BTR

Full Name	Brooktrout
Format ID	ImGearFormats.BRK
File Extension(s)	.brk, .301,
Data Type	Raster image
Data Encoding	Binary
IG Multipage Support	No
IG Alpha Channel Support	No
IG Metadata Update Support	No
IG Platforms Support	WIN32, WIN64, Unix, Unix64, MAC, .NET, .NET64, Silverlight

ImageGear Supported Versions

Version 1

ImageGear Supported Features

IGFilterFormatFlags.DETECTSUPPORT - autodetect
IGFilterFormatFlags.PAGEREADSUPPORT - single page file reading
IGFilterFormatFlags.PAGEINSERTSUPPORT - single-page file writing

ImageGear Read Support

ImGearCompressions.CCITT_G3 - Indexed RGB: 1 bpp
ImGearCompressions.CCITT_G32D - Indexed RGB: 1 bpp

ImageGear Write Support

ImGearCompressions.CCITT_G3 - Indexed RGB: 1 bpp
ImGearCompressions.CCITT_G32D - Indexed RGB: 1 bpp

When saving an image, the image must have horizontal resolution of 200 DPI and vertical resolution of 100 or 200 DPI.

ImageGear Filter Control Parameters

None

Comments

A Brooktrout file consists of a CCITT Group 3 (G3) compressed file with a 128-byte header designed by Brooktrout Technology. The header fields include a constant that identifies the file as Brooktrout, a version number, the horizontal and vertical resolutions of the image in dots/mm, the number of bits per pixel, and the number of pixels per line.