TAL `min_memory` argument, precommit, Docker fixes (#836)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Jaap van de Loosdrecht <jaap@vdlmv.nl>

.pre-commit-config.yaml

@@ -37,7 +37,7 @@ repos:
   #     - id: isort
   #       name: Sort imports
 
-  - repo: https://github.com/pre-commit/mirrors-yapf
+  - repo: https://github.com/google/yapf
     rev: v0.32.0
     hooks:
       - id: yapf
@@ -54,7 +54,7 @@ repos:
         # exclude: "README.md|README.zh-CN.md|CONTRIBUTING.md"
 
   - repo: https://github.com/PyCQA/flake8
-    rev: 5.0.4
+    rev: 6.0.0
     hooks:
       - id: flake8
         name: PEP8

docker/Dockerfile-arm64

@@ -27,7 +27,7 @@ RUN git clone https://github.com/ultralytics/ultralytics /usr/src/ultralytics
 COPY requirements.txt .
 RUN python3 -m pip install --upgrade pip wheel
 RUN pip install --no-cache ultralytics albumentations gsutil notebook \
-    coremltools onnx onnx-simplifier onnxruntime openvino-dev>=2022.3
+    coremltools onnx onnxruntime
     # tensorflow-aarch64 tensorflowjs \
 
 # Cleanup

ultralytics/yolo/cfg/default.yaml

@@ -29,6 +29,7 @@ rect: False  # support rectangular training if mode='train', support rectangular
 cos_lr: False  # use cosine learning rate scheduler
 close_mosaic: 10  # disable mosaic augmentation for final 10 epochs
 resume: False  # resume training from last checkpoint
+min_memory: False  # minimize memory footprint loss function, choices=[False, True, <roll_out_thr>]
 # Segmentation
 overlap_mask: True  # masks should overlap during training (segment train only)
 mask_ratio: 4  # mask downsample ratio (segment train only)

ultralytics/yolo/engine/exporter.py

@@ -82,13 +82,19 @@ MACOS = platform.system() == 'Darwin'  # macOS environment
 
 def export_formats():
     # YOLOv8 export formats
-    x = [['PyTorch', '-', '.pt', True, True], ['TorchScript', 'torchscript', '.torchscript', True, True],
-         ['ONNX', 'onnx', '.onnx', True, True], ['OpenVINO', 'openvino', '_openvino_model', True, False],
-         ['TensorRT', 'engine', '.engine', False, True], ['CoreML', 'coreml', '.mlmodel', True, False],
+    x = [
+        ['PyTorch', '-', '.pt', True, True],
+        ['TorchScript', 'torchscript', '.torchscript', True, True],
+        ['ONNX', 'onnx', '.onnx', True, True],
+        ['OpenVINO', 'openvino', '_openvino_model', True, False],
+        ['TensorRT', 'engine', '.engine', False, True],
+        ['CoreML', 'coreml', '.mlmodel', True, False],
         ['TensorFlow SavedModel', 'saved_model', '_saved_model', True, True],
-         ['TensorFlow GraphDef', 'pb', '.pb', True, True], ['TensorFlow Lite', 'tflite', '.tflite', True, False],
+        ['TensorFlow GraphDef', 'pb', '.pb', True, True],
+        ['TensorFlow Lite', 'tflite', '.tflite', True, False],
         ['TensorFlow Edge TPU', 'edgetpu', '_edgetpu.tflite', False, False],
-         ['TensorFlow.js', 'tfjs', '_web_model', False, False], ['PaddlePaddle', 'paddle', '_paddle_model', True, True]]
+        ['TensorFlow.js', 'tfjs', '_web_model', False, False],
+        ['PaddlePaddle', 'paddle', '_paddle_model', True, True],]
     return pd.DataFrame(x, columns=['Format', 'Argument', 'Suffix', 'CPU', 'GPU'])
 
 
@@ -138,9 +144,12 @@ class Exporter:
         self.run_callbacks("on_export_start")
         t = time.time()
         format = self.args.format.lower()  # to lowercase
+        if format in {'tensorrt', 'trt'}:  # engine aliases
+            format = 'engine'
         fmts = tuple(export_formats()['Argument'][1:])  # available export formats
         flags = [x == format for x in fmts]
-        assert sum(flags), f'ERROR: Invalid format={format}, valid formats are {fmts}'
+        if sum(flags) != 1:
+            raise ValueError(f"Invalid export format='{format}'. Valid formats are {fmts}")
         jit, onnx, xml, engine, coreml, saved_model, pb, tflite, edgetpu, tfjs, paddle = flags  # export booleans
 
