TIFF 6.0 Specification
Final—June 3, 1992
Not all of the fields described in this section are relevant to the JPEG process
selected by this Field. The following table specifies the fields that are applicable
to each value defined by this Field.
Tag Name
JPEGInterchangeFormat
JPEGInterchangeFormatLength
JPEGRestart Interval
JPEGLosslessPredictors
JPEGPointTransforms
JPEGQTables
JPEGDCTables
JPEGACTables
X
X
X
JPEGProc =1
X
X
X
JPEGProc =14
X
X
X
X
X
X
This Field is mandatory whenever the Compression Field is JPEG (no default).
JPEGInterchangeFormat
Tag
Type
N
= 513 (201.H)
= LONG
=1
This Field indicates whether a JPEG interchange format bitstream is present in the
TIFF file. If a JPEG interchange format bitstream is present, then this Field points
to the Start of Image (SOI) marker code.
If this Field is zero or not present, a JPEG interchange format bitstream is not
present.
JPEGInterchangeFormatLength
Tag
= 514 (202.H)
Type = LONG
N
=1
This Field indicates the length in bytes of the JPEG interchange format bitstream.
This Field is useful for extracting the JPEG interchange format bitstream without
parsing the bitstream.
This Field is relevant only if the JPEGInterchangeFormat Field is present and is
non-zero.
JPEGRestartInterval
Tag
= 515 (203.H)
Type = SHORT
N
=1
105