File "nanodet-main/nanodet/trainer/trainer.py", line 89, in run_epoch results[meta['img_info']['id'].cpu().numpy()[0]] = dets AttributeError: 'list' object has no attribute 'cpu'

Hi, I'm training NanoDet-m model (ShuffleNetV2 1.0x | 320*320) from scratch with Coco dataset and 4 GeForce RTX 2080 Ti. Convergence seems pretty slow, it could take 1-2 weeks.

May I ask how long did it takes for you to reach 20.6 mAP, and which setup did you use?

Thank you.

你好，我想请教两个问题：

1. 在nanodet.cpp文件中的NanoDet::detect(cv::Mat image, float score_threshold, float nms_threshold)函数中，给模型输入数据的时候是用的ex.input("input.1", input);,这里的input.1是什么意思呢，是输入层的名字吗，我怎么通过pytorch查看到这个名字呢，print(model)后没看到层的名字，在Tencent/ncnn/tree/master/examples 上看到基本上都是ex.input("input", input);，如果我加载自己训练的一个模型，这里应该怎么匹配？
2. 在nadodet.h中，有一个 std::vector heads_info，这个里面的值具体是什么含义呢，是和网络输出有关的吗

    std::vector<HeadInfo> heads_info{
        // cls_pred|dis_pred|stride
            {"792", "795",    8},
            {"814", "817",   16},
            {"836", "839",   32},
    };

对pytorch以及nano网络都不是很熟，望见谅。

我的运行环境: cuda==10.1 pytorch==1.7 torchvision==0.8.0 当我运行"python demo/demo.py image --config CONFIG_PATH --model MODEL_PATH --path IMAGE_PATH",尝试推理图片时, 出现错误: RuntimeError: Could not run 'torchvision::nms' with arguments from the 'CUDA' backend. 'torchvision::nms' is only available for these backends: [CPU, BackendSelect, Named, AutogradOther, AutogradCPU, AutogradCUDA, AutogradXLA, Tracer, Autocast, Batched, VmapMode].

CPU: registered at /root/project/torchvision/csrc/vision.cpp:59 [kernel] BackendSelect: fallthrough registered at /pytorch/aten/src/ATen/core/BackendSelectFallbackKernel.cpp:3 [backend fallback] Named: registered at /pytorch/aten/src/ATen/core/NamedRegistrations.cpp:7 [backend fallback] AutogradOther: fallthrough registered at /pytorch/aten/src/ATen/core/VariableFallbackKernel.cpp:35 [backend fallback] AutogradCPU: fallthrough registered at /pytorch/aten/src/ATen/core/VariableFallbackKernel.cpp:39 [backend fallback] AutogradCUDA: fallthrough registered at /pytorch/aten/src/ATen/core/VariableFallbackKernel.cpp:43 [backend fallback] AutogradXLA: fallthrough registered at /pytorch/aten/src/ATen/core/VariableFallbackKernel.cpp:47 [backend fallback] Tracer: fallthrough registered at /pytorch/torch/csrc/jit/frontend/tracer.cpp:967 [backend fallback] Autocast: fallthrough registered at /pytorch/aten/src/ATen/autocast_mode.cpp:254 [backend fallback] Batched: registered at /pytorch/aten/src/ATen/BatchingRegistrations.cpp:511 [backend fallback] VmapMode: fallthrough registered at /pytorch/aten/src/ATen/VmapModeRegistrations.cpp:33 [backend fallback]

但是当我把:/nanodet/nanodet/model/module/nms.py batched_nms(boxes, scores, idxs, nms_cfg, class_agnostic=False)函数改后:

boxes_for_nms = boxes_for_nms.cpu()
scores = scores.cpu()
boxes = boxes.cpu()
split_thr = nms_cfg_.pop('split_thr', 10000)
if len(boxes_for_nms) < split_thr:
    # dets, keep = nms_op(boxes_for_nms, scores, **nms_cfg_)
    keep = nms(boxes_for_nms, scores, **nms_cfg_)
    boxes = boxes[keep]
    # scores = dets[:, -1]
    scores = scores[keep]

demo.py正常运行.

coco.py

if self.load_mosaic and not isval:
            img4, labels4, bbox4 = load_mosaic(self, idx)
            meta['img_info']['height'] = img4.shape[0]
            meta['img_info']['width'] = img4.shape[1]
            meta['img'] = img4
            meta['gt_labels'] = labels4
            meta['gt_bboxes'] = bbox4


        meta = self.pipeline(self, meta, input_size)

        meta["img"] = torch.from_numpy(meta["img"].transpose(2, 0, 1))
        return meta

