Mastering OpenCV with Practical Computer Vision Projects

Summary

In this chapter, we have discussed how active appearance models can be combined with the POSIT algorithm in order to obtain a 3D head pose. An overview on how to create, train, and manipulate AAMs has been given and the reader can use this background for any other field, such as medical, imaging, or industry. Besides dealing with AAMs, we got familiar to Delaunay subdivisions and learned how to use such an interesting structure as a triangulated mesh. We also showed how to perform texture mapping in the triangles using OpenCV functions. Another interesting topic was approached in AAM fitting. Although only the inverse compositional project-out algorithm was described, we could easily obtain the results of years of research by simply using ...