PS channel cutout tutorial

Original picture

final renderings
1. Start photoshop, import the picture you want to process, click the "pen" tool, set the properties, and then outline the main body of the person in the picture. Be careful not to get the broken hair caught in it, as it will be specially processed later.
Tip: When using the "pen" tool to draw the picture, move it slightly inward so that there will be no edges in the final product.

2. Open the "Path" panel, and you will find that there is an additional "Working Path" in the Path panel. Click the "Load Path as Selection" button to convert the closed path into a selection.

3. Select the Layers panel, click the "Background" layer, right-click, and click the "Copy Layer" command to create a new "Background Copy". Select "Background Copy" and click the "Add Layer Mask" button.

Tip: The layer mask has the advantage of being easy to change without destroying the original layer.

4. Select the channel panel, drag the "green" channel to the "New" button under the channel panel, and make a copy.

5. Click "Green Copy" and press the shortcut key Ctrl+L to adjust the color levels. Pull the black slider on the left to the right and the white slider on the right to the left. This will reduce the midtone part and increase the value. Shadows and highlights separate the hair from the background.

6. Press the shortcut key Ctrl+I to invert the "Green Copy" channel, click the "Brush" tool, attribute settings, use a black brush to blacken the hair except for the hair (that is, the areas that do not need to be selected), and then use a white brush to Apply white where needed in the hair.
7. Click the "Load Channel as Selection" button on the "Channel" panel to get the "green copy" selection.

8. Return to the "Layer" panel, double-click the "Background Layer" to change it to a normal "Layer 0"

9. Click the "Add Layer Mask" button to add a layer mask to "Layer 0". This beautiful girl is separated from this picture.

Change the background image to any one and the effect will be as follows: