The main challenge to developing an all purpose 5MP or 8MP Ultra HD Megapixel Network Camera is maintaining the ultra high picture quality at night as well as during the day.

TruHD has successfully developed a technology called NightColour, which combines a proprietary, guided variable DWDR algorithm called Contrast Balancing Technology (CBT) and a guided variable 3DNR noise removal system called Temporal Noise Recognition Technology to achieve clear, sharp, high detailed and noise free colour night vision in full Ultra HD megapixel glory. The key enablers of these techniques are:

a. the low crosstalk output of the BSI Ultra HD 5M/8M sensors used in our cameras – which minimizes the smearing of noise pixels to adjacent detail pixels – a major problem in FSI CMOS and CCD sensors that prevent intelligent noise removal algorithms from working,

b. The ARM Cortex A9 cores inside the new T7 chips in each camera – which runs our guiding algorithms to control which area and to what level the DWDR and 3DNR image signal processing is done, and finally

c. the twin core DSP/ISPs built into the T7 chips – which apply the sequence of image processing steps 60 times per second in realtime to product the wonderfully clear NightColour images.

All cameras, but especially surveillance cameras, need to capture high quality HD images at night. However, until now, overall darkness and noise plague image in almost all current 5MP+ megapixel cameras. These traditional, outdated cameras employ dumb kernel filters in a process know as 2DNR to try and hide the noise – but not only does this not solve the lack of brightness – it also makes the already dark picture blurry and useless.

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