{"id":2252,"date":"2024-06-14T15:34:31","date_gmt":"2024-06-14T07:34:31","guid":{"rendered":"https:\/\/sanlangcode.com\/?p=2252"},"modified":"2024-06-14T15:34:31","modified_gmt":"2024-06-14T07:34:31","slug":"c%e4%bd%bf%e7%94%a8opencv%e7%9a%84mat%e5%92%8ciplimage%e8%ae%bf%e9%97%ae%e5%83%8f%e7%b4%a0%e7%9a%84%e6%96%b9%e6%b3%95%e6%80%bb%e7%bb%93","status":"publish","type":"post","link":"https:\/\/sanlangcode.com\/index.php\/2024\/06\/14\/c%e4%bd%bf%e7%94%a8opencv%e7%9a%84mat%e5%92%8ciplimage%e8%ae%bf%e9%97%ae%e5%83%8f%e7%b4%a0%e7%9a%84%e6%96%b9%e6%b3%95%e6%80%bb%e7%bb%93\/","title":{"rendered":"C++\u4f7f\u7528OpenCV\u7684Mat\u548cIplImage\u8bbf\u95ee\u50cf\u7d20\u7684\u65b9\u6cd5\u603b\u7ed3"},"content":{"rendered":"\n

\u5728opencv\u7684\u7f16\u7a0b\u4e2d\uff0c\u904d\u5386\u8bbf\u95ee\u56fe\u50cf\u5143\u7d20\u662f\u7ecf\u5e38\u9047\u5230\u7684\u64cd\u4f5c\uff0c\u638c\u63e1\u5176\u65b9\u6cd5\u975e\u5e38\u91cd\u8981\uff0c\u65e0\u8bba\u662fMat\u7c7b\u7684\u50cf\u7d20\u8bbf\u95ee\uff0c\u8fd8\u662fIplImage\u7ed3\u6784\u4f53\u7684\u8bbf\u95ee\u7684\u65b9\u6cd5\uff0c\u90fd\u5fc5\u987b\u624e\u5b9e\u638c\u63e1\uff0c\u6bd5\u7adf\uff0c\u56fe\u50cf\u5904\u7406\u672c\u8d28\u4e0a\u5c31\u662f\u5bf9\u50cf\u7d20\u7684\u5404\u79cd\u64cd\u4f5c\uff0c\u8bbf\u95ee\u5143\u7d20\u5c31\u662f\u5404\u79cd\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u7684\u7b2c\u4e00\u6b65\u3002<\/p>\n\n\n\n

Mat\u8bbf\u95ee\u56fe\u50cf\u5143\u7d20\u65b9\u6cd5\u6c47\u603b<\/h2>\n\n\n\n

1.\u7528\u6307\u9488\u8bbf\u95ee\u5143\u7d20<\/h3>\n\n\n\n

\u5728\u5927\u591a\u6570\u56fe\u50cf\u5904\u7406\u4efb\u52a1\u4e2d\uff0c \u6267\u884c\u8ba1\u7b97\u65f6\u4f60\u90fd\u9700\u8981\u5bf9\u56fe\u50cf\u7684\u6240\u6709\u50cf\u7d20\u8fdb\u884c\u626b\u63cf\u3002 \u5f53\u9700\u8981\u8bbf\u95ee\u7684\u50cf\u7d20\u6570\u91cf\u975e\u5e38\u5e9e\u5927\uff0c \u4f60\u5fc5\u987b\u91c7\u7528\u9ad8\u6548\u7684\u65b9\u5f0f\u6765\u6267\u884c\u8fd9\u4e2a\u4efb\u52a1\u6765\u63d0\u9ad8\u6548\u7387\u3002 \u5982\u679c\u4f60\u9700\u8981\u9ad8\u6548\u626b\u63cf\u5927\u56fe\u7247\u7684\u6570\u636e\uff0c\u90a3\u4e48\u8bf7\u4f7f\u7528\u6307\u9488\u65b9\u5f0f\u3002<\/p>\n\n\n\n

#include<opencv2\\opencv.hpp>   \n#include<opencv2\\highgui\\highgui.hpp>\n\nusing namespace std;\nusing namespace cv;\n\nint main(int argc, char** argv)\n{\n\tMat img = imread(\"lena.jpg\", 1); \n\tif (img.empty())\n\t{\n\t\tcout << \"fail to read image\" << endl;\n\t\treturn -1;\n\t}\n\tMat img1 = img.clone();\n\tint div = 64;\n\n\t\/* \u65b9\u6cd51\uff1a\u7528\u6307\u9488\u8bbf\u95ee *\/\n\t\/\/\u591a\u901a\u9053\u8bbf\u95ee\u6cd51\n\tint rows = img1.rows;\n\tint cols = img1.cols; \n\tfor (int i = 0; i < rows; i++)\n\t{\n\t\t\/\/uchar* p = img1.ptr<uchar>(i);  \/\/\u83b7\u53d6\u7b2ci\u884c\u7684\u9996\u5730\u5740\n\t\tfor (int j = 0; j < cols; j++)\n\t\t{\n\t\t\t\/\/\u5728\u8fd9\u91cc\u64cd\u4f5c\u5177\u4f53\u5143\u7d20\n\t\t\tuchar *p = img1.ptr<uchar>(i, j);\n\t\t\tp[0] = p[0] \/ div*div + div \/ 2;\n\t\t\tp[1] = p[1] \/ div*div + div \/ 2;\n\t\t\tp[2] = p[2] \/ div*div + div \/ 2;\n\t\t}\n\t}\n\n\timshow(\"lean\", img1);\n\n\n\t\/\/\u591a\u901a\u9053\u8bbf\u95ee\u6cd52\n\tMat img3 = img.clone();\n\tint channels = img3.channels(); \/\/\u83b7\u53d6\u901a\u9053\u6570\n\tint rows3 = img3.rows;\n\tint cols3 = img3.cols* channels; \/\/\u6ce8\u610f\uff0c\u662f\u5217\u6570*\u901a\u9053\u6570\n\tfor (int i = 0; i < rows3; i++)\n\t{\n\t\tuchar* p = img3.ptr<uchar>(i);  \/\/\u83b7\u53d6\u7b2ci\u884c\u7684\u9996\u5730\u5740\n\t\tfor (int j = 0; j < cols3; j++)\n\t\t{\n\t\t\t\/\/\u5728\u8fd9\u91cc\u64cd\u4f5c\u5177\u4f53\u5143\u7d20\n\t\t\tp[j] = p[j] \/ div*div + div \/ 2;\n\t\t\tp[j+1] = p[j+1] \/ div*div + div \/ 2;\n\t\t\tp[j+2] = p[j+2] \/ div*div + div \/ 2;\n\t\t}\n\t}\n\n\timshow(\"lean3\", img3);\n\n\t\/\/\u5355\u901a\u9053\u56fe\u50cf\n\tMat img2 = img.clone();\n\tcvtColor(img2, img2, COLOR_BGR2GRAY);\n\tfor (int i = 0; i < img2.rows; i++)\n\t{\n\t\tuchar* p = img2.ptr<uchar>(i);  \/\/\u83b7\u53d6\u7b2ci\u884c\u7684\u9996\u5730\u5740\n\t\tfor (int j = 0; j < img2.cols; j++)\n\t\t{\n\t\t\t\/\/\u5728\u8fd9\u91cc\u64cd\u4f5c\u5177\u4f53\u5143\u7d20\n\t\t\tp[j] = p[j] \/ div*div + div \/ 2;\n\t\t}\n\t}\n\n\timshow(\"lean2\", img2);\n\twaitKey(0);\n\treturn 0;\n}\n\n<\/code><\/pre>\n\n\n\n
2.\u7528\u8fed\u4ee3\u5668\u8bbf\u95ee\u5143\u7d20<\/h3>\n\n\n\n
\u5728\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u65f6\uff0c \u6211\u4eec\u901a\u5e38\u7528\u8fed\u4ee3\u5668\u5bf9\u6570\u636e\u96c6\u5408\u8fdb\u884c\u5faa\u73af\u904d\u5386\u3002 \u6807\u51c6\u6a21\u677f\u5e93\uff08STL\uff09 \u5bf9\u6bcf\u4e2a\u96c6\u5408\u7c7b\u90fd\u5b9a\u4e49\u4e86\u5bf9\u5e94\u7684\u8fed\u4ee3\u5668\u7c7b\uff0c OpenCV\u4e5f\u63d0\u4f9b\u4e86cv::Mat\u7684\u8fed\u4ee3\u5668\u7c7b\uff0c \u5e76\u4e14\u4e0eC++ STL\u4e2d\u7684\u6807\u51c6\u8fed\u4ee3\u5668\u517c\u5bb9\u3002<\/p>\n\n\n\n
#include<opencv2\\opencv.hpp>   \n#include<opencv2\\highgui\\highgui.hpp>\n\nusing namespace std;\nusing namespace cv;\n\nint main(int argc, char** argv)\n{\n\tMat img = imread(\"lena.jpg\",1); \/\/\u8f7d\u5165\u7070\u5ea6\u56fe\n\tMat img1 = img.clone();\n\tint div = 64;\n\t\/* \u65b9\u6cd52\uff1a\u7528\u8fed\u4ee3\u5668\u8bbf\u95ee *\/\n\n\t\/******************\u591a\u901a\u9053\u7684\u53ef\u4ee5\u8fd9\u4e48\u5199***************\/\n\tMat_<Vec3b>::iterator it = img1.begin<Vec3b>();  \/\/\u83b7\u53d6\u8d77\u59cb\u8fed\u4ee3\u5668\n\tMat_<Vec3b>::iterator it_end = img1.end<Vec3b>();  \/\/\u83b7\u53d6\u7ed3\u675f\u8fed\u4ee3\u5668\n\tfor (; it != it_end; it++)\n\t{\n\t\t\/\/\u5728\u8fd9\u91cc\u5206\u522b\u8bbf\u95ee\u6bcf\u4e2a\u901a\u9053\u7684\u5143\u7d20\n\t\t(*it)[0] = (*it)[0] \/ div*div + div \/ 2;\n\t\t(*it)[1] = (*it)[1] \/ div*div + div \/ 2;\n\t\t(*it)[1] = (*it)[1] \/ div*div + div \/ 2;\n\t}\n\n\timshow(\"lean\", img1);\n\n\n\t\/******************\u5355\u901a\u9053\u7684\u53ef\u4ee5\u8fd9\u4e48\u5199***************\/\n\tMat img2;\n\tcvtColor(img, img2, COLOR_RGB2GRAY); \/\/\u8f6c\u5316\u4e3a\u5355\u901a\u9053\u7070\u5ea6\u56fe\n\n\tMat_<uchar>::iterator it2 = img2.begin<uchar>();  \/\/\u83b7\u53d6\u8d77\u59cb\u8fed\u4ee3\u5668\n\tMat_<uchar>::iterator it_end2 = img2.end<uchar>();  \/\/\u83b7\u53d6\u7ed3\u675f\u8fed\u4ee3\u5668\n\tfor (; it2 != it_end2; it2++)\n\t{\n            \/\/\u5728\u8fd9\u91cc\u5206\u522b\u8bbf\u95ee\u6bcf\u4e2a\u901a\u9053\u7684\u5143\u7d20\n            *it2 = *it2 \/ div*div + div \/ 2;\n\t}\n\timshow(\"lena2\", img2);\n\n\twaitKey(0);\n\treturn 0;\n}\n}\n<\/code><\/pre>\n\n\n\n
\u82e5\u8981\u4ece\u56fe\u50cf\u7684\u7b2c\u4e8c\u884c\u5f00\u59cb\uff0c\u7a0b\u5e8f\u8be5\u600e\u4e48\u4fee\u6539\uff1f \u6211\u4eec\u53ef\u4ee5\u7528<\/p>\n\n\n\n
image.begin<cv::Vec3b>()+image.cols\n<\/code><\/pre>\n\n\n\n
\u521d\u59cb\u5316cv::Mat\u8fed\u4ee3\u5668\u3002 \u83b7\u5f97\u96c6\u5408\u7ed3\u675f\u4f4d\u7f6e\u7684\u65b9\u6cd5\u4e5f\u7c7b\u4f3c\uff0c \u53ea\u662f\u6539\u7528end\u65b9\u6cd5\u3002 \u4f46\u662f\uff0c \u7528end\u65b9\u6cd5\u5f97\u5230\u7684\u8fed\u4ee3\u5668\u5df2\u7ecf\u8d85\u51fa\u4e86\u96c6\u5408\u8303\u56f4\uff0c \u56e0\u6b64\u5fc5\u987b\u5728\u7ed3\u675f\u4f4d\u7f6e\u505c\u6b62\u8fed\u4ee3\u8fc7\u7a0b\u3002 \u7ed3\u675f\u7684\u8fed\u4ee3\u5668\u4e5f\u80fd\u4f7f\u7528\u6570\u5b66\u8ba1\u7b97\uff0c \u4f8b\u5982\uff0c \u5982\u679c\u4f60\u60f3\u5728\u6700\u540e\u4e00\u884c\u524d\u5c31\u7ed3\u675f\u8fed\u4ee3\uff0c \u53ef\u4f7f\u7528<\/p>\n\n\n\n
image.end<cv::Vec3b>()-image.cols\n<\/code><\/pre>\n\n\n\n
3.\u52a8\u6001\u5730\u5740+at()\u8bbf\u95ee\u5143\u7d20<\/h3>\n\n\n\n
