10 votes

Best way to flatten a curled photographed book photograph?

Here are the manual steps to achieve that in Photoshop (based in CS6 on OS X): Open the image (Ctrl-O). Increase contract by selecting in menu Image -> Auto Tone (Shift-CMD-L). Optional: Choose ...
  • 735
10 votes
Accepted

Smoothing edges from jagged to a beautiful curve

No silver bullet available. No software really knows the original, only guess. But you can help at the difficult places. At first make a work copy of your original as separate layer, by Magic Wand ...
  • 52.5k
9 votes

How to convert old scanned documents into black and white

With GIMP: Open a file. Convert your document to grayscale: Image → Mode → Grayscale. Select the background color: Select → By Color, click with mouse pointer on the color of the background. Invert ...
  • 91
7 votes
Accepted

How to determine a matching color code from a physical sample?

Get your (or borrow a) Pantone swatch book and hold it up next to the wallpaper until you find a close match.
  • 49.9k
6 votes

Scan of paper: keep grain pattern, remove gradient

This is a perfect situation for the smart-blur tool since the text information is high-contrast with respect to the background. I have a sample below where I applied a mild smart blur just enough to ...
  • 4,375
6 votes

How can I remove the unwanted background from a scanned handwritten signature?

This is very easy in Gimp. Just use the bucket tool to fill the background white, and export. Or if you want to go one stage further, then after that, use the select with the same colour tool, press ...
5 votes

Smoothing edges from jagged to a beautiful curve

If you are only using Photoshop, These are the steps I took.. First I Changed the image resolution to 300 dpi Then I went to Menu item Image/Adjust/Invert Then using my magic wand I selected all of ...
  • 944
4 votes

How can I remove the unwanted background from a scanned handwritten signature?

Using Photoshop, this is the best way I know to get rid of a background while preserving the integrity of something that has been sketched or drawn and you will get much, much better results than ...
  • 8,436
4 votes

Smoothing edges from jagged to a beautiful curve

Can you redo the logo using the original font, which is called Blowbrush? https://www.dafont.com/blowbrush.font
4 votes
Accepted

App to take picture of sketch and convert to drawing

If you have an Adobe CC account, you can use the Adobe Capture CC app to take a photo and vectorize it. The app is available for iOS and Android devices. With the app, you can take a photo of a hand ...
4 votes

How to remove paper pattern from high-res watercolor scans (batch)

Since you already have G'MIC - might be an idea to look at the smoothing filters listed under the Repair section in the Plugin. This one is the Smooth (Bilateral) filter. Looks quite promising. ...
3 votes

Adjustment layers do not apply after merging layers. Why?

It's most likely because the adjustment layers are accounting for "white" background layer in their calculations. If you want to make sure "what you see is what you get" be sure to clip those ...
  • 997
3 votes

Scan of paper: keep grain pattern, remove gradient

This is just how I would do this, maybe it's not an option for you. This is a technique that goes very quick and will not affect the quality of your black text at all. I'd isolate the black text ...
  • 13.6k
3 votes
Accepted

How to convert a picture into black lines and a transparent background?

For your image I would use Channels. Go into your channels and notice the red one has the best contrast. Duplicate that channel and then use the Curves to adjust it. At the bottom of the Curves panel ...
  • 23k
3 votes

Scanning black & white line drawings

It would work, but you would have to take the thickness of the strokes into account. You would have to use a pen to draw the body that is 1/3 times the thickness of the pen that you would use to draw ...
  • 8,118
3 votes

How to remove the textured background from a handwritten text document?

All you need to do is choose Image > Adjustments > Levels and alter the levels within the image. Simply drag the left triangle (black) to the right to darken the dark areas and then drag the ...
  • 200k
3 votes
Accepted

Fixed line thickness for scanned, traced drawings in Illustrator

Using the pen tool with a stroke is the correct solution. You don't need to draw anything with your mouse. Just place anchor points and adjust the curves as needed. With some practice, it doesn't ...
3 votes

Additional layers in "scanned" PDF

When I open the PDF in Illustrator, I receive an error that says: An unknown imaging construct was encountered This suggests either some kind of file corruption, or perhaps there is some ...
3 votes
Accepted

Does a scan need descreening if meant to be printed at the same size?

Yes, it's important to descreen a scanned halftone image even though it's going to printed at the same size as the original. In this answer I will assume that you are printing with offset or a digital ...
  • 19.6k
3 votes
Accepted

How to use PhotoShop to enhance these images to make them more readable?

Something for the dark top areas of your pages: Start by applying filter smart blur. It doesn't actually make your text more clear, but reduces the graininess of the unwanted noise by combining the ...
  • 52.5k
2 votes

How to convert old scanned documents into black and white

There was a plugin in the GIMP plugin registry that did this. It's archived here now. Some time ago I translated this to Python and it ran a lot faster. Here's the result of its application to the ...
2 votes
Accepted

Maintaining correct line thickness and small dots seem mutually exclusive in Illustrator's Image Trace

It may be beneficial to scan the drawing at very large dimensions, such as a 600% enlargement. Then trace the enlarged version. This will allow you to trace with more accuracy. There is a limit to ...
  • 200k
2 votes
Accepted

Filling areas in scanned maps (not by colors but by pattern)

One thing you could try is using the Select-by-Colour tool in Hue select-by mode (rather than the usual Composite select). [See the Tool Options, "Select by:" parameter.] To eliminate holes, grow the ...
2 votes

Scanning colored pencil illustrations and prepare them for printing?

To get rid of black noise, best is to look, where it comes from. I found that in yellow areas most of black noise is in green channel. Select area in image, select green channel and adjust curves so ...
  • 804
2 votes
Accepted

Adjust levels in a set of scanned images in GIMP

Definetelly your scanner software is trying to run some "auto" thing by itself. You should really try to turn that off. There is no easy way to make then consistent again but for trial and error. ...
  • 4,979
2 votes

Remove blue lines in Photoshop

Another solution: Image > Adjustments > Black & White. Make colors blue and cyan as clear as you want until the blue lines disappear. And that´s it. (This solution works only on RGB mode.)
2 votes

Smoothing edges from jagged to a beautiful curve

I'd use Illustrator, not Photoshop, and I'd use a Wacom tablet and pencil tool. If you don't have that, just bring the B&W image in to Illustrator and create a live trace from it. Play with the ...
2 votes
Accepted

Made transparent background for a signature: tools gratis on line without sign in/registration

Use GIMP. Open your file. If it's not RGB, change the mode to RGB (=Image > Mode > RGB). Insert alpha channel, if it does not already exist. Goto Layer > Transparency. Option "Add alpha channel" is ...
  • 52.5k
2 votes
Accepted

3DSMAX: Cleaning up a photogrammetry model

Photogrammetry is statistical estimation which tries to find the most probable reason for the given set of photos. That includes reasoning what's the object, where the camera has been and what error ...
  • 52.5k

Only top scored, non community-wiki answers of a minimum length are eligible