         # Load PyTorch model

ultralytics/yolo/utils/tal.py

@@ -10,7 +10,7 @@ from .metrics import bbox_iou
 TORCH_1_10 = check_version(torch.__version__, '1.10.0')
 
 
-def select_candidates_in_gts(xy_centers, gt_bboxes, eps=1e-9):
+def select_candidates_in_gts(xy_centers, gt_bboxes, eps=1e-9, roll_out=False):
     """select the positive anchor center in gt
 
     Args:
@@ -21,6 +21,14 @@ def select_candidates_in_gts(xy_centers, gt_bboxes, eps=1e-9):
     """
     n_anchors = xy_centers.shape[0]
     bs, n_boxes, _ = gt_bboxes.shape
+    if roll_out:
+        bbox_deltas = torch.empty((bs, n_boxes, n_anchors), device=gt_bboxes.device)
+        for b in range(bs):
+            lt, rb = gt_bboxes[b].view(-1, 1, 4).chunk(2, 2)  # left-top, right-bottom
+            bbox_deltas[b] = torch.cat((xy_centers[None] - lt, rb - xy_centers[None]),
+                                       dim=2).view(n_boxes, n_anchors, -1).amin(2).gt_(eps)
+        return bbox_deltas
+    else:
         lt, rb = gt_bboxes.view(-1, 1, 4).chunk(2, 2)  # left-top, right-bottom
         bbox_deltas = torch.cat((xy_centers[None] - lt, rb - xy_centers[None]), dim=2).view(bs, n_boxes, n_anchors, -1)
         # return (bbox_deltas.min(3)[0] > eps).to(gt_bboxes.dtype)
@@ -55,7 +63,7 @@ def select_highest_overlaps(mask_pos, overlaps, n_max_boxes):
 
 class TaskAlignedAssigner(nn.Module):
 
-    def __init__(self, topk=13, num_classes=80, alpha=1.0, beta=6.0, eps=1e-9):
+    def __init__(self, topk=13, num_classes=80, alpha=1.0, beta=6.0, eps=1e-9, roll_out_thr=0):
         super().__init__()
         self.topk = topk
         self.num_classes = num_classes
@@ -63,6 +71,7 @@ class TaskAlignedAssigner(nn.Module):
         self.alpha = alpha
         self.beta = beta
         self.eps = eps
+        self.roll_out_thr = roll_out_thr
 
     @torch.no_grad()
     def forward(self, pd_scores, pd_bboxes, anc_points, gt_labels, gt_bboxes, mask_gt):
@@ -84,6 +93,7 @@ class TaskAlignedAssigner(nn.Module):
         """
         self.bs = pd_scores.size(0)
         self.n_max_boxes = gt_bboxes.size(1)
+        self.roll_out = self.n_max_boxes > self.roll_out_thr if self.roll_out_thr else False
 
         if self.n_max_boxes == 0:
             device = gt_bboxes.device
@@ -112,7 +122,7 @@ class TaskAlignedAssigner(nn.Module):
         # get anchor_align metric, (b, max_num_obj, h*w)
         align_metric, overlaps = self.get_box_metrics(pd_scores, pd_bboxes, gt_labels, gt_bboxes)
         # get in_gts mask, (b, max_num_obj, h*w)
-        mask_in_gts = select_candidates_in_gts(anc_points, gt_bboxes)
+        mask_in_gts = select_candidates_in_gts(anc_points, gt_bboxes, roll_out=self.roll_out)
         # get topk_metric mask, (b, max_num_obj, h*w)
         mask_topk = self.select_topk_candidates(align_metric * mask_in_gts,
                                                 topk_mask=mask_gt.repeat([1, 1, self.topk]).bool())
@@ -122,13 +132,26 @@ class TaskAlignedAssigner(nn.Module):
         return mask_pos, align_metric, overlaps
 
