SNR Signal to Noise Ratio
SNR Signal to Noise Ratio is the ratio between a useful video signal and unwanted noise. The higher the SNR the better the picture and the lower the amount of interfering image noise.
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| SNR dB | SNR:1 | Picture Quality |
|---|---|---|
| 60dB | 1,000 | Excellent, no noise apparent |
| 50dB | 316 | Good, a small amount of noise but picture quality good |
| 40dB | 100 | Reasonable, fine grain or snow in the picture, some fine detail lost |
| 30dB | 32 | Poor picture with a great deal of noise |
| 20dB | 10 | Unusable picture |
Again the higher the dB number the better the picture. Meaning it has less noise. Noise can be manifest in graininess, streaks, etc. WDR cameras are at least 95dB typical and up to 120dB maximum. This is found in cameras powered by Pixim's digital image sensor.
Click here to learn more about Pixim Digital Technology
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