Suppose you want to create only a cyan or magenta color separation from an image in a PDF document. PDPageMakeSeparations() will provide PostScript separations. Datalogics offers several sample programs that demonstrate working with color separations... Read More

You can draw objects from a PDF document to a window in a specific order. You could draw out of the text stream first, then a graphic, and then a vector image. For example, you might want to render the text objects in a PDF document, and leave out... Read More

Adobe Reader and Acrobat include plug-ins that both allow users to include and display 3D image graphics within PDF documents for engineering and computer-aided manufacturing processes, by converting native CAD/CAM formats into file formats that... Read More

PPI, or Pixels per Inch, measures the resolution of bitmap images. The image itself consists of a series of pixels which are “captured” at some given resolution. Technically, an image in a PDF does not have its own DPI value, though some tools,... Read More

In DLI, if you know the width and depth of the image, and its color space, you can use dlpdfimagecreatefrombmp() to insert an image in a PDF document. There is a sample of this in the DLI Sample Graphics. You may also use dlpdfimagecreatefromfile()... Read More

The easiest way to do this is at the COS level. The image XObject is a COS stream object. The Stream Dictionary holds entries that give the number of rows and the width of a row in pixels. Other entries describe the color model in use and the line... Read More

In the Library, a function called PDPrefSetAntialiasLevel is provided to set the "smooth text" and "smooth images" global flags for subsequent rendering APIs. Can set smoothing in two ways, PDFPref APIs, and with PDPageDrawContentsToMemory APIs Their... Read More

The Adobe Color Engine (ACE) and the Windows Image Color Management (ICM) are two APIs that serve similar purposes but in different environments. ACE is required to set up and modify ICC profiles in PDF documents and the APDFL environment. ICM is... Read More

The core Adobe PDF Library can be used to render a PDF page to a bitmap. The user application must then take the bitmap and add the appropriate image header (TIF, JPG, etc.) to the bitmap. If are using the Java and .NET interface, the product... Read More

Adobe PDF Library does not offer a single interface that will allow control of both Optional Content and Annotations at the same time for a PDF document. PDPageDrawContentsToMemory() allows selection of Annotation faces, but does not have control for... Read More