blue edge lines showing on scans 3

[wildmouse123]

i need some help. i am scanning drawing drawn on white paper into ps. the drawings are fine, but i am getting light blue scan lines along the edges of the paper. it is time prohibitive to keep erasing these. any advice on how to avoid this? i have tried to elimiate a shadow by placing a book on the scanner. no luck. thanks in advance.

 

[jmgalvin]

Couldn't you just crop the edges?

You also might look at your scanner software to see if it has an automatic crop feature.

Using OSX 10.3.9 on a G4

 

[wildmouse123]

that works sometimes, but many times the art goes to the edges and i cant get a clean "grab". i'll look into the scanner software. any other ideas? thanks!

 

[kiddpete]

You can try increasing the contrast within Photoshop after the scan. This will make fainter lines disappear.

 

[wildmouse123]

i tried adjusting the contrast. maybe i did it wrong? it faded out my art too. i work with many layers, then flatten into one. then adjust contrast and they come back and i'm back to square one.
are there any other solutions? thanks so much.

 

[apepp]

...you may want to try using a curves adjustment layer, adjust the curve to remove the undesirable blue edges, then on the mask that is attached to the curves adjustment layer, reveal the image you want back to its original state using a combination of selections and the brush tool...

Andrew

 

[wildmouse123]

thank you, Andrew. i will try that. can you give me specific directions on this? i am working with black and white art. thanks so much.

 

[apepp]

...black and white art?

...if this has shades of pencil then scan it in greyscale, if it is merely drawn lines that are roughly solid scan it in line art mode (or greyscale too) but at a higher resolution, bearing in mind the end use and destination size...

...general rule of thumb is 300dpi at actual size (if scanning for print) in greyscale, cmyk or RGB

...for line art minimum 600dpi to 1200dpi at actual size, sometimes you get better results scanning in greyscale and then convert to bitmap in photoshop later. A later conversion can give you greater control...

Andrew

 

[apepp]

...please let me know the end purpose of the scans and also the version of photoshop you are using...

Andrew

 

[mscallisto]

I believe I had a similar problem with scanned page of handwriting from an old "yellowed and stained" receipe.
I simply wanted to remove the yellowed background and coffee cup stains, keeping the black handwriting.


SPYDERIX posted a solution that worked for me on thread229-785448

It reads in part:

Is this image just black an white? If not make it completely black and white. Adjust your levels as needs and then go in with your paintbrush and touchup any spots that are slightly grey or faded etc.

Then do the following:
Select All (Ctrl+A)
Cut (Ctrl+X)
Quickmask Mode (Q)
Paste (Ctrl+V)
Get out of Quickmask (Q)
Invert the Selection (Ctrl+Shift+I)
Choose Default Colors (D)
Edit > Fill > Foreground Color
Deselect (Ctrl+D)

The yellowing and stains were GONE, the handwriting remained.

Visit thread229-785448 for the full postings

 

[wildmouse123]

thank you for the help. the art is b&w line art...sketches and pen & ink...scanning actual size and using PSCS2...i'm not having trouble with the actual art, just those edge lines! thanks all! will definitely follow the suggestions!

 

[kiddpete]

Another possibility. Choose the selection based on color option. Then sample the blue lines. They should be selected, and you should be able to erase them.