Automatic lateral calibration of tunneling microscope scanners

Simulating Scanning Tunneling Microscope

Multicenter comparison of calibration and cross calibration of PET scanners.

UNLABELLED The purpose of this study was to compare the calibration of PET scanners and their cross calibration to peripheral devices in a multicenter study. METHODS Twenty-three dedicated PET scanners were investigated, applying standardized protocols. To ensure exact determination of the activity used, dose calibrators were checked using (68)Ge standards. RESULTS Nine of 19 and 11 of 20 s...

Color Calibration of Scanners Using Polynomial Transformation

Digital imaging is a rapid growing area with the developments in computer technology. Digital color use has become a conventional tool in many disciplines, such as cartography remote sensing and photogrammetry. The need for better color quality enforces digital imaging industry to produce devices with less color distortions. Despite the today’s advanced level of technology, it is known that inp...

New Calibration Scheme for Panoramic Line Scanners

In the DLR department of optical information technology exists long experience and practical knowledge in geometrical calibration of opto-elctronical systems especially CCD-line scanners. An approved method is the single pixel illumination by collimated light. The accuracy of this method depends of the precision of the used goniometer and is in the order of 2 arcsec. The disadvantage of this me...

Test and Calibration Procedures for Image Scanners

Film scanners will be used for many years to come and it is well known that not even the best and most expensive scanners are not free of errors. Scanner testing and calibration procedures are necessary to achieve a high geometric and radiometric scanner performance. It is also a means to produce or make use of cheaper scanners that do not rely on expensive mechanical positioning and optical pa...