Use Case and High-Level Description

Face detector based on MobileNetV2 as a backbone with a single SSD head for indoor/outdoor scenes shot by a front-facing camera. The single SSD head from 1/16 scale feature map has nine clustered prior boxes.



Metric Value
AP (WIDER) 84.52%
GFlops 0.982
MParams 1.021
Source framework PyTorch*

Average Precision (AP) is defined as an area under the precision/recall curve. All numbers were evaluated by taking into account only faces bigger than 60 x 60 pixels.


Image, name: input, shape: 1, 3, 300, 300 in the format B, C, H, W, where:

  • B - batch size
  • C - number of channels
  • H - image height
  • W - image width

Expected color order: BGR.


The net outputs blob with shape: 1, 1, 200, 7 in the format 1, 1, N, 7, where N is the number of detected bounding boxes. Each detection has the format [image_id, label, conf, x_min, y_min, x_max, y_max], where:

  • image_id - ID of the image in the batch
  • label - predicted class ID (1 - face)
  • conf - confidence for the predicted class
  • (x_min, y_min) - coordinates of the top left bounding box corner
  • (x_max, y_max) - coordinates of the bottom right bounding box corner

Legal Information

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