Baumer 11192208, Руководство по эксплуатации

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V2.6 | 8/30/2022 | 1120758
Correction Algorithm (Pixel Correction)
On Baumer cameras the problem of defect pixels is solved as follows:
▪ Possible defect pixels are identified during the production process of the camera.
▪ The coordinates of these pixels are stored in the factory settings of the camera.
▪ Once the sensor readout is completed, correction takes place:
▪ Before any other processing, the values of the neighboring pixels on the left and the
right side of the defect pixels, will be read out. (within the same bayer phase for
color)
▪ Then the average value of these 2 pixels is determined to correct the first defect
pixel
▪ Finally, the value of the second defect pixel is is corrected by using the previously
corrected pixel and the pixel of the other side of the defect pixel.
Examples for the correction of defect pixels
7 12 99
98 8
7 12 98 8
Step 3
7
7 12 10 8 7
Acutal state
Step 1
Correction
Step 2
7 12 10 8 7 6 5
7 12 99 8
7 12 8 10
7 12 10 8 7 6
Acutal state
Step 1
Correction
Step 2
7 12 99 8 8
7 12 8 8 10
Acutal state
Step 1
Correction
13
13
7 12 99 8 98 8 68 18 15
7 12 8 98 8 68 18 15
Step 3
7
7 12 8 8 68 18 15 7 7
Acutal state
Step 1
Correction
Step 2
7 12 8 8 18 15 7 7 11
7 12 99 8 98 8
7 12 8 98 8 7
7 12 8 8 7 6
Acutal state
Step 1
Correction
Step 2
5
5
13 99
98 13
99 5
5
5 99
98
5
Example 1
Example 1
Example 1
Example 2
Example 2
1 defect pixel
2 defect pixel
3 defect pixel
General Information (Defect Pixel List)
As stated previously, this list is determined during the camera's production and stored in
the factory settings.
Additional hot or cold pixels can develop during the lifecycle of a camera. If this happens,
Baumer gives you the option to add their coordinates to the defect pixel list.
You can determine the coordinates
*)
of the affected pixels and add them to the list. Once
the defect pixel list is stored in a user set, pixel correction is carried out for all coordinates
on the defect pixel list.
Notice
There are defect pixels, which occur only under certain environmental parameters.
These include temperatures or exposure settings.
Complete defect pixels that occur in your application.
*) Position in relation to full frame format (raw data format)
defect pixel
corrected pixel (red)
corrected pixel (green)