# 目标检测

Source: [https://docs.qualcomm.com/doc/80-70015-15BY/topic/object-detection.html](https://docs.qualcomm.com/doc/80-70015-15BY/topic/object-detection.html)

在对模型执行 pipeline 命令之前，请确保遵循所需的 [先决条件](https://docs.qualcomm.com/doc/80-70015-15BY/topic/ai-hub-imsdk.html#ai_hub_imsdk__aihub-imsdk-prereq)

## Yolo-V7 Quantized

    gst-launch-1.0 -e --gst-debug=2 \
    filesrc location=/opt/video.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! queue ! tee name=split \
    split. ! queue ! qtivcomposer name=mixer ! queue ! waylandsink fullscreen=true \
    split. ! queue ! qtimlvconverter ! queue ! qtimltflite delegate=external external-delegate-path=libQnnTFLiteDelegate.so \
    external-delegate-options="QNNExternalDelegate,backend_type=htp;" model=/opt/Yolo-v7-Quantized.tflite ! queue ! \
    qtimlvdetection threshold=50.0 results=10 module=yolov8 labels=/opt/coco_labels.txt constants="YOLOv7,q-offsets=<35.0, 0.0, 0.0>,q-scales=<3.4220554, 0.0023370725102722645, 1.0>;" ! \
    video/x-raw,format=BGRA,width=640,height=360 ! queue ! mixer.Copy to clipboard

## Yolov8-Detection-Quantized

    gst-launch-1.0 -e --gst-debug=2 \
    filesrc location=/opt/video.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! queue ! tee name=split \
    split. ! queue ! qtivcomposer name=mixer ! queue ! waylandsink fullscreen=true \
    split. ! queue ! qtimlvconverter ! queue ! qtimltflite delegate=external external-delegate-path=libQnnTFLiteDelegate.so \
    external-delegate-options="QNNExternalDelegate,backend_type=htp,htp_device_id=(string)0,htp_performance_mode=(string)2,htp_precision=(string)1;" model=/opt/YOLOv8-Detection-Quantized.tflite ! queue ! \
    qtimlvdetection threshold=50.0 results=10 module=yolov8 labels=/opt/coco_labels.txt constants="YOLOv8,q-offsets=<21.0, 0.0, 0.0>,q-scales=<3.093529462814331, 0.00390625, 1.0>;" ! \
    video/x-raw,format=BGRA,width=640,height=360 ! queue ! mixer.Copy to clipboard

## Yolo-nas-Quantized

    gst-launch-1.0 -e --gst-debug=2 \
    filesrc location=/opt/video.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! queue ! tee name=split \
    split. ! queue ! qtivcomposer name=mixer ! queue ! waylandsink fullscreen=true \
    split. ! queue ! qtimlvconverter ! queue ! qtimltflite delegate=external external-delegate-path=libQnnTFLiteDelegate.so \
    external-delegate-options="QNNExternalDelegate,backend_type=htp;" model=/opt/Yolo-NAS-Quantized.tflite ! queue ! \
    qtimlvdetection threshold=50.0 results=10 module=yolov8 labels=/opt/coco_labels.txt constants="yolo-nas,q-offsets=<37.0,0.0, 0.0>,q-scales=<3.416602611541748, 0.00390625, 1.0>;" ! \
    video/x-raw,format=BGRA,width=640,height=360 ! queue ! mixer.Copy to clipboard

Last Published: Jan 26, 2026

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