 72 65 61 74 65 2D  n....QTR-Create-
00120 49 43 43 20 76 65 72 73 69 6F 6E 20 32 2E 34 2E  ICC version 2.4.
00130 30 2E 30 0D 0A 20 20 20 64 65 73 63 20 20 20 20  0.0..   desc
00140 20 20 20 22 51 54 52 5F 32 36 30 2D 4B 69 72 6B     "QTR_260-Kirk
00150 6C 61 6E 64 2D 47 6C 6F 73 73 79 20 20 20 20 20  land-Glossy
00160 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
00170 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20


Is this expected or is the .icc file being modified along the way.

Thanks
Mike Johnston

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