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Entry  Fri Jul 23 10:33:08 2010, Aidan, Computing, Hartmann sensor, Dalsa camera ADC 8th digitizer error  histogram_of_dalsa_intensity.pdf
    Reply  Fri Jul 23 19:52:49 2010, Aidan, Computing, Hartmann sensor, Dalsa camera ADC 8th digitizer error  image-location-of-excess_pixel_count_pixels.jpg
Message ID: 70     Entry time: Fri Jul 23 10:33:08 2010     Reply to this: 73
Author: Aidan 
Type: Computing 
Category: Hartmann sensor 
Subject: Dalsa camera ADC 8th digitizer error  

I plotted a histogram of the total intensity of the Hartmann sensor when illuminated and found that the 128 count problem extends all the way up through the distribution. This isn't unreasonable since that digitizer is going to be called on mutliple times.

First things first, the value of 128 equals a 1 in the 8th digitizer, so for a 16-bit number in binary, it looks like this: 0000 0000 1000 0000 and in hex-code 080

The values of the peaks in the attached distribution are as follows:

 

Number of counts Hex Code

128

 080
384  180
640  280
896  380
1152  480
1408  580
1664  680
1920  780
2176  880
2432  980
2688  A80
2944  B80
3200  C80

 

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