Figure 3-49 construction of jbig image data, Figure 3-50 bie construction diagram – Canon FAX-L1000 User Manual
Page 244
3-100
FAX-L1000 Chapter 3: Technical Reference
3.2.4 Construction of image data with JBIG Image Compression Encoding
Images are encoded in block units called stripes, as shown in the figure below.
Figure 3-49 Construction of JBIG Image Data
After being encoded, the image data is referred to as BIE (Bi-level Image Entity), and is
constructed from the Bi-level Image Header (BIH) section and the Bi-level Image Data (BID)
section shown in the figure below.
Figure 3-50 BIE Construction Diagram
Document
width (XD)
Document
length (YD)
Stripe length (L0)
JBIG
encoding
JBIG
encoded
Document
BIH
BID
SDE
Header
SDE
SDE
BID
BID
BIE
Stripe
Stripe
Stripe
Floating
marker code
Floating
marker code
Floating
marker code
BIE (Bi-level Image Entity)
BIH (Bi-level Image Header) BID (Bi-level Image Data)
BID (Bi-level Image Data)
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