ImageGear Imaging Formats Reference

This chapter provides information about the image formats that ImageGear supports. Before you begin, please refer to the Encoding vs. Compressing section below to familiarize yourself with the terms used in this Chapter.

The Format Suitability at a Glance section briefly delineated which formats best support various types of images. This section provides you with a starting point for deciding which file formats to use in your application.

The section ImageGear Support for Graphics File Formats describes the types of imaging file formats supported by ImageGear and provides useful information about support for some specific formats:

Support for Adobe PDF/PS Formats
Support for DICOM File Format
Support for JPEG2000 File Formats
Support for Metafile Formats
Support for Multi-Page File Formats

ImageGear Supported Bit Depths section describes the bit depths, and the read/write capabilities of the supported formats. Using this table, you can easily find out whether an image can be converted to a particular format.

If you are going to use ImageGear alpha channels support, please review the section ImageGear Alpha Channel Support.

Detailed information about every ImageGear supported imaging file format or compression can be found in the following sections:

ImageGear Supported Compressions Reference - here you will find information for every ImageGear supported imaging compression.
ImageGear Supported File Formats Reference - provides detailed information about every ImageGear supported format, its ID, versions, encoding type, multi-page and alpha channel support, supported compressions, color spaces and bit depths for read and write, as well as information about ImageGear supported features and filter control parameters.

The section ImageGear Supported Non-Image Data provides detailed information about ImageGear supported metadata.

Encoding vs. Compressing

These two words are often used interchangeably in discussions of graphics file formats. Encoding is actually a broad term under which compression falls. For the sake of clarity, use these terms separately with the following intended meanings:

Encoding - The manner that data is stored when uncompressed (binary, ASCII, etc.), how it is packed (e.g., 4-bit pixels may be packed at a rate of two pixels per byte), and the unique set of symbols used to represent the range of data items.
Compressing - A "physical" rewriting of the graphics data so that it is represented by a smaller set of data.