Ghostscript (8.53) has a little problem to rasterize the attached file (kake-INFORMEX.pdf), with tiff32nc as output driver: - At 72 dpi, there is a thin horizontal grey line just above the text "Supersep systems offer numerous benefits", which shouldn't be there (it's not visible with Acrobat 7 or any other reader I've tried) - At 100 dpi, again tiff32nc, the horizontal line disappears, but there is another one, vertical, on the left of the image. At other resolutions, you can have the line on the right or on the top of the image, or both, or all of them, it's completely random.
Created attachment 2004 [details] test file kake-INFORMEX.pdf
At 100 DPI I don't see the lines with 8.51 and 853 but do with 8.54 and head.
It appears that the following change which happend in r6180 is responsible for the spurious lines: *** ztrans.c Mon Oct 3 23:30:02 2005 --- ../../gs.6180/src/ztrans.c Tue Nov 15 05:27:17 2005 *************** *** 274,280 **** else if (code > 0) params.Background_components = code; if ((code = dict_floats_param(imemory, dop, "GrayBackground", ! 1, params.Background, NULL)) < 0 ) return code; if (dict_find_string(dop, "TransferFunction", &pparam) >0) { --- 274,280 ---- else if (code > 0) params.Background_components = code; if ((code = dict_floats_param(imemory, dop, "GrayBackground", ! 1, ¶ms.GrayBackground, NULL)) < 0 ) return code; if (dict_find_string(dop, "TransferFunction", &pparam) >0) {
Adjusting priority to reflect that this is a customer bug.
Fixed in rev. 7904 by changing the rounding method applied to the transparency group bounding box to use the same "Center-of-pixel Filling Rule" that is applied to images.
A better fix for this is being tested. In the meantime, re-open this bug.
> A better fix for this is being tested. In the meantime, re-open this bug. This was written 10 months ago and nothing followed. Reassigning to the color group. Let me know if this is an incorrect assignment.
The issue seems resolved, whether Tim's better fix was committed or not. Closing as resolved.