What is the best way to detect white blood cells among the red blood cells in...
Please suggest an AI based approach. Thanks.
View ArticleRemove camera lag in opencv python
i am working on Odroid and running a face detection using open cv python on it. but there is too much lag in the camera. i have tried a lot of things but couldn't remove the lag. please suggest how...
View ArticleGeneralized hough transform implementation in Opencv?
From [this](http://stackoverflow.com/questions/25669494/generalized-hough-transform-for-shape-detection) question on stack overflow i know there is no opencv implementation for generalized hough...
View ArticleFor the pre-processing method, I am using Watershed filter. But, I am not...
Here is my code: #include "opencv2/imgproc/imgproc.hpp" #include "opencv2/highgui/highgui.hpp" #include "opencv2/opencv.hpp" #include using namespace cv; using namespace std; class WatershedSegmenter...
View ArticleAutomatic ROI detection
Hi All, I am working on foreground extraction using Grabcut algorithm which will extract the object located inside the region of interest. However, instead of specifying the ROI manually, is there any...
View Articleincrease performance of OpenCV on Beaglebone Black
Dear everyone, I install OpenCV 2.4.9 on Beaglebone Black (ubuntu 12.04), and compile with NEON to increase frame rate, after compiling, the frame rate still slow, about 2-3 fps, so I just want to find...
View ArticleProblem with Watershed algorithm
How to find the contour of only the leg and foot parts? Original image: Denoised image:  Result:...
View Articleopencv VideoCapture property
Hi, Is there any API in opencv ( or any programmatic way ) to get the range of a particular property of VideoCapture class like exposure or brightness.
View Articlehow to find angle from x y points?
I have image which contain 12 center point of rectangle. I am not getting how to code for image rotation from that point.[C:\fakepath\deskew.png](/upfiles/14829318308820113.png).Please help me with...
View ArticleWhen I use 'cv2.imread()' the image window show not responding.Can somebody...
I am using opencv 2.7When I use 'cv2.imshow('image',img)' the image window shows not responding.I waited for some long,but still not respondiing.Somebody please help me.Thankyou.
View ArticleProblem with HSV
Need some help, i am not able to find the desired contour Input:  After applying binary filter: ...
View ArticleHow to eliminate small contours in a binary image?
I am currently working on image processing project. I am using Opencv 3.x.x with VC++. My code: Mat result; vector>contours; vectorhierarchy; int savedContour = -1; double maxArea = 0.0; // Find...
View ArticleCuda Convolve VS filter2D openCV 3.1.0
Hello, I'm using OpenCV 3.1.0 with CUDA on Intel Xeon 5110 @ 1.60 Ghz x2 CPU + Nvidia Quadro 600 + 4GB RAM with Qt on Fedora 23 OS and I'm concerned about convolution speed. What I've got from my test...
View Articleideal crop size for face recognition?
I'm using 144x144 now, but i was wondering if i should cut out the mouth and chin region, so it would not be affected so much with facial hair growth. Right my trained dataset is out of date the moment...
View ArticleCan I use OpenCV to differentiate between flowers
I am new to CV and I have seen some tutorials. I want to make an app that recognizes certain flowers (of same or different colors). Is it feasible using OpenCV? Is there any assumption or restriction...
View ArticleHow i can use Visual Tracker Benchmark with OpenCV
Dear community I've found a useful dataset [Benchmark](http://cvlab.hanyang.ac.kr/tracker_benchmark/) it looks very interesting to use it to evaluate algorithm. Actually, I use function compareHist to...
View Articledrawning labeling components in a image opencv c++
I have the next image.  I used the function connectedComponentsWithStats for find the components of the image. now i want draw only the components with...
View ArticleHow to convert Mat data to byte data in Andorid by using OpenCV
I'd like to convert Mat data to byte data by using OpencV. My expected data format is the following: ex.) data =[112,113,0,1,0,225,........] →1,0,225 is one layer CV_8UC3 but my...
View ArticleHow to detect a perfect black image?
Hi, This is my first post in this forum. I've written a color detection program for detecting Magenta color(only). But now I want to print a text when the magenta color is not present.Which means I...
View ArticleHow to convert String data ｔo byte data without Extra conversion
I asked a question a few hours ago , as the following but The intended question is changed. http://answers.opencv.org/question/120726/how-to-convert-mat-data-to-byte-data-in-andorid-by-using-opencv/ So...
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