#MBMOT

#安装与源码运行

moon add python123-ops/mbmot@0.3.0

moon fmt --check
moon check --target all --deny-warn
moon test --target all --deny-warn

let tracker = @mbmot.Tracker::new(@mbmot.TrackerConfig::default())
let box = @mbmot.BoundingBox::new(12.0, 20.0, 52.0, 80.0)
let detection = @mbmot.Detection::new(box, 0.91, 0)
let frame = tracker.update(1, [detection])

let track = frame.tracks()[0]
assert_eq(track.track_id(), 1)
assert_eq(track.hits(), 1)

moon run src/yolo_import --target native < examples/yolo.ndjson
moon run src/yolo_import --target native -- --classes '[2]' < examples/yolo.ndjson

moon run src/observe --target native -- examples/observe.rules.json < examples/observe.yolo.ndjson

moon run src/observe --target native -- examples/observe.rules.json --input xyxy < examples/observe.xyxy.ndjson

#逐帧契约

#从轨迹到空间事件

let analyzer = @analytics.SpatialAnalyzer::new(
  @analytics.AnalyticsConfig::default(),
  [
    @analytics.DirectedLine::new(
      4,
      @analytics.Point::new(320.0, 0.0),
      @analytics.Point::new(320.0, 720.0),
    ),
  ],
  [
    @analytics.PolygonRegion::new(
      7,
      [
        @analytics.Point::new(100.0, 100.0),
        @analytics.Point::new(540.0, 100.0),
        @analytics.Point::new(540.0, 620.0),
        @analytics.Point::new(100.0, 620.0),
      ],
    ),
  ],
)

let tracked = tracker.update(frame_id, detections)
let spatial = analyzer.update_mbmot(frame_id, tracked)
for event in spatial.events() {
  // LineCrossed / RegionEntered / RegionExited
  consume(event)
}

let selected_line = @analytics.DirectedLine::for_classes(
  12,
  @analytics.Point::new(320.0, 0.0),
  @analytics.Point::new(320.0, 720.0),
  [0, 2],
)

moon run src/analytics_demo --target native

{"config":{"anchor":"bottom_center","stable_frames":1},"lines":[{"id":4,"start":[5,0],"end":[5,10],"class_ids":[0]}],"regions":[{"id":7,"vertices":[[0,0],[10,0],[10,10],[0,10]],"class_ids":[0]}]}
{"frame":1,"tracks":[{"track_id":1,"xyxy":[-3,2,-1,5],"class_id":0}],"lost":[],"removed":[]}

moon run src/analytics_replay --target native < examples/analytics.ndjson

#录像演示

py -3 -m venv .venv-video-demo
.\.venv-video-demo\Scripts\python.exe -m pip install -r tools\video_demo\requirements.txt
.\.venv-video-demo\Scripts\python.exe tools\video_demo\video_demo.py `
  --source input.mp4 `
  --output input.mbmot.mp4 `
  --config examples\video-demo-config.json

.\.venv-video-demo\Scripts\python.exe tools\video_demo\video_demo.py `
  --source 0 `
  --max-frames 300 `
  --output camera.mbmot.mp4 `
  --config examples\video-demo-config.json

{"frame":1,"detections":[{"xyxy":[120,80,260,410],"score":0.91,"class_id":0}]}

#NDJSON 重放

{"frame":1,"detections":[{"xyxy":[0,0,10,10],"score":0.95,"class_id":0}]}

moon run src/replay --target native < examples/replay.ndjson

cmd /c "moon run src/replay --target native < examples\replay.ndjson"

{"frame":1,"tracks":[{"track_id":1,"xyxy":[0,0,10,10],"score":0.95,"class_id":0,"first_frame":1,"last_frame":1,"hits":1}],"lost":[],"removed":[]}

#MOT 序列评测

moon run src/evaluate --target native examples/mot/ground-truth.txt examples/mot/tracker-results.txt

moon run src/mot_track --target native --release \
  examples/mot/detections.txt tracks.txt

{"match_iou_threshold":0.5,"frames":3,"ground_truth_detections":3,"tracker_detections":4,"true_positives":3,"false_positives":1,"false_negatives":0,"identity_switches":1,"mota":0.3333333333333333,"motp":1,"id_true_positives":2,"id_false_positives":2,"id_false_negatives":1,"id_precision":0.5,"id_recall":0.6666666666666666,"idf1":0.5714285714285714}

moon run src/mot_batch --target native -- examples/mot/batch/manifest.json

#License