One way to reduce the number of wrongful convictions is to reduce the number of convictions. We have 5% of the world's population and 25% of the world's prisoners. Assuming we could struggle by with as many prioners per capita as the rest of the world, we could reduce our wrongful conviction numbers by 80%. Instead of having around 200,000 people wrongfully imprisoned, we would have "only" 40,000 people wrongfully imprisoned.
I don't claim to have all the solutions. I do, however, want to talk about the magnitude of the numbers. They are appalling and a national embarrassment. I also want to listen to what others have to say. Consider if you will, this 7 minute video by someone who has put some thought into the matter.