Diff of JPEG/APP14

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.
• Go to JPEG/APP14.

[[JPEG/APP]] > [[JPEG/APP14]]

- https://www.itu.int/rec/T-REC-T.872-201206-I
>
Transform flag values of 0, 1 and 2 shall be supported and are interpreted as follows:
>
0 – CMYK for images that are encoded with four components in which all four CMYK values are complemented; RGB for images that are encoded with three components; i.e., the APP14 marker does not specify a transform applied to the image data.
>
1 – An image encoded with three components using YCbCr colour encoding.
>
2 – An image encoded with four components using YCCK colour encoding.

* APP14 [#qdef59c6]

- APP１４ (0xFFEE)　Adobe セグメント
--  http://hp.vector.co.jp/authors/VA032610/JPEGFormat/marker/APP14Adobe.htm

 Transformフラグが２の場合、YCCKとして画像を変換
 Transformフラグが１の場合、YCbCrとして画像を変換
 Transformフラグが０の場合、特定されませんが、SOFのコンポーネントが３つの場合RGB、４つの場合CMYKと仮定して変換するようです。

- カラースペースの変換と一般的なマーカー
--  https://docs.oracle.com/javase/jp/7/api/javax/imageio/metadata/doc-files/jpeg_metadata.html#color


- http://www.lprng.com/RESOURCES/ADOBE/5116.DCT_Filter.pdf
- https://www.itu.int/rec/T-REC-T.872-201206-I

* カラースペース [#n1837239]

- [[RGB]]
- [[YCbCr]]
- [[CMYK]]
- [[YCCK]]