How to display DoG filtering result with imagej-ops correctly?

After apply the DoG filter, if one display the result directly, the result isn’t correct. Because the pixel type of the DoG filtering is signed 32 bit floating numbers, so I think maybe some normalization and clipping will be need, but I don’t know how to do this in imagej-ops.

final Dataset image = ij.scifio().datasetIO().open(imgURL);
ij.ui().show("image", image);
Img<FloatType> converted = 
      ij.op().convert().float32((IterableInterval<FloatType>) image.getImgPlus());

Img<FloatType> dog = 
     (Img<FloatType>)ij.op().filter().dog(converted, 1.25, 1.25);
ij.ui().show("DoG", dog);


My fault: I should set the two sigmas as different values:
Img dog = (Img)ij.op().filter().dog(converted, 1.0, 1.25);