movii
6/29/2017 - 12:12 PM

笔记：使用 JavaScript 读取 JPEG 文件 EXIF 中的 Orientation - 5. Brief on entry of IFD(Image File Directory):

笔记：使用 JavaScript 读取 JPEG 文件 EXIF 中的 Orientation - 5. Brief on entry of IFD(Image File Directory):

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>> IFD(Image Directory Directory) entry structure(12 bytes):
+------------+--------+------------+----------+
|    XXXX    |  XXXX  |  XXXXXXXX  | XXXXXXXX |
+------------+--------+------------+----------+
| Tag number | Format | Components |   Value  |
+------------+--------+------------+----------+