Parse sewing patterns

My name is Gatis. I like to sew and I have this idea I want to test. This is what I want to achieve: 1. Create a software which extracts pattern pieces from pdf as separate objects. 2. Then automatically creates right and left side pieces. *In sewing patterns each piece is typically put on a folded fabric and when you cut it you get 1 right side and 1 left (mirror) side piece of fabric. 3. Further unfolds the pieces according to common notations. *Some pieces are put on a folded fabric edge, so that when you cut it and unfold the fabric, you get single piece. 4. Then exports all pieces to individual pages in pdf document. 5. "Sews" all darts and pleats in all pieces. 6. Identifies edges that will be sewn together. 7. "Sews" together the pieces and creates a 3d object where all pieces are still visible and visually notated (so that we can see which piece is which in the 3d model) and the stitching lines can be seen. 8. Sews the remaining hemlines if present. 9. The 3d object should be accessible in a web page so we can rotate it and see various angles. To recap, I need to build a software which would do the steps 1-9 fully automatically. Here is a paper which describes several of the steps: [login to view URL] 4 pattern samples attached. The parser has to work with those samples, and it should be adaptable to ultimately any general sewing patterns.