Is it "possible"? - Sure. Anything is possible. (People have been injecting everything you can think of in the noses for well over 100 years including silicone grease and candle wax...)
Will it bring about a straight line smoothing of your hump ? - Probably not.
Putting fillers along the nasal dorsum was meant to mask small irregularities and give the illusion of a straight nasal dorsum with SMALL depression. It was never meant and can never hope to successfully deal with nasal "humps".
If your goal is a complete correction of your nose, consult with a few nose surgeons and hear what they have to say to you. If you hear the same comments repeated - you should probably heed them.
Traditionally, a nasal hump is made from the nasal bones the the upper lateral cartilages. When the hump is removed, the roof of the nose is thereby removed. To do so, the side walls need to be moved to the center and at the top pushed against one another. This is done by breaking the nose along its walls. This is a VERY effective surgical technique and if you admire the starlet above's result - you should really consider it.