6. Edge AI dataflows¶
The reference edgeai application at a high level can be split into 3 parts,
Input pipeline - Grabs a frame from camera, video, image or RTSP source
Compute pipeline - Performs pre-processing, inference and post-processing
Output pipeline - Sends the output to display , file or stream over network
Here are the some sample data flows for reference application and the corresponding GStreamer launch strings that is generated. User can interact with the application via the Configuring applications
6.1. OpTIFlow¶
6.1.1. Image Classification¶
Input: USB Camera
DL Task: Classification
Output: Display
A frame is grabbed from an input source and split into two paths. The “analytics” path resizes the input maintaining the aspect ratio and crops the input to match the resolution required to run the deep learning network. The “visualization” path is provided to the post-processing plugin which overlays the detected classes. Post-processed output is given to HW mosaic plugin which positions and resizes the output window on an empty background before sending to display.
GStreamer pipeline:
v4l2src device=/dev/video-usb-cam0 io-mode=2 ! image/jpeg, width=1280, height=720 ! jpegdec ! tiovxdlcolorconvert ! video/x-raw, format=NV12 ! \
tiovxmultiscaler name=split_01 src_0::roi-startx=80 src_0::roi-starty=45 src_0::roi-width=1120 src_0::roi-height=630 target=0 \
\
split_01. ! queue ! video/x-raw, width=280, height=224 ! tiovxmultiscaler target=1 ! video/x-raw, width=224, height=224 ! \
tiovxdlpreproc model=/opt/model_zoo/TFL-CL-0000-mobileNetV1-mlperf out-pool-size=4 ! application/x-tensor-tiovx ! \
tidlinferer target=1 model=/opt/model_zoo/TFL-CL-0000-mobileNetV1-mlperf ! post_0.tensor \
\
split_01. ! queue ! video/x-raw, width=1280, height=720 ! post_0.sink \
\
tidlpostproc name=post_0 model=/opt/model_zoo/TFL-CL-0000-mobileNetV1-mlperf alpha=0.4 viz-threshold=0.5 top-N=5 display-model=true ! queue ! mosaic_0. \
\
tiovxmosaic name=mosaic_0 target=1 src::pool-size=4 sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<1280>" sink_0::heights="<720>" ! \
video/x-raw, format=NV12, width=1920, height=1080 ! queue ! tiperfoverlay title="Image Classification" overlay-type=graph ! kmssink driver-name=tidss sync=true
Fig. 6.1 OpTIFlow pipeline for image classification demo with USB camera and display¶
6.1.2. Object Detection¶
Input: IMX219 Camera
DL Task: Detection
Output: File
A frame is grabbed from an input source and split into two paths. The “analytics” path resizes the input to match the resolution required to run the deep learning network. The “visualization” path is provided to the post-processing plugin which overlays rectangles around detected objects. Post-processed output is given to HW mosaic plugin which positions and resizes the output window on an empty background before sending to encode and save as file.
GStreamer pipeline:
v4l2src device=/dev/video-imx219-cam0 io-mode=5 ! queue leaky=2 ! video/x-bayer, width=1920, height=1080, format=rggb ! \
tiovxisp sensor-name=SENSOR_SONY_IMX219_RPI dcc-isp-file=/opt/imaging/imx219/linear/dcc_viss.bin format-msb=7 sink_0::dcc-2a-file=/opt/imaging/imx219/linear/dcc_2a.bin sink_0::device=/dev/v4l-imx219-subdev0 ! video/x-raw, format=NV12 ! \
tiovxmultiscaler name=split_01 src_0::roi-startx=0 src_0::roi-starty=0 src_0::roi-width=1920 src_0::roi-height=1080 target=0 \
\
split_01. ! queue ! video/x-raw, width=480, height=416 ! tiovxmultiscaler target=1 ! video/x-raw, width=416, height=416 ! \
tiovxdlpreproc model=/opt/model_zoo/ONR-OD-8200-yolox-nano-lite-mmdet-coco-416x416 out-pool-size=4 ! application/x-tensor-tiovx ! \
tidlinferer target=1 model=/opt/model_zoo/ONR-OD-8200-yolox-nano-lite-mmdet-coco-416x416 ! post_0.tensor \
\
split_01. ! queue ! video/x-raw, width=1280, height=720 ! post_0.sink \
\
tidlpostproc name=post_0 model=/opt/model_zoo/ONR-OD-8200-yolox-nano-lite-mmdet-coco-416x416 alpha=0.4 viz-threshold=0.6 top-N=5 display-model=true ! queue ! mosaic_0. \
\
tiovxmosaic name=mosaic_0 target=1 src::pool-size=4 sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<1280>" sink_0::heights="<720>" ! \
video/x-raw,format=NV12, width=1920, height=1080 ! v4l2h264enc extra-controls="controls, frame_level_rate_control_enable=1, video_bitrate=10000000, video_gop_size=30" ! \
h264parse ! matroskamux ! filesink location=/opt/edgeai-test-data/output/output_video.mkv
Fig. 6.2 OpTIFlow pipeline for object detection demo with IMX219 camera and save to file¶
6.1.3. Semantic Segmentation¶
Input: H264 Video
DL Task: Segmentation
Output: Remote streaming
A frame is grabbed from an input source and split into two paths. The “analytics” path resize the input to match the resolution required to run the deep learning network. The “visualization” path is provided to the post-processing plugin which blends each segmented pixel to a color map. Post-processed output is given to HW mosaic plugin which positions and resizes the output window on an empty background before sending to encode and stream.
