- Ellyn Sanger (Geneseo alum in math grad school at Buffalo) re
applying to and being in grad school
- Today (Oct. 3), 4pm
- South 328
- First hour exam
- Friday, Oct. 10
- Material since beginning of semester (e.g., basic expressions, vectors, matrices, plotting, scripts)
- 3 - 5 short-answer questions
- Whole class period
- Open book, notes, computer; closed person
- Section 13.2 (images)
- Image processing color maps, etc?
- Functions
imreadimageimwrite
- Representing true-color images
- 3-dimensional matrix/array of color intensities
- 3-dimensional matrix/array of color intensities
- Section 3.7 (functions)
- Calling functions, making your own
- In “m scripts” - files ending in “.m” e.g., like any other script
- Make function and use in script or command window
- Name can be any legal Matlab name, even a name already used by Matlab (e.g., “plot”) -- bad idea!
- Format
function output = function_name( inputs ) … output = … end - Differences from scripts?
- Can provide inputs on command line
- Output can be used in other expressions
- Local variables
- “Green screen” aka chroma key effect
- Warnings
- Nothing will work as well in practice as it does in theory
- There will thus be lots of little incidental things you have to code in this project to cope with reality (esp type issues)
- There will probably be some image processing you can’t do (yet) in Matlab (e.g., scaling images)
- Get some subject and background pictures (i.e., problem examples)
- Plan an algorithm
- Warnings
- Plan and start coding algorithms