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2014-02-28 03:23:26 -0600 | asked a question | Analyse features of the connected components with histogram with opencv and c++ Hi, I found many example working histogram in opencv, but they are mostly working on images. For my case, I found each connected components in my image. From these connected components, I calculated their area(); boundingbox(); density(); Thus, I stored value of each features (area, height and density) in each array (arr_area, arr_height, arr_density). I want to analyse those features in histogram
So I believe histogram can show all these information. How can I build these histograms in opencv c++? I.e :
Thank |
2014-02-25 04:35:35 -0600 | asked a question | Effecient ways to merge blob whose position inside another blob using cvbloblib I basically want to remove all blobs whose positions insides another blobs. I use the cvbloblib . I can get all the blobs; however, the library basically detect all blob even the position of those blob inside another. I think of using iterative ways to detect if each blob inside another and merge them together. However there are some issues :
Do you have any ways to merge those blobs inside ? |
2014-02-21 08:43:10 -0600 | asked a question | How to use clustering with opencv c++ to classify the connected component based on the area and height Hi, with opencv c++, I want to do clustering to classify the connected components based on the area and height. I do understand the concept of the clustering but i have hard time to implement it in opencv c++. In the opencv http://docs.opencv.org/modules/core/doc/clustering.html There is a clustering methods kmeans Most of the website I searched, they just explain the concept and parameters of the kmeans function in opencv c++ and most of them were copied from the opencv document website. There is also good example here but it was implemented in Python http://docs.opencv.org/trunk/doc/py_tutorials/py_ml/py_kmeans/py_kmeans_opencv/py_kmeans_opencv.html?highlight=kmeans As i mentioned above, I have all the connected components and i can calculate areas and height of each connect components. I want to use clustering to distinguish between connected components. For instance, with k-means methods i would use k=2. Thank.. |
2014-02-20 06:46:09 -0600 | commented answer | How to link opencv and other dll files to output exe of visual studio 2013 thank @tuannhtn could you describe the steps from scratch ? I am new with cmake, opencv and c++ ... All i know is in vs2013 after we compile the project we could get the exe file. i download opencv2.4.7.2.exe i install it and put in c:/opencv and when i create the project in vs2013 i just configure the path of linker and dependencies. |
2014-02-18 09:12:24 -0600 | commented answer | Error Exception Handling For Cv::Rect opencv in C++ The last two check, i tried to avoid the error when i increase the width and heigth of the rect where the component are too near to the border For the component at the most right near the border if I increase the width it will be error. The same thing for the height in case the component is at the bottom near the border |
2014-02-17 10:20:11 -0600 | asked a question | Error Exception Handling For Cv::Rect opencv in C++ I have bounding box and I want to crop image with this bounding box. However I want to increase the size of the bounding box, so I do For the component at the most right near the border if I increase the width it will be error. The same thing for the height in case the component is at the bottom near the border Are there any ways to handle this exception? |
2014-02-17 09:25:49 -0600 | commented answer | Remove black border lines around image after scan with opencv c++ well, 4 nested loops will affect my program's performances |
2014-02-17 03:03:25 -0600 | asked a question | Remove black border lines around image after scan with opencv c++ I have tiff images. After scan those images, there are long black lines around the the borders. I manualy crop the image with increase x += 50; y += 50; width -= 100; heigth -= 100 With above approache, I can crop the images. I want to ask if there is any way i could remove it autometically without tunning the parameters of x, y, width and heigth such as image enhancement? Thank EDITED
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2014-02-13 08:47:12 -0600 | commented question | How to link opencv and other dll files to output exe of visual studio 2013 @GilLevi I tried to copy dll put the same location as my exe files but it not works |