在ShapeTransform里测试打印出来的bbox是正常的

meta_data["img"] = img
        meta_data["warp_matrix"] = M
        if "gt_bboxes" in meta_data:
            boxes = meta_data["gt_bboxes"]
            meta_data["gt_bboxes"] = warp_boxes(boxes, M, dst_shape[0], dst_shape[1])
        if "gt_masks" in meta_data:
            for i, mask in enumerate(meta_data["gt_masks"]):
                meta_data["gt_masks"][i] = cv2.warpPerspective(
                    mask, M, dsize=tuple(dst_shape)
                )
        for i in range(meta_data["gt_bboxes"].shape[0]):
            cv2.rectangle(img, (int(meta_data["gt_bboxes"][i][0]), int(meta_data["gt_bboxes"][i][1])), (int(meta_data["gt_bboxes"][i][2]), int(meta_data["gt_bboxes"][i][3])), (255,0,0), 2)
        cv2.imwrite('./%d.jpg' % int(meta_data["gt_bboxes"][0][0]), img)

有什么可能的原因导致的？

使用demo_ncnn和demo_openvino测试转换预训练模型，转换过程均正常，但是预测时候出现问题，想问下怎么解决？

# demo_ncnn
find_blob_index_by_name input.1 failed
Try
find_blob_index_by_name dis_pred_stride_8 failed
Try
find_blob_index_by_name cls_pred_stride_8 failed

# demo_openvino
start init model
success
terminate called after throwing an instance of 'InferenceEngine::details::InferenceEngineException'
what(): Cannot find blob with name: dis_pred_stride_8

发现onnx模型存在dis_pred_stride_8等节点，但是转换后的ncnn模型这几个节点消失 onnx网络结构： ncnn网络结构：

转换的是NanoDet-EfficientLite 512x512这个模型，openvino版本为2021.3.394，能够正常转换，并在程序中加载成功，但推理的时候报错，日志如下： start init model success terminate called after throwing an instance of 'InferenceEngine::details::InferenceEngineException' what(): Cannot find blob with name: 795 有人遇到过吗

Hi, I tried to turn the nanodet-m.pth to coreml for IOS. I used coremltools as the guide, and got error "CoreML export failure: 'ConvModule' object has no attribute 'norm'". I read the source code of nanodet found that the norm in head is BN which should be supported by coreml. So I do not know why is the error happening. Is anyone has tried coreml? Thanks!

Hi,我训练了一个person类的nanodet模型，然后通过tool/export.py转为onnx，然后转为ncnn的model，但是发现ncnn的model没有输出，我更改了cpp代码中的类别与图片size，不知道是在转换onnx时候出错还是onnx->NCNN时候出错了。下面是我训练时候的cfg

#Config File example
save_dir: workspace/nanodet_m
model:
  arch:
    name: GFL
    backbone:
      name: ShuffleNetV2
      model_size: 1.0x
      out_stages: [2,3,4]
      activation: LeakyReLU
    fpn:
      name: PAN
      in_channels: [116, 232, 464]
      out_channels: 96
      start_level: 0
      num_outs: 3
    head:
      name: NanoDetHead
      num_classes: 1
      input_channel: 96
      feat_channels: 96
      stacked_convs: 2
      share_cls_reg: True
      octave_base_scale: 5
      scales_per_octave: 1
      strides: [8, 16, 32]
      reg_max: 7
      norm_cfg:
        type: BN
      loss:
        loss_qfl:
          name: QualityFocalLoss
          use_sigmoid: True
          beta: 2.0
          loss_weight: 1.0
        loss_dfl:
          name: DistributionFocalLoss
          loss_weight: 0.25
        loss_bbox:
          name: GIoULoss
          loss_weight: 2.0
data:
  train:
    name: coco
    img_path: ../data/yoga_coco/images/train2017
    ann_path: ../data/yoga_coco/annotations/instances_train2017.json
    input_size: [416,416] #[w,h]
    keep_ratio: True
    pipeline:
      perspective: 0.0
      scale: [0.6, 1.4]
      stretch: [[1, 1], [1, 1]]
      rotation: 0
      shear: 0
      translate: 0.2
      flip: 0.5
      brightness: 0.2
      contrast: [0.8, 1.2]
      saturation: [0.8, 1.2]
      normalize: [[103.53, 116.28, 123.675], [57.375, 57.12, 58.395]]
  val:
    name: coco
    img_path: ../data/yoga_coco/images/val2017
    ann_path: ../data/yoga_coco/annotations/instances_val2017.json
    input_size: [416,416] #[w,h]
    keep_ratio: True
    pipeline:
      normalize: [[103.53, 116.28, 123.675], [57.375, 57.12, 58.395]]
device:
  gpu_ids: [0]
  workers_per_gpu: 6
  batchsize_per_gpu: 40
schedule:
#  resume:
#  load_model: YOUR_MODEL_PATH
  optimizer:
    name: SGD
    lr: 0.14
    momentum: 0.9
    weight_decay: 0.0001
  warmup:
    name: linear
    steps: 300
    ratio: 0.1
  total_epochs: 50
  lr_schedule:
    name: MultiStepLR
    milestones: [130,160,175,185]
    gamma: 0.1
  val_intervals: 10
evaluator:
  name: CocoDetectionEvaluator
  save_key: mAP

