1 | // created: 2013/06/27
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2 | // filename: MeanFilter.h
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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 | #ifndef MEANFILTER_H
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15 | #define MEANFILTER_H
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16 |
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17 | // we fix the max number of elements to compute the mean
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18 | // this is a simple example, it should be dynamical
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19 | #define MAX_NUMBER_OF_ELEMENTS 200
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20 |
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21 | // necessary include, as IODevice is a base of our class
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22 | #include <IODevice.h>
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23 |
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24 | // forward declaration for other classes
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25 | namespace flair {
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26 | namespace core {
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27 | class cvmatrix;
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28 | }
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29 | namespace gui {
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30 | class LayoutPosition;
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31 | class GroupBox;
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32 | class SpinBox;
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33 | }
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34 | }
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35 |
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36 | // MeanFilter is a class computing a mean
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37 | // based on a parametrizable number of elements
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38 | // it derives on IODevice as it as an input and an output
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39 | // it is a filter, we extend the namespace
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40 | namespace flair {
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41 | namespace filter {
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42 | class MeanFilter : public core::IODevice {
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43 |
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44 | public:
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45 | /*!
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46 | * \brief Constructor
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47 | *
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48 | * Builds a mean filter. \n
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49 | * After calling this function, position will be deleted as it is no longer
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50 | *usefull. \n
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51 | *
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52 | * \param parent IODevice to use as parent
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53 | * \param position where to place settings
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54 | * \param name name of the object
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55 | */
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56 | MeanFilter(const core::IODevice *parent, const gui::LayoutPosition *position,
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57 | std::string name);
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58 |
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59 | /*!
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60 | * \brief Destructor
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61 | */
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62 | ~MeanFilter();
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63 |
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64 | /*!
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65 | * \brief Output matrix
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66 | *
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67 | * allows to access output matrix, to get signal value or to put it in a graph.
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68 | *\n
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69 | *
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70 | * \return pointer to the output matrix
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71 | */
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72 | core::cvmatrix *GetMatrix(void) const;
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73 |
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74 | /*!
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75 | * \brief Value
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76 | *
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77 | * this method is equivalent to GetMatrix()->Value(0,0)
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78 | *
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79 | * \return actual mean value
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80 | */
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81 | float GetValue(void) const;
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82 |
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83 | private:
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84 | // UpdateFrom method from base class IODevice
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85 | void UpdateFrom(const core::io_data *data);
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86 | gui::GroupBox *groupBox;
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87 | gui::SpinBox *numberOfElements;
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88 | core::cvmatrix *output;
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89 | float previousValues[MAX_NUMBER_OF_ELEMENTS]; // previous values storage
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90 | };
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91 | } // end namespace filter
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92 | } // end namespace flair
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93 | #endif // MEANFILTER_H
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