[opencv] Forum Topics

This is the error message: >>> %Run -c $EDITOR_CONTENT Traceback (most recent call last): File "<string>", line 6 image = cv2.imread(“C:\Users\Audun Nilsen\Pictures\pica.webp”) ^ SyntaxError: invalid character in identifier >>> This is the code: import cv2 # OpenCV for image processing image = cv2.imread(“C:\Users\Audun Nilsen\Pictures\pica.webp”)

I am proceeding with parallel processing using GPU, while installing CUDA, I did build the dll files in CMAKE to have GPU support. I did include all the CUDA files and now when I am trying to rebuild the following solution: #include <iostream> #include <stdio.h> #include "C:\Users\admin\Documents\opencv\build\include\opencv2\opencv.hpp" #include "C:\Users\admin\Documents\opencv\build\include\opencv2\gpu\gpu.hpp" using …

How to draw a convexthull and a polygon around the hand in this tutorial. I found this tutorial in JavaCV how to detect a hand gesture. But it doesn't show how to draw the convexhull or a polygon around the palm. Can someone tell me how to do that in …

Hi i developed a C++ code for tracking a yellow colored object. IDE: CodeBLocks Opencv Version:2.4.6 Language: C++ Following is the code for yellow color detection, which i was able to successfully perform. #include "opencv2/imgproc/imgproc.hpp" #include "opencv2/highgui/highgui.hpp" #include <iostream> using namespace cv; using namespace std; Mat GetThresholdedImage(Mat image_here) { Mat …

i made a project using visual studio and opencv ,it worked fine. however later i thought of adding GUI. i googled and found abput QT.some how i managed to include libraries and build paths,when i use **C fucntions of opencv** the program works fine but when i use ***c++ features …

I am trying to semi-circles and full circles in an image. This is the process I'm following : Process image (including Canny edge detection) Find contours and draw them on an empty image, so that I can eliminate unwanted components. (The processed image is exactly what I want.) Detect circles …

hi. i am working on a project to find colors. i've stucked in finding purple color. i've used many application for finding color ranges and i've tested many numbers. i am using cvInRangeS function. i really appreciate if someone helps me. thanks.

hi, Below is the code that displays 2 similar images and pixel values BGR of both images. I wanted to know , how to calculate the distance(euclidean) between selected pixels in 2 images[like (100,100),(100,101) coordinate and so on.how to go about it?how to use the values of BGR and B1G1R1 …

Hello, I'm building opencv library with cmake for mingw to be used with qt and i've been able to generate the makefilelist. But when i type **mingw32-make** at the command prompt i get error when it's 44% built. error says: *Cannot export _ZN12_GLOBAL__N_13R)p3aLLEv: symbol not found Cannot export _ZN12_GLOBAL__N_17CmpType3allEv: symbol …

# **I am installing OpenCv using these steps:** # Building OpenCV from Source Using CMake, Using the Command Line Create a temporary directory, which we denote as <cmake_binary_dir>, where you want to put the generated Makefiles, project files as well the object files and output binaries. Enter the <cmake_binary_dir> and …

I am compiling some source that is linked to two packages. One is OpenCV and the other is a driver library for an infrared camera. The company only provides a 32-bit version of the library via an rpm package. I compiled OpenCV from source and it's libraries are installed in …

Hi everybody, is there anyone with experience with opencv for python? I was wondering if there is a way to allocate some memory on demand, since when I try processing images (usually bigger than 800x800 pixels) I get a "OpenCV Error: Insufficient memory (unable to allocate 59500564 bytes)" message. (bytes …

hi i want to do object identification (whether it is a human or vehicle).... i use cvmatchtemplates and cvshapematch.... both function couldn't give proper result... which function should give better result for my project......