GStreamer pipeline:
multifilesrc location=/opt/edgeai-test-data/videos/video0_1280_768.h264 loop=true stop-index=-1 caps=video/x-h264,width=1280,height=768,framerate=30/1 ! \
h264parse ! v4l2h264dec capture-io-mode=5 ! tiovxmemalloc pool-size=12 ! video/x-raw, format=NV12 ! \
tiovxmultiscaler name=split_01 src_0::roi-startx=0 src_0::roi-starty=0 src_0::roi-width=1280 src_0::roi-height=768 target=0 \
\
split_01. ! queue ! video/x-raw, width=512, height=512 ! tiovxdlpreproc model=/opt/model_zoo/TFL-SS-2580-deeplabv3_mobv2-ade20k32-mlperf-512x512 out-pool-size=4 ! application/x-tensor-tiovx ! \
tidlinferer target=1 model=/opt/model_zoo/TFL-SS-2580-deeplabv3_mobv2-ade20k32-mlperf-512x512 ! post_0.tensor \
\
split_01. ! queue ! video/x-raw, width=1280, height=720 ! post_0.sink \
\
tidlpostproc name=post_0 model=/opt/model_zoo/TFL-SS-2580-deeplabv3_mobv2-ade20k32-mlperf-512x512 alpha=0.4 viz-threshold=0.5 top-N=5 display-model=true ! queue ! mosaic_0. \
\
tiovxmosaic name=mosaic_0 target=1 src::pool-size=4 sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<1280>" sink_0::heights="<720>" ! \
video/x-raw,format=NV12, width=1920, height=1080 ! queue ! tiperfoverlay title="Semantic Segmentation" overlay-type=graph ! \
jpegenc ! multipartmux boundary=spionisto ! rndbuffersize max=65000 ! udpsink host=127.0.0.1 port=8081 sync=false
Fig. 6.3 OpTIFlow pipeline for semantic segmentation demo with file input and remote streaming¶
6.1.4. Single Input Multi Inference¶
Input: H264 Video
DL Task: Detection, Detection, Classification, Segmentation
Output: Display
GStreamer pipeline:
multifilesrc location=/opt/edgeai-test-data/videos/video0_1280_768.h264 loop=true stop-index=-1 caps=video/x-h264,width=1280,height=768,framerate=30/1 ! h264parse ! v4l2h264dec capture-io-mode=5 ! tiovxmemalloc pool-size=12 ! video/x-raw, format=NV12 ! \
tee name=tee_split0 \
tee_split0. ! queue ! tiovxmultiscaler name=split_01 src_0::roi-startx=0 src_0::roi-starty=0 src_0::roi-width=1280 src_0::roi-height=768 src_2::roi-startx=0 src_2::roi-starty=0 src_2::roi-width=1280 src_2::roi-height=768 target=0 \
tee_split0. ! queue ! tiovxmultiscaler name=split_02 src_0::roi-startx=80 src_0::roi-starty=48 src_0::roi-width=1120 src_0::roi-height=672 src_2::roi-startx=0 src_2::roi-starty=0 src_2::roi-width=1280 src_2::roi-height=768 target=0 \
\
split_01. ! queue ! video/x-raw, width=320, height=320 ! tiovxdlpreproc model=/opt/model_zoo/TFL-OD-2020-ssdLite-mobDet-DSP-coco-320x320 out-pool-size=4 ! application/x-tensor-tiovx ! tidlinferer target=1 model=/opt/model_zoo/TFL-OD-2020-ssdLite-mobDet-DSP-coco-320x320 ! post_0.tensor \
split_01. ! queue ! video/x-raw, width=640, height=360 ! post_0.sink \
tidlpostproc name=post_0 model=/opt/model_zoo/TFL-OD-2020-ssdLite-mobDet-DSP-coco-320x320 alpha=0.400000 viz-threshold=0.600000 top-N=5 display-model=true ! queue ! mosaic_0. \
\
split_01. ! queue ! video/x-raw, width=416, height=416 ! tiovxdlpreproc model=/opt/model_zoo/ONR-OD-8200-yolox-nano-lite-mmdet-coco-416x416 out-pool-size=4 ! application/x-tensor-tiovx ! tidlinferer target=1 model=/opt/model_zoo/ONR-OD-8200-yolox-nano-lite-mmdet-coco-416x416 ! post_1.tensor \
split_01. ! queue ! video/x-raw, width=640, height=360 ! post_1.sink \
