$image\bookopn_shg.gif$ Improve raster images

Raster commands are used to combine layers on a page into one raster layer, or to clean up a raster image.

Normally, the new raster that results from a raster operation is placed in a new document window. To have the new raster placed in the existing window, overwriting the source image, change the overwrite raster flag by using the IN_SetOverwriteRaster( TRUE ) function. Use the IN_GetOverwriteRaster function to request the status of this flag.

Most raster operations apply only to the active raster layer.

To find out which layer is the active raster:

· Use the IN_GetActiveLayer function.

The identifiers of the active raster and the active edit layer (if any) will be returned.

To activate a different layer:

· Use the IN_SetActiveLayer( docwinID, layerID, TRUE ) function.

The specified layer is activated.

The following topics explain various raster commands.

$image\page_shg.gif$ Rasterizing layers

$image\page_shg.gif$ Despeckling an image

$image\page_shg.gif$ Deskewing an image

$image\page_shg.gif$ Resizing and cropping rasters

$image\page_shg.gif$ Changing raster characteristics

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