7
APPENDIX
Address
Data Type
Size
Data
Note
00
00
0x18A2
long 4
bytes
00
00
End of Directories
(NULL Pointer)
0x18A6
:
:
:
:
char [814]
814
bytes
Buffer area
When the length of data excceds 4
bytes, TAG data is written here.
0x1BD4
:
TIFF Image Data
:
■
TIFF Image Data structure
The directory is followed by a file (TIFF image data area) containing the actual image
data. The amount of data per pixel is 16 bits (2 bytes). For instance, the size of the image
data file containing a 512
×
512 pixel image with 16 bits per pixel is 512 pixels
×
512
pixels
×
2 bytes = 524,288 bytes.
■
Overall file size
The size of the topographic image file is given by Header (10 bytes) + Image Header
(6,090 bytes) + Directory (1,024 bytes)
+ Image Data (524,288 bytes) = 531,412 bytes.
TMPM5200-2
7-39