In a classification task for scene elements, how should a street sign be labeled?

In a classification task for scene elements, how should a street sign be labeled?

• A. Ground
• B. Object
• C. Hazard
• D. Unknown

Answer: (A)

In scene element labeling, you distinguish between the surfaces that form the base of the scene and the discrete items that sit on or move within it. A street sign is a discrete, identifiable item with its own boundaries, not a part of the ground surface. The correct label is the object category because the sign is a tangible entity in the scene, separate from the ground plane (like the road or sidewalk). It isn’t inherently a hazard just by existing, and you wouldn’t mark it as unknown if you can recognize what it is. If the dataset allows it, you could annotate the sign as a separate object (and possibly the pole as another object), but at the simplest level, it falls under object.

In scene element labeling, you distinguish between the surfaces that form the base of the scene and the discrete items that sit on or move within it. A street sign is a discrete, identifiable item with its own boundaries, not a part of the ground surface. The correct label is the object category because the sign is a tangible entity in the scene, separate from the ground plane (like the road or sidewalk). It isn’t inherently a hazard just by existing, and you wouldn’t mark it as unknown if you can recognize what it is. If the dataset allows it, you could annotate the sign as a separate object (and possibly the pole as another object), but at the simplest level, it falls under object.