ICAP_IMAGEFILTER

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TWAIN Capability: ICAP_IMAGEFILTER

ICAP_IMAGEFILTER

Description

For devices that support image enhancement filtering. This capability selects the algorithm used to improve the quality of the image.

Application

TWIF_LOWPASS is good for halftone images. TWIF_BANDPASS is good for improving text. TWIF_HIGHPASS is good for improving fine lines.

Values

Type: TW_UINT

Value after MSG_OPENDS: (may be remembered from a previous session)

After MSG_RESET/MSG_RESETALL: (selected by the data source writer)

Allowed Values: TWIF_NONE TWIF_AUTO TWIF_LOWPASS TWIF_BANDPASS TWIF_HIGHPASS TWIF_TEXT TWIF_FINELINE

Containers

MSG_GET TW_ONEVALUE TW_ENUMERATION

MSG_GETCURRENT TW_ONEVALUE

MSG_GETDEFAULT TW_ONEVALUE

MSG_SET TW_ONEVALUE

MSG_SETCONSTRAINT TW_ONEVALUE

TW_ENUMERATION

MSG_RESET TW_ONEVALUE

MSG_QUERYSUPPORT TW_ONEVALUE

Required By

None

TWAIN Version Introduced

Version 1.8

Related

TWAIN Notice

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