Would like to use different scales with HOG people detection

I think the default scaling for OpenCV's HOG implementation is 1.05 raised to some power, where that power is a value from 1 to nlevels(which is 64) . I'd like to skip the lower scales (1.05^1 - 1.05^13) and start at 1.05^14. I know I can enter 1.05^14 into detectMultiScale as the value for scale0, but then HOG would use powers of 1.05^14 rather than 1.05. How can I use the HOG implementation such that I use scales 1.05^14 - 1.05^54, thereby skipping the lower scales? Thanks, --jkutchk