tidlpostproc name=post_1 model=/opt/model_zoo/ONR-OD-8200-yolox-nano-lite-mmdet-coco-416x416 alpha=0.400000 viz-threshold=0.600000 top-N=5 display-model=true ! queue ! mosaic_0. \
\
split_02. ! queue ! video/x-raw, width=280, height=224 ! tiovxmultiscaler target=1 ! video/x-raw, width=224, height=224 ! tiovxdlpreproc model=/opt/model_zoo/ONR-CL-6360-regNetx-200mf out-pool-size=4 ! application/x-tensor-tiovx ! tidlinferer target=1 model=/opt/model_zoo/ONR-CL-6360-regNetx-200mf ! post_2.tensor \
split_02. ! queue ! video/x-raw, width=640, height=360 ! post_2.sink \
tidlpostproc name=post_2 model=/opt/model_zoo/ONR-CL-6360-regNetx-200mf alpha=0.400000 viz-threshold=0.500000 top-N=5 display-model=true ! queue ! mosaic_0. \
\
split_02. ! queue ! video/x-raw, width=512, height=512 ! tiovxdlpreproc model=/opt/model_zoo/ONR-SS-8610-deeplabv3lite-mobv2-ade20k32-512x512 out-pool-size=4 ! application/x-tensor-tiovx ! tidlinferer target=1 model=/opt/model_zoo/ONR-SS-8610-deeplabv3lite-mobv2-ade20k32-512x512 ! post_3.tensor \
split_02. ! queue ! video/x-raw, width=640, height=360 ! post_3.sink \
tidlpostproc name=post_3 model=/opt/model_zoo/ONR-SS-8610-deeplabv3lite-mobv2-ade20k32-512x512 alpha=0.400000 viz-threshold=0.500000 top-N=5 display-model=true ! queue ! mosaic_0. \
\
\
tiovxmosaic name=mosaic_0 target=1 src::pool-size=4 \
sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<640>" sink_0::heights="<360>" \
sink_1::startx="<960>" sink_1::starty="<150>" sink_1::widths="<640>" sink_1::heights="<360>" \
sink_2::startx="<320>" sink_2::starty="<530>" sink_2::widths="<640>" sink_2::heights="<360>" \
sink_3::startx="<960>" sink_3::starty="<530>" sink_3::widths="<640>" sink_3::heights="<360>" \
! video/x-raw,format=NV12, width=1920, height=1080 ! queue ! tiperfoverlay title="Single Input, Multi Inference" overlay-type=graph ! kmssink driver-name=tidss sync=false
Fig. 6.4 OpTIFlow pipeline for single input multi inference¶
6.1.5. Multi Input Multi Inference¶
Input: USB Camera, H264 Video
DL Task: Detection, Detection, Classification, Segmentation
Output: Display
GStreamer pipeline:
v4l2src device=/dev/video-usb-cam0 io-mode=2 ! image/jpeg, width=1280, height=720 ! jpegdec ! tiovxdlcolorconvert ! video/x-raw, format=NV12 ! \
tiovxmultiscaler name=split_01 src_0::roi-startx=0 src_0::roi-starty=0 src_0::roi-width=1280 src_0::roi-height=720 src_2::roi-startx=0 src_2::roi-starty=0 src_2::roi-width=1280 src_2::roi-height=720 target=0 \
\
split_01. ! queue ! video/x-raw, width=320, height=320 ! tiovxdlpreproc model=/opt/model_zoo/TFL-OD-2020-ssdLite-mobDet-DSP-coco-320x320 out-pool-size=4 ! application/x-tensor-tiovx ! tidlinferer target=1 model=/opt/model_zoo/TFL-OD-2020-ssdLite-mobDet-DSP-coco-320x320 ! post_0.tensor \
split_01. ! queue ! video/x-raw, width=640, height=360 ! post_0.sink \
tidlpostproc name=post_0 model=/opt/model_zoo/TFL-OD-2020-ssdLite-mobDet-DSP-coco-320x320 alpha=0.400000 viz-threshold=0.600000 top-N=5 display-model=true ! queue ! mosaic_0. \
\
split_01. ! queue ! video/x-raw, width=416, height=416 ! tiovxdlpreproc model=/opt/model_zoo/ONR-OD-8200-yolox-nano-lite-mmdet-coco-416x416 out-pool-size=4 ! application/x-tensor-tiovx ! tidlinferer target=1 model=/opt/model_zoo/ONR-OD-8200-yolox-nano-lite-mmdet-coco-416x416 ! post_1.tensor \
