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Many image gallery programs also recognise Exif data and optionally display it alongside the images. Software libraries, such as libexif [9] for C and Adobe XMP Toolkit [10] or Exiv2 [11] for C++, Metadata Extractor [12] for Java, PIL/Pillow for Python, LEADTOOLS or ExifTool [13] for Perl, parse Exif data from files and read/write Exif tag values.
Metadata removal tools are also commonly used to reduce the overall sizes of files, particularly image files posted on the Web. For example, a small image on a website, which may contain metadata including a thumbnail image , can easily contain as much metadata as image data, thus removal of that metadata can halve the file size.
ExifTool is a free and open-source software program for reading, writing, and manipulating image, audio, video, and PDF metadata.As such, ExifTool classes as a tag editor.It is platform independent, available as both a Perl library (Image::ExifTool) and a command-line application.
Image metadata which can be useful for inclusion in any CMS environment or database. These include the exposure settings, camera/scanner/lens model, date (and, optionally, place) of shoot/scan, authoring information and other. Some raw files contain a standardized metadata section with data in Exif format. An image thumbnail
For uncompressed image data, an Exif file is straight off a TIFF file with some private tags. For JPEG compressed image data, Exif uses the JPEG File Interchange Format but embeds a TIFF file in the APP1 segment of the file. The first IFD (termed 0th in the Exif specification) of that embedded TIFF does not contain image data, and only houses ...
ViewMinder accepts images in the formats jpg, bmp, png and uncompressed tif. The technical data (Exif or DCF) embedded in files from digital cameras is imported into the database at the same time and can later be used in searches. To save disc space, tif images can be converted to png during import and converted back during export.
Autopsy includes a graphical user interface to display its results, wizards and historical tools to repeat configuration steps, and plug-in support. Both open-source and closed-source Modules exist for the core browser, including functionality related to scanning files, browsing results, and summarizing findings.
Assuming the images are timestamped (e.g. contains a Date Taken Exif tag) the user can specify a time interval, for example one hour, and the geo-clustering plug-in will look at the currently viewed set of images and group together pictures taken within up to one hour from each others, forming "clusters" of "nearby" images. Similarly, images ...