他的回复:
Deep SORT —— Mask R-CNN 实例分割目标检测跟踪我稍微修改了mask_rcnn.py程序代码，训练模型时，会报下面的错误：Layer proposal_targets was called with an input that isn't a symbolic tensor. Received type: . Full input: [[], , truediv:0' shape=(?, ?, 4) dtype=float32>, ]. All inputs to the layer should be tensors.
