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| template<typename T> |
| CounterType | insert (const Event_< T > &e) |
| | Insert an event, incrementing (p=true) or decrementing (p=false) the counter at (e.x, e.y).
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| template<typename T> |
| CounterType | emplace (const T x, const T y, const bool p) |
| | Increment or decrement the counter at (x, y) without constructing an Event_.
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| void | updateStats (const Event &e) |
| | Account for an event in the statistics reported by count() and duration().
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| std::size_t | count () const |
| | Number of events accounted for by updateStats().
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| TimeType | firstTimestamp () const |
| | Timestamp of the first event accounted for by updateStats().
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| TimeType | lastTimestamp () const |
| | Timestamp of the last event accounted for by updateStats().
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void | resetStats () |
| | Reset statistics.
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void | clear () |
| | Reset all pixels.
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| ResultType | duration () const |
| | Time difference between the last and the first event.
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| ResultType | rate () const |
| | Compute event rate as the ratio between the number of events and the time difference between the last and the first event.
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| ResultType | density (const cv::Size size) const |
| | Compute event density as the ratio between the number of events and the number of pixels.
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| std::size_t | activePixels () const |
| | Count the pixels with at least one event.
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| ResultType | fillRatio (const cv::Size size) const |
| | Compute fill ratio as the fraction of pixels with at least one event.
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| ResultType | polarityRatio (const PolarityType p) const |
| | Compute polarity ratio as the fraction of events with the given polarity.
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| Event_< ResultType > | mean () const |
| | Compute the mean of the events.
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| cv::Point_< ResultType > | meanPoint () const |
| | Compute the mean x,y point of the events.
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| cv::Matx< ResultType, 2, 2 > | covariance () const |
| | Compute the covariance of the x,y coordinates of the events around meanPoint().
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| cv::Rect | boundingBox () const |
| | Compute the smallest rectangle of pixels containing the events.
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| ResultType | meanTime () const |
| | Compute the mean time of the events.
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| ResultType | midTime () const |
| | Calculate the midpoint time between the oldest and the newest event.
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| std::size_t | peak () const |
| | Find the largest number of events on a single pixel.
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| ResultType | entropy () const |
| | Compute the Shannon entropy of the spatial distribution of the events.
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Spatial map accumulating signed event counts per pixel.
Each positive-polarity event increments the pixel counter by +1; each negative-polarity event decrements it by -1. Counters are stored as CounterType (int16_t by default).
1.17.0