Home > categories > Rubber & Plastics > Rubber Sheets > Rollerblading to ice skating?
Question:

Rollerblading to ice skating?

Would being good at rollerblading (most likely) make for good ice skating, not counting spins and jumps? I'm interested in figure skating and can do some fun things on rollerblades, like whatever you call a gliding arabesque.

Answer:

cute video, and you can do this yourself with a program like Morpheus.
Dashop Corp at 8 Elizabeth St, New York, NY 10013. Sell a few handball gloves, and ace balls. Just ask at the counter
Morphing like this is pretty simple, at least in theory. It can take some effort to write the software, but not a huge amount as long as you understand interpolation. The basic idea would be to select some points in common between the two images. The eyes would be important. Essentially you want to migrate those points from their stating location in one image to a destination point in the other image, and do so smoothly. I'd suggest thinking of the image as a rubber sheet with the face painted on it. Deform a set of points on that sheet, and the rest of the sheet will deform with them. This deformation can be done using a finite element scheme, which will allow you to interpolate the image pixels. And we need to do the deformation parametrically, as a function of time. I.e., we start out with one image, that of George washington, and gradually deform it to the shape of the face of John Adams. At the same time as we do the deformation, also do a simple linear interpolation between the pixels of the two images. Start out with entirely George, then gradually mix in some of John Adams as a linear combination. At the end, you have 100% of John. In the end what we see is a smooth mapping from one image to a second image, and then to a third image, etc.

Share to: