Professional Cutouts Principle: Use a third-party professional matting plug-in to matt, and the essence of matting is based on Photoshop layer mask or Alpha channel. The following takes the "Mona Lisa" matting technology as an example to illustrate. Scope of application: AdmantEage is mainly used for matting of blue background images and green background images. Its cutout effect is unmatched by most software, and the speed is very fast, which can be completed in just a few seconds. Method flaws: Professional cutout plug-in filters must be installed.
Steps: (1) Open the material, double-click the lock sign Image Manipulation Service of the "Background" layer on the "Layer" panel, and click the "OK" button in the pop-up dialog box to convert the locked background layer into a normal layer. If you do not perform this step and open the filter directly, an error message will appear. (2) Select the menu command "Filter→Ultimatte→AdmantEage" to enter the cutout software interface. Using the tool, draw a random line in the blue or green area. (3) Click the thumbnail below the Overlay. If you find that there are still some green areas, use the tool to draw lines in the green area for many times, so that the green area is gradually reduced until it is close to the edge of the character.
(4) If you have selected an area you don't want to select, press Ctrl+Z to undo; or use the tool to draw a line to restore, the Mona Lisa software will automatically recognize and subtract the area you don't want to select. (5) The single-set OK button will return to the Photoshop interface. If you find that the part of the image area that you originally wanted to keep has also been cleared, you can press the Y key to call the history brush tool, drag the mouse, and restore the desired image area. In Photoshop matting, the above methods have their advantages, disadvantages and scope of application, not only can be used alone. Users need to set the best method according to the specific image when matting, and in complex matting, it is often necessary to combine the above methods with other tools or combinations.