Night vision integrated performance model: impact of a recent change on the model's predictive accuracy

The U. S. Army has adopted the targeting task performance (TTP) image quality metric for formal analyses of electro-optical imager performance. The most recent release of the model, NVIPM, changes the way TTP is calculated in order to improve the accuracy of facial identification. Predictions of the original and modified models are compared to both laboratory and field data. The change degrades NVIPM predictive accuracy for the tactical vehicle target set which is often used in hardware procurement specifications.