 Kria™ KV260 Vision AI Starter Kit
|
Customizing the AI Models Used in the Application |
Customizing the AI Models Used in the Application¶
Introduction¶
This document provides an overview of how to customize the default smartcam application to use other AI models.
Prerequisites¶
Other than the three models provided via the command line option, --aitask, as documented here.
facedetect (densebox_320_320)
refinedet (refinedet_pruned_0_96)
ssd (ssd_adas_pruned_0_95)
Customization can be made to use other AMD Vitis™ AI models or retrained model by the users of the same class.
Model Preparation¶
NOTE:
The design currently only supports Vitis AI 2.5.0.
As described in the Hardware Accelerator section, the data-processing unit (DPU) integrated in the platform uses the B3136 configuration.
The arch.json used to compile the xmodel for THE B3136 DPU can be obtained by building the accelerator, but if you will not build all from the start, you can obtain the DPU fingerprint by using the following commands on the target SOM:
xdputil query
You will get output similar to the following:
...
"kernels":[
{
...
"fingerprint":"0x101000016010406",
...
}
]
Save the fingerprint as arch.json.
{
"fingerprint":"0x101000016010406"
}
For detailed instructions on obtaining an alternative model from the AMD model zoo or training, pruning, quantizing, and compiling a new model, refer to the Vitis AI User Guide (UG1414).
Configuration Files¶
To integrate a different .xmodel into the smartcam application, the following configuration files must be updated accordingly.
AI Inference Config:
Take the refinedet aiinference.json
/opt/xilinx/kv260-smartcam/share/vvas/refinedet/aiinference.jsonas an example:
{
"vvas-library-repo": "/usr/lib/",
"element-mode":"inplace",
"kernels" :[
{
"library-name":"libvvas_xdpuinfer.so",
"config": {
"model-name" : "refinedet_pruned_0_96",
"model-class" : "REFINEDET",
"model-path" : "/opt/xilinx/kv260-smartcam/share/vitis_ai_library/models",
"run_time_model" : false,
"need_preprocess" : false,
"performance_test" : false,
"debug_level" : 0
}
}
]
}
You can change the model-name and model-path fields to use the customized xmdel file at ${model-path}/${model-name}/${model-name}.xmodel.
Pay attention to the field “need_preprocess”, which is now “false”, which tells the Vitis AI Library the input buffer is already the resized and the quantized BGR image as required by the model. And the preprocess is done by the preprocess plugin with the proper configuration which will be detailed in next section.
When you set the “need_preprocess” here to “true” for some reason, you should also make change to the process configuration to ask the preprocess IP works just as color conversion and resizing.
Preprocess Config:
"config": { "debug_level" : 1, "mean_r": 123, "mean_g": 117, "mean_b": 104, "scale_r": 0.5, "scale_g": 0.5, "scale_b": 0.5 }
The configuration value of the mean for r/g/b channels should be the same as the ones specified in the Vitis AI Model prototxt file.
model { name : "refinedet_480x360_5G" kernel { name: "refinedet_480x360_5G" mean: 104.0 mean: 117.0 mean: 123.0 scale: 1.0 scale: 1.0 scale: 1.0 } }NOTE: The channel sequence in the Vitis AI model prototxt file is B, G, R, not R, G, B, as the above samples show.
The configuration value of the scale is determined by both the prototxt and input tensor’s fixpos info contained in compiled xmodel file.
First, use the following command to get input tensor’s fixpos:
xdputil xmodel Path-to-xmodelfile -l
You will get some output similar to the following:
{ "subgraphs":[ { "index":0, "name":"subgraph_data", "device":"USER" }, { "index":0, "name":"subgraph_Elt3", "device":"DPU", "fingerprint":"0x101000016010406", "DPU Arch":"DPUCZDX8G_ISA1_B3136", "input_tensor":[ { "name":"data_fixed", "shape":"[1, 360, 480, 3]", "fixpos":-1 } ], } ] }
So the input tensor’s fixpos is “-1” here.
The configured scale = prototxt_scale * (2 ^ fixpos) = 1 * (2^-1) = 0.5.
