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Groups > sci.image.processing > #4120
| From | Martin Leese <please@see.Web.for.e-mail.INVALID> |
|---|---|
| Newsgroups | sci.image.processing |
| Subject | Re: normalization image |
| Date | 2016-04-21 12:54 -0600 |
| Organization | A noiseless patient Spider |
| Message-ID | <nfb7fk$12h$1@dont-email.me> (permalink) |
| References | <73948fcb-66e3-44e3-8dea-0e17c21fdb3e@googlegroups.com> |
mhd62976@gmail.com wrote: > when we do normalization for image i.e r=R/(R+G+B) > some times in the pixel we get 0/0...then what shall we do > > ignor this pixel? or replace it by zero or replace this pixel by small number What would you like to do? Mathematically, 0/0 is undefined, so there is no correct way to handle it. What you do is whatever is best for your particular image data and your particular use of that data. Note that you can't use L'Hôpital's rule because you don't know in what direction to estimate the derivatives (assuming that derivatives even make sense for your particular image data). -- Regards, Martin Leese E-mail: please@see.Web.for.e-mail.INVALID Web: http://members.tripod.com/martin_leese/
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normalization image mhd62976@gmail.com - 2016-04-21 01:45 -0700 Re: normalization image Martin Leese <please@see.Web.for.e-mail.INVALID> - 2016-04-21 12:54 -0600
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