The Desaturate submenu contains operations that turn an image into a Grayscale representation, using different methods.
第 8.29 节 “Color to Gray”
第 8.30 节 “Desaturate”
第 8.24 节 “Mono Mixer”
第 8.32 节 “Sepia”
You can access this command from the main menu through Colors → Desaturate.
