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The images above picture the result in Siril using the Auto-Stretch rendering mode. Note the improvement of the signal-to-noise ratio regarding the result given for one frame in the previous [[Siril:Tutorial_preprocessing|step]] (take a look to the sigma value). The increase in SNR is of <math> | The images above picture the result in Siril using the Auto-Stretch rendering mode. Note the improvement of the signal-to-noise ratio regarding the result given for one frame in the previous [[Siril:Tutorial_preprocessing|step]] (take a look to the sigma value). The increase in SNR is of <math>21/5.1 = 4.11 \approx \sqrt{12} = 3.46</math> and you should try to improve this result adjusting <math>\sigma_{low}</math> and <math>\sigma_{high}</math>. | ||
Latest revision as of 13:06, 5 September 2016
The images above picture the result in Siril using the Auto-Stretch rendering mode. Note the improvement of the signal-to-noise ratio regarding the result given for one frame in the previous step (take a look to the sigma value). The increase in SNR is of [math]\displaystyle{ 21/5.1 = 4.11 \approx \sqrt{12} = 3.46 }[/math] and you should try to improve this result adjusting [math]\displaystyle{ \sigma_{low} }[/math] and [math]\displaystyle{ \sigma_{high} }[/math].