GPU cv::scaleAdd is slower than CPU cv::cuda::scaleAdd
Hi, I used the following code to compare execution time between CPU and GPU versions of scaleAdd. I am in Ubuntu 16.04, cuda 8.0, 740M card, and core i7 5th gen in my laptop. However, the results I...
View Articleoutput.avi file created but its size is 0k
import numpy import cv2 cap = cv2.VideoCapture(0) fourcc = cv2.cv.CV_FOURCC(*'MJPG') out = cv2.VideoWriter('output.avi',fourcc, 20.0, (640,480)) while(cap.isOpened()): ret, frame = cap.read() if...
View ArticleBring an Object that appear far in an Image closer to your view !
Hello everyone, I am new in Image processing, so I would like to know whether it is possible to bring an object that appear far in an image closer to the view of the user? Please advice if there is...
View ArticleZCA implementation in java
Hello everyone, I'm trying to implement ZCA Whitening algorithm like shown here: http://stackoverflow.com/questions/31528800/how-to-implement-zca-whitening-python/38590790#38590790 with opencv in...
View ArticleOpenCV vs PCL
I am working on segmentation in 3d scenes and I was wondering if the KDTree algorithm in opencv provides the same clustering functionality as the one from PCL ? Can it region grow and can I add my own...
View ArticleWhat does the ValueError : could not broadcast from input array(1) to input...
import numpy as np import cv2 from matplotlib import pyplot as plt while(1): img=cv2.imread('D:\IMG_0590_1.jpg') ball = img[278:104, 330:158] img[181:355, 100:274] = ball cv2.imshow('img',img) if...
View Articlehow to use emgu cv in c# extracting image cordinates,matching one image with...
Hello friends, i'm new in asp.net c# windows application and also first time using emgucv in c# windows application. I want to develop a c# windows application in which when i upload image first it...
View Articlemeasure depth
hi I want to measure depth with OpenCV Stereo_match algorithms that are available in the examples(Cpp) I use. but Input data can not be detected in below loop: if (argc < 3) { print_help(); return...
View ArticleOpencv textdetector false positives
Hello you all, I'm a bit surprised about the Opencv text detector module results. This is what I get using the standard textdetection sample code: ...
View Articlegenerating dynamic motion blur
say I have some frames of a CG animation and wish to apply motion blur as a post-processing effect (simulated by this waterfall)  I could use dense...
View ArticleDoes OpenCV forum have a Chat page?
I'd like to know if this site has a chat page. I have some questions I'm not sure warrant a full question.
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Real-World last empire war z apk mod Remedies - Insights
The Other Last Empire War Z apk mod classification comes with a wide-range of game that may not fit in almost any styles that are classic. Big-budget motion sport Uncharted 2: Among Thieves, area of...
View Articlefeature detection code error
Hi https://github.com/uscrs-art/beohawk-ros/blob/master/test_code/feature_matching.cpp This is the link which i reffered from github... i m using opencv version 2.4.13.. but i got an error......
View ArticleNo Make file found
I need to install opencv extra modules.. so I followed the steps given :https://github.com/opencv/opencv_contrib I did: C:\Users\research lab>cd C:\opencv3.1\build C:\opencv3.1\build> cmake...
View Articlean urgent question about PCA on image!
Why this algorithm can not recover completely the images that are out of training samples ??? I mean ,if this method can only recover the images in the training examples perfectly,but those new test...
View ArticleOpenCV MakeFile build error
Dear All, I am trying to install OpenCV and integrate it with Eclipse as I wish to do some image processing. I installed OpenCV 3.1 on windows 10 (64 bit), CMake 3.6.1 and MinGW (both gcc and g++...
View Articledepth_estimate
hi I want to measure depth with OpenCV Stereo_match algorithms that are available in the examples(Cpp) I use. but Input data can not be detected in below loop: if (argc < 3) { print_help(); return...
View Articlehow to find the end point of a contour
Hi All, is there any function or way to find the end points of a contour ,i am able to find the contours in an image using the below code and in next step i need to get the start and end points for all...
View ArticleHow to increase the video resolution using mat
Hello, Current video output is 640x480 resolution, how to increase 1280x1024 resolution. Append the image to AVI file Image rgbImage; (pCameraBuf->vecImages1[imageCnt]).Convert(...
View ArticleIs there a way to set new window position?
If I create 2 new windows, using imshow() the new windows will overlap eachother every time I load the application. it would be nifty if I could set the initial window location with a coordinate....
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