Types of File Comments (original) (raw)
LEAD supports reading and writing of image file comments.
For more information about file comments, refer to RasterCodecs.ReadComment and RasterCodecs.WriteComment.
Image Metadata, Comments, and Tags
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
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.
Comments
Tags
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 ).
Resources
Below is a table providing reference material related to Exif (TIFF and JPEG) metadata: