端端舝

C++ / OpenCV ⻌嬡 03
倱掛湮悝﹛綸ㄗITSㄘ旃噶弅
D1﹛枘掛敪祩
2014/09/17

std::vector及妏中源
? Vector反饜蹈心凶中卅手及
? �腔卞復悵仄化仁木月及匹﹜猁匼杅互帤眭及午五
晞瞳
? Push﹜Pop允月及匹﹜C晟惤及旦正永弁心凶中
? 失弁本旦﹜戊疋奈﹜袚樓﹜祅壺卅升互㜭
? 中欠氏卅倰及饜蹈﹛cv::Point﹜cv::Mat卅升

? 哫晟
? std::vector <倰> 劐杅1
? 倰劐杅2
肮元倰
? 跡慮
? 劐杅1.push_back(劐杅2)
? 桶尨
???
2
1
? �統桽 Iterator
? 眻諉失弁本旦﹛劐杅靡.at(猁匼杅)﹜劐杅靡[猁匼杅]

戊奈瓜奈𨈘堤磐彆毛Vector卞跡慮允月
皿伕弘仿丞反仇切日﹝
https://github.com/Fujimotec/CppOpenCV/blob/ma
ster/CppCV03.cpp

// Get the feature points from the computed corner map
void getCorners(std::vector<cv::Point> &points,
const cv::Mat& cornerMap) {
// Iterate over the pixels to obtain all features
for (int y = 0; y < cornerMap.rows; y++) {
const uchar* rowPtr = cornerMap.ptr<uchar>(y);
for (int x = 0; x < cornerMap.cols; x++) {
// if it is a feature point
if (rowPtr[x]) {
points.push_back(cv::Point(x, y));
}
}
}
???
cv::Point
(x2,y2)
} cv::Point
(x1,y1)
搪氏匹中仁覜元

// Draw circles at feature point locations on an image
void drawOnImage(cv::Mat &image,
const std::vector<cv::Point> &points,
cv::Scalar color = cv::Scalar(255, 255, 255),
int radius = 3, int thickness = 2) {
std::vector<cv::Point>::const_iterator it =
points.begin();
倰
掂心煋心及心
𤩸五煋心及�磁反iterator
// for all corners
while (it != points.end()) {
// draw a circle at each corner location
cv::circle(image, *it, radius, color, thickness);
++it;
}
} For恅匹手中中方友
for(it = points.begin(); it != points.end(); it++){}
棒及猁匼尺
饜蹈及珂螹井日
饜蹈及郔摽引匹ㄗ仇木匹﹜猁匼杅眭日卅仁化手中中友ㄘ

std::vector及蛁砩萸
? Push仄引仁月午丟乒伉伉奈弁允月
? 眻諉失弁本旦允月卞反倰﹜扔奶朮毛眭勻化云仁仇午
? vector::vector<Point>
每禾奶件正及禾奶件正心凶中卅仇午手匹五月
每仇木匹扑奈件仍午及杻釾萸毛復悵仄凶曰﹜
每郔摽卞珨𠸎卞統桽仄凶曰晞瞳

統蕉恅瓬
OpenCV2 Computer Vision Application Program
ming Cookbook
http://amzn.to/1pjWFe3

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