In the feature reader there doesn't appear to be a way of setting all values outside of an image to nodata whilst performing GCP transformations. I'm using a geotiff within a featurereader to read mapinfo projected tiff files.
However, the resulting image (they are old maps so need to be re projected) should have a border of no data where the image is no long square. However, the feature reader fills this space with 0's not nodata. Is there a way of making the featurereader asign no data values during affine transformations?