Documentation for C-Werk 2.0.
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To ensure the correct recognition of personal protective equipment, the following image requirements must be met:
- The object to be detected (PPE) is clearly distinguishable by the human eye.
- Color image, not noisy and not distorted by compression algorithm artifacts.
- Linear dimensions of PPE must not exceed 65% of the corresponding frame size.
- The duration of the object's visibility is at least 10−13 frames. The minimum number depends on the current task.
- There are no visible physical barriers between the camera lens and the analyzed object.
- Obscuring of a person and/or PPE by an obstruction and/or by another person, and/or cropping by frame boundaries must not exceed 25%.
The minimum height of the equipment on body areas in pixels is observed:
Vest—at least 50 pixels.
Helmet/Hood—at least 20 pixels.
Gloves—at least 20 pixels.
- PPE must have a standard look and shape, and have the following colors:
- Vest: green, yellow, orange.
- Helmet/Hood: white, yellow, orange, red, blue, green.
- Gloves: white, gray, black.
The minimum value of pixel density per meter is observed:
Image resolution
Minimum pixel density per meter (ratio of the object height in pixels to the object height in meters)
Minimum object height in pixels 1920x1080 60 100 1280x720 60 100 640x360 60 100
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