#include<opencv2\\opencv.hpp>   \n#include<opencv2\\highgui\\highgui.hpp>\n\nusing namespace std;\nusing namespace cv;\n\nint main(int argc, char** argv)\n{\n\tMat img = imread(\"lena.jpg\",1); \n\tMat img1 = img.clone();\n\tint div = 64;\n\t\/* \u65b9\u6cd53\uff1a\u7528at\u8bbf\u95ee *\/\n\n\t\/****************\u8bbf\u95ee\u591a\u901a\u9053\u5143\u7d20*********************\/\n\tint rows = img1.rows;\n\tint cols = img1.cols;\n\tfor (int i = 0; i < rows; i++)\n\t{\n\t\tfor (int j = 0; j < cols; j++)\n\t\t{\n\t\t\t\/\/\u5728\u8fd9\u91cc\u8bbf\u95ee\u6bcf\u4e2a\u901a\u9053\u7684\u5143\u7d20,\u6ce8\u610f\uff0c\u6210\u5458\u51fd\u6570at(int y,int x)\u7684\u53c2\u6570\n\t\t\timg1.at<Vec3b>(i,j)[0] = img1.at<Vec3b>(i, j)[0] \/ div*div + div \/ 2;\n\t\t\timg1.at<Vec3b>(i, j)[1] = img1.at<Vec3b>(i, j)[1] \/ div*div + div \/ 2;\n\t\t\timg1.at<Vec3b>(i, j)[2] = img1.at<Vec3b>(i, j)[2] \/ div*div + div \/ 2;\n\n\t\t}\n\t}\n\n\timshow(\"lena\", img1);\n\n\t\/****************\u8bbf\u95ee\u5355\u901a\u9053\u5143\u7d20*********************\/\n\tMat img2;\n\tcvtColor(img, img2, COLOR_RGB2GRAY);\n\n\tfor (int i = 0; i < rows; i++)\n\t{\n\t\tfor (int j = 0; j < cols; j++)\n\t\t{\n\t\t\t\/\/\u5728\u8fd9\u91cc\u8bbf\u95ee\u6bcf\u4e2a\u901a\u9053\u7684\u5143\u7d20,\u6ce8\u610f\uff0c\u6210\u5458\u51fd\u6570at(int y,int x)\u7684\u53c2\u6570\n\t\t\timg2.at<uchar>(i, j) = img2.at<uchar>(i, j) \/ div*div + div \/ 2;\n\t\t}\n\t}\n\n\timshow(\"lena2\", img2);\n\n\twaitKey(0);\n\treturn 0;\n}\n\n<\/code><\/pre>\n\n\n\n
IplImage\u8bbf\u95ee\u5143\u7d20\u65b9\u6cd5\u6c47\u603b<\/h2>\n\n\n\n
1.\u4f7f\u7528cvGet2D()\u51fd\u6570\u8bbf\u95ee<\/h3>\n\n\n\n
#include<opencv2\\opencv.hpp>   \n#include<opencv2\\highgui\\highgui.hpp>\n\nusing namespace std;\nusing namespace cv;\n\nint main(int argc, char** argv)\n{\n\t\/*\u8bbf\u95ee\u5355\u901a\u9053\u5143\u7d20*\/\n\tIplImage* img = cvCreateImage(cvSize(640, 480), IPL_DEPTH_8U, 1); \/\/\u5355\u901a\u9053\u56fe\u50cf\n\tCvScalar s;\n\tdouble tmp;\n\tfor (int i = 0; i < img->height; i++)\n\t{\n\t\tfor (int j = 0; j < img->width; j++)\n\t\t{\n\t\t\t\/\/\u53ef\u4ee5\u5728\u8fd9\u91cc\u8bbf\u95ee\u5143\u7d20\n\t\t\ttmp = cvGet2D(img, i, j).val[0];\n\t\t\tcvSet2D(img, i, j, 255);  \/\/\u7b2c\u4e09\u4e2a\u53c2\u6570\u662f\u8981\u8bbe\u7f6e\u7684\u503c\n\t\t}\n\t}\n\tcvShowImage(\"img\", img);\n\n\n\t\/*\u8bbf\u95ee\u591a\u901a\u9053\u5143\u7d20*\/\n\tIplImage* img2 = cvCreateImage(cvSize(640, 480), IPL_DEPTH_32F, 3);\n\tdouble tmpb, tmpg, tmpr;\n\tfor (int i = 0; i < img->height; i++)\n\t{\n\t\tfor (int j = 0; j < img->width; j++)\n\t\t{\n\t\t\ttmpb = cvGet2D(img, i, j).val[0];\n\t\t\ttmpg = cvGet2D(img, i, j).val[1];\n\t\t\ttmpr = cvGet2D(img, i, j).val[2];\n\n\t\t\tcvSet2D(img2, i, j, CvScalar(255,255,255));  \/\/\u7b2c\u4e09\u4e2a\u53c2\u6570\u662f\u8981\u8bbe\u7f6e\u7684\u503c,\u4e09\u4e2a\u901a\u9053\u4e00\u8d77\u8bbe\u7f6e\n\t\t}\n\t}\n\tcvShowImage(\"img2\", img2);\n\n\twaitKey(0);\n\treturn 0;\n}\n\n<\/code><\/pre>\n\n\n\n
