2015-08-26 05:27:29 -0600 | asked a question | Keypoints and Descriptors in SURF I'm new to openCV i m currently working on stitching algorithm. In step1 the key points are detected using SURF detector, 1)which key points are detected by SURF? 2) the argument uses "Hessian",assigned a value 400 ("taken from openCV tutorial"). What is the role of this argument? 3) In the next step, the key points from step1 are used to computer "descriptors"? what are these descriptors? Thanks for your help.! //-- Step 1: Detect the keypoints using SURF Detector int minHessian = 400; |
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2015-08-21 13:53:40 -0600 | commented answer | accessing cameras- abort() call @pklab: so how would i add the time delay in between? sleep() method isn't recognized by the editor. |
2015-08-21 13:07:12 -0600 | commented answer | accessing cameras- abort() call i'm new to OpenCV one thing i just don't understand, one code worked fine one day and the very next day the same code for same cameras gives such errors lol how is that possible. |
2015-08-21 12:50:03 -0600 | commented answer | accessing cameras- abort() call @pklab: its still not done :( this is what I've made in accordance with your suggestion, the problem is still the same, either of the 2 cams captures the frame. I want to take picture from both the webcams simultaneously :( |
2015-08-21 11:16:50 -0600 | commented answer | accessing cameras- abort() call @pklab the error is somewhere else... its still not working ... for a test, i just tried to run another fine and working code while only laptop builtin camera was working, this code (written below) worked. The moment i plugged in my 1st webcam (now 1 webcam and builtin cam is connected) this code also give a call to abort() .. the same error for previous code.. closing VS13 running code again , makes everything correct again...so its not the code, the error is some where else?? am i right ? 2nd Code: { VideoCa1pture cap(0); if (!cap.isOpened()) { std::cerr << "ERROR: Could not open camera" << std::endl; } namedWindow("video", 1); for (;;) { Mat frame; cap >> frame; if (waitKey(30) >= 0) break; } |
2015-08-21 11:01:06 -0600 | commented answer | accessing cameras- abort() call and what is the logic of using AND around the empty(), why not OR? what difference does it make ? |
2015-08-21 11:00:44 -0600 | commented answer | accessing cameras- abort() call @pklab with the same logic (without even a single change) it worked precised but now it gives an error :/... Anyhow according to your suggestion I've altered the code, surprisingly the error is removed :) but ... only frame of device 0 is captured, nothing is taken from Device 1 :/ :( |
2015-08-21 10:30:25 -0600 | asked a question | accessing cameras- abort() call Hi, I've this simple code which worked fine for my 2 U.S.B webcams, but now for some strange reasons it sometimes stuck and it shows Runtime library error "R6010 abort() has been called". Detaching one of the camera, running the code again makes everything fine and sometimes just closing VS13 repairs it. I find it really absurd pls give any solution. } |
2015-08-20 00:42:25 -0600 | asked a question | error reading images from command line in VS13 In Vs13 , i'm giving cmd line argument in this way: Solution Explorer Properties -> Debugging -> Command Argument -> "D:/images/image1.jpeg" "D:/images/image2.jpeg" On running this code, it displays the error: Error reading original images . Pls fix the code include <stdio.h>include <iostream>using namespace cv; void readme(); /* @function main */ int main(int argc, char* argv) { if (argc != 3) { readme(); return -1; } } /** @function readme */ void readme() { std::cout << " Usage: Panorama < img1 > < img2 >" << std::endl; } |
2015-08-19 11:43:55 -0600 | commented question | imread, command line arguments in VS13 @LBerger: these errors doesn't matter unless at least single image is read, which is not done :/ and i'm confused why is that.. :( |
2015-08-19 08:57:30 -0600 | commented question | imread, command line arguments in VS13 sorry friend @LBerger you pointed out the right mistake but unfortunately the code even doesn't reach there. It gives "Error The image can't be loaded" as i mentioned i'm unable to load my images by command line arguments. |
2015-08-19 06:31:06 -0600 | asked a question | imread, command line arguments in VS13 I'm trying to run this code in VS13 that uses command line argument I'm following this method but its nt working. Solution Explorer Properties Debugging Command Arguments "D:/Images/image1.jpeg" "D:/Images/image2.jpeg" Code: } |
2015-08-19 06:21:07 -0600 | commented question | assertion failed you were right, images were not uploaded. I've restored the original version of the code that passes command line argument. However this doesn't work too :/ I'm using VC13 and i've given the arguments to properties of solution explorer -> debugging -> command argument -> "C:/image1.jpeg" "C:/image2.jpeg" using namespace std; using namespace cv; int main(int argc, char* argv[]) { Mat img; |
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2015-08-19 05:27:56 -0600 | asked a question | stitcher class functionality Hi, i'm looking for working steps and explanation of stitcher class. how createdefault() , stitch() , status() and other methods actually work. I studied some basic explanation of stitching pipeline and want to explore it more. I'm a beginner level programmer i want to have rudiment knowledge of openCv. Thanks |
2015-08-18 13:44:33 -0600 | asked a question | assertion failed on running this code an assertion failed error occurred on cmd line window OPENCV Error : Assertion Failed <scn =="3" ||="" scn="4"> in cv::cvtColor,file:C:(address) |
2015-08-16 10:14:53 -0600 | commented question | capturing image using more than one camera @theodore The following code provides me snapshots , but I don't want the first frame. I want to put some delay between the start of device and grabbing a frame so that any blurred frame or low quality frame may be discarded. For this my remedy was to take multiple pictures and waste the initial frames and that is what i made but this din't work. What you guys would suggest ? } |
2015-08-16 08:07:41 -0600 | asked a question | capturing image using more than one camera I want to capture image from 2 cameras connected to my laptop. when i run this code, it is compiled fine but it shows nothing. Pls fix this issue. |