log:
  interval: 10

class_names: ['person',]

当我使用80类的model时，转化为ncnn有结果，所以想问问 当转化成single-class时候，有什么配置是需要再修改一下的。

您好，我想问一下，我这边用pytorch模型转onnx再转ncnn模型，最后用ncnn模型检测结果不对。 有几个修改： 将config中的val输入改为64x64，将tools/export.py的输入大小改为64x64 python tools/export.py python -m onnxsim output.onnx output-sim.onnx build/tools/onnx/onnx2ncnn output-sim.onnx output-sim.param output-sim.bin build/tools/ncnnoptimize output-sim.param output-sim.bin new-output-sim.param new-output-sim.bin 0 这样操作是这样的 pytorch用的1.7.1 onnx 1.8.0 onnx-simplifier 0.2.19 onnxoptimizer 0.1.1 onnxruntime 1.6.0

是哪里操作有问题吗？

Could you please provide pretrained pytorch or onnx model weights also? I noticed you only shared converted ncnn models, but I would like to see the speed of inference on gpu/npu accelerated systems

Tried to : python tools/train.py config/nanodet-plus-m_320.yml error: pytorch_lightning.utilities.cloud_io.get_filesystem has been deprecated in v1.8.0 and will be" [NanoDet][01-04 10:28:00]INFO:Setting up data... loading annotations into memory... Done (t=18.55s) creating index... index created! loading annotations into memory... Done (t=0.56s) creating index... index created! [NanoDet][01-04 10:28:21]INFO:Creating model... model size is 1.0x init weights... => loading pretrained model https://download.pytorch.org/models/shufflenetv2_x1-5666bf0f80.pth Finish initialize NanoDet-Plus Head. GPU available: True (cuda), used: True TPU available: False, using: 0 TPU cores IPU available: False, using: 0 IPUs HPU available: False, using: 0 HPUs /root/anaconda3/envs/nanodet/lib/python3.7/site-packages/torch/cuda/init.py:143: UserWarning: NVIDIA GeForce RTX 3090 with CUDA capability sm_86 is not compatible with the current PyTorch installation. The current PyTorch install supports CUDA capabilities sm_37 sm_50 sm_60 sm_70. If you want to use the NVIDIA GeForce RTX 3090 GPU with PyTorch, please check the instructions at https://pytorch.org/get-started/locally/

warnings.warn(incompatible_device_warn.format(device_name, capability, " ".join(arch_list), device_name)) LOCAL_RANK: 0 - CUDA_VISIBLE_DEVICES: [0,1]

