Compaq manual B. Calibration Files, mar345 Program Manual

Models: mar345

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mar345 Program Manual

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B. Calibration Files

Each scanner comes with 2 scanner specific calibration files. These files must reside in directory $MARTABLEDIR and are called mar2300.XXX and mar3450.XXX, where XXX is the three−digit serial number. The file contain flat field and geometrical corrections require d for producing Cartesian images out of a spiral scan.

File mar2300.XXX is used for scans at pixelsizes of 0.15mm (modes 2300, 2000, 1600 an d 1200) and has a typical size of 73 MB.

File mar3450.XXX is used for scans at pixelsizes of 0.10mm (modes 3450, 3000, 2400 an d 1800) and has a typical size of 103 MB.

Both files are binary files. They feature an Ascii−file header that can be looked up usin g program catmar.

A typical output of command "catmar mar2300.120 " looks like this:

Format type: mar 345 ...

==============================================================

Line At byte Contents

==============================================================

4

(

192)

PROGRAM

improve Version 2.8

 

 

 

5

(

256)

DATE

Wed Feb

2 12:00:40 2000

 

6

(

320)

SCANNER

120

 

 

 

 

 

 

 

7

(

384)

PIXEL

LENGTH 75

 

HEIGHT 150

SUBPIXELS 25

8

(

448)

PHIOFF

269.970

 

 

 

 

 

 

9

(

512)

CUTOFF

0.000

 

 

 

 

 

 

 

10

(

576)

SCALE

32767.000

 

 

 

 

 

 

11

(

640)

GAIN

1.000

 

 

 

 

 

 

 

12

(

704)

NUMBER

PIXELS 7766361

NEIGHBOURS 25199739

13

(

768)

MODE

2300

X

0

Y 1149

ROFF

0

SKIP 144

14

(

832)

MODE

2000

X

0

Y

999

ROFF

0

SKIP 144

15

(

896)

MODE

1600

X

0

Y

800

ROFF

0

SKIP 809

16

(

960)

MODE

1200

X

0

Y

600

ROFF

0

SKIP 809

17

( 1024)

MODE

2300

PIX

7766361

POS

4096

 

18

( 1088)

MODE

2000

PIX

5956761

POS

17151502

19

( 1152)

MODE

1600

PIX

3845618

POS

37076767

20

( 1216)

MODE

1200

PIX

2190418

POS

52798207

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Page 40
Image 40
Compaq manual B. Calibration Files, mar345 Program Manual