| # defect-detection-yjplx-fxobh-amdi > 2025-03-13 9:51am | |
| https://universe.roboflow.com/rf-100-vl/defect-detection-yjplx-fxobh-amdi-0660v | |
| Provided by a Roboflow user | |
| License: MIT | |
| # Overview | |
| - [Introduction](#introduction) | |
| - [Object Classes](#object-classes) | |
| - [Defective Fishplate](#defective-fishplate) | |
| - [Fastener](#fastener) | |
| - [Missing Fastener](#missing-fastener) | |
| - [Non Defective Fishplate](#non-defective-fishplate) | |
| # Introduction | |
| The dataset is focused on detecting defects in railway infrastructure. It includes images for identifying and classifying rail components into four categories: Defective Fishplate, Fastener, Missing Fastener, and Non Defective Fishplate. Each class is detailed below, highlighting the distinctive elements to consider for accurate annotation. | |
| - **Defective Fishplate**: A flat piece of metal that joins two railway tracks that has visible damage or missing bolts. | |
| - **Fastener**: A clamp that secures the rail to the railroad ties. | |
| - **Missing Fastener**: A missing clamp that secures the rail to the railroad tie. | |
| - **Non-Defective Fishplate**: A flat piece of metal that joins two railway tracks that does not have visible damage. | |
| # Object Classes | |
| ## Defective Fishplate | |
| ### Description | |
| A fishplate is a flat piece of metal used to join two lengths of railway track. A defective fishplate often has visible damage, misalignment, or missing connectors. | |
| ### Instructions | |
| - Annotate the fishplate that shows signs of damage or misalignment. | |
| - Include any visible deformations or cracks in your annotation. | |
| - Do not annotate if the fishplate appears intact and undamaged. | |
| ## Fastener | |
| ### Description | |
| Fasteners secure the rail to the railroad ties. They typically appear as small, noticeable clamps or clips attached directly to the rail. | |
| ### Instructions | |
| - Annotate where the fasteners are present and properly securing the rail. | |
| - Ensure that the annotated area includes the entire fastener and its attachment to the rail. | |
| - Do not annotate areas where fasteners are missing or not visible. | |
| ## Missing Fastener | |
| ### Description | |
| This class describes the absence of fasteners where they should be present along the rail. | |
| ### Instructions | |
| - Identify and annotate areas on the rail where fasteners are supposed to be but are missing. | |
| - Look for gaps between the rail and the ties where fasteners should be present. | |
| - Do not annotate if there is an existing fastener correctly placed. | |
| ## Non Defective Fishplate | |
| ### Description | |
| A non defective fishplate is a properly aligned and undamaged connector joining two rails. | |
| ### Instructions | |
| - Annotate fishplates that are intact, with no signs of damage or displacement. | |
| - Ensure the annotation covers the entire fishplate, including bolts and connections. | |
| - Do not annotate if there are any visible defects or misalignments. |