2.\u6307\u9488\u65b9\u5f0f\u76f4\u63a5\u8bbf\u95ee<\/h3>\n\n\n\n
\u8ffd\u6c42\u9ad8\u6548\u7387\u5730\u8bbf\u95ee\u5143\u7d20\u8bf7\u4f7f\u7528\u8be5\u65b9\u6cd5\u3002<\/p>\n\n\n\n
#include<opencv2\\opencv.hpp>   \n#include<opencv2\\highgui\\highgui.hpp>\n\nusing namespace std;\nusing namespace cv;\n\nint main(int argc, char** argv)\n{\n\t\/*\u8bbf\u95ee\u591a\u901a\u9053\u5143\u7d20*\/\n\tIplImage* img = cvCreateImage(cvSize(640, 480), IPL_DEPTH_8U, 3);\n\tuchar* data = (uchar *)img->imageData;\n\tint step = img->widthStep \/ sizeof(uchar);\n\tint channels = img->nChannels;\n\tuchar b, g, r;\n\tfor (int i = 0; i < img->height; i++)\n\t{\n\t\tfor (int j = 0; j < img->width; j++)\n\t\t{\n\t\t\t\/\/\u83b7\u5f97\u5143\u7d20\u7684\u503c\n\t\t\tb = data[i*step + j*channels + 0];\n\t\t\tg = data[i*step + j*channels + 1];\n\t\t\tr = data[i*step + j*channels + 2];\n\n\t\t\t\/\/\u4fee\u6539\u5143\u7d20\u7684\u503c\n\t\t\tdata[i*step + j*channels + 0] = 255;\n\t\t}\n\t}\n\n\tcvShowImage(\"img\", img);\n\n\n\t\/*\u8bbf\u95ee\u5355\u901a\u9053\u5143\u7d20*\/\n\tIplImage* img2 = cvCreateImage(cvSize(640, 480), IPL_DEPTH_8U, 1);\n\tuchar* data2 = (uchar *)img2->imageData;\n\tint step2 = img2->widthStep \/ sizeof(uchar);\n\tuchar v;\n\tfor (int i = 0; i < img2->height; i++)\n\t{\n\t\tfor (int j = 0; j < img2->width; j++)\n\t\t{\n\t\t\t\/\/\u83b7\u5f97\u5143\u7d20\u7684\u503c\n\t\t\tv = data2[i*step2 + j];\n\n\t\t\t\/\/\u4fee\u6539\u5143\u7d20\u7684\u503c\n\t\t\tdata2[i*step2 + j] = 255;\n\t\t}\n\t}\n\n\tcvShowImage(\"img2\", img2);\n\n\n\n\twaitKey(0);\n\treturn 0;\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u5728opencv\u7684\u7f16\u7a0b\u4e2d\uff0c\u904d\u5386\u8bbf\u95ee...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2252","post","type-post","status-publish","format-standard","hentry","category-4"],"_links":{"self":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts\/2252","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/comments?post=2252"}],"version-history":[{"count":0,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts\/2252\/revisions"}],"wp:attachment":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/media?parent=2252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/categories?post=2252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/tags?post=2252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}