2014-02-13 07:06:53 -0600 | asked a question | How to link opencv and other dll files to output exe of visual studio 2013 I am new with visual studio, opencv. I am using visual studio 2013, opencv and c++ for my project. I configured (copied path) the opencv and other library to my computer environment system. After run the project in visual studio, normally, there will be an exe file in the project. I can copy the exe file in the project folder and copy to other place in my computer and it will run normally. This is because my computer environment systems are configured with opencv and other library. I want to do the same thing with other computers BUT I do not want to manually configure each computer with opencv and other libraries. Are there any ways that I can do to link everythings all in exe file after run the project in visual studio 2013 so that I can run the exe without depend on the path of libaries and opencv? Thank you. |
2014-02-11 02:36:10 -0600 | commented answer | Implementation Run Length Smoothing Algorithm in C++ @Luca Thank you, i already fix the issue, Just like you said I have some problems with indexs. However, I still not satify with the implementation since I only use nested loop rather than access in matrice way. what you think? |
2014-02-07 09:17:40 -0600 | commented answer | Using colone Matlab in c++ opencv Mat Structure @Guanta you are right, I edited the C++ code I want to write c++ code to do the same thing as this matlab code tmpImg(i,j-one_count:j-1)=0; |
2014-02-07 08:40:09 -0600 | received badge | ● Student (source) |
2014-02-07 06:50:21 -0600 | commented answer | Using colone Matlab in c++ opencv Mat Structure Thank, @Guanta, i edited the question please have a look |
2014-02-06 09:59:40 -0600 | commented answer | Using colone Matlab in c++ opencv Mat Structure Error C2039: 'setTo' : is not a member of 'cv::Range' |
2014-02-06 09:35:40 -0600 | commented answer | Using colone Matlab in c++ opencv Mat Structure Thank, I upload my whole code in new question where there are both Matlab and C++ http://answers.opencv.org/question/27866/implementation-run-length-smoothing-algorithm-in-c/ |
2014-02-06 09:29:49 -0600 | asked a question | Implementation Run Length Smoothing Algorithm in C++ This is my old question related to RLSA in C++, but I havent got any help yet. I tried to implement the code from Matlab to C++ The description of this algorithm : http://crblpocr.blogspot.fr/2007/06/run-length-smoothing-algorithm-rlsa.html http://crblpocr.blogspot.fr/2007/06/determination-of-run-length-smoothing.html There is RLSA implementation in Matlab by this thread : http://mathworks.cn/matlabcentral/newsreader/view_thread/318198 MatLabCode I tried to implement in C++ Code This time no error but the result is not expected .. The issue is the way i want to write c++ code the same thing as Matlab C++ Anyidea??? Another thing is in Matlab the index start from 1 while C++ start from 0. Thank |
2014-02-06 09:06:57 -0600 | asked a question | Using colone Matlab in c++ opencv Mat Structure Hi everyone, Are there any ways in c++ I can access Mat structure like colon in Matlab. in Matlab how can I write the same thing in C++? EDIT According to Running length smoothing algorithm The whole code MatLabCode I tried to implement in C++ Code This time no error but the result is not expected .. The issue is the way i want to write c++ code the same thing as Matlab C++ Anyidea??? Thank |
2014-02-05 07:07:12 -0600 | commented question | Implementation Run Length Smoothing Algorithm in C++ @Guanta thank for your advice, frankly speaking I could convert the second program to c++ but it takes a bit long since it uses the nested loop that I do not want. For the first program on the other hand, it manipulate the image in vector ways and since I am new with opencv and c++ that is why I think maybe those who are expert in these fields could help |
2014-02-04 08:01:28 -0600 | asked a question | Implementation Run Length Smoothing Algorithm in C++ I am new with C++ and OpenCV. I came across an interesting article: http://crblpocr.blogspot.fr/2007/06/run-length-smoothing-algorithm-rlsa.html http://crblpocr.blogspot.fr/2007/06/determination-of-run-length-smoothing.html There is RLSA implementation in Matlab by this thread : http://mathworks.cn/matlabcentral/newsreader/view_thread/318198 In link above : Matlab Code Vector Version by Bruno Luong Normal Version by Yumnam Kirani Singh Anyone has experience in C++ could implement it with OpenCV, C++ using Mat Structure?? Thank |
2014-02-03 05:40:18 -0600 | received badge | ● Editor (source) |
2014-02-03 05:28:14 -0600 | asked a question | Implement imfill matlab in c++ and opencv Hi I am very new with opencv and c++. I tested some functions with Matlab. In matlab, I used imfill (BW2 = imfill(BW,'holes')) to the image to fill the holes of the images. I searched in this forum and I encountered this question Fill holes of a binary image; the accepted answer by HD_Mouse. His Answer : Instead of using this binarisation I use otsu binarisation from this source http://kristou.com/2009/08/25/opencv-otsu-thresholding/ I applied this to my image but only some holes are fill while others holes are not filled. I think it might be because of the binarisation. Any idea?? Thank |