For descending vowel thing, finding the minima in the histogram doesn't seem to be working as well as expected.
Sometimes, there doesn't exist a minima. Since, there are only a few descending vowels, like उ, ऊ and रे कार, can't
we just do a simple template matching for the lower part of the alphabet. Might be computationally intensive, but
it might work.
--
"You aren't remembered for doing what is expected of you."