How does stereocam prevents anti face spoofing?
I am struck with face spoofing. Right now I can setup stereo webcam and take images from left and right webcam simulatenously(at least, I am practicing concurrent programming to do this job). I can...
View ArticleLoading image and getting each pixel's color (C++)
Hello there, I have just finished configuring OpenCV with Visual Studio 2013, so I don't have much knowledge of it. Hence, I am asking such a basic thing. I need to load an image and loop through every...
View ArticleHi. I managed to read an image from directory and compare it with number of...
static void read_imgList(const string& filename, vector& images) { std::ifstream file(filename.c_str(), ifstream::in); if (!file) { string error_message = "No valid input file was given,...
View Articlecv2.remap creates strange images
Hi there, i'm new to stereo calibration and tried to get the matrices of a stereo camera and then remap the images, so i could use them for depth-map generation. I used the sample images `left*.jpg`...
View ArticleProblem to install OpenCV library for Processing
Hello, I try since 2 days to install the library of openCV for Processin to make works this program :...
View ArticleTwo OpenCV's are installed (with different versions) and I can't delete all...
Here is what happened: I have had OpenCV 2.4 on a linux system and I also installed another library called libv4l. For some reason after this install, cmake was unable to find OpenCv. So I installed...
View ArticleHtc One Vs. The Sony Xperia Z - Two 4G Phones Compared
Running on the quad-core ARM Cortex-A9 processor, this 5 " OLED touchscreen device should put out some nice graphics. It can be actually have dual analog sticks, instead of nubs prefer the current...
View ArticleWhy Talk to Specialists When it Comes to Kitchen Remodeling
Have a bit of time and energy to consider the way you want your kitchen designed before you begin a kitchen remodel project. First, you wish your kitchen to be designed in ways that's planning to be...
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View ArticleA Novice's Approach
The increase worldwide Wide online, also referred to as the world-wide-web over the last two decades roughly, has brought with it numerous types of organizations, that have in turn brought a new form...
View ArticleHow to set the parameter of gamma adjustment in cascade?
HOG feature include gamma adjustment. Could you tell me how to set the parameter of gamma adjustment when I select HOG feature in opencv cascadeclassifier.
View ArticleHow to get the scale factor of getPerspectiveTransform in opencv?
I have image A and i want to get the bird-eye's view of image A. So I used getPerspectiveTransform method to get the transform matrix. The output result is 3x3 matrix. See my code. In my case i want...
View Articlepython & imshow with pyplot
Hello all, I'm trying to get running this example import numpy as np import cv2 from matplotlib import pyplot as plt img = cv2.imread('messi5.jpg',0) plt.imshow(img, cmap = 'gray', interpolation =...
View ArticleLooping through pixels in an image and comparing them to previous/next ones.
The title says it all. What I am trying to do is loop through all pixels in an image (successfully so far) and compare one pixel's color to the previous and next one. (Could be next column or next...
View ArticleTrouble extracting number in Sudoku grid
I am trying to build a Sudoku grabber using OpenCV. I have so far been able to get the boundary of the puzzle and apply a perspective transform to get a bird's eye view. In the next step, I am having...
View ArticleFLANN_INDEX_KDTREE in Android
Hello, I am trying to do the following in android # FLANN parameters FLANN_INDEX_KDTREE = 0 index_params = dict(algorithm = FLANN_INDEX_KDTREE, trees = 5) search_params = dict(checks=50) # or pass...
View Articleopencv with python2.7 and python 3
Hi, I am trying to build both opencv3 for python2.7 and python3. I was inside a virtualenv for python2.7 and then called cmake & make as static libs. These files got created lib/cv2.so...
View ArticleInstall Opencv ON eclipse in ubuntu
Hi, i use these link for installation : 1-http://rodrigoberriel.com/2014/10/installing-opencv-3-0-0-on-ubuntu-14-04/...
View Article0 in function init"">opencv_traincascade throwing error "...lbpfeatures.cpp:17: error: (-215)...
Hello everyone. An internet search suggested that this was a bug that was patched in the past so I have no idea what I'm doing wrong to recreate this bug. I've tried it in 2.4.11 and 3.0.0. Running on...
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