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Exam Review 3-Dec-15 Ranjay Krishna Exam Review Ranjay Krishna

Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

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Page 1: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Exam ReviewRanjay Krishna

Page 2: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Basic Exam Facts

Page 3: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Exam2015.12.073:30pm-6:30pmMudd Chemistry Building LEC

Note: one single-sided 8.5x11" sheet of notes is allowed in the final.

Page 4: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

15 True False Questions (30 minutes)

15 Multiple Choice Questions (30 minutes)

4 Short Answer Questions with 4 sub parts each. (90 minutes)

Exam Layout

Page 5: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Recognizing Faces and Objects

Page 6: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 7: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 8: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 9: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 10: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 11: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 12: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 13: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 14: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

K = 1 K = 3

Overfitting vs. Underfitting

Page 15: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Decision Boundaries

Page 16: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Other Issues• Dimension of features• Normalization?• Size of training dataset

Page 17: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 18: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Target Variance• More data• Regularize

Target Bias??

Page 19: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 20: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 21: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 22: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 23: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 24: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 25: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 26: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 27: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 28: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Regions of Images, and Segmentation

Page 29: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Segmentation

Page 30: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 31: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 32: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 33: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 34: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 35: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

You should be able to understand the clusters formed would be different with different definitions of what a cluster means.

Page 36: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 37: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

K-means Issues• How do you pick the number of clusters?• How do you prevent a bad local minima?• How do you choose what features to use?

Color or location or maybe something else?

Page 38: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 39: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 40: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 41: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 42: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 43: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 44: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Pixels and Features

Page 45: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Convolution

Page 46: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Convolution

Page 47: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Moving Average

Page 48: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Thresholding

Page 49: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Linear Systems

Page 50: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 51: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Cross Correlation

Page 52: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 53: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 54: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Edge DetectionHow does Canny Edge Detector work?

Page 55: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 56: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 57: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 58: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Image Matching

Page 59: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Image Matching

Page 60: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 61: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Harris Detector

Page 62: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

SIFTScale Invariant

Page 63: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Camera

Page 64: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 65: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 66: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 67: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 68: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 69: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 70: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Page 71: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Future Research

Page 72: Exam Review - Stanford Computer Vision Labvision.stanford.edu/.../lectures/exam_overview.pdf · 2015. 12. 3. · Ranjay Krishna Exam Review 3-Dec-15 Exam 2015.12.07 3:30pm-6:30pm

Exam Review 3-Dec-15Ranjay Krishna

Self Driving CarsEmail Juan Carlos to get involved.