I accidentally divided by 5 instead of 6 but that does not change the question
a=.328 364;127 478;159 1;328 363;327 365;328 362 6%~+/>a 266.167 322.167 NB. correct answer should be 328 363 a=.247 235;0 0;244 433;129 304;246 236;291 48 6%~+/>a 192.833 209.333 NB. correct answer should be 247 235 2007/3/15, Björn Helgason <[EMAIL PROTECTED]>:
Lets say I use different methods to find the point and the correct answer should be 328 363 Even if the majority are correct or close to it the mean may not be a good answer a=.328 364;127 478;159 1;328 363;327 365;328 362 5%~+/>a 319.4 386.6 Any suggestions to get a better approximation? 2007/3/15, Björn Helgason < [EMAIL PROTECTED]>: > > I am trying different sizes of the kern and different filters. > > I created a form to show the images and different filtering and various > results of finding the object. > I try it out with finding patterns equal to different numbers and > combinations of numbers as well as the actual kern without filter. > > It takes time to do the manual checking to see what settings give best > results and are accurate. > > > 2007/3/14, Oleg Kobchenko < [EMAIL PROTECTED] >: > > > > The listed image formats should not produce any > > difference since they all are lossless compressions. > > You can verify creating images in different formats, > > loading in J and then subtracting the values. > > > > Regarding image recognition, although the simple difference minimum > > method may work, it is not very stable and depends on > > accuracy of defining the kernel and the chosen threshold, > > which is different for every instance. > > > > It would be nice to see how other methods fair, > > such as cross-correlation, as listed by Devon McCormick > > > > http://www.jsoftware.com/pipermail/general/2007-March/029123.html > > > > You can go iteratively, tweaking a working algorithm > > with different ideas to see what's improving. > > For example, I like the idea of normalization (first link) > > http://www.owlnet.rice.edu/~elec431/projects96/pictomaniacs/previous.html > > <http://www.owlnet.rice.edu/%7Eelec431/projects96/pictomaniacs/previous.html> > > > > You can apply it to the method you use now to see if it will > > eliminate the mismatch. > > > > > > --- Bj�rn Helgason < [EMAIL PROTECTED]> wrote: > > > > > When extracting an image to work with from a Dicom file I have three > > options > > > > > > dcm2pnm - Convert DICOM images to PPM/PGM, PNG, TIFF or BMP > > > > > > +obt --write-24-bit-bmp > > > write 24-bit truecolor BMP > > > > > > +ot --write-tiff > > > write 8-bit (monochrome) or 24-bit (color) TIFF > > > > > > +on --write-png > > > write 8-bit (monochrome) or 24-bit (color) PNG > > > > > > > > > I have up to now used bmp and am reasonably happy with the results. > > > > > > I am wondering if the other forms TIFF or PNG would give me better > > results. > > > Would I need different technique to find the object I am looking for > > in the > > > image? > > > > > > The method Oleg sent in earlier finds the object most of the time in > > the BMP > > > images. > > > Actually only found one image so far where it missed the object and > > gave > > > another fairly similar looking location. > > > > > > > > > > ____________________________________________________________________________________ > > > > We won't tell. Get more on shows you hate to love > > (and love to hate): Yahoo! TV's Guilty Pleasures list. > > http://tv.yahoo.com/collections/265 > > ---------------------------------------------------------------------- > > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > -- > Björn Helgason, Verkfræðingur > Fugl&Fiskur ehf, Þerneyjarsund 23, Box 127 > 801 Grímsnes ,t-póst: [EMAIL PROTECTED] > Skype: gosiminn, gsm: +3546985532 > Landslags og skrúðgarðagerð, gröfuþjónusta > http://groups.google.com/group/J-Programming > > > Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari > einfaldleikans > > góður kennari getur stigið á tær án þess að glansinn fari af skónum > /|_ .-----------------------------------. > ,' .\ / | Með léttri lund verður | > ,--' _,' | Dagurinn í dag | > / / | Enn betri en gærdagurinn | > ( -. | `-----------------------------------' > | ) | (\_ _/) > (`-. '--.) (='.'=) > `. )----' (")_(") > -- Björn Helgason, Verkfræðingur Fugl&Fiskur ehf, Þerneyjarsund 23, Box 127 801 Grímsnes ,t-póst: [EMAIL PROTECTED] Skype: gosiminn, gsm: +3546985532 Landslags og skrúðgarðagerð, gröfuþjónusta http://groups.google.com/group/J-Programming Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans góður kennari getur stigið á tær án þess að glansinn fari af skónum /|_ .-----------------------------------. ,' .\ / | Með léttri lund verður | ,--' _,' | Dagurinn í dag | / / | Enn betri en gærdagurinn | ( -. | `-----------------------------------' | ) | (\_ _/) (`-. '--.) (='.'=) `. )----' (")_(")
-- Björn Helgason, Verkfræðingur Fugl&Fiskur ehf, Þerneyjarsund 23, Box 127 801 Grímsnes ,t-póst: [EMAIL PROTECTED] Skype: gosiminn, gsm: +3546985532 Landslags og skrúðgarðagerð, gröfuþjónusta http://groups.google.com/group/J-Programming Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans góður kennari getur stigið á tær án þess að glansinn fari af skónum /|_ .-----------------------------------. ,' .\ / | Með léttri lund verður | ,--' _,' | Dagurinn í dag | / / | Enn betri en gærdagurinn | ( -. | `-----------------------------------' | ) | (\_ _/) (`-. '--.) (='.'=) `. )----' (")_(")
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