| Line 20: | Line 20: | ||
;'''Q: My image looks really dark after correction. | ;'''Q: My image looks really dark after correction. | ||
:A - Make sure you have both nullification and correction set correctly. | :A - Make sure you have both nullification and correction set correctly. | ||
| + | |||
| + | ;'''Q: In problem 3, I checked the "stretch" function in matlab help, but I did not find it. I got "stretchlim" from matlab help. How can I stretch the region [T1, T2] of the input to the region [1, 254] of the output? | ||
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Revision as of 16:09, 8 February 2013
Discussion for Lab 4
Additional Information
Before you jump into the lab, there is actually a difference for the monitors everyone is using. To ensure consistent result throughout the lab, I would suggest using the same monitor while doing calibrations!
Basic knowledge for gamma correction
- http://en.wikipedia.org/wiki/Gamma_correction
- http://www.siggraph.org/education/materials/HyperGraph/color/gamma_correction/gamma_intro.html
- http://en.wikipedia.org/wiki/Brightness
Extended information for something to do when you are bored
Fun experiment to do on your monitor(s)
Q&A Section
- Q: My image looks really dark after correction.
- A - Make sure you have both nullification and correction set correctly.
- Q: In problem 3, I checked the "stretch" function in matlab help, but I did not find it. I got "stretchlim" from matlab help. How can I stretch the region [T1, T2] of the input to the region [1, 254] of the output?
