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介绍：

The Asiva® Grain plug-in for Adobe® Photoshop® is based on Shapiro Consulting Group, Inc.'s innovative and patented Asiva technology. The Asiva Grain plug-in allows you add grain to images on one or more color channels separately, which is useful when working with digital images that have a synthetic or "plastic" look. This gives texture and feel to an otherwise sterile image.

• Define the source colors you wish to operate on using the built in Hue, Saturation and Luminance (HSV) curves or maps. Sampling the colors in the area/s or an image you wish to affect with the built in Color Sampler Tool is a simple way of selecting these values. Adjusting and fine tuning the curves in the maps allows you to include or exclude certain H or S or V (Luminance) values affected.

• The slope of the curves will define how the filter is transitioned. A near vertical line on your Map will create sharply defined boundaries between where the filter is applied and is not, and a gently sloped curve on the Map will make the boundaries less defined or 'feathered'.

• Since there are three maps (Hue, Saturation and Luminance) to work with, you will be able to 'feather' those boundaries based on their Hue, Saturation or Luminance value differences. Asiva's curves are so precise, that tedious masking prior to application of the filters are often not necessary. The Grain filter may also be applied to your Photoshop selections.