To the users of Photoshop software to detailed analysis to share the principle and advantages of high frequency grinding.
High-Low frequency principle:
Photoshop high-low frequency grinding principle is to divide the image information into two parts, the color and light recorded in the low-frequency, the arts and sciences to save the details to high-frequency; If we separate the two frequencies into two layers, we can adjust them individually without disturbing each other. The low-frequency layer is used to control the color and light of the image, and the adjustment does not affect the picture details. We use the high frequency layer to control the details without changing the color.
Short time, mastering the high frequency grinding method, in the preservation of skin texture in the case of rapid image grinding, but also can be used in neutral gray commercial grinding later, the effect is very obvious.
Pure use of high-frequency than neutral gray grinding skin so delicate, if you want to achieve the desired effect must also master neutral Gray to the low-frequency light and light processing.
(Note: Absolutely no shortcuts can make an image of the moment tall, even if you want to opportunistic, it also requires a certain skill.) )
Need to understand the knowledge points: High contrast retention, Gaussian blur, applied image.
Main method: High and low frequency grinding skin
Time consuming: 20 minutes
Color palette: Curves, optional colors, color balance.
1, in the PS inside open the original image.
2, continuously press two times ctrl+j copy image, get layer 1 and Layer 1 copy. Rename Layer 1 To: low-frequency layer, Layer 1 copy renamed to: High-frequency layer.
3, select low frequency layer, execute: Filter-blur-Gaussian blur, fuzzy radius value is set to 6 pixels here. Select High-frequency layer, execute: image-Apply image, open the Application Image dialog box, set as follows:
(The use of Mixed mode selection of the image minus the reason is to subtract low-frequency layer information, the replenishment value of 128 is to fill out the details of the layer of information outside the texture of a 128 of the gray layer, so that we can use linear light layer blending mode to filter out the gray information.) )
Get high frequency separately?? Low frequency layer.
4, the high-frequency layer of the mixed mode set to: Linear light, the main purpose of the operation is to shield the gray.
5, select High-frequency layer, the use of repair brush tool to remove the face obvious pimple, acne. Try not to use the stamp tool to avoid loss of skin detail textures when cleaning up the flaws.
6, off high-frequency layer, select the low-frequency layer with a patch tool to choose the face obvious color block (hold shift+t key plus selection), and then press the SHIFT+F6 key feather 20 pixels, and then a Gaussian blur, the value of 20. Use the Healing Brush tool to further remove some patches (operating on low-frequency layers without affecting the detail texture of the skin and then lighting the high-frequency layer).
After 5, 62 steps of operation, the skin should have been basically modified well. Our low frequency layer blur, is to allow some obvious color block evenly dispersed, with high-frequency layer to adjust the details, you can use the stamp and repair tools, because there is no color effect, the operation here only change the details, do not change the color, very convenient.
For the low frequency layer palette, the method and adjustment parameters are shown below:
(The color palette for low-frequency layers does not affect the texture of the skin, because the detail texture of the skin is stored on the high frequency layer-the top layer.) )
The values for each adjustment layer are as follows:
(If you are unfamiliar with the color palette, it is recommended to spend some time to study, color matching is really important, this parameter may only apply to this security, another image can not be used, so we do not remember the parameters, but the method)
If you feel that the neck and the clavicle part of the light and shadow can be a bit of a double curve or neutral ash simple over it can be, here is not introduced.
Do here if you think it is not enough, you can use portraiture a little over, the number should not be too large, and finally use high contrast to keep doing a bit of sharpening on it.
Let's build a Black-and-white observation group, and it's nice to see the relationship between light and shade and the texture of the skin.
Well, the above information is small to give you photoshop this software users of the detailed high and low frequency grinding skin principle and advantages of in-depth analysis of the full content of sharing, you see the users here are very clear now, I hope that the content of the small part of the above can bring useful help to everyone.
