User Guide

Modifying Images
Raster Design provides several tools for modifying images.
■ Cleanup. Correct scanning errors or minor imperfections in bitonal images. You can
deskew, despeckle, touchup, adjust the bias, invert, or mirror an image.
■ Image Processing. Adjust the appearance of an image. For example, you can use the
convolve filter to reduce harshness or noise in an image.
■ Raster Entity Manipulation (REM). Edit raster entities in bitonal, color, and grayscale
images. For example, you can adjust the radius of a raster circle, remove dimension lines
on a mechanical drawing, or use REM to copy electrical symbols from one image to another.
■ Mask. Clip images inside the mask boundary and hide or unload images outside the mask
boundary. A mask does not permanently alter an image.
■ Crop. Delete data outside a selected area. The image frame size is adjusted automatically.
A crop permanently alters an image.
■ Remove. Rub raster data within an image or across multiple images. The only images
affected are those within, or partly within, the selected entity or area.
■ Merge. Merge images, merge vectors into raster data, and select raster pen widths.
■ Properties. Adjust the attributes of an image such as position or transparency color.
Selecting an Image
This topic explains how to select an image if you have more than one in a
drawing.
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