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Unibrain Fire-i 501/511/601/701/702/810 Operation Manual Page 62
4.12. One Pixel ‘Snow Noise’ removal
With this function, it is possible to average the value of snow noise pixel by using the neighboring pixels values. The
formula used is: If ((Pi-Pi-1) > Threshold*16) and ((Pi-Pi+1) > (Threshold*16)), Pi is bad pixel. The purpose of the
function is to increase the average pixels values for the whole image and be automatically displayed and the images
can be compensated by over up to 50%. The register address and values for this function are:
Address Description (bit 0: msb) Read/Write
0xF2F20150
One Pixel Snow Noise Remove
Bit 0 : presence inquiry (read only)
Bit 1 ~ Bit 5 : reserved
Bit 6 : on/off
Bit 7~Bit23 : reserved
Bit 24~Bit31 : Threshold Value (T) :
If Pixel difference value > Threshold Value, then replace near pixel average
Value
Write only
Before Snow noise image
After Snow noise removal