OpenCV

问题 I installed opencv on a lubuntu 12.10 distro. Then when I try to compile a code which is using opencv it says it can't find it. So I try in a terminal : pkg-config --cflags --libs opencv It answers me that it can't find opencv. But the files are installed in /usr/lib. I don't understand why it can't find them. 回答1: You have to put pkg-config --cflags --libs opencv at the end of your g++ line. For example : g++ test.cpp -o test `pkg-config --cflags --libs opencv` Compiles g++ `pkg-config -

问题 I'm trying to create 3 real-time capture frames with webcams into a USB hub into my laptop. Using the "camera" app on Windows, I can change the camera source one at a time and confirm that all 3 webcams are working. However, my OpenCV Python code can only ever find two. (Quick notes on the USB - it's a USB 3.0 hub, laptop port is USB 3, and I even have an active USB female-to-male cable going into the laptop, so given this and the Windows app working, I generally trust the hardware.) Below I

问题 I am trying to write a C++ file in Android Studio and I would like to use OpenCV in my project. However, when I try to use the following includes, I get an error saying Cannot Find 'opencv2' . #include <opencv2/core.hpp> #include <opencv2/imgproc.hpp> #include <opencv2/features2d.hpp> To set up OpenCV in Android, you have to take the following steps, found here, to use the Java part of OpenCV in Android Studio. To the best of my knowledge to use the C++ part of OpenCV in Android Studio, you

问题 I am trying to write a C++ file in Android Studio and I would like to use OpenCV in my project. However, when I try to use the following includes, I get an error saying Cannot Find 'opencv2' . #include <opencv2/core.hpp> #include <opencv2/imgproc.hpp> #include <opencv2/features2d.hpp> To set up OpenCV in Android, you have to take the following steps, found here, to use the Java part of OpenCV in Android Studio. To the best of my knowledge to use the C++ part of OpenCV in Android Studio, you

问题 This question has already been asked before, but the asker didn't provide enough information and left unanswered and I am curious about the program. Original Question Link I'm trying to do a sobel edge detection using both opencv and cuda library, the sobel kernel for X direction is -1 0 1 -2 0 2 -1 0 1 I have 3 files in my project main.cpp CudaKernel.cu CudaKernel.h main.cpp #include <stdlib.h> #include <iostream> #include <string.h> #include <Windows.h> #include <opencv2\core\core.hpp>

问题 This question has already been asked before, but the asker didn't provide enough information and left unanswered and I am curious about the program. Original Question Link I'm trying to do a sobel edge detection using both opencv and cuda library, the sobel kernel for X direction is -1 0 1 -2 0 2 -1 0 1 I have 3 files in my project main.cpp CudaKernel.cu CudaKernel.h main.cpp #include <stdlib.h> #include <iostream> #include <string.h> #include <Windows.h> #include <opencv2\core\core.hpp>

问题 This question has already been asked before, but the asker didn't provide enough information and left unanswered and I am curious about the program. Original Question Link I'm trying to do a sobel edge detection using both opencv and cuda library, the sobel kernel for X direction is -1 0 1 -2 0 2 -1 0 1 I have 3 files in my project main.cpp CudaKernel.cu CudaKernel.h main.cpp #include <stdlib.h> #include <iostream> #include <string.h> #include <Windows.h> #include <opencv2\core\core.hpp>

问题 My goal is to detect the fractured bone using open cv. I tried the following code. and got correct canny detection edges.and also found houghlines.But now my job is to detected the fractured spot in the image. Iam not understanding how to proceed further. In some blogs i found the we can determine angle of houghlines to detect that line is not staright. But not knowing how to find angle of houghline in my code. Can someone help? import cv2 import numpy as np import math img = cv2.imread(

问题 My goal is to detect the fractured bone using open cv. I tried the following code. and got correct canny detection edges.and also found houghlines.But now my job is to detected the fractured spot in the image. Iam not understanding how to proceed further. In some blogs i found the we can determine angle of houghlines to detect that line is not staright. But not knowing how to find angle of houghline in my code. Can someone help? import cv2 import numpy as np import math img = cv2.imread(

问题 I have a .jpg image captured from a webcam. It is a greyscale image. I need to convert the image to a string of its pixels like so: "255 232 45 678 56 23....345 76 44 767 433 345" How do I go about doing this? Also, would changing the size of the image change these values? 回答1: Assuming you have the image represented as a numpy array (since the question is tagged as OpenCV related, then this is likely the case), then to obtain the result you want, I'd take the following steps. First flatten