Photoshop to pick a stamp pattern from a scanned image

Recently, the unit implementation of online Office, the need to send the official seal scan online. But some official seal manuscript quality is not very good, after scanning has the date, the inscription and so on the text to cover in the seal above. Helpless under had to use Photoshop to pull out the seal pattern. This example is used by an ancient seal (Fig. 1).

Processing complete

Look, in the red channel you can see the seal and the text black and white difference is the largest, so we use it, copy red channel (Figure 2).

Go to red Copy channel, ctrl+m up the curve, with black and white straws Click on the words and seals, in the red Copy Channel to make the text become completely black, once no, just a few more times, until the seal disappears (Figure 3).

Description: If you extract the official seal, in the red channel, may only see the date, signed, the curve can be more convenient.

2, back to the level of the board, copy the background layer, named to go Word. Next, go to the channel panel, hold down CTRL, click the red Copy channel, pull up the selection, press Ctrl+alt+i to invert the selection, press Ctrl+alt+d to feather the selection 1 to 2 pixels, go back to the Layers panel, select the Word layer, press Del to remove the selection, and Ctrl+d remove the selection.

For ease of observation, we create a new layer under the go-word layer named white background, filled with white. As you can see, the original part of the black word has been removed and turned white (Figure 4). Why do you want to delete the black Word section? I'll explain it below.

3, copy to the word layer, the copy of the layer named to the back, this step is to remove the yellow background of the seal, if you extract the official seal on the white Paper, but also to remove the white background, because the white degree of papers, may be in the future where you need to apply color differences. This step is not to be saved. Watch the channel panel, choose the seal and the most background difference channel, here we choose the green channel, to the back and the same principle, the specific approach to step 1 and step 2, the effect is as shown in Figure 5 (Figure 6).

4, copy to the back layer, the duplicate of the layer named repair, as the name suggests, this step is to repair the original text blocked seal part. Then we will use the seal tool, the seal tool to repair the seal is a bit of a fatalistic taste ah.

Use the ALT key to define the position of the Seal tool template, carefully coated, attention and stroke direction. At this time all see your patience and careful.

Because the Chinese seal exquisite residual white, in the press, when the force uneven, will cause a place did not be able to color, on the paper left white part. Because the front has been removed from the black word, in the repair of some places did not take care of, a little bit of it does not matter, when it is the seal is residual white, it is a way to be lazy. Otherwise directly with the Seal tool repair, leaving a little black mark, red in a little black will be very conspicuous.

In addition, repair you can create a new image, according to the seal of the font input the same text, observe the direction of the text and characteristics, and then repair will be convenient, not too distorted. Because most of the official seal is a standard font, so the repair of the official seal is particularly used (Figure 7).

5, finally adjust the color and direction of the seal, with a curved tool, simply adjust the curvature of a curve, set to the color you need. Using the Ruler tool (I) and the menu/image/roate canvas/arbitrary, you can adjust the angle of the seal.

At this point, the seal is out and look at the final effect (Fig. 8).

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