opencv frame count
fr_cnt = cap.get(CV_CAP_PROP_POS_FRAMES); I'm getting frame number of a video with this code, and when it gets a certain key, it skips 50 frames fr_cnt += 50; cap.set(CV_CAP_PROP_POS_FRAMES,...
View Articlenormalized euclidean Distance between 2 points in an image
Hello forum, When attempting to find the distance stated above, would it be better to use the bhattacharrya distance or the mahalanobis distance ? The mahalanobis function requires an input of the...
View ArticleJava: how to set up parameters for AKAZE features in OpenCv 3.0
I want to set parameters for AKAZE features in OpenCV 3.0 based on this post http://answers.opencv.org/question/3167/java-how-to-set-parameters-to-orb-featuredetector/ I have successfully set...
View ArticleOpencv3.0 in Visual studio 2015
Hello, I want to build opencv for visual studio 2015. can i get any suggestion how to do it? thank you in advance
View ArticleOpenCV camera calibration is lagging on RPi2 with IR camera
I have a system running Arch Linux ARM with opencv-2.4.10-3. The Raspberry Pi 2 is connected to a Raspberry Pi Noir Camera. When i run the calibration the camera is lagging with what looks like 15-20s...
View ArticleNeed advice detecting object (which method)
I am trying to detect bowling pins within an image. First I tried with TrainCascade, For the positive images I took images from the entire pin. I was able to detect single pins that are clearly...
View ArticleOpenCV books about handling real life scenarios
Hello, I'm new to OpenCV, to get started I've been following the official [online tutorials](http://opencv-python-tutroals.readthedocs.org/) and I've been reading the following books: - Practical...
View ArticleMatching Features with ORB python opencv
hi im working in Matching Features with ORB python opencv but when i run this code i get this error Traceback (most recent call last): ValueError: could not broadcast input array from shape () into...
View ArticleUsing a HBITMAP image with template matching
Is there a way to save a screenshot in a HBITMAP, (either partial or full) and use it in template matching? If so, what would be the best way to approach doing so. I think imdecode() would work but I...
View Articleread camera image incorrect
I using the function of videocapture to read camera data VideoCapture cap(0); int Key; Mat src; if(cap.isOpened()) { while(1) { cap.read(src); namedWindow("capture", 0); imshow("capture",src); Key =...
View ArticleIs there a solvePnP function for the fisheye Camera model?
I did an exercise recently where I used solvePnp to estimate the position of a camera. That used the normal camera model. Does there exist a solvePnP() function for the fisheye model as well? Kind...
View Article3d modelling with stitcher?
Hi.. My name is farrukh. I'm new here so if there is anything wrong I ask please forgive me. I just wanted to know that can we use stitching function in opencv for 3d modelling. Like I have some...
View ArticleTypeError: data type not understood opencv python
thats my python3 opencv3 code i get this error when i run this code i did't finished it yet that's are the error can some one help ? line 19, in matches = bf.match(np.array(kpTrain, desTrain))...
View ArticlecontourArea meaning and arclength
Hi, I'm playing with the moment coding and i'm confuse with the result. What I understand is the contourarea and the moment code will give the same result. 1) Contour area - is it means the area...
View ArticleProceedure for obtaining/updating camera pose for moving camera
I would like to determine the translation and rotation of a single monocular camera (android phone) mounted on a micro helicopter. The camera has been calibrated with the chess board, so the camera...
View ArticleResize kinect data
Hi, I have a 512x424 CV16U image which is the depth data of the kinect2. I want to resize it to 640x480 interpolating it. I tried with cv::resize(depth, depth_resized, cv::Size(640,480)) but the image...
View ArticleDetecting color and drawing line
Hi guys. I'm just start OpenCV. I have some trouble to do my small project. I want to make a program to detect orange color and draw line from middle to the orange color's average point . I have a...
View Articleopencv 2.4.11 record 16 bit depth image as video
Hi there, As mentioned in title, I would like to ask is there any way to record 16 bit depth image (Gray scale image) as video and do not compress. Until now, I can only record depth image as 24bit 3...
View Articleopencv fails to import on python
I followed the instructions provided to install opencv-python which was installing opencv and then moving cv2.pyd to site packages. Then to check that it was installed, i tried to import it. i got the...
View ArticleSave floating point TIFF images
Hi team, I work with a team that uses MATLAB for image analysis. They trade floating point TIFF files for analysis. I am working through the simple read/write tutorials but am frustrated by the fact...
View Article