Photoshop: Real synthesis--on the Making of displacement diagram

All along, with the replacement filter for the MM flower clothing, has become a more recognized PS industry method. The aim is to hope that the pattern pattern on the cloth is distorted and deformed with the folds. This desire is good, is a further to make a better effect of the pursuit.

But I do not know, how do you do the replacement map. If you follow the "Select All/GO/Save As replacement" method in the tutorial, I would like to say: there is a problem with that method! It can make the pattern twist, but the absolute and the fold of the light and dark relationship is not consistent!

Here is an example:

Example 1:

Original:

This is the lining:

Displacement chart by that method:

Displacement Result: The default value of the permutation ratio is 10% where there are folds, can you also identify the patterns on the clothes? The distortion is obvious!

Example 2:

Original:

This is the lining:

Displacement chart by that method:

Displacement Result: The default value of the permutation ratio is 10% in the place where there are folds, the distortion is obvious.

What's the problem? Instead of using a replacement filter, there is a problem with the displacement map and the method of processing it!

Where's the problem?

1. The substitution principle stipulates: The red channel controls the horizontal movement of the pixel; the green channel controls the vertical movement of the pixel.

2. Strictly speaking, in order to make an accurate displacement map, in the red channel of displacement map, only, and must be horizontal fold information, in the green channel, only, also must be vertical fold information.

3. While the image (light and shade) information included in the information is rich in red, green, blue three channels, are both "horizontal fold information" also has "vertical folding information." (There are other information, of course.) (and these two kinds of information are not very good separation methods)

4. You do not choose, there is no treatment, beard eyebrows cluth, directly used for replacement, can not go wrong?

Some people's point is: before there is no good way, it will be used. I beg to differ.

Do you have a better way? I said: "There!" I can only say that there is a better way than that. The industry has a good saying: "PS is dead, people are alive." ”

If you are interested, please look down!

Idea: (affirm: The following methods, can not be said to be in the production of really accurate displacement map)

1. Red, green and blue three channels have not only "horizontal fold information" but also "vertical fold information", of course, including "Other Information" (PS is indistinguishable). Moreover, the blue channel does not participate in the substitution.

2. The question now is: how can we use the useful information of this picture to change clothes?

3. Isn't there a word called photoshos-'s choice of art? Why we can not choose it! We can according to the substitution principle more reasonable, the artificial control substitution, makes it for me to use, achieves to let the pattern pattern on the cloth with folds to coincide with the distortion distortion. (For an improper example, the Air Force is in charge of the sky, the army is in charge of the ground, and now there is a war on the ground, and it happens to be in the Air Force and Army station, and it has to be formed into a hybrid unit.) Let the Air Force take part in the ground combat! The situation is a little bit like this now. )

According to the above understanding, after the experiment, confirmed that the above thinking is correct!

Here is an example:

Open artwork:

Analyzing the wrinkles on the clothes in the picture, this picture obviously has the advantage of vertical folds.

And then open the channel panel:

1. Keep the green channel. (This, in fact, also lets the "horizontal fold Information" and "other Light and shadow information" a piece of the recent) (this is a last resort, but need to artificially control it.) ）

2. Fill in the red channel with 128 gray. (The goal is to control that pixels do not move horizontally in the horizontal direction.) (or do not do so, in the replacement ratio, the horizontal ratio is set to 0.) However, I think that the habit of filling 128 ash is better. ）

3. Blue channel filled with white. (It does not participate in permutations at all.) Do not fill in, does not matter, the disorderly fill something also can. Just fill it out and have a mental comfort. ）

4. Save this artwork as a displacement diagram. This is what the displacement diagram looks like:

5. Open the cloth, the replacement of the material with the replacement ratio of the default 10% after the completion of the copy to the character picture, for cutting and processing.

6. This is the effect after processing:

Looks like the effect, much better!

Two methods of effect comparison:

Similarly, if the picture has a horizontal fold, fill the green channel with 128 gray, and the blue channel fills the white.

If both the vertical shadow, and the horizontal direction of the shadow, both are more prominent, it should be Shang to deal with, but the idea is the same.

Here's an example:

Original:

The upper part, the vertical folds are obvious, the lower part, the horizontal folds are obvious.

Make a horizontal displacement chart:

Make a vertical displacement diagram:

Horizontal Displacement results:

The pattern is in good agreement with the horizontal folds, and the vertical folds are less consistent.

Vertical Displacement Results:

The pattern is in good agreement with the vertical folds, but the horizontal folds are less consistent.

Make a picture synthesis, this is the final synthesis result:

This will take into account the characteristics of their replacement, the result has a greater improvement!

Effect comparison:

If the requirements are higher, you can follow these ideas and steps:

1. Open the character picture, select All, copy. Click Edit/Create new file to prepare the replacement map.

2. Open the character picture, using the above method to make horizontal displacement diagram, vertical displacement diagram, mixed displacement diagram (is to use the original to color, Save As) (for later use)

3. Open the cloth pictures (the size of the same as the character picture), respectively, to replace. (to be replaced directly on the cloth picture)

6. For example, complete the horizontal permutation after the full selection, replication. Paste into the character picture, load the dress selection, reverse Select, delete, multiply the bottom. (All horizontal folds are generated) (the rest is the same)

7. In this way, horizontal folds, vertical folds, mixed folds of layers are available. The back is the synthetic work. Let's not repeat it!

Interested friends, you can try.

It's a little cumbersome! To make a good effect, not a fine point, is not a good effect.

Summarize:

corresponding to the original image, if the main performance of the vertical direction of the shadow, should use the information of the green channel, the red channel fill 128 ash.

corresponding to the original image, if the main performance of the horizontal direction of the shadow, should use the red channel information, the green channel fill 128 ash.

If both the vertical shadow, and the horizontal direction of the shadow, both are more prominent, it should be Shang to deal with, but the idea is the same.

If for 45 degree folds, you can use the tutorial method to make the displacement diagram.

What needs to be explained is that this method of processing is only an approximate simulation, and the real situation can only be said to be closer. The gratifying thing is that this basically achieves a relatively consistent comparison!

If the request is not high, the pattern on the cloth is irregular, according to the method of the tutorial to do the replacement map, or can be. However, you have to understand that the twist is not consistent with the. For the requirement is higher, attaches great importance to the details, we suggest that you refer to the above method. Make better works of higher quality.