split_01. ! queue ! video/x-raw, width=640, height=360 ! post_1.sink \
tidlpostproc name=post_1 model=/opt/model_zoo/ONR-OD-8200-yolox-nano-lite-mmdet-coco-416x416 alpha=0.400000 viz-threshold=0.600000 top-N=5 display-model=true ! queue ! mosaic_0. \
\
multifilesrc location=/opt/edgeai-test-data/videos/video0_1280_768.h264 loop=true stop-index=-1 caps=video/x-h264,width=1280,height=768,framerate=30/1 ! h264parse ! v4l2h264dec capture-io-mode=5 ! tiovxmemalloc pool-size=12 ! video/x-raw, format=NV12 ! \
tiovxmultiscaler name=split_11 src_0::roi-startx=80 src_0::roi-starty=48 src_0::roi-width=1120 src_0::roi-height=672 src_2::roi-startx=0 src_2::roi-starty=0 src_2::roi-width=1280 src_2::roi-height=768 target=1 \
\
split_11. ! queue ! video/x-raw, width=280, height=224 ! tiovxmultiscaler target=0 ! video/x-raw, width=224, height=224 ! tiovxdlpreproc model=/opt/model_zoo/ONR-CL-6360-regNetx-200mf out-pool-size=4 ! application/x-tensor-tiovx ! tidlinferer target=1 model=/opt/model_zoo/ONR-CL-6360-regNetx-200mf ! post_2.tensor \
split_11. ! queue ! video/x-raw, width=640, height=360 ! post_2.sink \
tidlpostproc name=post_2 model=/opt/model_zoo/ONR-CL-6360-regNetx-200mf alpha=0.400000 viz-threshold=0.500000 top-N=5 display-model=true ! queue ! mosaic_0. \
\
split_11. ! queue ! video/x-raw, width=512, height=512 ! tiovxdlpreproc model=/opt/model_zoo/ONR-SS-8610-deeplabv3lite-mobv2-ade20k32-512x512 out-pool-size=4 ! application/x-tensor-tiovx ! tidlinferer target=1 model=/opt/model_zoo/ONR-SS-8610-deeplabv3lite-mobv2-ade20k32-512x512 ! post_3.tensor \
split_11. ! queue ! video/x-raw, width=640, height=360 ! post_3.sink \
tidlpostproc name=post_3 model=/opt/model_zoo/ONR-SS-8610-deeplabv3lite-mobv2-ade20k32-512x512 alpha=0.400000 viz-threshold=0.500000 top-N=5 display-model=true ! queue ! mosaic_0. \
\
\
tiovxmosaic name=mosaic_0 target=1 src::pool-size=4 \
sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<640>" sink_0::heights="<360>" \
sink_1::startx="<960>" sink_1::starty="<150>" sink_1::widths="<640>" sink_1::heights="<360>" \
sink_2::startx="<320>" sink_2::starty="<530>" sink_2::widths="<640>" sink_2::heights="<360>" \
sink_3::startx="<960>" sink_3::starty="<530>" sink_3::widths="<640>" sink_3::heights="<360>" \
! video/x-raw,format=NV12, width=1920, height=1080 ! queue ! tiperfoverlay title="Multi Input, Multi Inference" overlay-type=graph ! kmssink driver-name=tidss sync=false
Fig. 6.5 OpTIFlow pipeline for multi input multi inference¶
6.2. Python/C++ apps¶
6.2.1. Image Classification¶
Input: USB Camera
DL Task: Classification
Output: Display
A frame is grabbed from an input source and split into two paths. The “analytics” path resizes the input maintaining the aspect ratio and crops the input to match the resolution required to run the deep learning network. A buffer is pulled from “analytics” path using appsink and provided to OSRT libraries for inference. Another buffer is pulled from “visualization” path and if provided to the post-processing module along with inference result. Post-processing module uses OpenCV to overlay the detected classes. Post-processed output is given to HW mosaic plugin which positions and resizes the output window on an empty background before sending to display.
