Rotakin versus norman full#
The tests – based on a traditional analogue 4CIF image – assumed that all cameras had the same maximum resolution and displayed a full frame or field image. These measurements established the dimensions of critical details.
Rotakin versus norman tv#
These were 120 per cent for identification, delivering picture quality and detail sufficient to enable the identity of a subject to be established beyond reasonable doubt not less than 50 per cent for recognition, giving a high degree of certainty whether or not the individual is someone seen previously not less than 10 per cent for detection, giving a high degree of certainty a person is visible within an image, and not less than 5 per cent for monitoring, allowing a user to determine the number, direction and speed of movement of viewed individuals.Įlements of the original tests specified resolution in TV lines, which helped establish the required percentages as mentioned. Differing values were specified dependent upon the intended use of the video surveillance system. The original Rotakin guidelines were used to establish a required percentage of the screen that a target should fill. The test was used to assess whether or not individuals captured by video could be identified, and to determine how well users would be able to see camouflaged individuals in differing weather or lighting conditions. It’s goal was to ensure that cameras were theoretically capable of producing suitable images of intruders. The Rotakin test target was designed approximately a quarter of a century ago to evaluate the performance of CCTV systems. Benchmark considers the best approach, assisted by Steven Ryan of Axis Communications.
In today’s digital age, the target-based test presents challenges for installers and integrators. The Rotakin test was established over two decades ago, and was formulated in a time of analogue video.
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