The target is optimised for use with pixels per metre (ppm) but can be configured to align precisely with pixels per foot (ppf). This provides a means of quantifying percentage Target Image Height (%TIH) as well as quantifying the discernible pixel density. VIC is a 1600 x 400mm CCTV Target aligned with the requirements of IEC 62676-4:2014. The CCTV Video Image Calculator (VIC) & Screen Assessment Matrix (SAM) is provided as a kit, which comprises of 1) “VIC” – Video Image Calculator and 2) “SAM” – Screen Assessment Matrix, as follows: – “VIC” – Video Image Calculator Additionally, the system is provided with a field of view assessment tool to support the commissioning process, for engineers and auditors to translate an Operational Requirement into a usable image. The CCTV Video Image Calculator (VIC) & Screen Assessment Matrix (SAM) is a developed solution able to identify effective pixel densities not simply at the time of image capture, but following storage and recovery of compressed files. The new CCTV Video Image Calculator (VIC) & Screen Assessment Matrix (SAM) has been designed within the requirements of IEC 62676-4, to provide the tools necessary for measuring the image quality of CCTV systems, camera setup, commissioning and auditing of CCTV fields of views, which provides for quantified, consistent and repeatable resu lts. However, while the Rotakin test is effectively now redundant, the original concept of a standard target of known size against which images could be measured remains central to modern video analysis methods.
Rotakin, while still available today, has been replaced by better targets, and 50132 has been replaced by IEC 62676, which states that test targets must allow the measurement of both colour and pixel density.
#EFFECTIVE RESOLUTION CALCULATOR ISO#
However, CCTV at the time was based on black and white analogue technology and, as the security industry transitioned to colour images in digital formats, Rotakin and ISO 50132 became obsolete.
ISO 50132 defines the quality of CCTV images according to the percentage of the screen occupied by the standard Rotakin target. Use of the target was included in the British Standard 50132, and this then evolved into a European, and eventually a global, ISO Standard.