Image File Extension Registry entry

Specify the default file type, compression and quality for all images scanned using a twain device, and whether these values may be changed at the time of scanning.

Description

The Image File Extension entry specifies the default file type, compression and quality for all scanned images. When the scan is complete, the Add Scanned Image box displays and the nominated values are selected by default unless this Registry entry overrides the display of the Add Scanned Image box.

File extensions known to EMu are BMP, GIF, JPG, JPEG, PCX, PNG, TGA, TIF, TIFF.

Note: PDF can be added as a file format for scanned images, however ImageMagick requires that Ghostscript is installed on the EMu client's machine.

Usage

This Registry entry can be assigned to users, groups and system-wide:

Key	User	Group	System
Key 1	User	Group	System
Key 2	user	group	Setting
Key 3	Setting		Multimedia
Key 4	Multimedia		Image File Extension
Key 5	Image File Extension
Value	format;compression;quality;boolean

where:

format	is the format in which the image will be scanned.
compression	is the type of compression to be used when format is TIFF or PDF. Possible values are JPEG, ZIP, LZW, FAX3, FAX4, PACKBITS.
quality	is a value from 0 to 100 where 100 is lossless (the highest quality possible).
boolean	is true (the Add Scanned Image box will display, allowing these default values to be changed) or false (the Add Scanned Image box will not display and images will be saved automatically with these default values).

Example

This entry specifies that the scanned image should be saved as a TIFF using JPEG compression with a quality setting of 85 (which gives very good compression with minimal loss of quality). The Add Scanned Image box will display, allowing these default settings to be changed:

Key	Setting
Key 1	System
Key 2	Setting
Key 3	Multimedia
Key 4	Image File Extension
Value	TIFF;JPEG;85;true