Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog....
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Transcript of Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog....
![Page 1: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/1.jpg)
Large-Scale, Real-World Face Recognition in Movie Trailers
Week 2-3Alan Wright
(Facial Recog. pictures taken from Enrique Gortez)
![Page 2: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/2.jpg)
Preliminary Steps
• Extract Facial Tracks- Working on MATLAB code now
• Worked on detecting blurry images, no solid results.
• Extract the features from the facial tracks.• Build framework to load and test data.• Begin with baseline testing (Sparse, min, meant,
etc)• Algorithm development…
![Page 3: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/3.jpg)
Blur Detection
• Canny Edge Detection• Hough transform• Hough Lines• Find perpendicular line• Using that perpendicular line, get two parallel
lines on each side of the Hough line. • Choose 10 points on each side to find the
gradient.
![Page 4: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/4.jpg)
Hough Lines
![Page 5: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/5.jpg)
Using Perpendicular lines
![Page 6: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/6.jpg)
Gradient Points
![Page 7: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/7.jpg)
Good Edge
Mean
Inte
nsity
Pixels 1 - 20 (10 on each side of the Hough Line)
![Page 8: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/8.jpg)
Bad Edge
![Page 9: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/9.jpg)
Results
• Bad Hough Lines
• Dataset is not ideal for this algorithm, but works well on larger photos.
![Page 10: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/10.jpg)
Facial Recognition
![Page 11: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/11.jpg)
Linear Combination
+ x2 + x3
+ x4 + x5 + x6
+ x7 + x8 + x9
Test Image
= x1
Training Images
![Page 12: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/12.jpg)
Linear Combination
y
Testing
A=
=
Training
x
Coefficients
![Page 13: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/13.jpg)
Now in videos…
• We have:
Instead of:
![Page 14: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/14.jpg)
Baseline
![Page 15: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/15.jpg)
Sparse Representation-based Classification (SRC)
+ x2 + x3
+ x4 + x5 + x6
+ x7 + x8 + x9
Test Image
= x1
Training Images
+ 0 + 0 + 0
+ 0 + 0 + 0
![Page 16: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/16.jpg)
SRCSparse
Linear
![Page 17: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/17.jpg)
SRC
• Method– Impose sparsity on coefficient vector
• We want to minimize the coefficient sum to enforce sparsity.
(Wright09)
Minimize coef.
![Page 18: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/18.jpg)
Possible Baseline Algorithms
• Sum up the coefficient vector and take: average, min, etc..
• SRC linear combination.• Then creating our own algorithm…
![Page 19: Large-Scale, Real-World Face Recognition in Movie Trailers Week 2-3 Alan Wright (Facial Recog. pictures taken from Enrique Gortez)](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d0a5503460f949dce97/html5/thumbnails/19.jpg)
Related Papers Read
• “Face Tracking and Recognition with Visual Constraints in Real-World Videos”– Project Page
• “Large Scale Learning and Recognition of Faces in Web Videos”