GStreamer input pipeline:
v4l2src device=/dev/video-usb-cam0 ! capsfilter caps="image/jpeg, width=(int)1280, height=(int)720;" ! jpegdec ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12;" ! tiovxmultiscaler name=split_01
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)1280, height=(int)720;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_0
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)454, height=(int)256;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! videobox qos=True left=115 right=115 top=16 bottom=16 ! tiovxdlpreproc out-pool-size=4 channel-order=1 data-type=3 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_0
GStreamer output pipeline:
appsrc do-timestamp=True format=3 block=True name=post_0 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)1280, height=(int)720;" ! queue ! mosaic_0.sink_0
tiovxmosaic target=1 background=/tmp/background_0 name=mosaic_0 src::pool-size=4
sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<1280>" sink_0::heights="<720>"
! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)1920, height=(int)1080;" ! queue ! tiperfoverlay title=Image Classification ! kmssink sync=false force-modesetting=True
Fig. 6.6 Python/C++ application data-flow for image classification demo with USB camera and display¶
6.2.2. Object Detection¶
Input: IMX219 Camera
DL Task: Detection
Output: File
A frame is grabbed from an input source and split into two paths. The “analytics” path resizes the input maintaining the aspect ratio and crops the input to match the resolution required to run the deep learning network. A buffer is pulled from “analytics” path using appsink and provided to OSRT libraries for inference. Another buffer is pulled from “visualization” path and if provided to the post-processing module along with inference result. Post-processing module uses OpenCV to overlay rectangles around detected objects. Post-processed output is given to HW mosaic plugin which positions and resizes the output window on an empty background before sending to encode and save as file.
GStreamer input pipeline:
v4l2src device=/dev/video-imx219-cam0 io-mode=5 pixel-aspect-ratio=None ! queue leaky=2 ! capsfilter caps="video/x-bayer, width=(int)1920, height=(int)1080, format=(string)rggb;" ! tiovxisp dcc-isp-file=/opt/imaging/imx219/linear/dcc_viss.bin sensor-name=SENSOR_SONY_IMX219_RPI ! capsfilter caps="video/x-raw, format=(string)NV12;" ! tiovxmultiscaler name=split_01
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)1280, height=(int)720;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_0
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)1168, height=(int)748;" ! tiovxmultiscaler target=1 ! capsfilter caps="video/x-raw, width=(int)416, height=(int)416;" ! tiovxdlpreproc out-pool-size=4 data-type=3 tensor-format=1 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_0
GStreamer output pipeline:
appsrc do-timestamp=True format=3 block=True name=post_0 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)1280, height=(int)720;" ! queue ! mosaic_0.sink_0
tiovxmosaic target=1 background=/tmp/background_0 name=mosaic_0 src::pool-size=2
sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<1280>" sink_0::heights="<720>"
! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)1920, height=(int)1080;" !
v4l2h264enc extra-controls="controls, frame_level_rate_control_enable=(int)1, video_bitrate=(int)10000000, video_gop_size=(int)30;" !
h264parse ! matroskamux writing-app=GStreamer Matroska muxer ! filesink sync=False location=/opt/edgeai-test-data/output/output_video.mkv
Fig. 6.7 Python/C++ application data-flow for object detection demo with IMX219 camera and save to file¶
6.2.3. Semantic Segmentation¶
Input: H264 Video
DL Task: Segmentation
Output: Remote streaming
A frame is grabbed from an input source and split into two paths. The “analytics” path resizes the input maintaining the aspect ratio and crops the input to match the resolution required to run the deep learning network. A buffer is pulled from “analytics” path using appsink and provided to OSRT libraries for inference. Another buffer is pulled from “visualization” path and if provided to the post-processing module along with inference result. Post-processing module uses OpenCV to blend each segmented pixel to a color map. Post-processed output is given to HW mosaic plugin which positions and resizes the output window on an empty background before sending to encode and stream.
