# wheel-defect-detection-e53jb-38chk-ytwg > 2025-03-13 8:06am
https://universe.roboflow.com/rf-100-vl/wheel-defect-detection-e53jb-38chk-ytwg

Provided by a Roboflow user
License: MIT

# Overview
- [Introduction](#introduction)
- [Object Classes](#object-classes)
  - [Cracks-Scratches](#cracks-scratches)
  - [Discoloration](#discoloration)
  - [Shelling](#shelling)
  - [Wheel](#wheel)

# Introduction
This dataset is designed to detect and analyze defects in wheels. It includes four main classes to help identify potential issues that could affect performance and safety.

Classes:
- **Cracks-Scratches**: Visible lines or marks on the wheel that indicate damage.
- **Discoloration**: Areas where the wheel surface shows abnormal color changes.
- **Shelling**: Parts of the wheel surface that appear pitted or hollowed out.
- **Wheel**: The entire wheel structure.

# Object Classes

## Cracks-Scratches
### Description
Lines or seams that appear on the wheel’s surface, often consistent and sometimes deep or shallow.

### Instructions
- Annotate visible lines and marks that trace across the wheel’s surface.
- The annotations should capture the full extent of each line.
- Do not include smudges or dirt that do not have defined linear shapes.

## Discoloration
### Description
Patches or areas on the wheel where the color differs from the rest of the material, indicating potential corrosion or fading.

### Instructions
- Focus on areas where the color noticeably changes, usually darker or lighter than the surrounding region.
- Exclude regions where lighting changes cause temporary shadows or highlights.

## Shelling
### Description
Areas on the wheel surface that are hollowed or indented, resembling small craters or pits.

### Instructions
- Outline regions that appear to be missing material, forming depressions on the wheel.
- Avoid marking areas that are merely dirty or have surface residue but are not structurally hollowed.

## Wheel
### Description
The entire circular structure, including spokes and hubs, typically made of metal or alloy.

### Instructions
- Locate and enclose the entire wheel, ensuring that the edges of the wheel are precisely defined.
- Include all visible parts of the wheel, but do not extend the annotation over occluding objects such as nearby parts or machinery.