Szerkesztő:Vobence/munka
Sablon:Infobox Windows component Windows Photo Gallery is a photo management, tagging, and editing tool development by Microsoft, and is included with all editions of Windows Vista. Themed photo slideshows with smooth transitions are only available in the Home Premium and Ultimate editions.
An upgraded version of Photo Gallery released under the Windows Live brand known as Windows Live Photo Gallery which can be downloaded from Windows Live Installer and also runs on Windows XP includes new features viewing color histogram of an image, panoramic stitching and auto-tagging during importing and also the ability to share photos by uploading them to Windows Live Spaces or Flickr.
Features
[szerkesztés]Windows Photo Gallery provides the ability to organize digital photo collection in its Gallery view, by adding titles, rating, captions, and custom metadata tags to photos. An Edit mode is also present, which allows photos to be edited for exposure or color correction. It also provides other basic photo editing functions, such as resizing, cropping, red-eye reduction etc, and also allows printing photos, via the Photo Printing Wizard.
There is limited support for tagging and managing video files, though not editing them. It integrates with Windows DVD Maker to provide integrated DVD burning features. Windows Photo Gallery can also be used to acquire photos and videos from digital cameras, scanners, and other sources.
Format support
[szerkesztés]Windows Photo Gallery uses the Windows Imaging Component framework, that can be used by any codec to integrate with the image handling capabilities of the operating system and other applications that use WIC. Windows Vista ships with codecs for common formats like BMP, JPG, PNG, TIFF and HD Photo. However, GIF images do not appear in the gallery.[1] (workaround: rename the .gif files to .jpg)
By means of WIC which is included in Windows Vista and also available for Windows XP, developers can provide support for any image format at the operating system level.[2] Some camera vendors have developed WIC codecs for their proprietary RAW image formats. Windows Photo Gallery detects when a codec is needed, and provides a link to the relevant download location for the codec. If the appropriate codecs are installed, RAW images can be viewed by double-clicking them. However, Windows Photo Gallery does not automatically associate with RAW or other image file extensions for which codecs have been installed. Also, the touch-up capabilities are disabled for RAW images. As of November 2007, Canon, Nikon, Sony, Olympus and Pentax have released WIC codecs.[3] A commercial DNG codec is also available from Ardfry Imaging. [4]
Tagging
[szerkesztés]Windows Photo Gallery uses the concept of hierarchical tagging (e.g. People/Jim, Places/Paris).[forrás?] It does not have the ability to group tags in the same manner as Photoshop software. Also, deleting a tag from Windows Photo Gallery will also remove it from all photos in the utility.
Adobe's Extensible Metadata Platform (XMP) metadata standard, a descendent of the ubiquitous Exif standard which almost all digital cameras currently support, is also supported. This allows for data such as the tags to be stored and edited much more efficiently than Exif or IPTC. However, edits to XMP data on JPEG images will not be visible on photos if they are transferred to a Windows XP-based system. Date tags, for example, will revert to their original Exif information even if XMP-related changes have been made.
Problems
[szerkesztés]Major issue: EXIF metadata corruption issue.
If and whenever Window Photo Gallery (WPG) modifies a JPG it changes the EXIF metadata subsequent editing of the file in another editor causes this resolution error. What in the EXIF data that gets corrupt is unknown.
Here is one scenario; scanning in photos that have no EXIF data. Allowing WPG to rotate the file for a portrait shot then subsequent editing in other graphic editors corrupts the EXIF data... but only by WPG. The photo can still be opened correctly with other editors. Although, now the EXIF data in Vista says something like 166450x82 dpi for the vertical and horizontal resolutions rather then the actual 96x96 dpi (the photo resolution in this scenario.)
The reason Vista thumbnail viewer also has this problem is because WPG is the display engine used by Vista OS to render the thumbnails.
Solutions:
Don't allow WPG to edit/modify anything. If in the EXIF metadata Origin:Program name: field, if it says Microsoft Windows Photo Gallery then WPG has already at one time modified the file. If this data field is blank the file should be original and be OK.
If original file needs modified, i.e. rotated because it was a portrait shot, then rotate the picture in a graphics editor other then WPG, i.e. photoshop or PSPX. This will prevent the resolution information within the EXIF metadata from being corrupted.
If you don't have the original anymore or if the photo was a download and has be modified by WPG, i.e. the EXIF field Origin:Program name: says "Microsoft Windows Photo Gallery" then try opening the file into a graphics editor that will display the image correctly, then do a screen capture of the image and paste as a new image. By performing a copy and past of the image from within PSPX this also copies the EXIF data and whatever in there that is corrupting the preview in Vista.
See also
[szerkesztés]References
[szerkesztés]- ↑ Windows Help and How-to: Choose which pictures and videos are displayed in Windows Photo Gallery. Microsoft. (Hozzáférés: 2007. április 28.)
- ↑ RAW Support in Windows Vista. Microsoft PhotoBlog. MSDN Blogs, Hiba: Érvénytelen idő. (Hozzáférés: 2007. február 18.)
- ↑ Windows Vista Team Blog : Understanding RAW Image Support in Windows Vista
- ↑ DNG Thumbnail and Preview Support for Windows Photo Gallery and Windows Live Photo Gallery