Ps channel matting, specifically, what is the best step of mapping?

Method 1: magnetic lasso tool When the graphics to be processed have obvious color contrast with the background, the magnetic lasso tool is very easy to use. The more obvious this contrast is, the more accurate the keying of the magnetic lasso tool is.

Method 2: The path tool is more suitable for images with complex contours and backgrounds.

Method 3: Magic eraser tool Magic eraser tool combines the characteristics of eraser and magic wand tool. When you select the magic eraser tool, click the mouse in the image, and the areas with similar colors in the image will be erased. Especially for pictures with simple background, it is a good choice to use magic eraser as the key.

Method 4: Background Eraser Tool When there is obvious color difference between the foreground of your image and the background to be erased, you can consider using the background eraser tool for keying.

Method 5: Photoshop's special key tool Extract Extract is a new function specially designed for "key" in Photoshop 5.5, which is located in the image menu. You can select the layer to be processed in the layers panel, and then click image > extract menu, and a dialog box named "extract" will pop up.

Method 6: Clever use of channels and Alpha channels to separate objects from images, which is more suitable for dealing with people's photos and the like. People generally have hair, and wands may not be competent for such fine objects as hair, so it is very unrealistic to use path tools. Using the background eraser tool will destroy the "hair quality", while the magic eraser will make people feel powerless when wiping the tiny parts between the hair.

The above is the application of Photoshop's own matting skills. In fact, there are some tools, such as Mask Pro filter and COREL KNOCKOUT, which can help us to complete the matting in different specific situations.

Method 7: Mask Pro filter keying Mask Pro filter has two important concepts: reserved color and discarded color. The reserved color is the color retained in the picture, and the discarded color indicates the color to be cropped. After determining these two colors, use magic tools to erase the discarded colors, and keying is successful.

Method 8: COREL KNOCKOUT Using the masking tool COREL KNOCKOUT, foreground objects with detailed edges (such as feathers, animal fur, shadows, hair, smoke, transparent body, etc.) can be "excavated". ) and apply it to another specific background image. Agree 18| Comment