     def get_box_metrics(self, pd_scores, pd_bboxes, gt_labels, gt_bboxes):
+        if self.roll_out:
+            align_metric = torch.empty((self.bs, self.n_max_boxes, pd_scores.shape[1]), device=pd_scores.device)
+            overlaps = torch.empty((self.bs, self.n_max_boxes, pd_scores.shape[1]), device=pd_scores.device)
+            ind_0 = torch.empty(self.n_max_boxes, dtype=torch.long)
+            for b in range(self.bs):
+                ind_0[:], ind_2 = b, gt_labels[b].squeeze(-1).long()
+                # get the scores of each grid for each gt cls
+                bbox_scores = pd_scores[ind_0, :, ind_2]  # b, max_num_obj, h*w
+                overlaps[b] = bbox_iou(gt_bboxes[b].unsqueeze(1), pd_bboxes[b].unsqueeze(0), xywh=False,
+                                       CIoU=True).squeeze(2).clamp(0)
+                align_metric[b] = bbox_scores.pow(self.alpha) * overlaps[b].pow(self.beta)
+        else:
             ind = torch.zeros([2, self.bs, self.n_max_boxes], dtype=torch.long)  # 2, b, max_num_obj
             ind[0] = torch.arange(end=self.bs).view(-1, 1).repeat(1, self.n_max_boxes)  # b, max_num_obj
             ind[1] = gt_labels.long().squeeze(-1)  # b, max_num_obj
             # get the scores of each grid for each gt cls
             bbox_scores = pd_scores[ind[0], :, ind[1]]  # b, max_num_obj, h*w
 
-        overlaps = bbox_iou(gt_bboxes.unsqueeze(2), pd_bboxes.unsqueeze(1), xywh=False, CIoU=True).squeeze(3).clamp(0)
+            overlaps = bbox_iou(gt_bboxes.unsqueeze(2), pd_bboxes.unsqueeze(1), xywh=False,
+                                CIoU=True).squeeze(3).clamp(0)
             align_metric = bbox_scores.pow(self.alpha) * overlaps.pow(self.beta)
         return align_metric, overlaps
 
@@ -145,8 +168,13 @@ class TaskAlignedAssigner(nn.Module):
         if topk_mask is None:
             topk_mask = (topk_metrics.max(-1, keepdim=True) > self.eps).tile([1, 1, self.topk])
         # (b, max_num_obj, topk)
-        topk_idxs = torch.where(topk_mask, topk_idxs, 0)
+        topk_idxs[~topk_mask] = 0
         # (b, max_num_obj, topk, h*w) -> (b, max_num_obj, h*w)
+        if self.roll_out:
+            is_in_topk = torch.empty(metrics.shape, dtype=torch.long, device=metrics.device)
+            for b in range(len(topk_idxs)):
+                is_in_topk[b] = F.one_hot(topk_idxs[b], num_anchors).sum(-2)
+        else:
             is_in_topk = F.one_hot(topk_idxs, num_anchors).sum(-2)
         # filter invalid bboxes
         is_in_topk = torch.where(is_in_topk > 1, 0, is_in_topk)

ultralytics/yolo/v8/detect/train.py

@@ -40,7 +40,8 @@ class DetectionTrainer(BaseTrainer):
                                  prefix=colorstr(f'{mode}: '),
                                  shuffle=mode == "train",
                                  seed=self.args.seed)[0] if self.args.v5loader else \
-            build_dataloader(self.args, batch_size, img_path=dataset_path, stride=gs, rank=rank, mode=mode, rect=mode=="val")[0]
+            build_dataloader(self.args, batch_size, img_path=dataset_path, stride=gs, rank=rank, mode=mode,
+                             rect=mode == "val")[0]
 
     def preprocess_batch(self, batch):
         batch["img"] = batch["img"].to(self.device, non_blocking=True).float() / 255
@@ -121,7 +122,13 @@ class Loss:
         self.device = device
 
         self.use_dfl = m.reg_max > 1
-        self.assigner = TaskAlignedAssigner(topk=10, num_classes=self.nc, alpha=0.5, beta=6.0)
+        roll_out_thr = h.min_memory if h.min_memory > 1 else 64 if h.min_memory else 0  # 64 is default
+
+        self.assigner = TaskAlignedAssigner(topk=10,
+                                            num_classes=self.nc,
+                                            alpha=0.5,
+                                            beta=6.0,
+                                            roll_out_thr=roll_out_thr)
         self.bbox_loss = BboxLoss(m.reg_max - 1, use_dfl=self.use_dfl).to(device)
         self.proj = torch.arange(m.reg_max, dtype=torch.float, device=device)