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大小: 6.62MB文件类型: .rar金币: 1下载: 0 次发布日期: 2023-09-24
- 语言: Matlab
- 标签: Matlab 高光谱 IndianaPines
资源简介
我班牛人用产生式算法(GDA)原理编写的Matlab代码,最后生成把地物分成200类后的图片,并且上色,很直观。
代码片段和文件信息
close all;clear;clc;
load IndianaPines.mat;
tic
[vardataAmount]=size(pixels);
TotalLabel = length(unique(Label));
labels=[];
%divide Train and Test set
while (length(labels)~=TotalLabel)
choose = logical(round(rand(1dataAmount)));
trainSet = pixels(:choose);
trainLabel = Label(choose);
testSet = pixels(:~choose);
testLabel = Label(~choose);
labels = unique(trainLabel);
end
%calcuate paramter
phi = zeros(1TotalLabel);
miu = zeros(varTotalLabel);
trainAmount = length(trainLabel);
testAmount = length(testLabel);
for i=1:TotalLabel
c = (trainLabel==labels(i));
phi(i)=sum(c)/trainAmount;
miu(:i)=mean(trainSet(:c)2);
end
delta = trainSet - miu(:trainLabel+1);
siginv = inv(delta*delta‘/trainAmount);
%recognize
p = zeros(1TotalLabel);
recogLabel = testLabel;
logPhi = log(phi);
for i=1:testAmount
x = testSet(:i)*ones(1TotalLabel)-miu;
p = logPhi - 0.5*sum(x.*(siginv*x));
[maxPmaxI] = max(p);
recogLabel(i) = uint8(maxI-1);
end
%show answer
recogAmount = sum(recogLabel==testLabel);
mistakes = zeros(TotalLabelTotalLabel);
for i=1:testAmount
if recogLabel(i)~=testLabel(i)
mistakes(testLabel(i)+1recogLabel(i)+1)=1;
end
end
fprintf(‘Being classificated wrong\n‘);
for i=1:TotalLabel
fprintf(‘the class %d was wrongly classified to‘i-1);
fprintf(‘%3d‘labels(logical(mistakes(i:))));
fprintf(‘\n‘);
end
fprintf(‘\n‘);
fprintf(‘\n‘);
fprintf(‘the correct recognizition rate: %d/%d=%f%%\n‘recogAmounttestAmountrecogAmount/testAmount*100);
toc;
colorMap = rand(TotalLabel3);
colorMap(1:)=0;
img = zeros(145145);
img(:) = Label;
subplot 121;
imshow(imgcolorMap);
title(‘original image‘);
img(~choose)= recogLabel;
subplot 122;
imshow(imgcolorMap);
title(‘recognized image‘);
%free memory
clear c choose dataAmount delta i labels logPhi maxP miu;
clear p phi siginv recogAmount var x TotalLabel maxI testAmount trainAmount;
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 2004 2012-06-30 00:00 GDA产生式算法matlab代码(带高光谱文件)\GDA.m
文件 6940656 2012-05-15 23:53 GDA产生式算法matlab代码(带高光谱文件)\IndianaPines.mat
目录 0 2012-09-06 09:04 GDA产生式算法matlab代码(带高光谱文件)
----------- --------- ---------- ----- ----
6942660 3
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