YY/T 1587-2018 Translated English of Chinese Standard. (YYT 1587-2018, YY/T1587-2018, YYT1587-2018): Medical endoscopes - Video endoscopes
https://www.chinesestandard.net, 18.05.2019 - 31 Seiten
This standard specifies the terms and definitions, requirements, test methods for medical video endoscopes. This standard applies to medical video endoscopes for visible spectrum imaging in endoscopy and surgery. This standard does not apply to medical video endoscopes for special spectral and non-visible spectral imaging.
accompanied data angular frequency arithmetic mean autofocus average value brightness channel brightness response characteristics brightness signal component brightness value carried out according Changing the brightness channel of red collected image critical brightness data as provided data list declare the characteristics different brightness levels distance d0 elec-opto conversion function endoscope to photograph field angle formula function of OECF GB/T give the nominal illumination light luminosity Image collector linear fitting Luminometer luminous intensity measured target Measuring working distance Mechanical properties method as specified modulation transfer function multiple camera modes nominal value Nyquist frequency optical output brightness output signal values photograph the test pixels Potassium permanganate root mean square self-effect of illumination SFR value sine-wave small gray-scale block spatial frequency response specified in Appendix standard deviation star map static image tolerance test light source Test method test report test target tested video endoscope tolerance range varying noise Viewing of video White balance