How to utilize opencv3.1.0's GeneralizedHough
I am wondering if it is possible to actually use the Generalized Houghtransform which is available in version 3.1.0. How can I perform generalized Hough transform in python? The generalizedHough is...
View ArticleThe Latest info On Apple goods
Another addition to the amazing list of iPhone apps is the SMS backup app. With the help of this app you can now keep a record of your SMS. Also, to make sure that you don't lose your important...
View ArticleHow to decomposes image into detail layer
I convert Image into CIELab color space. After that I split Image into 3 channels are Lightness,a*,b* . So I have 2 questions 1. How can I decompose Lightness channel into Detail Layer. 2. Assume I...
View ArticleMergeDebevec produces strange color effect
Hello, In attachment, an archive with 3 bracketed photos and LDR result after MergeDebevec and tonemapping, as you can see, a dark area appears on the left above the beach. I'm using opencv 3.1 but...
View ArticleSet good aspect ratio for CvCameraViewListener2 camera frames in android
Hi, I have a problem displaying the frames from CvCameraViewListener2 camera in android, Something happens to the ratio of the frames and i can not set it to be normal and correct resolution. Does any...
View ArticleSURF/SIFT Java wrapper for OpenCV 3.x/OSX 10.11
Sorry for my lame question, I'm still new to OpenCV. I'm trying to compile OpenCV 3.1 with SURF/SIFT support from the git master. It looks like there is no way I can access these algorithms from Java...
View Articleopencv manager was not initialized correctly , unfortunately app has stopped...
HI I'm trying to run opencv app on my S6 device. I have installed opencv manager from play store but when I run the app this message is displayed ( opencv manager wasn't initialized correctly ) or (...
View ArticleHow to detect edge from image in imageview?
Sir I am new in android and I want to detect edges from image . I have an imageview and a button on a button Click Listener I have to detect edges in the imgaeview please help me and send me an example.
View ArticleHow to access OpenCV data root directory?
I would like to access /usr/local/share/OpenCV/haarcascades/haarcascade_frontalface_default.xml from OpenCV distribution, but in a platform-independent way, e.g. in Python...
View ArticleHow to define a matrix with 5000 specific elements
Hello, I need to define a matrix M, M is 5000*2. In matlab, M=[1,45;89,3;....], it's not regular, so I can't define it in a loop. In my code I tried to define it like Mat M = (Mat_(num, 3) <<...
View ArticleLBP train_cascade number of features
When I train my classifier using opencv_traincascade by using local binary pattern (LBP), I get this written on console : Number of unique features given windowSize [50,28] : 51408 How is this number...
View ArticlePython: Pyramids not working for calcOpticalFlowPyrLK
System information (version) OpenCV => 3.1-dev Operating System / Platform => Windows 64 Bit Compiler => Visual Studio 2015 Detailed description: When trying to run pyramids as the input for...
View ArticleError: identifier "erstat" is undefined
I have downloaded the text detection code from github (https://gist.github.com/agasiev/10021533). but it is producing many similar errors like: identifier erstat is undefined identifier...
View ArticleBuilding OpenCV 3.1.0 from source with SIFT and SURF
I'm trying to build OpenCV 3.1.0 (with the extra contrib packages) from source. I'm following the [instructions in this...
View ArticleLBP train_cascade process of training
I am trying to understand what is train_cascade ( using LBP) actually doing with samples. If I have, for example, 1000 positives and 1000 negatives, it calculates LBP histogram for each, right? And...
View ArticleVisually anayzing network diagrams.
I'm trying to build a system which can recognise simple networks of connected nodes from hand drawings eg.  I'm particularly interested in...
View ArticleHow can I limit the detection of squares to a limited field in the Mat frame?
I would like to detect squares in a limited field of a detected frame, such as the first 200 pixels. I see the squares example, and have a general idea that I might only process squares that in the far...
View ArticleObject Detection: Detect Particular Person from Surveillance Real-Time Video
Hi Guys, I'm working on Opencv with Python, for my Final Year Project on surveillance, my requirement is to detect particular person from the motion, currently I'm using BG/FG Subtractor to detect...
View ArticleDetector particular persons
Hello at all! I would creat a C program with IPCam where I can recognize 10 particular persons. IPCam is positioned as a surveillance camera. This because I have to generate an allarm when these...
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