CSE 559A: Computer Vision (Fall 2017)

 [credit: http://danjodon.deviantart.com/] This course introduces the fundamentals of designing computer vision systems: that can "look at" images and videos and reason about the physical objects and scenes they represent. We will learn about methods for image restoration and enhancement; for estimating color, shape, geometry, and motion from images; and for image segmentation, recognition, and classification. The focus of the course will be on the mathematical tools and intuition underlying these methods: models for the physics and geometry of image formation, and statistical and machine learning-based techniques for inference.

Prerequisites

No prior knowledge of computer vision, image processing, or graphics is required. The following skills are necessary for the class:

1. Math: Linear algebra, vector calculus, and probability.
2. Programming: The problem sets will have programming questions in python with numpy/scipy. You should have experience writing complex programs, using data structures, etc. You don't need prior experience with python itself, but should be willing to put in the time to pick it up . We will help with pointers, starter code for the problem sets, and support.

Additionally, prior experience with signal processing and machine learning will be helpful (but isn't necessary).

• Five Problem Sets (15% x5) = 75%
• Final Project: Writeup & Presentation = 25%
• Extra Credit: Class Participation = 5% (in class, on Piazza)

Late Policy: All problem sets are due by 11:59 pm of the due date (although we don't suggest waiting till then to submit). You get three "late days" total for the course. Beyond that, you will lose 25% for each day a submission is late (this is quantized to days: anything that is submitted between 1 minute and 24 hours after the due date will be penalized 25%). Late penalties will not be reflected in the initial grade for each set, but will be applied at the end of the term after factoring in the late days (in a way that maximizes your points).

Collaboration Policy: All problem sets, and the final project, are expected to be completed individually. All code and written work you submit must be your own. Discussion about course topics with your classmates is encouraged (in person, and on the course discussion forum), but remember:

1. Do not share your code for any of the problem sets with anyone (to help them or to seek help).
2. Do not use external libraries or code shared online in any of the problem sets. It is fine to search online for general numpy/python help, but not for specific solutions to the questions. Better yet, ask the course staff instead !
3. Do not carry away any written notes, pictures of a whiteboard, or examples of code away from a discussion session. And do something else for an hour before going back to the problem set. Make sure you aren't solving the problem set from memory.
4. In every problem set you turn in, acknowledge all sources of assistance, as well as names of classmates you had a discussion with.
5. You may use external resources (including code) for the final project when appropriate, provided these sources are properly acknowledged.

Textbooks

There are no required textbooks for the course. The following are useful for reference:

1. Computer Vision: Algorithms and Applications by Richard Szeliski. (Follow the link for a free online copy)
2. Computer Vision: A Modern Approach by David Forsyth and Jean Ponce.

Syllabus (tentative)

Problem sets, proposals, and reports are due at 11:59 PM (Central) on the dates indicated.
Week Tuesday Thursday
1 Aug 29

Introduction. Cameras & Image Formation I.

[Slides] [PDF] [PDF/4]

Aug 31

Image Formation II. Per-pixel Image Ops. Convolutions I.

[Slides] [PDF] [PDF/4]

2 Sep 5

Convolutions II. Edge & line detection. Other spatial image ops.

[Slides] [PDF] [PDF/4]

Sep 7

Fourier Transforms & Convolution Theorem.

[Slides] [PDF] [PDF/4]

3 Sep 12 `PS1 Out`

Scale & Multi-scale Representations. Efficient Convolutions. Image Restoration.

[Slides] [PDF] [PDF/4]

Sep 14

Image Restoration II. Optimization.

[Slides] [PDF] [PDF/4]

4 Sep 19

Color, spectrum, and illumination.

[Slides] [PDF] [PDF/4]

Sep 21

Material & Shading: Lambertian, specular, BRDFs.

[Slides] [PDF] [PDF/4]

5 Sep 26 `PS1 Due! PS2 Out.`

Light Sources. Photometric Stereo.

[Slides] [PDF] [PDF/4]

Sep 28

Photometric Reasoning Roundup. Camera Projection & Geometry.

[Slides] [PDF] [PDF/4]

6 Oct 3

Geometry II.

[Slides] [PDF] [PDF/4]

Oct 5

Robust Fitting. RANSAC.

[Slides] [PDF] [PDF/4]

7 Oct 10 `PS2 Due! PS3 Out.`

Camera Calibration. Multi-view.

[Slides] [PDF] [PDF/4]

Oct 12

Multi-view. Stereo Matching.

[Slides] [PDF] [PDF/4]

8 Oct 17

Fall Break: No class.

Oct 19

Stereo Globalization.

[Slides] [PDF] [PDF/4]

9 Oct 24

Globalization II.

[Slides] [PDF] [PDF/4]

Oct 26 `PS3 Due!`

Stereo Roundup.

[Slides] [PDF] [PDF/4]

10 Oct 31 `Project Proposals Due! PS4 Out.`

Optical Flow. Segmentation & Grouping.

[Slides] [PDF] [PDF/4]

Nov 2

Grouping Roundup. ML Recap I.

[Slides] [PDF] [PDF/4]

11 Nov 7

Machine Learning II.

[Slides] [PDF] [PDF/4]

Nov 9

Logistic Regression, Gradient Descent & SGD/Momentum.

[Slides] [PDF] [PDF/4]

12 Nov 14 `PS4 Due! PS5 Out.`

[Slides] [PDF] [PDF/4]

Nov 16

[Slides] [PDF] [PDF/4]

13 Nov 21

[Slides] [PDF] [PDF/4]

Nov 23

Thanksgiving Break: No class.

14 Nov 28

Network Architectures II. Batch-norm.

[Slides] [PDF] [PDF/4]

Nov 30 `PS5 Due on 12/1!`

Assorted Topics.

[Slides] [PDF] [PDF/4]

15 Dec 5 `Slides Due on 12/3!`

Project Presentations.

[Presentation Order]

Dec 7 `Project Final Reports Due 12/10!`

Project Presentations.

[Presentation Order]

Acknowledgments

The slides, syllabus, and problem sets are based on excellent computer vision courses taught elsewhere by Todd Zickler, Bill Freeman, Svetlana Lazebnik, James Hays, Alyosha Efros, Subhransu Maji, and many many others.