Re: Calculation of snr

On 22 Mai, 12:36, ransley <Mark_Rans...@xxxxxxxxx> wrote:
On May 22, 5:28 am, Marc Wossner <marc.woss...@xxxxxxx> wrote:

Hi ng,

I´d like to know about the signal to noise ratio of my digital camera.
According to a website I found this value is the ratio of total signal
to total noise expressed in decibels (dB) and can be calculated with
the following formula:

SNR = 20 log (Signal RMS / Noise RMS)

As math was always a horror for me, I have only a slight idea of "root
mean square" but don´t know how to deduce those values from simple
digital images. Can someone please help me with that?

Best Regards!
Marc Wossner

db is sound not what your eve sees, what is "this wedsite" for you id
say tb, trollbell

Yes, but "db" is also quite often used in electronic context as well
so I thought id would be correct.
If it isn`t, can you tell me the right way?

Best regards!
Marc Wossner
.

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