Auto Crop - how does it work?
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- XnThusiast
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Auto Crop - how does it work?
I have two questions, maybe regarding the same thing.
a) Auto-Crop:
I don't understand how it works. What is "Tolerance", what is "Background color"???
b) Croping of white space:
I will get a lot of TIF files (black / white; 400 DPI, CCITT G4 or LZW), made by CAD programs. The "papersize" will be very large (i.e. 80 x 350 cm), but the "inked area" (the real printed area) will be much smaller (A4 - A1). The rest of the picture will be an emtpy area (white space). How can I crop (trim) the TIF to the "inked area + x mm white space"? With auto-crop?
Best regards
Peter
a) Auto-Crop:
I don't understand how it works. What is "Tolerance", what is "Background color"???
b) Croping of white space:
I will get a lot of TIF files (black / white; 400 DPI, CCITT G4 or LZW), made by CAD programs. The "papersize" will be very large (i.e. 80 x 350 cm), but the "inked area" (the real printed area) will be much smaller (A4 - A1). The rest of the picture will be an emtpy area (white space). How can I crop (trim) the TIF to the "inked area + x mm white space"? With auto-crop?
Best regards
Peter
XnView 2.51.0 German, XnConvert 1.95, Win 10
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Thanks, now I could make a testfile.
Question:
I took a tiff, B/W, 400 dpi, CCITT G4, 89 x 350cm, 129 kB, and cropped it (background black).
The result is a tiff, B/W, 400 dpi, CCITT G4, 89 x 235cm (correct cropping) , but 444 kB.
Why?
Suggestion:
The cropping uses exactly the last pixel. It would be nice to add a "space-tolerance" (positive or negative value; absolute in pixel or cm or relative in %) that is added to the "last pixel". With "positive space" I can add a small white paperspace around the tiff, with "negative space I can crop i.e. a frame, draawn around the picture (I use plans which have a drawn border-line around the plan.)
Best regards
Peter
Question:
I took a tiff, B/W, 400 dpi, CCITT G4, 89 x 350cm, 129 kB, and cropped it (background black).
The result is a tiff, B/W, 400 dpi, CCITT G4, 89 x 235cm (correct cropping) , but 444 kB.
Why?
Suggestion:
The cropping uses exactly the last pixel. It would be nice to add a "space-tolerance" (positive or negative value; absolute in pixel or cm or relative in %) that is added to the "last pixel". With "positive space" I can add a small white paperspace around the tiff, with "negative space I can crop i.e. a frame, draawn around the picture (I use plans which have a drawn border-line around the plan.)
Best regards
Peter
XnView 2.51.0 German, XnConvert 1.95, Win 10
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Plase check the compression in option/WritePeter2 wrote:Thanks, now I could make a testfile.
Question:
I took a tiff, B/W, 400 dpi, CCITT G4, 89 x 350cm, 129 kB, and cropped it (background black).
The result is a tiff, B/W, 400 dpi, CCITT G4, 89 x 235cm (correct cropping) , but 444 kB.
Why?
OkSuggestion:
The cropping uses exactly the last pixel. It would be nice to add a "space-tolerance" (positive or negative value; absolute in pixel or cm or relative in %) that is added to the "last pixel". With "positive space" I can add a small white paperspace around the tiff, with "negative space I can crop i.e. a frame, draawn around the picture (I use plans which have a drawn border-line around the plan.)
Pierre.
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- XnThusiast
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- XnThusiast
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- XnThusiast
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