### Applying to a media After setting up each stroke map level, the other factor affecting the image is the paper. When you select the Media level there's a file selector control for choosing a paper texture image; an uncompressed greyscale bitmap. Light areas in this image represent high areas of a bumpy texture, and dark areas represent depressions in the paper texture. The level specific controls are slightly different to the stroke map controls
Media Specific Controls
The Low Bump and High Bump controls specify the degree of paper bumps in dark and light areas of the source image. Low Bump sets the intensity of bumps where the source image is black, and High Bump sets the same for where the source image white. When the source image lies between black and white the level of the bumps is interpolated between these two levels. Using these controls you can set the same level of bumping across the image, or increase/decrease bumps in dark or light areas. Bump levels are usually set quite low. Contr Start and Contr End specify the contrast of the image. The stroke maps are applied for each active level producing grey image which is then refined to define the intensity of the strokes. Contr Start sets the % intensity of the stroke maps above which the final image is white. Contr End specifies the % intensity of the stroke maps below which the final image is black. Any intensity falling in between is interpolated between the two. Setting Contr Start and Contr End to the same value reduces the output to black or white; a slight gradient produces a smoother transition; a large difference between the two produces a much softer effect. If Contr Start is set to 100 and Contr End is set to 0, you will see the final raw stroke map image data. Setting the value of these two controls lower produces darker images, and vice versa. Increasing the bump levels results in a darker stroke map, so to maintain similar output balance, if you increase the bump levels you will need to decrease Contr Start and Contr End. ### Setting Smoothing The last control is Smoothing. The value sets the supersampling of the plugin, a way of producing smoother images. Setting it low produces grainy renderings, and higher values gives softer images. This setting works best with the square numbers 1, 4, 9 and 16. Non-square numbers can produce artefacts depending on the settings.