GStreamer input pipeline:
multifilesrc location=/opt/edgeai-test-data/videos/video0_1280_768.h264 loop=True ! h264parse ! v4l2h264dec capture-io-mode=5 ! tiovxmemalloc pool-size=12 ! capsfilter caps="video/x-raw, format=(string)NV12;" ! tiovxmultiscaler name=split_01
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)1280, height=(int)720;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_0
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)512, height=(int)512;" ! tiovxdlpreproc out-pool-size=4 channel-order=1 data-type=3 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_0
GStreamer output pipeline:
appsrc do-timestamp=True format=3 block=True name=post_0 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)1280, height=(int)720;" ! queue ! mosaic_0.sink_0
tiovxmosaic target=1 background=/tmp/background_0 name=mosaic_0 src::pool-size=4
sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<1280>" sink_0::heights="<720>"
! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)1920, height=(int)1080;" ! queue ! tiperfoverlay title=Semantic Segmentation !
v4l2jpegenc ! multipartmux boundary=spionisto ! rndbuffersize max=65000 ! udpsink sync=False clients=127.0.0.1:8081 host=127.0.0.1 port=8081
Fig. 6.8 Python/C++ application data-flow for semantic segmentation demo with file input and remote streaming¶
6.2.4. Single Input Multi Inference¶
Input: H264 Video
DL Task: Detection, Detection, Classification, Segmentation
Output: Display
GStreamer input pipeline:
multifilesrc location=/opt/edgeai-test-data/videos/video0_1280_768.h264 loop=True ! h264parse ! v4l2h264dec capture-io-mode=5 ! tiovxmemalloc pool-size=12 ! capsfilter caps="video/x-raw, format=(string)NV12;" ! tee name=tee_split0
tee_split0. ! queue ! tiovxmultiscaler name=split_01
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)640, height=(int)360;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_0
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)320, height=(int)320;" ! tiovxdlpreproc out-pool-size=4 channel-order=1 data-type=3 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_0
tee_split0. ! queue ! tiovxmultiscaler name=split_02
split_02. ! queue ! capsfilter caps="video/x-raw, width=(int)640, height=(int)360;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_1
split_02. ! queue ! capsfilter caps="video/x-raw, width=(int)416, height=(int)416;" ! tiovxdlpreproc out-pool-size=4 data-type=3 tensor-format=1 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_1
tee_split0. ! queue ! tiovxmultiscaler name=split_03
split_03. ! queue ! capsfilter caps="video/x-raw, width=(int)640, height=(int)360;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_2
split_03. ! queue ! capsfilter caps="video/x-raw, width=(int)426, height=(int)256;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! videobox qos=True left=101 right=101 top=16 bottom=16 ! tiovxdlpreproc out-pool-size=4 data-type=3 tensor-format=1 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_2
tee_split0. ! queue ! tiovxmultiscaler name=split_04
split_04. ! queue ! capsfilter caps="video/x-raw, width=(int)640, height=(int)360;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_3
split_04. ! queue ! capsfilter caps="video/x-raw, width=(int)512, height=(int)512;" ! tiovxdlpreproc out-pool-size=4 data-type=3 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_3
GStreamer output pipeline:
appsrc do-timestamp=True format=3 block=True name=post_0 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)640, height=(int)360;" ! queue ! mosaic_0.sink_0
appsrc do-timestamp=True format=3 block=True name=post_1 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)640, height=(int)360;" ! queue ! mosaic_0.sink_1
appsrc do-timestamp=True format=3 block=True name=post_2 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)640, height=(int)360;" ! queue ! mosaic_0.sink_2
appsrc do-timestamp=True format=3 block=True name=post_3 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)640, height=(int)360;" ! queue ! mosaic_0.sink_3
tiovxmosaic target=1 background=/tmp/background_0 name=mosaic_0 src::pool-size=4
sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<640>" sink_0::heights="<360>"
sink_1::startx="<960>" sink_1::starty="<150>" sink_1::widths="<640>" sink_1::heights="<360>"
