Improving image sensor in GoPro Hero3

Hello,

I'm new here.

I was just wondering if I could improve the image sensor of my GoPro Hero3 'cause when filming at low light moments when I check it on the computer appears a lot of noise and also some type of light stripes that I understand are from the image sensor.

So I've done some internet search, and all what I've found is to replace the image sensor for another of the same type. Nobody knows if it's possible to change for a better one with more less same characteristics?

Thank you!