BTR

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

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.