Example¶
Take the Vitis AI model yolov3_coco_416_tf2 as example; detailed steps are provided to add an AI task for the smartcam application.
Create the folder,
yolov3_coco, under/opt/xilinx/kv260-smartcam/share/vvas/, so thatyolov3_cococan be used as the value for argument,--AItask.Download the model file for
GPUandzcu102 & zcu104 & kv260from the link provided in https://github.com/Xilinx/Vitis-AI/blob/master/model_zoo/model-list/tf2_yolov3_coco_416_416_65.9G_2.5/model.yaml. After extraction, you get the following file structure:│ README.md │ requirements.txt │ ├───code │ └───test │ │ cocoval.py │ │ convert_data.sh │ │ Dockerfile │ │ download_data.sh │ │ eval.py │ │ LICENSE │ │ README.md │ │ requirements.txt │ │ run_eval.sh │ │ train.py │ │ yolo.py │ │ │ ├───cfg │ │ csdarknet53-omega.cfg │ │ darknet19_448_body.cfg │ │ darknet53.cfg │ │ yolo-fastest-xl.cfg │ │ yolo-fastest.cfg │ │ yolov2-tiny-voc.cfg │ │ yolov2-tiny.cfg │ │ yolov2-voc.cfg │ │ yolov2.cfg │ │ yolov3-spp.cfg │ │ yolov3-tiny.cfg │ │ yolov3.cfg │ │ yolov4-csp.cfg │ │ yolov4-csp_fixed.cfg │ │ yolov4-sam-mish.cfg │ │ yolov4-tiny.cfg │ │ yolov4.cfg │ │ │ ├───common │ │ │ callbacks.py │ │ │ data_utils.py │ │ │ model_utils.py │ │ │ utils.py │ │ │ wbf_postprocess.py │ │ │ yolo_postprocess_np.py │ │ │ │ │ └───backbones │ │ │ efficientnet.py │ │ │ ghostnet.py │ │ │ layers.py │ │ │ mobilenet.py │ │ │ mobilenet_v2.py │ │ │ mobilenet_v3.py │ │ │ mobilevit.py │ │ │ peleenet.py │ │ │ shufflenet.py │ │ │ shufflenet_v2.py │ │ │ squeezenet.py │ │ │ │ │ └───imagenet_training │ │ │ data_utils.py │ │ │ heatmap_check.py │ │ │ README.md │ │ │ train_imagenet.py │ │ │ │ │ └───imagenet_preprocess │ │ imagenet_2012_label_map.txt │ │ imagenet_2012_validation_synset_labels.txt │ │ preprocess_imagenet_train_data.py │ │ preprocess_imagenet_validation_data.py │ │ │ ├───configs │ │ coco2017_origin_classes.txt │ │ coco_classes.txt │ │ objects365_classes.txt │ │ scaled-yolo4-csp_anchors.txt │ │ tiny_yolo3_anchors.txt │ │ VOC2012_person_test.txt │ │ voc_classes.txt │ │ yolo2-tiny-voc_anchors.txt │ │ yolo2-tiny_anchors.txt │ │ yolo2-voc_anchors.txt │ │ yolo2_anchors.txt │ │ yolo3_anchors.txt │ │ yolo4_anchors.txt │ │ yolo5_anchors.txt │ │ yolo_fastest_anchors.txt │ │ │ ├───inference │ │ │ eval_inference.sh │ │ │ README.md │ │ │ │ │ ├───MNN │ │ │ │ CMakeLists.txt │ │ │ │ yoloDetection.cpp │ │ │ │ │ │ │ └───configs │ │ │ quantizeConfig.json │ │ │ │ │ └───tflite │ │ CMakeLists.txt │ │ stb_image.h │ │ stb_image_resize.h │ │ yoloDetection.cpp │ │ yoloDetection.h │ │ │ ├───scaled_yolo4 │ │ └───models │ │ layers.py │ │ scaled_yolo4_csp_darknet.py │ │ │ ├───tools │ │ ├───dataset_converter │ │ │ coco_annotation.py │ │ │ coco_annotation_val.py │ │ │ coco_dataset_to_voc.py │ │ │ coco_to_pascal_voc.py │ │ │ dataset_visualize.py │ │ │ openimage_annotation.py │ │ │ pascal_voc_to_coco.py │ │ │ voc_annotation.py │ │ │ voc_obj_similarity.py │ │ │ voc_to_darknet.py │ │ │ yolo_annotation.py │ │ │ │ │ ├───evaluation │ │ │ model_statistics.py │ │ │ pycoco_eval.py │ │ │ tide_eval.py │ │ │ validate_yolo.py │ │ │ │ │ ├───misc │ │ │ augment_test.py │ │ │ gif_create.py │ │ │ kmeans.py │ │ │ rotate_gridmask_test.py │ │ │ tensor_compare.py │ │ │ yuv_convert.py │ │ │ │ │ └───model_converter │ │ │ convert.py │ │ │ custom_tflite_convert.py │ │ │ keras_to_onnx.py │ │ │ keras_to_tensorflow.py │ │ │ keras_to_tensorflow_bk.py │ │ │ post_train_quant_convert.py │ │ │ tensorflow_to_coreml.py │ │ │ tensorflow_to_rknn.py │ │ │ │ │ └───ghostnet_convertor │ │ convertor.py │ │ ghostnet_pytorch.py │ │ │ ├───tracking │ │ │ mot_tracker.py │ │ │ README.md │ │ │ requirements.txt │ │ │ │ │ ├───cpp_inference │ │ │ │ README.md │ │ │ │ │ │ │ └───yoloSort │ │ │ │ CMakeLists.txt │ │ │ │ Hungarian.cpp │ │ │ │ Hungarian.h │ │ │ │ KalmanTracker.cpp │ │ │ │ KalmanTracker.h │ │ │ │ Sort.cpp │ │ │ │ Sort.h │ │ │ │ yoloSort.cpp │ │ │ │ │ │ │ └───kalman_demo │ │ │ CMakeLists.txt │ │ │ kalman_demo.cpp │ │ │ kalman_demo.py │ │ │ README.md │ │ │ │ │ ├───eval │ │ │ │ formatchecker.py │ │ │ │ importers.py │ │ │ │ pymot.py │ │ │ │ README.md │ │ │ │ rect.py │ │ │ │ utilities.py │ │ │ │ │ │ │ ├───example │ │ │ │ groundtruth.json │ │ │ │ hypotheses.json │ │ │ │ │ │ │ └───tools │ │ │ mot16_annotation.py │ │ │ │ │ └───model │ │ ├───deep_sort │ │ │ detection.py │ │ │ generate_detections.py │ │ │ iou_matching.py │ │ │ kalman_filter.py │ │ │ linear_assignment.py │ │ │ nn_matching.py │ │ │ preprocessing.py │ │ │ track.py │ │ │ tracker.py │ │ │ __init__.py │ │ │ │ │ └───sort │ │ sort.py │ │ │ ├───weights │ │ .gitignore │ │ │ ├───yolo2 │ │ │ data.py │ │ │ loss.py │ │ │ model.py │ │ │ postprocess.py │ │ │ postprocess_np.py │ │ │ __init__.py │ │ │ │ │ └───models │ │ layers.py │ │ yolo2_darknet.py │ │ yolo2_efficientnet.py │ │ yolo2_mobilenet.py │ │ yolo2_mobilenetv2.py │ │ yolo2_mobilenetv3_large.py │ │ yolo2_mobilenetv3_small.py │ │ yolo2_xception.py │ │ │ ├───yolo3 │ │ │ data.py │ │ │ loss.py │ │ │ model.py │ │ │ postprocess.py │ │ │ postprocess_np.py │ │ │ __init__.py │ │ │ │ │ └───models │ │ layers.py │ │ ultralite_layers.py │ │ yolo3_darknet.py │ │ yolo3_efficientnet.py │ │ yolo3_ghostnet.py │ │ yolo3_mobilenet.py │ │ yolo3_mobilenetv2.py │ │ yolo3_mobilenetv3_large.py │ │ yolo3_mobilenetv3_small.py │ │ yolo3_nano.py │ │ yolo3_peleenet.py │ │ yolo3_resnet50.py │ │ yolo3_resnet50v2.py │ │ yolo3_shufflenetv2.py │ │ yolo3_vgg16.py │ │ yolo3_xception.py │ │ │ ├───yolo4 │ │ └───models │ │ layers.py │ │ yolo4_darknet.py │ │ yolo4_efficientnet.py │ │ yolo4_mobilenet.py │ │ yolo4_mobilenetv2.py │ │ yolo4_mobilenetv3_large.py │ │ yolo4_mobilenetv3_small.py │ │ yolo4_resnet50.py │ │ yolo4_resnet50v2.py │ │ │ └───yolo5 │ │ data.py │ │ loss.py │ │ model.py │ │ postprocess.py │ │ postprocess_np.py │ │ │ └───models │ layers.py │ yolo5_darknet.py │ yolo5_mobilenet.py │ yolo5_mobilenetv2.py │ ├───data │ .gitignore │ demo_list.txt ├───float │ yolov3.h5 └───quantized quantized.h5
Prepare the
yolov3_coco_416_tf2.xmodelfile for DPU 3136.
