How do I change the figure resize interpolation method?

I am displaying an image with

img = imread('cameraman.tif');
imshow(img);

but when I manually change the size of the figure (by dragging on the bottom right corner of the figure), it appears that the image is resized with nearest-neighbor interpolation. For some of my images, this produces a very poor quality result. Instead, I would like to use bicubic interpolation as I would if using the imresize function. How do I change the interpolation method when changing the figure size via dragging the bottom right corner?

For reference, I use MATLAB version 8.6.0 (R2015b).