Image extractors use inconsistent metadata keys and formats for common features
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Key: TIKA-442
URL: https://issues.apache.org/jira/browse/TIKA-442
Project: Tika
Issue Type: Improvement
Components: metadata, parser
Affects Versions: 0.7
Reporter: Nick Burch
Priority: Minor
Currently Tika has a number of parsers for image formats, but the way they
return their data is inconsistent. For example:
Jpeg: "Image Width" = "420 pixels", "Data Precision" = "8 bits"
Gif: "width" = "420"
Png: "width" = "420", "IHDR" = ".... bitDepth = 8 ....."
Bmp: "width" = "420", "BitsPerSample" = "8 8 8"
I think that the common keys, such as width and height, should be returned in a
consistent format of key and value. If someone would like to suggest the
namespace for this (maybe under XMDPM), and the short or long form (eg 420 vs
420 pixels), then I'm happy to work up a patch for this
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