The file `quantized.h5` is the quantized model generated by quantizer. It can be used to generate xmodel file.
Start the vitis-ai model compile docker and copy quantized.h5 and arch.json into it. Using the following command to compile .xmodel file.
conda activate vitis-ai-tensorflow2
vai_c_tensorflow2 -m /PATH/TO/quantized.h5 -a /PATH/TO/arch.json -o /OUTPUTPATH -n yolov3_coco_416_tf2
The yolov3_coco_416_tf2.prototxt can be found in existing file from zcu102 & zcu104 & kv260.
The YOLOv3 object detection model provides prediction of multiple classes in the label file.
person
bicycle
car
motorbike
aeroplane
bus
...
You need to convert the above label info to a json file as requested by the VVAS framework as follows, and name it label.json:
{
"model-name": "yolov3_coco_416_tf2",
"num-labels": 80,
"labels": [
{
"label": 0,
"name": "person",
"display_name": "person"
},
{
"label": 1,
"name": "bicycle",
"display_name": "bicycle"
},
{
"label": 2,
"name": "car",
"display_name": "car"
},
{
"label": 3,
"name": "motorbike",
"display_name": "motorbike"
},
{
"label": 4,
"name": "aeroplane",
"display_name": "aeroplane"
},
{
"label": 5,
"name": "bus",
"display_name": "bus"
},
{
"label": 6,
"name": "train",
"display_name": "train"
},
{
"label": 7,
"name": "truck",
"display_name": "truck"
},
{
"label": 8,
"name": "boat",
"display_name": "boat"
},
{
"label": 9,
"name": "traffic light",
"display_name": "traffic light"
},
{
"label": 10,
"name": "fire hydrant",
"display_name": "fire hydrant"
},
{
"label": 11,
"name": "stop sign",
"display_name": "stop sign"
},
{
"label": 12,
"name": "parking meter",
"display_name": "parking meter"
},
{
"label": 13,
"name": "bench",
"display_name": "bench"
},
{
"label": 14,
"name": "bird",
"display_name": "bird"
},
{
"label": 15,
"name": "cat",
"display_name": "cat"
},
{
"label": 16,
"name": "dog",
"display_name": "dog"
},
{
"label": 17,
"name": "horse",
"display_name": "horse"
},
{
"label": 18,
"name": "sheep",
"display_name": "sheep"
},
{
"label": 19,
"name": "cow",
"display_name": "cow"
},
{
"label": 20,
"name": "elephant",
"display_name": "elephant"
},
{
"label": 21,
"name": "bear",
"display_name": "bear"
},
{
"label": 22,
"name": "zebra",
"display_name": "zebra"
},
{
"label": 23,
"name": "giraffe",
"display_name": "giraffe"
},
{
"label": 24,
"name": "backpack",
"display_name": "backpack"
},
{
"label": 25,
"name": "umbrella",
"display_name": "umbrella"
},
{
"label": 26,
"name": "handbag",
"display_name": "handbag"
},
{
"label": 27,
"name": "tie",
"display_name": "tie"
},
{
"label": 28,
"name": "suitcase",
"display_name": "suitcase"
},
{
"label": 29,
"name": "frisbee",
"display_name": "frisbee"
},
{
"label": 30,
"name": "skis",
"display_name": "skis"
},
{
"label": 31,
"name": "snowboard",
"display_name": "snowboard"
},
{
"label": 32,
"name": "sports ball",
"display_name": "sports ball"
},
{
"label": 33,
"name": "kite",
"display_name": "kite"
},
{
"label": 34,
"name": "baseball bat",
"display_name": "baseball bat"
},
