Yep, the THS8200 does not have a scaler. But if you still need to resize your image, you can check following method on image resizing within a VB.NET image process project. If you are a developer, you know, we seldomly use such THS8200 to process image, there are many free trial image resizing and other image editing tool we can learn from.
PublicSharedFunction ApplyResize(img As REImage, width AsInteger, height AsInteger) AsInteger
End Function