How to use the channel in PS What is the role of the channel in ps?

PS How to use channel grading, I'll teach you!

The channel records the grayscale of a single color. For example, the relationship between black, white and gray in the red channel is recorded in the red channel. Channels are most commonly used to obtain the same color selection range, color calculation, etc.

Using the channel buckle diagram is the method of obtaining the same color, and the so-called military color is to calculate the channel. By decomposing the channel and compositing the channel, you can add richer colors to make ** have unexpected effects

First, the role of the channel:

1. Accurate selection can be established;

2. You can see the accurate image color information, which is conducive to adjusting the image color;

3. Printing and publishing are convenient for transmission and plate making;

4. You can store and load selections for later use;

5. Other software can be made.

Second, the use of channels:

1. Complex cutouts;

2. Store the color data of the image.

Channels can be deleted and created, as well as graded and other operations.

In Photoshop, the channels are not the same in different image modes. The pixel color in a channel layer is made up of the luminance values of a set of primary colors, and the channel can actually be understood as a mapping of the selection area.

Between a channel layer and an image layer, the properties of each pixel of the layer are represented by the numerical values of the three primary colors, red, green and blue, and the pixel color in the channel layer is composed of the brightness values of a set of primary colors. There is only one color in the channel with different brightness, which is a grayscale image. A channel can actually be understood as a mapping of the selection area.

PS is a professional mapping software, so PS has a lot of tools, among them, there are a variety of cutout tools, lasso tools, magic wand tools, mask tools, etc. are often used. But when it comes to portrait cutouts, simple tools can't achieve a satisfactory cutout effect, but you need to use the PS channel. Let's demonstrate the tutorial of how to use the channel and share the cutout skills.

There are professional PS software tutorials, from basic to advanced, which is very suitable for those who want to learn PS by themselves.

Tutorial on the use of the channel of PS software:

1. [Open] PS software, [Open] the original picture, first analyze the problem of the original picture and then make a cutout, and use the channel to cut out the width of the more difficult transparent wedding dress. Ctrl+J duplicates the layer, first uses the Pen Tool to cut out the opaque part, and then Ctrl+Enter converts it to a selection.

2. Add [mask] again, so that the body part can be deducted.

3. Copy the original image layer, adjust to the channel, [copy] the green channel, and then [CRL+L] adjust the level to make the background black.

4. Use the black soft-edged [Brush Tool] to paint the underneath, and then [Ctrl+Click Thumbnail] to bring up the green channel.

5. Go back to the layer panel and add [mask] to the background layer, so that the transparent wedding dress will be cut out.

6. [New] Layer 2, then go back to Layer 1, and use the white [Brush Tool] to paint the junction between the wedding dress and the bottom to make the transition natural.

7. After adding the [Curve] layer adjustment, add [Mask], and [Ctrl+Delete] fill in the background color. Then use the white Brush Tool to select the part that needs to be highlighted.

8. Copy the layer Li Wuliang in the background, and use the [Burn Tool] to paint the background part. This completes the retouching.

The above is the demonstration process of the use of PS channel orange spikes,Although PS channel cutout is very easy to use,But you should know,Not all** is suitable for using channels to cut out,Generally, you have to decide according to the color information of the three channels in the channelR、G、B。