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Many new Windows Image Acquisition (WIA) API are included in Windows Image Acquisition (WIA) 2.0. Moreover, there are some forward and backward incompatibilities between Windows Image Acquisition (WIA) 1.0 and the WIA 2.0 service that ships with Windows Vista. Some interfaces, structures, properties, and property values of WIA 1.0 are not supported by, and applications using them will not run on, Windows Vista and later. Similarly, applications using the new interfaces, structures, properties, and property values introduced with WIA 2.0 (see below) will not run on OS versions prior to Windows Vista.
Both TWAIN and WIA can work with scanners and cameras as long as the driver is installed. Generally, if your application is going to interact with scanners most of the time, especially if old scanners need to be supported, TWAIN is recommended. For cameras, WIA offers better support. 35mm/IX240 Film Scanner. Product Archives. Find information on products that are no longer manufactured. Note that information is not available for all products no.
New API for WIA 2.0
Constants: Lists Updated for WIA 2.0
New Structures in WIA 2.0
| Topic | Contents |
|---|---|
| DEVICEDIALOGDATA2 | Defines the data needed to call a device dialog. |
| WIA_RAW_HEADER | The WIA_RAW_HEADER structure defines an image in the RAW data format of a device and enables applications to use RAW format in WIA transfers. |
| WiaTransferParams | The WiaTransferParams is transmitted to an application during a data transfer by the WIA run-time system to the IWiaTransferCallback::TransferCallback method. |
New Interfaces in WIA 2.0
| Topic | Contents |
|---|---|
| IEnumWiaItem2 | Used by applications to enumerate IWiaItem2 objects in the item tree's current folder. |
| IScanProfile | The IScanProfile interface represents a single scan profile and enables applications to set and get the properties of the profile. |
| IScanProfileMgr | The IScanProfileMgr interface provides methods for creating, opening, deleting, and managing scan profiles. |
| IScanProfileUI | The IScanProfileUI interface enables applications to display a dialog box so that users can create, modify, and delete scan profiles. |
| IWiaAppErrorHandler | The IWiaAppErrorHandler interface enables applications to display error windows (during data transfers) from which the user can choose whether to continue, cancel, or abort the transfer. |
| IWiaDevMgr2 | The IWiaDevMgr2 interface is used to create and manage image acquisition devices and to register to receive device events. |
| IWiaErrorHandler | The IWiaErrorHandler interface provides methods to handle errors that may occur when an application requests image data, whether for preview or final bits. |
| IWiaImageFilter | The IWiaImageFilter interface is an extension interface implemented by image processing filter developers and called by WIA 2.0. |
| IWiaItem2 | The IWiaItem2 interface provides applications with the same functionality as the IWiaItem interface (the ability to query devices to discover their capabilities, to access data transfer interfaces and item properties, and to control the device). It also provides application with the ability to dynamically create and use image processing filters that can come as extensions of the WIA 2.0 device drivers provided in Windows Vista. |
| IWiaPreview | The IWiaPreview interface caches unfiltered images internally and passes them through image processing filters. |
| IWiaSegmentationFilter | The IWiaSegmentationFilter interface detects sub-regions of an image stream and makes separate IWiaItem2 items for each. |
| IWiaTransfer | The IWiaTransfer interface provides stream-based transfer of data. |
| IWiaTransferCallback | The IWiaTransferCallback interface receives callbacks during a data transfer. |
| IWiaUIExtension2 | The IWiaUIExtension2 interface provides methods that replace the default, system-supplied user interface with a custom user interface, and that provide a custom device icon. Device vendors can implement this interface to provide custom user interfaces for their devices. |
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New and Changed Overviews for WIA 2.0
| Topic | Contents |
|---|---|
| Constants | |
| Functions | |
| Interfaces | |
| Scan Profile Schema | |
| Structures | |
| Transferring Image Data in WIA 2.0 | |
| WIA Device Type Specifiers | |
| WIA Property Constants |
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Feedback
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- 2,900 dpi true optical resolution scanning, 12-bit A/D converter incorporating 16-/8-bit output for vivid images
- Exclusive SCANNER NIKKOR ED high-resolution/high-performance optics (7 elements in 4 groups including 3 ED glass elements) for reduced color aberration and minimized image distortion
- Newly developed custom CCD reduces image noise, and provides clear resolution
- Proprietary LED technology ensures consistently accurate color reproduction
- Fast 42-sec. scanning at 2,900 dpi (including image transfer to display)
- New setup function for color negative film, featuring intelligent tone and color auto-correction, enables fine reproduction of orange-tinged negative film
- Quick AF & Quick Preview
- Various film formats (35mm [135], IX240, etc.)
- Easy-to-connect USB interface
- Improved Color Management System accuracy
- Digital ICE³™ automatic digital image correction function
- Digital ICE™ (Image Correction & Enhancement), a refined version of the function known as 'CleanImage' in the earlier LS-2000 and LS-30, removes dust, scratches and finger prints from scanned images Digital ICE™ applies to color film and color process monochrome film, but is not recommended for use with Kodachrome film.
- Digital ROC™ (Reconstruction of Color) restores faded images to true, brilliant color by determining ideal color tone for each image.
- Digital GEM™ (Grain Equalization & Management) equalizes image grain resulting in a smoother overall image.
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Digital ICE³ (Digital ICE cubed) is Digital ICE, Digital ROC and Digital GEM.
Digital ICE³ (Digital ICE cubed), Digital ICE, Digital ROC and Digital GEM are trademarks of Applied Science Fiction Inc.
Digital ICE³ (Digital ICE cubed) are technologies developed by Applied Science Fiction Inc.