I have a 2D image (obtained using computed tomography) that I'm "transforming" for image segmentation purposes, and I'm looking for a formal way of describing the transformation I'm doing.
The transformation I'm doing defines a centre point $(x_0,y_0)$, angles $\theta_i$ from 0 to 360 degrees, and a set of centrifugal lines defined by $x_0 + L\cos(\theta_i)$, $y_0 + L\sin(\theta_i)$. For simplicity, we can imagine that the original image is circular and thus $L$ is simply the radius of the circle.
The result of the transform is simply the 2D "stacking" of the intensity function $I(x,y)$ on each line defined above. This is essentially "unrolling" a circular image into a 2D image.
It looks superficially similar to the Radon transform, but there's not integral involved - I'm simply copying the intensity values.
Does this have a formal name?