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Filter an Image Using Butterworth Filters

Filter an Image Using Butterworth Filters

    
Wolfram Language code: img = [image];
Use a lowpass Butterworth filter:
Wolfram Language code: RecurrenceFilter[ToDiscreteTimeModel[ButterworthFilterModel[5], 1], img]
Use a highpass Butterworth filter:
Wolfram Language code: h = ButterworthFilterModel[{"Highpass", {0.5, 1}, {20, 1}}];
Wolfram Language code: RecurrenceFilter[ToDiscreteTimeModel[h, 1], img]