HW1 FAQ

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CS223B Homework 1 Wiki

This wiki is for questions related to CS223B. We ask that you refrain from giving away answers, but otherwise feel free to post questions and suggestions.

Orthorectification

This question seems to be giving people the most trouble on homework 1.

  • We do not ask for the rectified image, we only ask for a matrix which defines a rectifying 2D projective transform.
  • You do not need to automate the entire process. If user input is part of determining the matrix, that is completely fine.

Custom Transform

You really are free to do whatever you want here. This is an opportunity for those with the time and inclination to explore something to do so. For those who have less graphics/Matlab experience, feel free to come up with a relatively simple transform.

  • You do need to provide several example images (not just the bike image), and the result of running them through your transform.
  • The custom transformation does not have to be a linear operation, it can be just any function that does something interesting.

Misc. Questions

  • bike.jpg and channel.png are two different versions of the same image.

Unanswered Questions

  • To the person who last put a question here: re-read the homework question carefully.
  • Is the main goal of the Custom Image Transform problem is to familiarize us with creating .m files and being able to create function? If that is the case, then I am assuming any simple transformation should be acceptable, right?
  • Add a question here!