How to enable dotcode mode for best performance

Since Python is typically used for processing static images rather than live camera streams, setting a region of interest is unnecessary. This differs from other platforms where live image processing might benefit from such a feature.

So, in this case we will only set the desired symbology and the decoding speed to "slow". 

                Dotcode = BarkoderSDK.constants["Decoders"]["Dotcode"];

#set Dotcode decoder only
BarkoderSDK.setEnabledDecoders([Dotcode], 1);

decodingSpeed = BarkoderSDK.constants["DecodingSpeed"]["Slow"];
BarkoderSDK.setDecodingSpeed(decodingSpeed);