vehicle-license-plate-detection-barrier-0106

Use Case and High-level Description

This is a MobileNetV2 + SSD-based vehicle and (Chinese) license plate detector for the "Barrier" use case.

Example

vehicle-license-plate-detection-barrier-0106.jpeg

Specification

Metric Value
Mean Average Precision (mAP) 98.62
AP vehicles 98.03
AP plates 99.21
Car pose Front facing cars
Min plate width 96 pixels
Max objects to detect 200
GFlops 0.349
MParams 0.634
Source framework TensorFlow*

Average Precision (AP) is defined as an area under the precision/recall curve. Validation dataset is BIT-Vehicle.

Performance

Link to performance table

Inputs

  1. name: "input" , shape: [1x3x300x300] - An input image in the format [BxCxHxW], where:

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

    Expected color order is BGR.

Outputs

  1. The net outputs a blob with the shape: [1, 1, N, 7], where N is the number of detected bounding boxes. For each detection, the description has the format: [image_id, label, conf, x_min, y_min, x_max, y_max]
    • image_id - ID of the image in the batch
    • label - predicted class ID
    • 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

[*] Other names and brands may be claimed as the property of others. [*] Other names and brands may be claimed as the property of others.