OpenCV 3.0 RGBD depth cleaner
Hello everyone, I am having some difficulties to use the function DepthCleaner () with method = DEPTH_CLEANER_NIL to clean a depth image. This function is released in OpenCV 3.0.0. So, it's too early...
View Article*** glibc detected *** : free() : invalid pointer c++ [duplicate]
I'm having some trouble when trying to execute the following code :https://github.com/Itseez/opencv/blob/master/samples/cpp/facedetect.cpp With this modification in memory allocation: for(;;) { //...
View ArticleHow to capture live stream from ION Air Pro Plus HD Camera?
I am doing a project regarding image processing and people counting and was wondering, how exactly can I plug my ION AIR PRO PLUS video recording device (similar to a goPro), and use it as my...
View ArticleExtract common part of images
Hi, I'm writing a program that find differences between images. For now, I'm finding features with AKAZE, so I've the common point of the 2 images. The problem is that these 2 images have only a part...
View ArticleOpenCV4Android - Reduce function?
So I know that C, C++ and Python have the reduce function: http://docs.opencv.org/modules/core/doc/operations_on_arrays.html#reduce But I can't seem to get it working on Android with OpenCV4Android....
View ArticleWhy the output of "Retina Magno" changed consistently when applying retina to...
I have tried to apply retina to a single picture with default parameters. As the cycle index being increased, the output of "Retina Magno" changed consistently and at last the output was a black...
View Articlehow to stream h264 video with rtsp in opencv- partially answered
I've been struggling with this for a few months now and thought I should consolidate my efforts and "research" into this question all in one place. Mainly I am doing this to help those that have this...
View ArticleIP camera video corruption - solutions?
Has anyone been able to get an HD (720p or higher) IP camera working with OpenCV consistently and reliably? If so, did you use the standard VideoCapture interface or something else? Many OpenCV users...
View ArticleRead h264 stream from an IP camera
Currently, I am trying to use opencv to read a video from my Canon VB-H710F camera. For this purpose I tried two different solutions: SOLUTION 1: Read the stream from rtsp address VideoCapture cam...
View ArticleVideoCapture.read() count doesn't match CAP_PROP_FRAME_COUNT or output by FFMPEG
When I check my video frame count using CAP_PROP_FRAME_COUNT, it says there are 300 frames. Similarly, when I use FFMPEG to output the frames of the video, I also get 300 frames. However, when I use a...
View ArticleOPENCV2.4.9 with IP cam have h246 error
CODE:--------------------------------------------------------------- int main(){ CvCapture...
View Articleip camera h264 error while decoding
Capture video from network camera. VideoCapture cam0("rtsp://admin:12345@192.168.1.65/MPEG-4/ch1/main/av_stream "); if (!cam0.isOpened()){ std::cout << "camera open faild"; return -1; } Mat...
View ArticleHow to fix H264 decoding?
Hi I'm using version 246 of openCV. My application plays multiple IPCamera streams via RTSP. I understand it uses ffmpeg to load the rtsp url I provide. I have two IP cameras, one of them works well,...
View ArticleHow can I use LMSolver to solve a non linear system?
Hi, I need to solve a non-linear system for image processing in opencv. I have found that in file modules\calib3d\src\fundam.cpp there is a code using LMSolver (define in code...
View Articleimproving functionality of imread
hi all, i want to share my way to use libjpeg loading options. here my addition to source https://github.com/Itseez/opencv/pull/4162/files by this change i can set "scale_denom" parameter and load jpeg...
View ArticleDetect object in noisy image
Hi all, as the title says, I need to detect objects in noisy images. Here's how my program should work: 1. Align 2 images 2. use `absdiff` to find the diferences 3. bound the differences (in my case...
View ArticlePossible memory leak in cvtColor
Dear all, I'm running some tests with cvtColor and valgrind reports a memory leak. Some information about the environment: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu...
View ArticleJavaCV cvMinAreaRect2
I’m trying to get min area rectangle from list of Points, but the rectangle I’m getting is not what I’m expecting. I’m using JavaCV 0.11. Here is my java code: ArrayList < Point > points = new...
View Articlecomplement 16 bit mat and then convert it to 8 bit
I have 16 bit openCV Mat. I am looking to complement the MAT and then convert it into 8 bit openCV Mat. I have done it in MATLAB but don't know how to do it in openCV. My MATLAB code is: >...
View ArticleAdding "ambiguous" class to SVM
I've trained an SVM to classify images of tags my program can extract, however I used data where I could tell which tag type was which myself visually. Unfortunately, for maybe half the tag images I...
View Article