Cheetah Python Cameras User Manual | CoaXPress (CXP) Interface
August 27, 2019
Page
83
of
86
Rev 1.0
STEP 3: Adjust Defective Pixel Coordinates
As described in
STEP 1
, if the first pixel coordinates are 0, 0, you must adjust the defective
pixel coordinates by adding 1 to both coordinates as shown in the following:
593 (+1), 4816 (+1) = 594, 4817
•
If the frame grabber pixel coordinates are Column (X), Row (Y), then go to
STEP 4
.
•
If the frame grabber pixel coordinates are Row (X), Column (Y), then transpose the
coordinates to the form Column, Row and then go to
STEP 4
.
STEP 4: Add Defective Pixel Coordinates to Defective Pixel Map
Place the defective pixel coordinates in the Defective Pixel Map file in ascending
(increasing) numerical order of the Y (row) coordinate. The value of all Y coordinates should
progressively increase as you look down the list of X, Y coordinates.
Example 1: Different Y coordinates
Example 2: Identical Y coordinates
-- Defective Pixel Map,
-- Date: 4.12.2018,
-- Model#: CXP-C5180M-RF,
-- Serial#: LAC001,
:Table,
-- Column(X),Row(Y)
701,1017
100,1018
4325,1019
2241,1020
458,1021
1712,1053
914,1067
3954,1546
2516,1670
3451,3331
1111,4149
95,
4364
594,
4817
433,
4828
205,4899
-- Defective Pixel Map,
-- Date: 4.12.2018,
-- Model#: CXP-C5180M-RF,
-- Serial#: LAC001,
:Table,
-- Column(X),Row(Y)
650,
1017
698,
1017
701,
1017
100,1018
4325,1019
2241,1020
458,1021
1712,1053
914,1067
3954,1546
2516,1670
3451,3331
1111,4149
95,4364
433,4828
205,4899
As shown in the
Example 1
above, the Y coordinate of
594, 4817
is higher than
4364
and
lower than
4828
. Do not add defective pixel coordinates at the end of the list unless the Y
coordinate is the highest of all Y values.
If adding a defective pixel with a Y location identical to one or more other defective pixels,
insert its coordinates based on the order of increasing X location.
As shown in the
Example 2
above, the Y coordinate of
698, 1017
is identical to two other
defective pixels. Place its coordinates between
650,
1017 and
701,
1017 because its X
location (698) is higher than 650 but lower than 701.
STEP 5: Save your DPM/HPM
•
Save your Defective Pixel Map with the file extension .dpm.
•
Save your Hot Pixel Map with file extension .hpm.
Row coordinates are
in ascending order
(increasing Y values).
Column coordinates are in
ascending order (increasing
X values).