---
title: "SetAlpha.AlphaSource Property "
canonical: https://www.graphicsmill.com/docs/gm/P_Aurigma_GraphicsMill_Transforms_SetAlpha_AlphaSource.htm
product: "Graphics Mill"
---

# SetAlpha.AlphaSource Property 
 
Gets or sets a pipeline producing a grayscale image to initialize alpha channel with.
 
**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 Pipeline AlphaSource { get; set; }
```
 
### Property Value
A grayscale image to initialize alpha channel with. It should have the same dimensions and color depth as the source image.
   
## See Also

### Reference

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