An Accurate Method For Measuring The Spatial Resolution Of Integrated Image Sensors

Point Spread Function Estimation of Image Intensifier Tubes

“…al. [7] describe an alternative method where the output of a single pixel is monitored while the knife-edge is shifted in sub-pixel increments. This avoids the problems due to spatial distortion and provides an accurate PSF estimate in a local area.…”

“…Both techniques are limited to estimating the 1-D PSF; however, the tube may be rotated relative to the plate in order to characterize the 2-D PSF. We have implemented the technique in [7] for an image intensifier-based system.…”

Three-dimensional flaw reconstruction using a real-time X-ray imaging system

“…Re ichenbach technique relies heavily on the inherent uniformity of the CCD array, while the non-uniform magnification caused by pincushion distortion and other aber rations (Csorba, 1985) prohibits accurate registration of edge scans acquired over a large area of the intensifier screen. Classer, Vaillant, and Chazallet (1988) describe an alternative method where the output of a single pixel is monitored while the knife-edge is shifted in sub-pixel increments. This avoids the problems due to spatial distortion and provides an accurate PSF estimate in a local area.…”