Black Stripe Detection » History » Revision 2
Revision 1 (William Rice, 10/02/2018 10:28 PM) → Revision 2/6 (William Rice, 10/02/2018 10:29 PM)
h1. Black Stripe Detection 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 moved 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. h2. Adding the node Binding needs to be made from Exposure to the Black Stripes Detector Mode. Binding is AcquistionImagePublishEvent. h2. Use 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). h2. Testing 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 h2. Notes Note: Pause feature is not yet implemented in the code. Can be checked but no pausing is done.