Motion Field and Optical Flow

April 10, 2007

Suggested Reading:

Horn Chapter 12

Plane

1. Homework 5 is online ( Six problems from the textbook and it is due on the last day of the class).

2. Coding Assignment 3 (on stereo) will be out on Sunday. This time I will make sure that the assignment won’t take more than two days to complete.

3. Today, we will finish Chapter 11 and start chapter 12.

4. On Thursday, we will cover some extra materials related to motion field.

Motion field

Whenever there is a relative motion between camera and the object, there are corresponding changes in the image.

Problem: Use these changes to recover the relative motions as well as the shapes of the objects.

Motion fields and Optical Flows

Examples of motion fields

Apparent motion of brightness patternsBrightness Constancy Assumption