| [14] | 1 | // created: 2013/06/27
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| 2 | // filename: MeanFilter.cpp
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| 3 | //
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| 4 | // author: Guillaume Sanahuja
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| 5 | // Copyright Heudiasyc UMR UTC/CNRS 7253
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| 6 | //
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| 7 | // version: $Id: $
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| 8 | //
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| 9 | // purpose: object computing a mean filter
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| 10 | //
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| 11 | //
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| 12 | /*********************************************************************/
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| 13 |
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| 14 | #include "MeanFilter.h"
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| 15 | #include <cvmatrix.h>
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| 16 | #include <LayoutPosition.h>
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| 17 | #include <GroupBox.h>
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| 18 | #include <SpinBox.h>
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| 19 |
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| 20 | using namespace std;
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| 21 | using namespace flair::core;
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| 22 | using namespace flair::gui;
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| 23 |
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| [16] | 24 | namespace flair {
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| 25 | namespace filter {
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| [14] | 26 |
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| [16] | 27 | MeanFilter::MeanFilter(const IODevice *parent, const LayoutPosition *position,
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| 28 | string name)
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| 29 | : IODevice(parent, name) {
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| 30 | // interface initialisation
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| 31 | groupBox = new GroupBox(position, name);
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| 32 | numberOfElements = new SpinBox(groupBox->NewRow(), "numberOfElements:", 1,
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| 33 | MAX_NUMBER_OF_ELEMENTS,
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| 34 | 1); // saturated to MAX_NUMBER_OF_ELEMENTS
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| [14] | 35 |
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| [16] | 36 | // init storage
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| 37 | for (int i = 0; i < MAX_NUMBER_OF_ELEMENTS; i++)
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| 38 | previousValues[i] = 0;
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| [14] | 39 |
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| [16] | 40 | // 1*1 output matrix
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| 41 | cvmatrix_descriptor *desc = new cvmatrix_descriptor(1, 1);
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| 42 | desc->SetElementName(0, 0,
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| 43 | "mean filter"); // name will be used for graphs and logs
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| 44 | output = new cvmatrix(this, desc, floatType, name);
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| [14] | 45 |
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| [16] | 46 | AddDataToLog(output);
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| [14] | 47 | }
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| 48 |
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| [16] | 49 | MeanFilter::~MeanFilter() {}
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| [14] | 50 |
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| [16] | 51 | cvmatrix *MeanFilter::GetMatrix() const { return output; }
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| [14] | 52 |
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| [16] | 53 | float MeanFilter::GetValue(void) const { return output->Value(0, 0); }
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| [14] | 54 |
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| [16] | 55 | // UpdateFrom, where we implement the filter
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| 56 | // this method is automatically called when the parent IODevice calls
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| 57 | // ProcessUpdate
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| 58 | // in our case it is the sinus or the 1st orde law pass filter
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| [14] | 59 | //(see in Sinus::Run the call to ProcessUpdate)
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| 60 | void MeanFilter::UpdateFrom(const io_data *data) {
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| 61 |
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| [16] | 62 | float result = 0;
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| 63 | // get input argument in a cvmatrix
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| 64 | cvmatrix *input = (cvmatrix *)data;
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| [14] | 65 |
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| [16] | 66 | // simple (and not efficent!) implementation of the filter
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| 67 | previousValues[numberOfElements->Value() - 1] = input->Value(0, 0);
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| 68 | for (int i = 0; i < numberOfElements->Value(); i++)
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| 69 | result += previousValues[i];
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| 70 | for (int i = 1; i < numberOfElements->Value(); i++)
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| 71 | previousValues[i - 1] = previousValues[i];
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| [14] | 72 |
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| [16] | 73 | // put the result in output matrix
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| 74 | output->SetValue(0, 0, result / numberOfElements->Value());
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| 75 | // put corresponding time
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| 76 | output->SetDataTime(data->DataTime());
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| [14] | 77 |
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| [16] | 78 | // ProcessUpdate is very important
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| 79 | // we must call it after updating the output matrix
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| 80 | // it allows:
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| 81 | // -to save value in the logs
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| 82 | // -to automatically call the next filter UpdateFrom method
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| 83 | ProcessUpdate(output);
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| [14] | 84 | }
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| [16] | 85 | } // end namespace filter
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| 86 | } // end namespace flair
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