Am I correctly including all the library files from the directory ?? LIBS += `"C:\openCV24\opencv_bin\lib\*.dll"` Because this line keeps on giving me `C:\openCV24\opencv_bin\install\lib*.dll: Invalid argument` Ive tried looking several places and have altered this line many times but cant seem to get it to work. Can someone please let me …

Hi, i need to create a binary matrix (one which elements can only be 1 or 0) in openCV. The nearest that I was getting is creating a matrix which elements are 8-bit values using the CV_8UC1 dataType. There must be another dataType which specifies that the matrix elements are …

how to implement active appearance model any tutorial to coding of it. in opencv vc++

im using this code to detect face features,it works properly but after sometime of its run,video frame pauses and stops responding. im running it on microsoft visual cpp 2008 #include "stdafx.h" #include <stdlib.h> #include <stdio.h> #include <math.h> #include <cv.h> #include <highgui.h> #include <conio.h> // A Simple Camera Capture Framework const …

Does anyone know the equivalent version of cvCreateImage in c++. I tried googling it but no luck. Thanks!!!

Can anyone discuss how to convert a jpeg color image into binary using OpenCv and C++. I find it hard understanding it on my own. I found sample programs but that really doesn't help much if I don't understand the meaning of every line of code. At least a step …

I'm trying my hand at OpenCV and have run into a problem that Dr. Google hasn't been able to help me out with. According to O'Reilly, the following code should play an AVI file in a window the program creates. [CODE] #include "highgui.h" #include <stdio.h> int main( int argc, char** …

C programming in IOS? Hi, I am implementing an image editing program in C which should work both in Windows, IOS (iDevices). Ths point is that we do not want to re-write same code in Object-C or Xcode. Let's say that we have a C program that is just resizing …

GUYs, pls help me in installing openCV in win7 64-bit, i downloaded opencv 2.3 its round about 141mb and it has some cmake files. i got it from here [url]http://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.3.1/[/url] and i dont know how to proceed further?

hey everyone, i have trying to build a aplication which takes hand gestures as input and performs corresponding mouse events as output using opencv inc/c++, but im having trouble implementing the hand detection and gesture recognition part.. so anyone can help me out..!!!

I am a beginner in openCV and C++ as well.I am stuck in a particular place while trying to implement face recognition in open cv. I have the stored training images in a folder called data the images of first person is stored like 1_john1.pgm 2nd image of first person …

Hello, Ive been working on learning opencv by example and have learned lots but have some confusions/confusion in some parts, and would appreciate if you guys could help me out.. First off I have 5 matrices, and I want to combine them into one big matrix.. for this reason I …

Hello, I'm having trouble running the CalcOpticalFlowPyrLK in Python. When I try doing the calculations for the Lucas Kanade code it will not compute the error I get is the following:[ICODE] File "****", line 63, in callback (currFeatures, status, track_error) = cv.CalcOpticalFlowPyrLK(old_image, new_image, old_pyramid, new_pyramid, old_features, (3,3), 1, (cv.CV_TERMCRIT_ITER, 10, …

I have followed this tutorial for setting up Eclipse and OpenCV: [URL="http://carrierfrequency.blogspot.com/2011/05/opencv-22-in-windows-using-eclipse-ide.html"]http://carrierfrequency.blogspot.com/2011/05/opencv-22-in-windows-using-eclipse-ide.html[/URL], and doing it with OpenCV 2.3. But, I'm always getting the error: Type 'IplImage' could not be resolved for IplImage* img = 0; Why is that? Thanks.

Hi, I wrote a program for detecting circles using Hough Transform using OpenCV in C. The program inputs 3 images, each image contains a fixed small circle and a big circle with variable position. The program then recognizes both the circles and marks the centres of both the circles. Now …

Hey friends lets checkout a small, simple and cute python program for taking photos with with your webcam without the help of any third party application programs. [CODE] import os import datetime import opencv.adaptors from opencv import highgui import Image def get_image(camera): im = highgui.cvQueryFrame(camera) # Add the line below …

Im trying to install the opencv libraries and i tried following the instructions at: [URL="http://blog.cuvilib.com/2011/03/22/how-to-build-opencv-2-2-with-gpu-cuda-on-windows-7/"]http://blog.cuvilib.com/2011/03/22/how-to-build-opencv-2-2-with-gpu-cuda-on-windows-7/[/URL] but Im having problems getting the sample code to compile. When I try: [CODE]#include <iostream> #include <opencv2/opencv.hpp> #include <opencv2/gpu/gpu.hpp> using namespace std; int main() { try { cout<<cv::gpu::getDeviceName(0); } catch(const cv::Exception& ex) { std::cout << …