Publication: Magyar Közlöny
Issue: MK-2004-25 (Year: 2004, Number: 25)
Era: 2004-2010
Section: 
Paragraph Index: 797

2. Calibration targets for establishing the ground resolution of optical cameras shall consist of a series of groups of alternating black and white bars. Each group of bars shall consist of a minimum of two black bars separated by a white bar. The width of black and white bars within a group shall remain constant. The width of the bars in groups of bars in the calibration target shall change in steps sufficient to ensure accurate measurement of the ground resolution. The length of the bars shall remain constant within each group. The contrast ratio of the black to white bars shall be consistent throughout the target and shall be at least 5 to 1 (equivalent to a modulation of 0.66).

Source: https://magyarkozlony.hu/hivatalos-lapok/2c76251dd26aad2357aa93e94ceb4cb75b90d4fd/dokumentumok/35587f52b853d8c0a137d12bce2b73fe714736df/letoltes