Break down a sentence into few simple sentences

I am having the following construction.

In regularization of outer-boundaries, outer-boundary line segments fitted from irregularly distributed contour points as described by Horde and Susan (2012) are rectified by rotating their mid-points until orthogonality or parallelism is met with respect to the identified direction.

But, I have been advised to break them in to simple sentences.

Now, my question is what would be the most beautiful way to represent whole idea by few simple sentences.

Here is my try. But I feel my way is not the best way and looking for some advanced way.

In regularization of outer-boundaries, boundary line segments can be first fitted from irregularly distributed contour points as described by Horde and Susan (2012).

The fitted line segments can then be rectified by rotating their mid-points until orthogonality or parallelism is met with respect to the identified direction.

Answer

Your sentences look fine to me. One possible way to make the reading smoother is to move the reference to the front or the back. For example,

As described by Horde and Susan (2012), in regularization of outer-boundaries, boundary line segments can be first fitted from irregularly distributed contour points, and then rectified by rotating their mid-points until orthogonality or parallelism is met with respect to the identified direction.

Here is another alternative,

As described by Horde and Susan (2012), in regularization of outer-boundaries, boundary line segments can be first fitted from irregularly distributed contour points. They can then be rectified by rotating their mid-points until orthogonality or parallelism is met with respect to the identified direction.