=====QRSS - stack frames=====
{{::screenshot_from_2023-01-26_06-15-31.png?nolink |}}

==== Create average image ====
<code>convert 2023*.png -evaluate-sequence Mean Mean.png</code>

==== Try all options ====
<code>convert -list evaluate
Abs
Add
AddModulus
And
Cos
Cosine
Divide
Exp
Exponential
GaussianNoise
ImpulseNoise
InverseLog
LaplacianNoise
LeftShift
Log
Max
Mean
Median
Min
MultiplicativeNoise
Multiply
Or
PoissonNoise
Pow
RightShift
RMS
RootMeanSquare
Set
Sin
Sine
Subtract
Sum
Threshold
ThresholdBlack
ThresholdWhite
UniformNoise
Xor</code>

<code>

$ convert -list evaluate | grep -Ev "LeftShift|RightShift" | while read line
> do
> echo $line; convert 2023*.png -evaluate-sequence $line $line.png
> done
</code>

{{tag>[qrss average image spectrogram]}}