| Name | Type | Params

0 | model | NanoDetPlus | 4.3 M 1 | avg_model | NanoDetPlus | 4.3 M

8.7 M Trainable params 0 Non-trainable params 8.7 M Total params 34.647 Total estimated model params size (MB) [NanoDet][01-04 10:28:21]INFO:Weight Averaging is enabled /root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/trainer/connectors/data_connector.py:229: PossibleUserWarning: The dataloader, train_dataloader, does not have many workers which may be a bottleneck. Consider increasing the value of the num_workers argument(try 40 which is the number of cpus on this machine) in theDataLoader` init to improve performance. category=PossibleUserWarning, Traceback (most recent call last): File "tools/train.py", line 146, in main(args) File "tools/train.py", line 141, in main trainer.fit(task, train_dataloader, val_dataloader) File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 604, in fit self, self._fit_impl, model, train_dataloaders, val_dataloaders, datamodule, ckpt_path File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/trainer/call.py", line 38, in _call_and_handle_interrupt return trainer_fn(*args, **kwargs) File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 645, in _fit_impl self._run(model, ckpt_path=self.ckpt_path) File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 1098, in _run results = self._run_stage() File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 1177, in _run_stage self._run_train() File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 1200, in _run_train self.fit_loop.run() File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/loops/loop.py", line 194, in run self.on_run_start(*args, **kwargs) File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/loops/fit_loop.py", line 206, in on_run_start self.trainer.reset_train_dataloader(self.trainer.lightning_module) File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 1552, in reset_train_dataloader if has_len_all_ranks(self.train_dataloader, self.strategy, module) File "/root/anaconda3/envs/nanodet/lib/python3.7/site-packages/pytorch_lightning/utilities/data.py", line 110, in has_len_all_ranks if total_length == 0: RuntimeError: CUDA error: no kernel image is available for execution on the device CUDA kernel errors might be asynchronously reported at some other API call,so the stacktrace below might be incorrect. For debugging consider passing CUDA_LAUNCH_BLOCKING=1.

python3.7 cuda==10.2 gpu==RT3090 UBUNTU20.04

Thanks

I used the converted COCO 2017 with only labeled persons. Вот мой config:

save_dir: workspace/nanodet-plus-m_416
model:
  weight_averager:
    name: ExpMovingAverager
    decay: 0.9998
  arch:
    name: NanoDetPlus
    detach_epoch: 10
    backbone:
      name: ShuffleNetV2
      model_size: 1.0x
      out_stages: [2,3,4]
      activation: LeakyReLU
    fpn:
      name: GhostPAN
      in_channels: [116, 232, 464]
      out_channels: 96
      kernel_size: 5
      num_extra_level: 1
      use_depthwise: True
      activation: LeakyReLU
    head:
      name: NanoDetPlusHead
      num_classes: 1
      input_channel: 96
      feat_channels: 96
      stacked_convs: 2
      kernel_size: 5
      strides: [8, 16, 32, 64]
      activation: LeakyReLU
      reg_max: 1
      norm_cfg:
        type: BN
      loss:
        loss_qfl:
          name: QualityFocalLoss
          use_sigmoid: True
          beta: 2.0
          loss_weight: 1.0
        loss_dfl:
          name: DistributionFocalLoss
          loss_weight: 0.25
        loss_bbox:
          name: GIoULoss
          loss_weight: 2.0
    # Auxiliary head, only use in training time.
    aux_head:
      name: SimpleConvHead
      num_classes: 1
      input_channel: 192
      feat_channels: 192
      stacked_convs: 4
      strides: [8, 16, 32, 64]
      activation: LeakyReLU
      reg_max: 1
data:
  train:
    name: CocoDataset
    img_path: /home/mosminin/fiftyone/coco_person/train/data
    ann_path: /home/mosminin/fiftyone/coco_person/train/labels.json
    input_size: [416,416] #[w,h]
    keep_ratio: False
    pipeline:
      perspective: 0.0
      scale: [0.6, 1.4]
      stretch: [[0.8, 1.2], [0.8, 1.2]]
      rotation: 0
      shear: 0
      translate: 0.2
      flip: 0.5
      brightness: 0.2
      contrast: [0.6, 1.4]
      saturation: [0.5, 1.2]
      normalize: [[103.53, 116.28, 123.675], [57.375, 57.12, 58.395]]
  val:
    name: CocoDataset
    img_path: /home/mosminin/fiftyone/coco_person/validation/data
    ann_path: /home/mosminin/fiftyone/coco_person/validation/labels.json
    input_size: [416,416] #[w,h]
    keep_ratio: False
    pipeline:
      normalize: [[103.53, 116.28, 123.675], [57.375, 57.12, 58.395]]
device:
  gpu_ids: [0]
  workers_per_gpu: 6
  batchsize_per_gpu: 16
schedule:
#  resume:
#  load_model:
  optimizer:
    name: AdamW
    lr: 0.001
    weight_decay: 0.05
  warmup:
    name: linear
    steps: 500
    ratio: 0.0001
  total_epochs: 300
  lr_schedule:
    name: CosineAnnealingLR
    T_max: 300
    eta_min: 0.00005
  val_intervals: 10
grad_clip: 35
evaluator:
  name: CocoDetectionEvaluator
  save_key: mAP
log:
  interval: 50

class_names: ['person']

I also changed the train.py to use CPU instead of GPU the errors were more understandable.