{
"label": 35,
"name": "baseball glove",
"display_name": "baseball glove"
},
{
"label": 36,
"name": "skateboard",
"display_name": "skateboard"
},
{
"label": 37,
"name": "surfboard",
"display_name": "surfboard"
},
{
"label": 38,
"name": "tennis racket",
"display_name": "tennis racket"
},
{
"label": 39,
"name": "bottle",
"display_name": "bottle"
},
{
"label": 40,
"name": "wine glass",
"display_name": "wine glass"
},
{
"label": 41,
"name": "cup",
"display_name": "cup"
},
{
"label": 42,
"name": "fork",
"display_name": "fork"
},
{
"label": 43,
"name": "knife",
"display_name": "knife"
},
{
"label": 44,
"name": "spoon",
"display_name": "spoon"
},
{
"label": 45,
"name": "bowl",
"display_name": "bowl"
},
{
"label": 46,
"name": "banana",
"display_name": "banana"
},
{
"label": 47,
"name": "apple",
"display_name": "apple"
},
{
"label": 48,
"name": "sandwich",
"display_name": "sandwich"
},
{
"label": 49,
"name": "orange",
"display_name": "orange"
},
{
"label": 50,
"name": "broccoli",
"display_name": "broccoli"
},
{
"label": 51,
"name": "carrot",
"display_name": "carrot"
},
{
"label": 52,
"name": "hot dog",
"display_name": "hot dog"
},
{
"label": 53,
"name": "pizza",
"display_name": "pizza"
},
{
"label": 54,
"name": "donut",
"display_name": "donut"
},
{
"label": 55,
"name": "cake",
"display_name": "cake"
},
{
"label": 56,
"name": "chair",
"display_name": "chair"
},
{
"label": 57,
"name": "sofa",
"display_name": "sofa"
},
{
"label": 58,
"name": "pottedplant",
"display_name": "pottedplant"
},
{
"label": 59,
"name": "bed",
"display_name": "bed"
},
{
"label": 60,
"name": "diningtable",
"display_name": "diningtable"
},
{
"label": 61,
"name": "toilet",
"display_name": "toilet"
},
{
"label": 62,
"name": "tvmonitor",
"display_name": "tvmonitor"
},
{
"label": 63,
"name": "laptop",
"display_name": "laptop"
},
{
"label": 64,
"name": "mouse",
"display_name": "mouse"
},
{
"label": 65,
"name": "remote",
"display_name": "remote"
},
{
"label": 66,
"name": "keyboard",
"display_name": "keyboard"
},
{
"label": 67,
"name": "cell phone",
"display_name": "cell phone"
},
{
"label": 68,
"name": "microwave",
"display_name": "microwave"
},
{
"label": 69,
"name": "oven",
"display_name": "oven"
},
{
"label": 70,
"name": "toaster",
"display_name": "toaster"
},
{
"label": 71,
"name": "sink",
"display_name": "sink"
},
{
"label": 72,
"name": "refrigerator",
"display_name": "refrigerator"
},
{
"label": 73,
"name": "book",
"display_name": "book"
},
{
"label": 74,
"name": "clock",
"display_name": "clock"
},
{
"label": 75,
"name": "vase",
"display_name": "vase"
},
{
"label": 76,
"name": "scissors",
"display_name": "scissors"
},
{
"label": 77,
"name": "teddy bear",
"display_name": "teddy bear"
},
{
"label": 78,
"name": "hair drier",
"display_name": "hair drier"
},
{
"label": 79,
"name": "toothbrush",
"display_name": "toothbrush"
}
]
}
Put the prototxt file together with the xmodel and label.json file to /opt/xilinx/kv260-smartcam/share/vitis_ai_library/models/yolov3_coco_416_tf2/.
