CSC/FAR 020, Computer Graphics, October 15, 2014 Dr. Dale E. Parson http://faculty.kutztown.edu/parson Week 7 More filters, compositional effects

Focus, Blur, Filter Gallery Retrieve virtualmedia.zip from Parsons/Outbox. Open ParsonFocus.psd. It is possible to stack Smart Filters. But they share a common Layer mask. This image required copying figures to be sharpened to another layer so that Smart Sharpening could apply with one mask, Gaussian Blur of background with another. Note Filter Gallery layer.

Creating a Brush tip Open cornfieldtree.JPG. Zoom in to tree and use Polygonal lasso Tool, Select -> Color Select and other tools to select reddish tree. Edit -> define Brush Preset to make it a brush. Create a new normal layer. Select Brush, Air Brush, paint with this brush.

Highlighting Aspects of a Photo Lines versus Color Open PrayingMantis.psd. Enable filter layers one at a time. Gaussian Blur with 50% opacity softens focus. Glowing Edges blended as Overlay with reduced opacity contrasts texture from the layer-masked mantis. Walk through other layers on this image.

Line Drawings Open cschallway.psd. Enable Glowing Edges Filter – Edges get the highlights. Invert to get dark lines and light areas. Black & White with reduced opacity diminishes color without removing it. Brightness / Contrast Adjustment Layer brings texture back to over-brightened areas.

Water Color Open purpleflowers. The Smart Filter Layer has the following components. Filter -> Noise Median obscures details. Poster Edges highlights boundaries, creates color contours via posterization. Unsharp mask makes boundaries more discrete.

Painting with a Pattern Stamp Copy and Edit -> Define Pattern out of the entire image background. Paint on an all-white layer or all-black layer using Pattern Stamp. Set brush size and pattern, hardness, opacity and flow to get desired effect. Adjust and re-paint in stages. Add adjustment layers as needed.