If they're frozen, then I'd say there's no chance.
But if you have green perfect tomatoes, I'll tell you a little story
I kept those marble-size to maybe pecan nut size green tomatoes, along with breaking color ones and full-sized green ones, when the frost came around and it was time to strip the tomato plants. I had them in paper lined cardboard boxes, colanders, etc.
Today, I discovered another colander of tomatoes that I'd totally forgotten about. These USED TO BE the tiny hard green ones that I never expected to color up. After picking out the bad ones, I was left with some perfect little tomato raisins (Principe Borgheses) as well as Sugar Plums and the volunteer Cherries. All 1/2 to 1/3 normal size, and orange-red, some feeling much lighter than they should be.
I parboiled a handful of them, then sauteed in oil until the skins split and the tomatoes popped, and was surprised to see what looked like alfalfa sprouts when I started crushing them. Some of them had sprouted seeds inside!
So apparently, they CAN ripen from green and hard to the point of growing viable seeds. Some of them were cluster tomatoes and might have drawn the needed nutrients from their sibs. Whether these seeds are as good as the seeds in tomatoes ripened under the peak growing conditions is another question.