Adobe 65045315 Photoshop Elements Manual - Page 221

USING PHOTOSHOP ELEMENTS 10 215 Filters, effects, styles, and artwork Despeckle The Despeckle filter detects the edges in a layer (areas where significant color changes occur) and blurs all of the selection except those edges. This blurring removes noise while preserving detail. You can use this filter to remove banding or visual noise that often appears in scans of magazines or other printed materials. Dust & Scratches The Dust & Scratches filter reduces visual noise by changing dissimilar pixels. Median The Median filter reduces noise in a layer by blending the brightness of pixels within a selection. The filter searches for pixels of similar brightness, discarding pixels that differ too much from adjacent pixels, and replaces the center pixel with the median brightness value of the searched pixels. This filter is useful for eliminating or reducing the appearance of motion in an image, or undesirable patterns that may appear in a scanned image. Reduce Noise The Reduce Noise filter reduces luminous noise and color noise, such as the noise introduced by photographing with insufficient light. Select the Remove JPEG Artifacts option to remove the blocky artifacts and halos that are caused by saving an image at a low JPEG quality setting. In this photo, taken with a mobile phone, there's noise in the boy's face (left). The Reduce Noise filter smoothes away the stray pixels (right). Pixelate filters Color Halftone The Color Halftone filter simulates the result of using an enlarged halftone screen on the layer. The filter divides the image into rectangles and replaces each rectangle with a circle. The circle size is proportional to the brightness of the rectangle. Apply the Color Halftone filter 1 In the Edit workspace, select an image, layer, or area. 2 Choose Pixelate > Color Halftone from the Filter menu. 3 Enter a value for the maximum radius of a halftone dot, from 4 to 127 pixels. Last updated 1/2/2012