sink_2::startx="<320>" sink_2::starty="<530>" sink_2::widths="<640>" sink_2::heights="<360>"
sink_3::startx="<960>" sink_3::starty="<530>" sink_3::widths="<640>" sink_3::heights="<360>"
! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)1920, height=(int)1080;" ! queue ! tiperfoverlay title=Single Input, Multi Inference ! kmssink sync=false driver-name=tidss force-modesetting=True
Fig. 6.9 Python/C++ application data-flow for single input multi inference¶
6.2.5. Multi Input Multi Inference¶
Input: USB Camera, H264 Video
DL Task: Detection, Detection, Classification, Segmentation
Output: Display
GStreamer input pipeline:
v4l2src device=/dev/video-usb-cam0 ! capsfilter caps="image/jpeg, width=(int)1280, height=(int)720;" ! jpegdec ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12;" ! tee name=tee_split0
tee_split0. ! queue ! tiovxmultiscaler name=split_01
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)640, height=(int)360;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_0
split_01. ! queue ! capsfilter caps="video/x-raw, width=(int)320, height=(int)320;" ! tiovxdlpreproc out-pool-size=4 channel-order=1 data-type=3 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_0
tee_split0. ! queue ! tiovxmultiscaler name=split_02
split_02. ! queue ! capsfilter caps="video/x-raw, width=(int)640, height=(int)360;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_1
split_02. ! queue ! capsfilter caps="video/x-raw, width=(int)416, height=(int)416;" ! tiovxdlpreproc out-pool-size=4 data-type=3 tensor-format=1 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_1
multifilesrc location=/opt/edgeai-test-data/videos/video0_1280_768.h264 index=1 loop=True ! h264parse ! v4l2h264dec capture-io-mode=5 ! tiovxmemalloc pool-size=12 ! capsfilter caps="video/x-raw, format=(string)NV12;" ! tee name=tee_split1
tee_split1. ! queue ! tiovxmultiscaler name=split_11
split_11. ! queue ! capsfilter caps="video/x-raw, width=(int)640, height=(int)360;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_2
split_11. ! queue ! capsfilter caps="video/x-raw, width=(int)426, height=(int)256;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! videobox qos=True left=101 right=101 top=16 bottom=16 ! tiovxdlpreproc out-pool-size=4 data-type=3 tensor-format=1 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_2
tee_split1. ! queue ! tiovxmultiscaler name=split_12
split_12. ! queue ! capsfilter caps="video/x-raw, width=(int)640, height=(int)360;" ! tiovxdlcolorconvert out-pool-size=4 ! capsfilter caps="video/x-raw, format=(string)RGB;" ! appsink max-buffers=2 drop=True name=sen_3
split_12. ! queue ! capsfilter caps="video/x-raw, width=(int)512, height=(int)512;" ! tiovxdlpreproc out-pool-size=4 data-type=3 ! capsfilter caps="application/x-tensor-tiovx;" ! appsink max-buffers=2 drop=True name=pre_3
GStreamer output pipeline:
appsrc do-timestamp=True format=3 block=True name=post_0 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)640, height=(int)360;" ! queue ! mosaic_0.sink_0
appsrc do-timestamp=True format=3 block=True name=post_1 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)640, height=(int)360;" ! queue ! mosaic_0.sink_1
appsrc do-timestamp=True format=3 block=True name=post_2 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)640, height=(int)360;" ! queue ! mosaic_0.sink_2
appsrc do-timestamp=True format=3 block=True name=post_3 ! tiovxdlcolorconvert ! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)640, height=(int)360;" ! queue ! mosaic_0.sink_3
tiovxmosaic target=1 background=/tmp/background_0 name=mosaic_0 src::pool-size=4
sink_0::startx="<320>" sink_0::starty="<150>" sink_0::widths="<640>" sink_0::heights="<360>"
sink_1::startx="<960>" sink_1::starty="<150>" sink_1::widths="<640>" sink_1::heights="<360>"
sink_2::startx="<320>" sink_2::starty="<530>" sink_2::widths="<640>" sink_2::heights="<360>"
sink_3::startx="<960>" sink_3::starty="<530>" sink_3::widths="<640>" sink_3::heights="<360>"
! capsfilter caps="video/x-raw, format=(string)NV12, width=(int)1920, height=(int)1080;" ! queue ! tiperfoverlay title=Multi Input, Multi Inference ! kmssink sync=false driver-name=tidss force-modesetting=True
Fig. 6.10 Python/C++ application data-flow for multi input multi inference¶