opt
└── xilinx
└── kv260-smartcam
└── share
└── vitis_ai_library
└── models
└── yolov3_coco_416_tf2
├── yolov3_coco_416_tf2.prototxt
├── yolov3_coco_416_tf2.xmodel
└── label.json
Create the configuration files for yolov3_coco_416_tf2.
preprocess.jsonThe mean and scale of the B, G, R channel is taken from the prototxt of the model.
model { kernel { mean: 0.0 mean: 0.0 mean: 0.0 scale: 0.00390625 scale: 0.00390625 scale: 0.00390625 } model_type : YOLOv3 yolo_v3_param { num_classes: 80 anchorCnt: 3 layer_name: "58" layer_name: "66" layer_name: "74" conf_threshold: 0.3 nms_threshold: 0.45 biases: 10 biases: 13 biases: 16 biases: 30 biases: 33 biases: 23 biases: 30 biases: 61 biases: 62 biases: 45 biases: 59 biases: 119 biases: 116 biases: 90 biases: 156 biases: 198 biases: 373 biases: 326 test_mAP: false } }Use the following command to get the fixpos:
xdputil xmodel ./yolov3_coco_416_tf2.xmodel -l ... "input_tensor":[ { "index":0, "name":"quant_image_input", "shape":[ 1, 416, 416, 3 ], "fixpos":6 } ], ... ```
The configured scale = prototxt_scale * (2 ^ fixpos) = 0.00390625 * (2^6) = 0.25.
```json
{
"xclbin-location":"/lib/firmware/xilinx/kv260-smartcam/kv260-smartcam.xclbin",
"vvas-library-repo": "/opt/xilinx/kv260-smartcam/lib",
"element-mode": "transform",
"kernels": [
{
"kernel-name": "pp_pipeline_accel:{pp_pipeline_accel_1}",
"library-name": "libvvas_xpp.so",
"config": {
"debug_level" : 1,
"mean_r": 0,
"mean_g": 0,
"mean_b": 0,
"scale_r": 0.25,
"scale_g": 0.25,
"scale_b": 0.25
}
}
]
}
```
aiinference.json{ "xclbin-location":"/lib/firmware/xilinx/kv260-smartcam/kv260-smartcam.xclbin", "vvas-library-repo": "/usr/lib/aarch64-linux-gnu/", "element-mode":"inplace", "kernels" :[ { "library-name":"libvvas_xdpuinfer.so", "config": { "model-name" : "yolov3_coco_416_tf2", "model-class" : "YOLOV3", "model-path" : "/opt/xilinx/kv260-smartcam/share/vitis_ai_library/models", "run_time_model" : false, "need_preprocess" : false, "performance_test" : false, "debug_level" : 0 } } ] }
drawresult.jsonHere you pick up four classes to be shown: car, person, truck, bicycle; and customize the color for each class as follows:
{ "xclbin-location":"/usr/lib/dpu.xclbin", "vvas-library-repo": "/opt/xilinx/kv260-smartcam/lib", "element-mode":"inplace", "kernels" :[ { "library-name":"libvvas_airender.so", "config": { "fps_interval" : 10, "font_size" : 2, "font" : 3, "thickness" : 2, "debug_level" : 0, "label_color" : { "blue" : 0, "green" : 0, "red" : 255 }, "label_filter" : [ "class", "probability" ], "classes" : [ { "name" : "car", "blue" : 255, "green" : 0, "red" : 0 }, { "name" : "person", "blue" : 0, "green" : 255, "red" : 0 }, { "name" : "truck", "blue" : 128, "green" : 255, "red" : 0 }, { "name" : "bicycle", "blue" : 0, "green" : 0, "red" : 255 }] } } ] }
Next Steps¶
Go back to the KV260 SOM Smart Camera Design Start Page.
References¶
Vitis AI User Guide (UG1414)
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