some questions about GeneratePerturbations function

[wqz960]

HI ! Thanks for your codes! But i am confused in the GeneratePerturbation function. I am poor in math , can you provide me some information or paper to let me know how the perturbation generate？ I have seen the other issue before, but the link is broken, can you provide it again! Thank you very much!

[wqz960]

especially for bestfit function. Thank you !!!

[MarekKowalski]

Hi,

The bestfit function uses the method described in Appendix D of Introduction to Active ShapeModels.
The GeneratePerturbation function randomly samples translation, rotation and scaling and applies those transformations to a copy of initShape. Once that is done, the image is transformed so that the ground truth shape matches the transformed initShape.

Thanks to this, for each image we obtain a wide variety of different initializations.

Thanks,

Marek