据我所知，除了给它一个图像列表之外，没有办法向 OpenCV 引擎提供额外的数据。不过，它本身就做得很好。我会查看一些示例代码，并测试每个拼接操作需要多长时间。从我使用 4x6、4x8、...、4x20 全景重建的实验来看，所需的 CPU 时间似乎随着重叠图像的数量而增加。我想您的案例至少需要一分钟才能在现代机器上进行计算。
来源：
https ://code.ros.org/trac/opencv/browser/trunk/opencv/samples/cpp/stitching.cpp?rev=6682
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11 // For Open Source Computer Vision Library
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42
43 // We follow to these papers:
44 // 1) Construction of panoramic mosaics with global and local alignment.
45 // Heung-Yeung Shum and Richard Szeliski. 2000.
46 // 2) Eliminating Ghosting and Exposure Artifacts in Image Mosaics.
47 // Matthew Uyttendaele, Ashley Eden and Richard Szeliski. 2001.
48 // 3) Automatic Panoramic Image Stitching using Invariant Features.
49 // Matthew Brown and David G. Lowe. 2007.
50
51 #include <iostream>
52 #include <fstream>
53 #include "opencv2/highgui/highgui.hpp"
54 #include "opencv2/stitching/stitcher.hpp"
55
56 using namespace std;
57 using namespace cv;
58
59 void printUsage()
60 {
61 cout <<
62 "Rotation model images stitcher.\n\n"
63 "stitching img1 img2 [...imgN]\n\n"
64 "Flags:\n"
65 " --try_use_gpu (yes|no)\n"
66 " Try to use GPU. The default value is 'no'. All default values\n"
67 " are for CPU mode.\n"
68 " --output <result_img>\n"
69 " The default is 'result.jpg'.\n";
70 }
71
72 bool try_use_gpu = false;
73 vector<Mat> imgs;
74 string result_name = "result.jpg";
75
76 int parseCmdArgs(int argc, char** argv)
77 {
78 if (argc == 1)
79 {
80 printUsage();
81 return -1;
82 }
83 for (int i = 1; i < argc; ++i)
84 {
85 if (string(argv[i]) == "--help" || string(argv[i]) == "/?")
86 {
87 printUsage();
88 return -1;
89 }
90 else if (string(argv[i]) == "--try_gpu")
91 {
92 if (string(argv[i + 1]) == "no")
93 try_use_gpu = false;
94 else if (string(argv[i + 1]) == "yes")
95 try_use_gpu = true;
96 else
97 {
98 cout << "Bad --try_use_gpu flag value\n";
99 return -1;
100 }
101 i++;
102 }
103 else if (string(argv[i]) == "--output")
104 {
105 result_name = argv[i + 1];
106 i++;
107 }
108 else
109 {
110 Mat img = imread(argv[i]);
111 if (img.empty())
112 {
113 cout << "Can't read image '" << argv[i] << "'\n";
114 return -1;
115 }
116 imgs.push_back(img);
117 }
118 }
119 return 0;
120 }
121
122
123 int main(int argc, char* argv[])
124 {
125 int retval = parseCmdArgs(argc, argv);
126 if (retval) return -1;
127
128 Mat pano;
129 Stitcher stitcher = Stitcher::createDefault(try_use_gpu);
130 Stitcher::Status status = stitcher.stitch(imgs, pano);
131
132 if (status != Stitcher::OK)
133 {
134 cout << "Can't stitch images, error code = " << status << endl;
135 return -1;
136 }
137
138 imwrite(result_name, pano);
139 return 0;
140 }
141
142
