Attribute detection with Body Camera Analytics

In the Body Camera Analytics profile, IBM® Video Analytics runs several attribute detectors in response to each captured person.

Properties and attributes

The attribute detectors that are run depend on which parts of the person are detected.

Category Property Attributes
Person Properties Hairline Bald
Hat
Hair (any color)
Hair (blond)
Hair (black)
Glasses Eyeglasses
Sunglasses
No eyeglasses
Gender Male
Female
Age Young
Middle-aged
Old
Facial hair Facial hair
No facial hair
Torso Clothing Other print
Plaid print
Solid color
Solid color with logo
Striped print
Backpack Yes
No
Color 1
Color 2
Color 3
13-color palette
Head Colors Color 1
Color 2
Color 3
13-color palette

Confidence scores

Each attribute that is detected is assigned a confidence score, which is a measure of the probability that the person has the attribute. For example, if the attribute is Male: 0% means a low probability that the person is male; 100% means a high probability that the person is male. Torso color is assigned multiple scores based on a palette of 13 colors.

When the property is age, the attributes, Old, Middle Aged, and Young are measured in relation to 50 years old. The confidence score is based on the predicted age. When you click View details, the value that is displayed indicates the predicted age. The usual range is approximately 10 - 80 years old.

Ranking

Ranking shows all the results in ranked order, unless you select advanced mode for filtering and limit the number of results by filtering. As a filter on the ranked result, you can select not to display results below a certain threshold.

For example, when you select Young results are sorted by age in ascending order, the youngest people appear in the list first. The youngest person who is detected is in the first position and the oldest person is in the last position. Similarly, when you select Old results are sorted by age in descending order, the oldest people appear in the list first. Middle-aged is defined as the absolute distance from 50 and the results are ordered by the difference between the predicted age and 50.

Parent topic:
Retrieving and searching video