lulalehaha's profile - activity

Hello everyone, I am really a freshman in this area. I try to use the Videocapture Class in Opencv 3.0.0., but it doesn't work. The following is my code.
After running on my smart phone, the log prints "123" but no "456". It seems that opening video file failed but the video file do exist. It's so strange!! Please help me if you think of any possibility. Thanks a lot :)

My Android studio version is 1.3. My Opencv4Android SDK version is 3.0.0. And the following is my log.

Hello everyone, as the title, my opencv app doesn't work on the smart phone with android 5.0. The app works on Android 4.4. After debugging it with LOG, i found that the problem is happened at this line.

I try to search this problem on the internet, and so many people get problem about OpenCV Service Intent must be explicit, Android 5.0. So, i have already modified my class AsyncServiceHelper, but it still not working. On the below, is my logcat. Please help me thx a lot.

![image description](/upfiles/14362651322590814.png)

Hello dear developers,
I am very fresh in this area. I have two years experience developing C++ based opencv programs, and half a year developing normal and simple android app. But i just start up for learn about opencv for android. Here is my question. I have already traced the sample code to learn how to use opencv camera and simple image processing. But as i know, in the early version , opencv for android didn't support "Videocapture" as C++ based opencv library did. And I just found the opencv java api for videocapture. http://docs.opencv.org/java/ But the open() function in class Videocapture doesn't request the parameter of filename like C++ based opencv library, and the constructor of it either. The information on the internet is very poor. Is anyone can teach me how to read the image frame by frame from a existing video frame?? Or, where i can get help? Thanks very much!!!!!!!!!