References ▼
LEAD supports reading and writing of image file comments.
For more information about file comments, refer to RasterCodecs.ReadComment and RasterCodecs.WriteComment.
Some file formats can contain comments, and some cannot, and each file format has its own set of comment types.
Exif files contain either uncompressed TIFF images or compressed JPEG images. These files can contain many comment fields of various types called metadata.
Metadata refers to extra information stored with the image file that is not necessary for decoding the image. Metadata can contain comments describing the contents in the file format.
A comment in the context of TIFF file formats, refer to metadata that can be read from the file or saved to it. For example, a TIFF comment to describe the file is saved using the RasterCommentMetadataType.Description tag.
A tag identifies data that describes content in a file format, such as TIFF. Tags is a collection contained in the file format (e.g., tags to read\write TIFF metadata ).
Below is a table providing reference material related to Exif (TIFF and JPEG) metadata:
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