Black Stripe Detection » History » Version 4
William Rice, 10/02/2018 10:31 PM
| 1 | 1 | William Rice | h1. Black Stripe Detection |
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| 3 | 3 | William Rice | For users of the K2 camera. At NYSBC we occasionally lose a channel during collection, resulting in a black stripe in the image. More rarely, counted movies start coming out the wrong size, off by 2 pixels in the X and Y axes. This node will detect both types of problems and throw an warning message. Particularly useful feature if slack messaging is in use. |
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| 5 | h2. Adding the node |
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| 6 | 2 | William Rice | |
| 7 | 1 | William Rice | Binding needs to be made from Exposure to the Black Stripes Detector Mode. Binding is AcquistionImagePublishEvent. |
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| 9 | h2. Use |
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| 10 | 2 | William Rice | |
| 11 | 1 | William Rice | Control panel has 2 options, whether to detect black stripes and whether to pause on error. Turning it on means every exposure image will be analyzed for lack of signal in all 8 stripes. Will output the mean and sd of each stripe in the text window. A blaxk stripe is defined as having mean=0 and sd=0. Additionally tests the size to make sure it is K2 standard size (3710 x 3838). |
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| 13 | h2. Testing |
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| 14 | 2 | William Rice | |
| 15 | 1 | William Rice | Works on images in both orientations (portrait and landscape). Works on super-res images (bins to counting before testing). Does not seem to affect collection rates. Calculations are relatively simple and no pausing is needed during calculations |
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| 17 | h2. Notes |
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| 18 | 2 | William Rice | |
| 19 | 4 | William Rice | Note: Pause feature is not yet implemented in the code. Can be checked but no pausing is done. May add a feature to only check every N images. |