In the layer palette, in the mode Drop-down list, there are several modes for compositing. Understanding the role of these models plays an important role in the synthesis of images. The following is a detailed description:
Normal mode : This is the basic pattern of drawing and compositing , as well as the standard mode of a layer. When a tonal and selected image area is synthesized into the background, The normal pattern replaces the pixels below with the pixels added to the image, which is a direct substitution of the back scene element. When working in Normal mode, you can change the opacity of the drawing and selection by clicking and dragging the Opacity slider before finalizing an edit, where the Opacity slider appears on the Layers palette when the layer is synthesized and merged , and appears on the Brushes palette when drawing .
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Dissolve mode : This mode assigns foreground tones to the selection area thus destroying a choice or stroke mode is useful when drawing you can create a wide range of stripes attaches a peculiar effect and creates a complex design pattern can also incorporate an option into a background image and blending layers the effect is different from photos Font face= "Creative arts Jane Bold".
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B ehind and clear mode These modes can only be used on layers background images cannot be drawn in this pattern pattern treats opaque pixels as a masked pixel a layer on which only opaque pixels can accept tones This is equivalent to a sheet of opaque paper on the back of the drawing and the paper below there is already a design Clear mode converts opaque pixels into transparent and can only be used for dashes and bucket tools
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Multiply and screen mode : These patterns may be the most useful pattern a designer can ask for in drawing and compositing Among them multiply the function of the and screen mode function just opposite In the multiply the mode of drawing foreground tones and a pair of image tones combined reduce the brightness of the drawing area A darker hue is usually the result of drawing in the multiply mode and the effect looks like a deep picture of a piece of paper with a soft charcoal when used as a model for composite floating selection ,multiply mode highlights its darker tonal values when selecting a fusion background image The lighter tones in the selection will disappear
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Overlay mode : This mode strengthens the brightness and shaded areas of the drawing area Using this pattern in a floating selection creates a strong brightness and shadow area on the background image The middle tonal area of a pair of images - neither brightness nor shadow - overlay Pattern drawing with current foreground hue and in overlay the floating selection in the mode will merge most of the tonal values into the background image This mode is particularly useful when creating a phantom object and a super bright caption in a pair of images
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Soft Light and Hard Light mode : This is the combination effect mode Both of these modes affect the underlying hue the so-called underlying hue is the color of a selected background image synthesized on the above If a background area is brighter than the 50%, then soft Light mode to increase the brightness of the drawing and synthesis selection and hard Light mode is masking its brightness . If the following background area pixel brightness value is lower than 50%,soft Light mode to deepen the region and hard Light then increase its tonal value
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Darken and lighten mode : The darken mode affects only pixels in the image that are lighter than the foreground hue , and pixels with the same or deeper values are unaffected . Instead , the lighten mode only affects pixels in the image that are deeper than the selected foreground color . the effects of darken and lighten patterns on drawing and compositing are more intense than those produced by screen and Multiply patterns, and they need to be darken. Lighten mode .
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Difference mode : This mode estimates both the image area of the drawing and the current foreground color , and if the foreground hue is higher , the background tones change the opposing tones of their original values . In this mode, painting with white on a single image produces the most significant effect , because no background image contains tonal values that are brighter than absolute white .
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Hue mode : The Hue mode only changes the shade of the Hue , and the brightness and saturation of the drawing area are unaffected . This pattern is useful when staining a region .
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saturation mode : If the foreground hue is black , This mode converts the tonal region to grayscale . If the foreground hue is a tonal value , then this pattern increases the base hue of the underlying pixel under each stroke , reducing the gray component . Foreground tones that are not black do not work in this mode .
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Color Mode : This mode simultaneously changes the hue and saturation of a selected image , but does not change the tonal composition of the background image - the characteristic of composing visual information in most photographic images . this mode is useful.
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luminosity mode : This mode increases the brightness characteristics of the image , but does not change the tonal value . Be careful when you highlight a tonal region that is saturated in an image , and use this mode with strokes to drop the Opacity on the brushes palette to approximately 30%.
