How to refine the edges of an image?
Hi all, I extracted the following object using grabcut alogrithm. [image description](/upfiles/14835974907280043.png) However, i wish to have more refined edges of the extracted object. Is there any...
View Articleshapedescr error using python3 - opencv3
Hello all :) I've been trying to modernize a python2 script to python3 and after struggling with the errors I've narrowed it down to the following error. Traceback (most recent call last): File "",...
View Articlehow to detect and remove shadow of a object
hey everyone, I am working to detect and remove shadow of a object from in image. any suggestion would be appreciated . Thanks
View ArticleWhy does the foreground image from background subtraction look transparent?
Hello! I've been working on background subtraction techniques to detect humans in a scene. Because I don't want the background to change, and just subtract the frames from the first reference frame,...
View ArticleWhat is the reverse of warpPerspective ?
Hi all ! At the bottom of this [link](http://docs.opencv.org/3.1.0/da/d6e/tutorial_py_geometric_transformations.html), a transformation extract the sudoku in "full screen". I would like to draw some...
View ArticleGetting pthread related errors during opencv compilation for arm64
../lib/libopencv_core.so: undefined reference to `pthread_mutexattr_destroy' ../../lib/libopencv_imgcodecs.so: undefined reference to `pthread_create' ../../lib/libopencv_imgcodecs.so: undefined...
View ArticleGet 3d coordinates by 2d point on camview
Hi!, I have calibrated camera (i have camera_matrix, distortion_coefficients, projection_matrix). My cam is pointed to a wall. When I choose a point on 2d image (camera view capture), I would like to...
View ArticleStitching Images, error code 1
Hi, I have a simple code of stitching image. int main() { Mat pano; vector imgs; imgs.push_back ( imread ("2.jpg",CV_LOAD_IMAGE_COLOR)); imgs.push_back ( imread ("3.jpg",CV_LOAD_IMAGE_COLOR));...
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Renting an Event Bus
A party bus can be found in helpful for lots of that intend to head out during the night as well as celebration. A party bus is generally made use of for personalized journeys, decline offs, weddings,...
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Party Bus Solutions
Is there a celebration turning up and you have actually prepared every little thing except the transportation. No person wants to miss the party. There are lots of people that get to the celebration...
View ArticleHow to transform a 3D model for Augmented Reality application using OpenCV...
I'm developing a simple marker based augmented reality application with **OpenCV Viz and ARUCO**. I just want to visualize a 3D object (in PLY format) on a marker. I can run marker detection and pose...
View ArticleFalse memory leaks in MFC
Is there someone who uses OpenCV in the MFC application? I don't believe that I am the only person on the world who is using this combination. I have really annoying problem with false memory leaks....
View ArticleExtracting Contours from Image - Python
Hi guys, I am new with OpenCV3.2 and I am trying to extract the contours of this image:  I am executing the following Python code but I can't manage...
View ArticleRead YUV image from filedump
Hello Guys, I am having yuv pixel contents(YUV420) as file dump. For example, byte[1], byte[2]........byte[(width * height * 3)/2] in file. I am having few questions: 1) How to read YUV pixels using...
View ArticleHow to extract white paper from image
Hi, I'm new to opencv , I want to write a script for having an effect like Microsoft office lens, which can detect a piece of paper no matter the camera angle and put a rectangle around it and crop it...
View ArticleOpen 16 bit video file (proprietary format) with OpenCV
I would very much like to import in OpenCV a video file which is in a proprietary format - from a Xenics-Gobi infrared camera - file extension *.xvi. The file is a 16 bit video format and with the...
View ArticleProblem with building opencv_contrib. Cannot find file face.hpp.
I want to use FaceRecognizer class. [As far as I know](http://answers.opencv.org/question/73361/identifier-facerecognizer-is-undefined-opencv-300/), it's not present in OpenCV 3.* versions, so I need...
View ArticleOpenCV 3.2 train.py is giving me a 'module object has no attribute...
I've successfully built OpenCV before and realize that for version 3 it's necessary to additionally build opencv_contrib. I've cloned from github and installed the cmake gui, but I'm not able to...
View ArticleINstalling OpenCV
Hi guys just downloadOpenCV , and have a question on how to install it as a static ? witch files do i need ? will i be okay just copying include folder to my project folder ? or do i need something...
View ArticleInteractive calibration frame rejected
So I'm trying to use opencv_interactive-calibration with the following parameters: opencv_interactive-calibration -ci=4 -h=5 -w=8 --pf=defaultConfig.xml --of=cameraParameters.xml -t=charuco My config...
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