0.72: TIFF compression after rotation
Moderators: XnTriq, helmut, xnview, Dreamer
0.72: TIFF compression after rotation
1. Using XNViewMP 0.72 x64 (Dec 19 2014) on Windows10.
2. After 90-degree rotation, CCITT G4 compression B&W TIFF image changed to LZW compression.
3. How can I get CCITT G4 compression TIFF image after rotation ?
When I use XNView (not MP), this issue does not happen.
4. [File] > [Format settings] > [Write] > [TIFF] settings are below:
Compression for black&white picture --> CCITT G4
Compression for color picture --> LZW
All checkbox --> off
Regards,
2. After 90-degree rotation, CCITT G4 compression B&W TIFF image changed to LZW compression.
3. How can I get CCITT G4 compression TIFF image after rotation ?
When I use XNView (not MP), this issue does not happen.
4. [File] > [Format settings] > [Write] > [TIFF] settings are below:
Compression for black&white picture --> CCITT G4
Compression for color picture --> LZW
All checkbox --> off
Regards,
Re: TIFF compression after rotation
It seems that XNViewMP apply "Compression for color picture" setting to B&W image.
[File] > [Format settings] > [Write] > [TIFF] settings:
Compression for black&white picture --> CCITT G4
Compression for color picture --> LZW
--> B&W image after rotation --> LZW
Compression for black&white picture --> CCITT G4
Compression for color picture --> No Compression
--> B&W image after rotation --> No Compression
Compression for black&white picture --> CCITT G4
Compression for color picture --> Packbits
--> B&W image after rotation --> packbits
[File] > [Format settings] > [Write] > [TIFF] settings:
Compression for black&white picture --> CCITT G4
Compression for color picture --> LZW
--> B&W image after rotation --> LZW
Compression for black&white picture --> CCITT G4
Compression for color picture --> No Compression
--> B&W image after rotation --> No Compression
Compression for black&white picture --> CCITT G4
Compression for color picture --> Packbits
--> B&W image after rotation --> packbits
Re: TIFF compression after rotation
Thank you Pierre.xnview wrote:See Issue 725 for current status and details.
Re: 0.72: TIFF compression after rotation
This problem is supposed to be fixed in XnView MP 0.76 or later. Could you please try and confirm the bug fix, arxiv?
Re: 0.72: TIFF compression after rotation
I don't think it is fixed yet, I've seen apparent anomalies in file size and compression method more than once recently...helmut wrote:This problem is supposed to be fixed in XnView MP 0.76 or later. Could you please try and confirm the bug fix, arxiv?
Testing now:
1. Open the attached 1-bit file;
2. Set File > Format settings... > Write tab > TIFF :
Compression black and white -- CCITT G4 and Compression colour -- LZW
Result: file is saved with LZW compression, not CCITT G4
Setting:
Compression black and white -- CCITT G4 ; Compression colour = JPEG
Result is compression CCITT G3 !!
Something does seem mixed up! (Other colour compression options not tested.)
Re: 0.72: TIFF compression after rotation
I can confirm your observations, cday.
Reproduced.
Reproduced.
Re: 0.72: TIFF compression after rotation
O.k., thank you, I can also reproduce the problem. Issue 1149 is fixed in next version.
Pierre.
Re: 0.72: TIFF compression after rotation
This problem is supposed to be fixed in XnView MP 0.85 beta 1. Please check and confirm the bug fix here.
Pierre.
Re: 0.72: TIFF compression after rotation
Confirmed fixed in 0.85 beta 1 64bits.
Re: 0.72: TIFF compression after rotation
Thank you for checking this, cday. Before moving this to "Tested - Fixed" I'll wait for the feedback of the original poster (arxiv).cday wrote:Confirmed fixed in 0.85 beta 1 64bits.
Re: 0.72: TIFF compression after rotation
Thank, I tested 0.85b1(64bit) and found this isssue had been fixed.
Re: 0.72: TIFF compression after rotation
Good. Thank you for checking and reporting back, arxiv!arxiv wrote:Thank, I tested 0.85b1(64bit) and found this isssue had been fixed.