function?regionList?=?chooseRegions（?storage?num_regions?im?）
%
%?regionList?=?chooseRegions（?storage?num_regions?）
%
%?PURPOSE:
%
%?Cull?out?regions?that?are?not?maximally?stable.??Return?regions?that?are
%?most?likely?to?give?us?good?matches.
%
%?INPUT:
%
%?im??????????-?Grayscale?image.
%?num_regions?-?Number?of?regions?over?the?entire?image.
%?storage?????-?Storage?structure?with?an?entry?for?each?intensity?level?of?image.
%???????????????Fields?associated?with?each?intensity?level?are:
%??????????????????storage（intensityLevel）.pixels?
%??????????????????storage（intensityLevel）.region_labels?
%??????????????????storage（intensityLevel）.areas?
%???????????????“pixels“?stores?a?representative?pixel?for?each?region?at?the
%????????????????????????given?intensity?level.?（Just?the?first?one?in?that
%????????????????????????region.）
%???????????????“region_labels“?stores?the?number?label?for?each?region?at?the?given
%????????????????????????intensity?level.
%???????????????“areas“??stores?the?number?of?pixels?associated?with?each?region
%????????????????????????at?the?given?intensity?level.
%
%?OUTPUT:?
%
%?regionList??-?N?x?2?list?of?regions?chosen?from?the?storage?structure.
%???????????????The?first?column?holds?the?region?label?number?of?a?chosen
%???????????????region?and?the?second?column?holds?the?threshold?for?the?region.
%

imageHeight?=?size（im1）;
imageWidth?=?size（im2）;

minLifespan???=?round（0.10?*?length（storage））;???????%?must?exist?over?at?least?10?percent?of?intensities
minSize???????=?15;??????????????????????????????????%?minimum?area?in?pixels
maxSize???????=?round（（imageHeight*imageWidth）/40）;??%?maximum?area?in?pixels
maxDeriv??????=?7;???????????????????????????????????%?maximum?change?in?size?we‘ll?consider?to?be?flat
minStableTime?=?round（0.05?*?length（storage））;???????%?must?be?flat?over?at?least?5?percent?of?intensities
maxAxisRatio??=?10;

%?Create?a?list?of?all?regions?over?all?intensity?levels.
%?Store?the?size?of?each?region?at?each?intensity?level.

regionList?=?zeros（num_regions1+length（storage））;
for?k=1:num_regions
????regionList（k1）?=?-k;??%?store?group?number?at?head?（storing?as?negative?allows?later?ops?to?ignore?it）
end

for?k=1:length（storage）?%?1?to?maxIntensity+1
????fprintf（‘Processing?regions?for?intensity:?%d?\n‘?k-1）;
????
????region_labels?=?storage（k）.region_labels;
????region_labels?=?region_labels（?find（region_labels>0）?）;????????%?ignore?background?group...
????for?g?=?1:length（region_labels）?
????????regionList（region_labels（g）1+k）?=?storage（k）.areas（g+1）;??%?...and?offset?for?background??
????end????????
end

disp（?‘?‘?）;
fprintf（‘Master?region?list?has?%d?entries.\n‘?num_regions）;

%?image（regionList（:2:end））;
%?pause;

%?Cull?out?regions?that?existed?at?fewer?than?N?intensities.

lifespans?=?[];
for?k=1:num_regions
????lifespans（k）?=?length（find（regionList（k:）?>?0））;
end
regionList?=?regionList（find（lifespans?>?minLifespan）?:）;
num_regions?=?size（regionList1）;

disp（?‘?‘?）;
fprintf

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????97261??2012-11-19?11:38??MSER\11.jpg

?????文件?????119371??2012-11-19?11:38??MSER\12.jpg

?????文件???????5976??2007-03-05?10:44??MSER\chooseRegions.m

?????文件???????4207??2007-03-05?10:44??MSER\computeRegions.m

?????文件???????3429??2007-03-05?10:29??MSER\corner_detector.m

?????文件????????521??2007-03-05?10:29??MSER\displayMatchedRegions.m

?????文件????????380??2007-03-05?10:29??MSER\displayRegions.m

?????文件???????2829??2007-03-05?10:44??MSER\drawEllipse.m

?????文件????????763??2007-03-05?10:44??MSER\drawMatchedCorners.m

?????文件???????1947??2007-03-05?10:44??MSER\drawMatchedRegions.m

?????文件???????1113??2007-03-05?10:46??MSER\drawRegion.m

?????文件??????10289??2007-03-05?10:46??MSER\fit_ellipse.m

?????文件????????305??2007-03-05?10:20??MSER\getRegions.m

?????文件????????164??2007-03-05?10:46??MSER\loadimages.m

?????文件????????191??2007-03-05?10:46??MSER\makeStorageStructure.m

?????文件???????2750??2007-03-05?10:46??MSER\matchCorners.m

?????文件???????3811??2007-03-05?10:46??MSER\matchRegions.m

?????文件???????2300??2007-03-05?10:36??MSER\rectifyRegions.m

?????文件????????484??2007-03-05?10:34??MSER\regionMaxSize.m

?????文件????????255??2007-03-05?10:31??MSER\regionSlideshow.m

?????文件???????2678??2007-03-05?10:25??MSER\show.m

?????文件????????517??2007-03-05?10:25??MSER\warppatch.m

?????目錄??????????0??2012-11-19?13:46??MSER

-----------?---------??----------?-----??----

???????????????261541????????????????????23