JEITA CP-3451
- 22 -
ReferenceBlackWhite
The reference black point value and reference white point value. No defaults are given in TIFF, but the values
below are given as defaults here. The color space is declared in a color space information tag, with the default
being the value that gives the optimal image characteristics Interoperability these conditions.
Tag
=
532 (214.H)
Type
=
RATIONAL
Count
=
6
Default
=
[0, 255, 0, 255, 0, 255] (when PhotometricInterpretation is RGB)
[0, 255, 0, 128, 0, 128] (when PhotometricInterpretation is YCbCr)
D. Other Tags
DateTime
The date and time of image creation. In this standard it is the date and time the file was changed. The format is
"YYYY:MM:DD HH:MM:SS" with time shown in 24-hour format, and the date and time separated by one blank
character [20.H]. When the date and time are unknown, all the character spaces except colons (":") may be filled
with blank characters, or else the Interoperability field may be filled with blank characters. The character string
length is 20 bytes including NULL for termination. When the field is left blank, it is treated as unknown.
Tag
=
306 (132.H)
Type
=
ASCII
Count
=
20
Default
=
none
ImageDescription
A character string giving the title of the image. It may be a comment such as "1988 company picnic" or the like.
Two-byte character codes cannot be used. When a 2-byte code is necessary, the Exif Private tag UserComment is
to be used.
Tag
=
270 (10E.H)
Type
=
ASCII
Count
=
Any
Default
=
none
Make
The manufacturer of the recording equipment. This is the manufacturer of the DSC, scanner, video digitizer or other
equipment that generated the image. When the field is left blank, it is treated as unknown.
Tag
=
271 (10F.H)
Type
=
ASCII
Count
=
Any
Default
=
none
Model
The model name or model number of the equipment. This is the model name of number of the DSC, scanner, video
digitizer or other equipment that generated the image. When the field is left blank, it is treated as unknown.
Tag
=
272 (110.H)
Type
=
ASCII
Count
=
Any