How does PS choose hair? Detailed explanation of PS wool picking method

When it comes to withholding, everyone should know, but what if you need to deduct your hair? I'm afraid it's not easy to do this kind of fine and sometimes messy hair. In fact, this problem is not difficult. If you don't know, please take a quick look at the tutorial of picking hairs on PS channel compiled by Bian Xiao!

PS channel hair picking tutorial

1, the best photos, of course, come from those professional photo studios, because they will shoot films with solid colors as the background. This kind of film can make it easier for software to find the edge of an object, but it is a bit tricky to dig out the perfect hair effect. In this example, we will use the traditional channel cutting method to dig out this lovely girl paper with elegant long hair and put it in a more attitude background.

2, open this photo in PS, you can see that this is not a pure white background, but the color is still very simple and simple and has a good contrast with the lovely sister paper.

3. Bring up the channel panel to view the images in the red, green and blue channels respectively. The image under each channel will show a slightly different gray tone, and find a channel with the best contrast between foreground color and background color. Drag the thumbnail of the channel to the icon of the new channel to copy it.

4. Only select this newly-built channel, and Ctrl+L(Mac user position CMD+L) calls up the tone adjustment command, so that the dark slider (left slider) moves to the right and the bright slider (right slider) moves to the left, which can significantly increase the contrast between the bright part and the dark part. But don't overdo it, or there will be some annoying noise in the picture.

5. At this time, the lovely sister paper turned into black sister paper, and a large gray area appeared in the background area. Select the dodge tool to reduce the opacity of the brush, select the highlight as the scope of action, and then apply it repeatedly in the background area until the gray part of the background is highlighted as white.

6, switch to the deepening tool, choose the shadow as the scope of action, and constantly smear the black sister paper until it can't move.

7. What if you can't draw? Directly use the black brush tool to paint the remaining areas (usually nails, whites of eyes, nose bridge and hand highlights) black. At this point, the lovely girl paper has completely turned into a shadow.

8. The shortcut key Ctrl+I (the MAC is CMD+I) will be used to reverse the obtained channel map, and check whether there are any areas missed by the brush in the previous step. If there is, it will be very obvious, and there will be black stains in the white area. Wipe them off with a white brush!

9. Hold down Ctrl(Mac is CMD) and click the thumbnail of the channel to load it into the selection, restore the visibility of the original RGB channel, return to the layer panel and copy the contents of the selection to a new layer, hide the original layer, and observe the effect of the cute girl paper cut out on a transparent background. It seems ok.

10, in this way, we cut almost perfect hair with the modified channel, but this is not enough. As for the picture of the sister paper cut out from the posture background, zoom in and observe carefully to see if there is a light translucent area on the hair edge of the sister paper, especially if the picture is pasted on a dark background, it will feel gray. It's fun to deal with this Bug We can choose to use the deepening tool, set the range to highlight, and then gently smear (reduce the opacity and concentration) the edge of the sister paper hair, and the problem of edge gray will be solved.