---
title: "ContiguousBackgroundRemoval.DetailThreshold Property "
canonical: https://www.graphicsmill.com/docs/gm/P_Aurigma_GraphicsMill_Transforms_ContiguousBackgroundRemoval_DetailThreshold.htm
product: "Graphics Mill"
---

# ContiguousBackgroundRemoval.DetailThreshold Property 
 
Gets or sets the color difference that returns a thin detail from the background to the subject.
 
**Namespace:** [Aurigma.GraphicsMill.Transforms](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Transforms.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```csharp
public float DetailThreshold { get; set; }
```
 
### Property Value
The difference as delta E, in range `[0, 200]`. The default value is `20`. The value `0` turns this check off.
 
## Remarks
 The background is found on a slightly blurred copy of the image, so that noise does not make the edge ragged. The blur can make a hairline look like background. So each background pixel is also compared with the background around it. If the difference is larger than this value, the pixel becomes a part of the subject again.
 
## Exceptions
  
|  Exception |  Condition |
| --- | --- |
 |  System.ArgumentOutOfRangeException |  The value is out of range. |
   
## See Also

### Reference

- [ContiguousBackgroundRemoval Class](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Transforms_ContiguousBackgroundRemoval.htm.md)
- [Aurigma.GraphicsMill.Transforms Namespace](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Transforms.htm.md)