Adobe 13101332 User Guide - Page 328

Adobe Photoshop Help Using Help | Contents | Index Applying Filters for Special Effects Back 328 Gaussian Blur Quickly blurs a selection by an adjustable amount. Gaussian refers to the bell-shaped curve that is generated when Adobe Photo-shop applies a weighted average to the pixels. The Gaussian Blur filter adds low-frequency detail and can produce a hazy effect. Motion Blur (Photoshop) Blurs in a particular direction (from -360º to +360º) and at a specific intensity (from 1 to 999).The filter's effect is analogous to taking a picture of a moving object with a fixed exposure time. Radial Blur Simulates the blur of a zooming or rotating camera to produce a soft blur. Choose Spin, to blur along concentric circular lines, and then specify a degree of rotation; or Zoom, to blur along radial lines, as if zooming in or out of the image, and specify an amount from 1 to 100. Blur quality ranges from Draft for the fastest but grainy results; or Good and Best for smoother results, which are indistinguishable except on a large selection. Specify the origin of the blur by dragging the pattern in the Blur Center box. Smart Blur Precisely blurs an image.You can specify a radius, to determine how far the filter searches for dissimilar pixels to blur; a threshold, to determine how different the pixels' values should be before they are eliminated; and a blur quality. You also can set a mode for the entire selection (Normal), or for the edges of color transitions (Edge Only and Overlay). Where significant contrast occurs, Edge Only applies black-and-white edges, and Overlay Edge applies white. Brush Stroke filters Like the Artistic filters, the Brush Stroke filters give a painterly or fine-arts look using different brush and ink stroke effects. Some of the filters add grain, paint, noise, edge detail, or texture to an image for a pointillist effect. Accented Edges Accentuates the edges of an image. When the edge brightness control is set to a high value, the accents resemble white chalk; when set to a low value, the accents resemble black ink. Angled Strokes Repaints an image using diagonal strokes.The lighter areas of the image are painted in strokes going in one direction, while the darker areas are painted in strokes going the opposite direction. Crosshatch Preserves the details and features of the original image while adding texture and roughening the edges of the colored areas in the image with simulated pencil hatching. The Strength option controls the number of hatching passes, from 1 to 3. Dark Strokes Paints dark areas of an image closer to black with short, tight strokes, and paints lighter areas of the image with long, white strokes. Ink Outlines Redraws an image with fine narrow lines over the original details, in pen-and-ink style. Spatter Replicates the effect of a spatter airbrush. Increasing the options simplifies the overall effect. Sprayed Strokes Repaints an image, using its dominant colors with angled, sprayed strokes of color. Sumi-e Paints an image in Japanese style, as if with a wet brush full of black ink on rice paper. The effect is soft blurry edges with rich blacks. Using Help | Contents | Index Back 328