https://github.com/alyssaq/face_morpher

https://github.com/wuhuikai/FaceSwap

https://github.com/oflynned/Snapchat-Filter

http://life-in-a-monospace-typeface.tumblr.com/post/28495219189/quick-and-dirty-automatic-face-replacement-with

Image Morphing - local (non-parametric) warp
http://alumni.media.mit.edu/~maov/classes/comp_photo_vision08f/lect/07_Image%20Morphing.pdf

https://github.com/arturoc/FaceSubstitution
https://github.com/jorticus/face-replace

https://github.com/t0nyren/piecewiseAffine

https://github.com/royshil/HeadReplacement

https://github.com/trishume/faceHack

https://github.com/marsbroshok/face-replace

https://github.com/junyanz/FaceDemo

https://github.com/matthewearl/faceswap

http://home.elka.pw.edu.pl/%7Emkowals6/doku.php

https://github.com/takiyu/CLM

https://github.com/mc-jesus/FaceSwap

https://matthewearl.github.io/2015/07/28/switching-eds-with-python/

https://github.com/MarekKowalski/FaceSwap

http://alumni.media.mit.edu/~roys/identitytransfer-cgaieee2012/

https://github.com/HVisionSensing/FaceFlip

https://github.com/liaojing/Image-Morphing/tree/master/code

https://github.com/blendmaster/rigid-faces

https://github.com/vdumoulin/morphing_faces

https://github.com/hrastnik/FaceSwap

https://github.com/spmallick/learnopencv/tree/master/FaceMorph
https://github.com/spmallick/learnopencv/tree/master/FaceSwap

https://github.com/menpo/lsfm

https://github.com/DevendraPratapYadav/FaceMorphing

https://github.com/cxcxcxcx/imgwarp-opencv

https://github.com/Guikunzhi/BeautifyFaceDemo

Image alignment
https://github.com/cheind/image-align

Papers:
http://people.csail.mit.edu/sumner/research/deftransfer/Sumner2004DTF.pdf
http://www-ui.is.s.u-tokyo.ac.jp/~takeo/papers/rigid.pdf

3D
https://github.com/KeeganRen/FaceReconstruction
https://github.com/anhttran/3dmm_cnn
http://www.openu.ac.il/home/hassner/projects/poses/
https://github.com/menpo/lsfm

Video:
https://github.com/YuvalNirkin/face_video_segment

#Deep learning
https://github.com/iperov/DeepFaceLab
https://github.com/deepfakes/faceswap
https://github.com/datitran/face2face-demo
https://github.com/YuvalNirkin/face_swap
https://github.com/ddtm/deep-smile-warp
https://github.com/msracver/Deep-Image-Analogy
https://github.com/datitran/face2face-demo
https://github.com/ZZUTK/Face-Aging-CAAE
https://github.com/zo7/deconvfaces
https://github.com/tkarras/progressive_growing_of_gans
http://www.openu.ac.il/home/hassner/projects/CNN3DMM/
https://github.com/shaoanlu/faceswap-GAN
https://github.com/quolc/neural-collage
https://github.com/aerophile/awesome-deepfakes
https://github.com/YadiraF/PRNet