我在 Ubuntu 12.04 上使用带有 CUDA 的 OpenCV 主分支 (3.0.0.dev),并尝试使用 gpu 代码编译以下 opencv:
#include <iostream>
#include "opencv2/opencv.hpp"
#include "opencv2/core.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/gpu/gpu.hpp"
using namespace cv;
int main (int argc, char* argv[])
{
try
{
cv::Mat src_host = cv::imread("file.png", CV_LOAD_IMAGE_GRAYSCALE);
cv::gpu::GpuMat dst, src;
src.upload(src_host);
cv::gpu::threshold(src, dst, 128.0, 255.0, CV_THRESH_BINARY);
cv::Mat result_host = dst;
cv::imshow("Result", result_host);
cv::waitKey();
}
catch(const cv::Exception& ex)
{
std::cout << "Error: " << ex.what() << std::endl;
}
return 0;
}
编译命令为:
g++ testgpu.cpp -o test `pkg-config --cflags --libs opencv` -lopencv_gpu
它有以下编译错误:
testgpu.cpp: In function ‘int main(int, char**)’:
testgpu.cpp:13:51: error: ‘CV_LOAD_IMAGE_GRAYSCALE’ was not declared in this scope
cv::Mat src_host = cv::imread("file.png", CV_LOAD_IMAGE_GRAYSCALE);
^
testgpu.cpp:17:52: error: ‘CV_THRESH_BINARY’ was not declared in this scope
cv::gpu::threshold(src, dst, 128.0, 255.0, CV_THRESH_BINARY);
^
testgpu.cpp:19:31: error: conversion from ‘cv::gpu::GpuMat’ to non-scalar type ‘cv::Mat’ requested
cv::Mat result_host = dst;
^
是OpenCV的安装有问题,还是Opencv 3.0.0的API变了?
最佳答案
gpu
模块在 OpenCV 3.0 中被重新设计。它被拆分成几个模块,重命名为 cuda
,gpu::
命名空间重命名为 cuda::
。 OpenCV 3.0 的正确代码:
#include <iostream>
#include "opencv2/opencv.hpp"
#include "opencv2/core.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/cudaarithm.hpp"
using namespace cv;
int main (int argc, char* argv[])
{
try
{
cv::Mat src_host = cv::imread("file.png", cv::IMREAD_GRAYSCALE);
cv::cuda::GpuMat dst, src;
src.upload(src_host);
cv::cuda::threshold(src, dst, 128.0, 255.0, cv::THRESH_BINARY);
cv::Mat result_host(dst);
cv::imshow("Result", result_host);
cv::waitKey();
}
catch(const cv::Exception& ex)
{
std::cout << "Error: " << ex.what() << std::endl;
}
return 0;
}
关于c++ - 编译错误 cv::gpu,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19368244/