tag:blogger.com,1999:blog-37324607.post5974504500467806389..comments2023-11-03T08:31:23.698-04:00Comments on Data Mining in MATLAB: MATLAB Image BasicsWill Dwinnellhttp://www.blogger.com/profile/03379859054257561952noreply@blogger.comBlogger14125tag:blogger.com,1999:blog-37324607.post-28930978016032266352011-07-03T14:10:27.727-04:002011-07-03T14:10:27.727-04:00hi Mr. Dwinnell,
I am working on an imaging proc...hi Mr. Dwinnell, <br /><br />I am working on an imaging processing problem and i am trying to detect (unperfect) squares of material deposited on a surface.<br /> the way I see the steps needed to image processing is as follow:<br />1- load the image<br />2- try to do edge detection to draw squares around my irregular shapes (they are supposed to be squares of known dimensions)<br />3- ounce the edge are contoured or drawn, I think I should try to fill the shape <br />4 Locate the centroid of the squares and store their x and y in a matrix<br /><br />Could you please comment and help with the needed Matlab functions (and their order) to do the above. i can send you the piece of code I wrote so far to clean up the image and maybe a sample of the images i am working with.I guess a lot is still to be done and any comment you can give will be highly appreciated<br /><br />thanksMislhttps://www.blogger.com/profile/14961094521257465626noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-6250451277450318672010-08-22T16:51:21.878-04:002010-08-22T16:51:21.878-04:00For some basic intro to Image processing in matlab...For some basic intro to Image processing in matlab visit:<br /><br /><a rel="nofollow">www.technopush.blogspot.com</a>Anonymoushttp://(optional)noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-51756621563807343662010-05-04T02:00:50.876-04:002010-05-04T02:00:50.876-04:00Sorry :)
do you have a matlab code for Genetic al...Sorry :) <br />do you have a matlab code for Genetic algorithm to optimize ANN. can you give an example in your blog. <br />Many Thanks :)Unknownhttps://www.blogger.com/profile/03287289950927402863noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-67655221564108393602010-05-04T01:57:36.507-04:002010-05-04T01:57:36.507-04:00Hello Will
do you matlab code for Genetic algorit...Hello Will <br />do you matlab code for Genetic algorithm to optimize ANN. can you give an example in your blog. <br />Many Thanks :)Unknownhttps://www.blogger.com/profile/03287289950927402863noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-20920580448699173472010-03-17T17:04:13.770-04:002010-03-17T17:04:13.770-04:00Thanks Will! yes you where right! problem sorted. ...Thanks Will! yes you where right! problem sorted. Once the principle components are found using PC = B * V in your example - how would I go about creating a loading plot of the diiferent PC's. Thank you very much for the posts.PAThttps://www.blogger.com/profile/05543618562337825289noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-68924563660976351362010-03-16T18:52:46.798-04:002010-03-16T18:52:46.798-04:00PAT, it sounds as though you have a MATLAB program...PAT, it sounds as though you have a MATLAB program called <i>std</i>, which conflicts with the name of the internal MATLAB function, <i>std</i>.Will Dwinnellhttps://www.blogger.com/profile/03379859054257561952noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-74407084917579031692010-03-16T17:46:22.009-04:002010-03-16T17:46:22.009-04:00Hi, thanks for you post. I have an issue when I tr...Hi, thanks for you post. I have an issue when I try and calclate the std dev:<br /><br />AStd = std(A)<br /><br />it is giving me this error:<br /><br />??? Attempt to execute SCRIPT std as a function.<br /><br />ThanksPAThttps://www.blogger.com/profile/05543618562337825289noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-83435683132181708942009-08-31T18:52:38.059-04:002009-08-31T18:52:38.059-04:00Wow, nice - to be honest, I'd never even heard...Wow, nice - to be honest, I'd never even heard of MATLAB, but I think you've sparked my interest now!<br /><br />And PS - thanks for the blog comment; I apologise if I came across as attacking of religions, that wasn't my intend.Unknownhttps://www.blogger.com/profile/12446855556275711172noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-86846578952046369932009-05-19T09:54:00.000-04:002009-05-19T09:54:00.000-04:00Amaracchia,
Take a look at this document from the...Amaracchia,<br /><br />Take a look at this document from the MathWorks support website:<br /><br />http://www.mathworks.com/support/solutions/en/data/1-15S83/<br /><br />The bottom of the bar plot is at y = 0, which can't be drawn on a log scale (unless you have an infinitely tall monitor.) That document talks about how to adjust the plot to take that into account.Steve Lnoreply@blogger.comtag:blogger.com,1999:blog-37324607.post-64681373160972053332009-04-17T21:28:00.000-04:002009-04-17T21:28:00.000-04:00Thank you for commenting on my blog!Thank you for commenting on my blog!runiteking1https://www.blogger.com/profile/00804819954326072892noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-82198127890303721562009-04-09T15:42:00.000-04:002009-04-09T15:42:00.000-04:00Dear Mr Dwinnell, i'm an italian student and i fou...Dear Mr Dwinnell, i'm an italian student and i found your blog searching infos in google.<BR/>I'm looking for a solution to a trivial matter in Matlab that is driving me crazy.<BR/><BR/>I need to change an histogram's y axes from a linear scale to a logarithmic one; but when the scale is changed, my histogram change his aspect, because mATLAB displays only non log(0) points.<BR/>How can i solve this problem?<BR/><BR/>I haven't found any response searching in the blog.<BR/>I'm sorry for my silly question, but maybe you can help me, this blog is so helpful for other matters.<BR/><BR/>Thank you so much.Amaracchiahttps://www.blogger.com/profile/11621697459580172181noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-85800041947883742092009-04-06T04:36:00.000-04:002009-04-06T04:36:00.000-04:00Nice to see people getting interested in images! T...Nice to see people getting interested in images! Thanks for writing this introduction, I'm sure it'll be useful to many.Cris Luengohttp://www.cb.uu.se/~cris/blog/noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-78934423997993942052009-04-05T06:19:00.000-04:002009-04-05T06:19:00.000-04:00Yes, and many common manipulations of images (ligh...Yes, and many common manipulations of images (lightening, darkening, binarizing, etc.) are quite easy to code in MATLAB.Will Dwinnellhttps://www.blogger.com/profile/03379859054257561952noreply@blogger.comtag:blogger.com,1999:blog-37324607.post-26695372213651934052009-04-05T03:41:00.000-04:002009-04-05T03:41:00.000-04:00I remember the imread function! MATLAB makes image...I remember the imread function! MATLAB makes image processing so much easier, since the underlying image data becomes arrays and matrices.Vincenthttp://polymathprogrammer.comnoreply@blogger.com