    # if cfg.device.gpu_ids == -1:
    #     logger.info("Using CPU training")
    #     accelerator, devices, strategy = "cpu", None, None
    # else:
    #     accelerator, devices, strategy = "gpu", cfg.device.gpu_ids, None

    accelerator, devices, strategy = "cpu", None, None # CPU training

After running it, I get the following errors.

(.venv) mosminin@debian:~/dev/nanodet$ python tools/train.py /home/mosminin/dev/nanodet/config/nanodet-plus-m_416_person.yml
/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/utilities/cloud_io.py:33: LightningDeprecationWarning: `pytorch_lightning.utilities.cloud_io.get_filesystem` has been deprecated in v1.8.0 and will be removed in v1.10.0. Please use `lightning_lite.utilities.cloud_io.get_filesystem` instead.
  rank_zero_deprecation(
[NanoDet][12-18 14:05:30]INFO:Setting up data...
loading annotations into memory...
Done (t=4.35s)
creating index...
index created!
loading annotations into memory...
Done (t=0.16s)
creating index...
index created!
[NanoDet][12-18 14:05:35]INFO:Creating model...
model size is  1.0x
init weights...
=> loading pretrained model https://download.pytorch.org/models/shufflenetv2_x1-5666bf0f80.pth
Finish initialize NanoDet-Plus Head.
GPU available: True (cuda), used: False
TPU available: False, using: 0 TPU cores
IPU available: False, using: 0 IPUs
HPU available: False, using: 0 HPUs
/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/trainer/setup.py:175: PossibleUserWarning: GPU available but not used. Set `accelerator` and `devices` using `Trainer(accelerator='gpu', devices=1)`.
  rank_zero_warn(

  | Name      | Type        | Params
------------------------------------------
0 | model     | NanoDetPlus | 4.1 M 
1 | avg_model | NanoDetPlus | 4.1 M 
------------------------------------------
8.2 M     Trainable params
0         Non-trainable params
8.2 M     Total params
32.903    Total estimated model params size (MB)
[NanoDet][12-18 14:05:35]INFO:Weight Averaging is enabled
/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/torch/functional.py:504: UserWarning: torch.meshgrid: in an upcoming release, it will be required to pass the indexing argument. (Triggered internally at ../aten/src/ATen/native/TensorShape.cpp:3190.)
  return _VF.meshgrid(tensors, **kwargs)  # type: ignore[attr-defined]
Traceback (most recent call last):
  File "/home/mosminin/dev/nanodet/tools/train.py", line 147, in <module>
    main(args)
  File "/home/mosminin/dev/nanodet/tools/train.py", line 142, in main
    trainer.fit(task, train_dataloader, val_dataloader)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/trainer/trainer.py", line 603, in fit
    call._call_and_handle_interrupt(
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/trainer/call.py", line 38, in _call_and_handle_interrupt
    return trainer_fn(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/trainer/trainer.py", line 645, in _fit_impl
    self._run(model, ckpt_path=self.ckpt_path)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/trainer/trainer.py", line 1098, in _run
    results = self._run_stage()
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/trainer/trainer.py", line 1177, in _run_stage
    self._run_train()
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/trainer/trainer.py", line 1200, in _run_train
    self.fit_loop.run()
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/loop.py", line 199, in run
    self.advance(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/fit_loop.py", line 267, in advance
    self._outputs = self.epoch_loop.run(self._data_fetcher)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/loop.py", line 199, in run
    self.advance(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/epoch/training_epoch_loop.py", line 214, in advance
    batch_output = self.batch_loop.run(kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/loop.py", line 199, in run
    self.advance(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/batch/training_batch_loop.py", line 88, in advance
    outputs = self.optimizer_loop.run(optimizers, kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/loop.py", line 199, in run
    self.advance(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/optimization/optimizer_loop.py", line 200, in advance
    result = self._run_optimization(kwargs, self._optimizers[self.optim_progress.optimizer_position])
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/optimization/optimizer_loop.py", line 247, in _run_optimization
    self._optimizer_step(optimizer, opt_idx, kwargs.get("batch_idx", 0), closure)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/optimization/optimizer_loop.py", line 357, in _optimizer_step
    self.trainer._call_lightning_module_hook(
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/trainer/trainer.py", line 1342, in _call_lightning_module_hook
    output = fn(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/nanodet/trainer/task.py", line 281, in optimizer_step
    optimizer.step(closure=optimizer_closure)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/core/optimizer.py", line 169, in step
    step_output = self._strategy.optimizer_step(self._optimizer, self._optimizer_idx, closure, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/strategies/strategy.py", line 234, in optimizer_step
    return self.precision_plugin.optimizer_step(
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/plugins/precision/precision_plugin.py", line 121, in optimizer_step
    return optimizer.step(closure=closure, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/torch/optim/lr_scheduler.py", line 68, in wrapper
    return wrapped(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/torch/optim/optimizer.py", line 140, in wrapper
    out = func(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/torch/autograd/grad_mode.py", line 27, in decorate_context
    return func(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/torch/optim/adamw.py", line 120, in step
    loss = closure()
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/plugins/precision/precision_plugin.py", line 107, in _wrap_closure
    closure_result = closure()
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/optimization/optimizer_loop.py", line 147, in __call__
    self._result = self.closure(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/optimization/optimizer_loop.py", line 133, in closure
    step_output = self._step_fn()
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/loops/optimization/optimizer_loop.py", line 406, in _training_step
    training_step_output = self.trainer._call_strategy_hook("training_step", *kwargs.values())
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/trainer/trainer.py", line 1480, in _call_strategy_hook
    output = fn(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/pytorch_lightning/strategies/strategy.py", line 378, in training_step
    return self.model.training_step(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/nanodet/trainer/task.py", line 78, in training_step
    preds, loss, loss_states = self.model.forward_train(batch)
  File "/home/mosminin/dev/nanodet/nanodet/model/arch/nanodet_plus.py", line 56, in forward_train
    loss, loss_states = self.head.loss(head_out, gt_meta, aux_preds=aux_head_out)
  File "/home/mosminin/dev/nanodet/nanodet/model/head/nanodet_plus_head.py", line 198, in loss
    batch_assign_res = multi_apply(
  File "/home/mosminin/dev/nanodet/nanodet/util/misc.py", line 24, in multi_apply
    return tuple(map(list, zip(*map_results)))
  File "/home/mosminin/dev/nanodet/.venv/lib/python3.9/site-packages/torch/autograd/grad_mode.py", line 27, in decorate_context
    return func(*args, **kwargs)
  File "/home/mosminin/dev/nanodet/nanodet/model/head/nanodet_plus_head.py", line 314, in target_assign_single_img
    assign_result = self.assigner.assign(
  File "/home/mosminin/dev/nanodet/nanodet/model/head/assigner/dsl_assigner.py", line 86, in assign
    F.one_hot(gt_labels.to(torch.int64), pred_scores.shape[-1])
RuntimeError: Class values must be smaller than num_classes.

