| ToGrayscale(IReadableBitmapData) | Returns a new IReadWriteBitmapData, which is the grayscale version of the specified bitmapData. |
| ToGrayscale(IReadableBitmapData, IAsyncContext) | Returns a new IReadWriteBitmapData, which is the grayscale version of the specified bitmapData, using a context that may belong to a higher level, possibly asynchronous operation. |
| ToGrayscale(IReadableBitmapData, ParallelConfig) | Returns a new IReadWriteBitmapData, which is the grayscale version of the specified bitmapData. |