MATLAB特征点的检测与提取（2）

2，基于点特征匹配的杂乱场景目标检测

第一步：读入图片；

wahaha1 = imread('wahaha.jpg');
wahaha=rgb2gray(wahaha1);
scenceImage = imread('scence.jpg');
sceneImage=rgb2gray(scenceImage);

第二步：检测特征点；

boxPoints = detectSURFFeatures(wahaha);
scenePoints = detectSURFFeatures(sceneImage);

figure; 
imshow(wahaha);
title('100 Strongest Feature Points from wahaha Image');
hold on;
plot(selectStrongest(boxPoints, 100));

figure; 
imshow(sceneImage);
title('300 Strongest Feature Points from Scene Image');
hold on;
plot(selectStrongest(scenePoints, 300));

第三步：提取特征描述子；

boxPairs = matchFeatures(boxFeatures, sceneFeatures);