03-Hybrid_vision_toolkit API (C++)

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hv_evt2_codec.h

evt2::EVT2Header

EVT2 format file header structure.

struct EVT2Header {
    std::string format_line;    // Format line
    std::string integrator;     // Integrator name
    std::string date;           // Creation date
    uint32_t width;             // Sensor width
    uint32_t height;            // Sensor height
    uint64_t start_timestamp;   // Start timestamp (microseconds)
};

evt2::EventCDEncoder

CD event encoder, encodes EventCD events into EVT2 raw format.

class EventCDEncoder {
public:
    void setEvent(unsigned short x, unsigned short y, short polarity, Timestamp timestamp);
    void encode(RawEvent* raw_event);

    unsigned short x, y;
    short p;
    Timestamp t;
};

evt2::EventTriggerEncoder

External trigger event encoder.

class EventTriggerEncoder {
public:
    void setEvent(short polarity, short trigger_id, Timestamp timestamp);
    void encode(RawEvent* raw_event);

    short p, id;
    Timestamp t;
};

evt2::EventTimeEncoder

Time high bit encoder.

class EventTimeEncoder {
public:
    explicit EventTimeEncoder(Timestamp base);
    void encode(RawEvent* raw_event);
    Timestamp getNextTimeHigh() const;
    void reset(Timestamp base = 0);
};

evt2::EVT2Decoder

EVT2 format decoder.

class EVT2Decoder {
public:
    EVT2Decoder();
    size_t decode(const uint8_t* buffer, size_t buffer_size,
                  std::vector<Metavision::EventCD>& cd_events,
                  std::vector<std::tuple<short, short, Timestamp>>* trigger_events = nullptr);
    void reset();
    Timestamp getCurrentTimeBase() const;
};

Type Definition: using Timestamp = uint64_t;

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hv_camera.h

Class hv::HV_Camera

Used for event stream and image stream acquisition of event camera (DVS).

Inheritance Relationship

• No inheritance relationship, independent class

Function Description