maix.tracker

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maix.tracker module

You can use maix.tracker to access this module with MaixPy
This module is generated from MaixPy and MaixCDK

Module

No module

Enum

Variable

Function

Class

Object

tracker.Object class

C++ defination code:
class Object

init

def __init__(self, x: int, y: int, w: int, h: int, class_id: int, score: float) -> None

tracker.Object class constructor

item	description
type	func
static	False

C++ defination code:

Object(const int &x, const int &y, const int &w, const int &h, const int &class_id, const float &score)

x

position x attribute.

item	description
type	var
static	False
readonly	False

C++ defination code:
int x

y

position y attribute.

item	description
type	var
static	False
readonly	False

C++ defination code:
int y

w

position rectangle width.

item	description
type	var
static	False
readonly	False

C++ defination code:
int w

h

position rectangle height.

item	description
type	var
static	False
readonly	False

C++ defination code:
int h

class_id

object class id, int type.

item	description
type	var
static	False
readonly	False

C++ defination code:
int class_id

score

object score(prob).

item	description
type	var
static	False
readonly	False

C++ defination code:
float score

Track

tracker.Track class

C++ defination code:
class Track

init

def __init__(self, id: int, score: float, lost: bool, start_frame_id: int, frame_id: int) -> None

tracker.Track class constructor

item	description
type	func
static	False

C++ defination code:

Track(const size_t &id, const float &score, const bool &lost, const size_t &start_frame_id, const size_t &frame_id)

id

track id.

item	description
type	var
static	False
readonly	False

C++ defination code:
size_t id

score

track score(prob).

item	description
type	var
static	False
readonly	False

C++ defination code:
float score

lost

whether this track lost.

item	description
type	var
static	False
readonly	False

C++ defination code:
bool lost

start_frame_id

track start frame id.

item	description
type	var
static	False
readonly	False

C++ defination code:
size_t start_frame_id

frame_id

track current frame id.

item	description
type	var
static	False
readonly	False

C++ defination code:
size_t frame_id

history

track position history, the last one is latest position.

item	description
type	var
static	False
readonly	False

C++ defination code:
std::deque<tracker::Object> history

ByteTracker

tracker.ByteTracker class

C++ defination code:
class ByteTracker

init

def __init__(self, max_lost_buff_num: int = 60, track_thresh: float = 0.5, high_thresh: float = 0.6, match_thresh: float = 0.8, max_history: int = 20) -> None

tracker.ByteTracker class constructor

item	description
type	func
param	max_lost_buff_num: the frames for keep lost tracks. track_thresh: tracking confidence threshold. high_thresh: threshold to add to new track. match_thresh: matching threshold for tracking, e.g. one object in two frame iou < match_thresh we think they are the same obj. max_history: max tack's position history length.
static	False

C++ defination code:

ByteTracker(const int &max_lost_buff_num = 60,
                    const float &track_thresh = 0.5,
                    const float &high_thresh = 0.6,
                    const float &match_thresh = 0.8,
                    const int &max_history = 20)

update

def update(self, objs: list[Object]) -> list[Track]

update tracks according to current detected objects.

item	description
type	func
static	False

C++ defination code:

std::vector<tracker::Track> update(const std::vector<tracker::Object> &objs)

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