What am I doing wrong?

Hey, I'm not too familiar with machine learning and the like, and I'm not exactly ready to spend the next 2 months (yet) learning how tensor-flow works and such, so I'm hoping someone can assist me with this.

So far, my experience with nanodet has been great; but, manually annotating images takes a lot of time which I don't have; because I don't really need the bounding box information anyway, I assumed I'd seek for a way to only give the center of objects rather than the top left and bottom right corners.

Help would be highly appreciated 😄

def image_preprocess(img_path): img = cv2.imread(img_path).astype("float32")/255 # mean = [103.53, 116.28, 123.675] # Image net values # std = [57.375, 57.12, 58.395] mean = [113.533554, 118.14172, 123.63607] std = [21.405144, 21.405144, 21.405144] mean = np.array(mean, dtype=np.float32).reshape(1, 1, 3) / 255 std = np.array(std, dtype=np.float32).reshape(1, 1, 3) / 255 img = (img - mean) / std img = np.transpose(img, (2, 0, 1)) img = np.expand_dims(img, axis=0) return img

def test_onnx_model(onnx_model,img_path=None): if img_path is None: img_path = "path for img" imgdata = image_preprocess(img_path) sess = rt.InferenceSession(onnx_model) input_name = sess.get_inputs()[0].name output_detect_name = sess.get_outputs()[0].name pred_onnx0= sess.run([output_detect_name], {input_name: imgdata}) print("outputs:") print(np.array(pred_onnx0))

There were a couple of issues when trying to use fp16 training. For one was that it was not exposed through the configuration system. The other was that the DynamicSoftLabelAssigner used binary_cross_entropy instead of binary_cross_entropy_with_logits. This changes where sigmoid is called on the predictions so that the more stable binary_cross_entropy_with_logits can be used and the Trainer can be configured to use fp16 precision.