Post-Correction Nonuniformity

The tailorability of these materials makes them versatile - but also means that any nonuniformity in composition across an array will cause a nonuniformity in cutoff wavelength. The post-correction nonuniformity is especially sensitive to this nonuniformity. 

Post Correction Nonuniformity. The PCNU is the standard deviation of the output after the nonuniformity correction process (see Section 10.4.4, PCNU). We are generally allowed to exclude some pixels from the standard deviation calculation - but any excluded pixels must be declared to be defective. That means that we have some latitude in the PCNU process - we may make PCNU better by excluding anomalous pixels - but at the cost of having more defective pixels. If the spec is very sfringent, we may need to devise an algorithm that finds the best compromise between PCNU and the number of defects. 

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