---
title: "TransformsProvider.Minimum Method "
canonical: https://www.graphicsmill.com/docs/gm/M_Aurigma_GraphicsMill_TransformsProvider_Minimum_1_e1836fc4.htm
product: "Graphics Mill"
---

# TransformsProvider.Minimum Method 
 
Applies a minimum filter (also known as dilation) to the bitmap.
 
**Namespace:** [Aurigma.GraphicsMill](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```csharp
public void Minimum(int radius
)
```
 
### Parameters
 
 - radius
     - Type: System.Int32
The radius of the filter in pixels.
 
## Remarks
  
Minimum filter is a non-linear filter which works in the following way: for each pixel it searches pixel with minimum brightness in "running window" of the radius specified with *radius* parameter. This pixel is copied to the result bitmap.
 
That's why if you apply this filter on the image with has black objects on white background (for example text), they will be *dilated*.
   
## See Also

### Reference

- [TransformsProvider Class](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_TransformsProvider.htm.md)
- [Aurigma.GraphicsMill Namespace](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill.htm.md)