If checked (the default), when a selection is present the mask will be applied only within the selected pixels. Subtract - Subtract the intensity of the mask pixel from the target pixel. Minimum - Use the minimum of intensity of either the mask pixel or the target pixel. Maximum - Use the maximum of intensity of either the mask pixel or the target pixel.
Invert - If the intensity of a mask pixel is greater than 128, invert the value of the target pixel.
#Pure white pixel check how to
Specifies how to use the mask within the target image:Īdd - Add the intensity values of the mask pixels to the target. All grayscale images available will be listed together with their sizes. The selection, a channel, or invisible pixels. Since masks are often used as a means of saving selections or other patterns from existing images Manifold provides an Edit - Save Mask/Channel command that makes it easy to create a mask using an existing image. We can create masks using any method used to create or edit grayscale images. What makes a grayscale image a "mask" is simply how we use it. There is nothing special about grayscale images used as masks. To alter the values in the R, G, B or Alpha channels of the target image using the values in the mask.Ī mask can be any grayscale image. To make a selection in the shape shown by the mask. Masks are grayscale images that are used to control other images.
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