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OpenCV4Android
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1–30 of 903
This group is read-only (used for announcements only).
All questions should be asked at
answers.opencv.org
All bugs should be reported to
code.opencv.org
OpenCV for And
roid home page:
opencv.org/android
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Aleksey Odinochenko
7/19/13
Q&A
Conversation focal distance from mm to pixels
For my calculations i need the local length in pixels(opencv format). The andriod API
unread,
android
camera
focallength
opencv
Q&A
Conversation focal distance from mm to pixels
For my calculations i need the local length in pixels(opencv format). The andriod API
7/19/13
Andrey Pavlenko
1/17/13
Q&A
Re: after import opencv library, Error won't go away!
In my system these errors disappear after right click on the 'OpenCV Library' project and
unread,
android
eclipse
java
Q&A
Re: after import opencv library, Error won't go away!
In my system these errors disappear after right click on the 'OpenCV Library' project and
1/17/13
Kirill Kornyakov
1/17/13
Q&A
Re: Tegra 3 + OpenCV for Android + with neon only 12% faster
Hello, There might be several reasons of why you don't see the speedup. Let's discuss them
unread,
android
opencv
tegra
Q&A
Re: Tegra 3 + OpenCV for Android + with neon only 12% faster
Hello, There might be several reasons of why you don't see the speedup. Let's discuss them
1/17/13
Andrey Pavlenko
1/17/13
Q&A
Re: OpenCV4Android conversion from MatOfKeyPoint to MatOfPoint2f
We have in plans the creation of docs for Java-specific OpenCV classes. For now let me share a short
unread,
OpenCV4Android
Optical-Flow
android
keypoints
tracking
Q&A
Re: OpenCV4Android conversion from MatOfKeyPoint to MatOfPoint2f
We have in plans the creation of docs for Java-specific OpenCV classes. For now let me share a short
1/17/13
Andrey Pavlenko
1/17/13
Q&A
Re: Android NDK: Unsupported host architecture:
what host OS do you use?
unread,
OpenCV4Android
android
android-opencv
ndk
Q&A
Re: Android NDK: Unsupported host architecture:
what host OS do you use?
1/17/13
jiapei100
, …
Andrey Pavlenko
8
12/19/12
Q&A
Which apk(s) to be installed?
Problem has been solved. I should have installed some orther apk(s)... Suggestions: if the users like
unread,
android
apk
opencv
Q&A
Which apk(s) to be installed?
Problem has been solved. I should have installed some orther apk(s)... Suggestions: if the users like
12/19/12
Andrey Pavlenko
12/17/12
Q&A
Re: templateMatching mattoBitmap opencv for android
The problem is that the `matchTemplate()` result is a float point single channel Mat (CV_32FC1) that
unread,
Mat
android
bitmap
opencv
templateMatching
Q&A
Re: templateMatching mattoBitmap opencv for android
The problem is that the `matchTemplate()` result is a float point single channel Mat (CV_32FC1) that
12/17/12
Alexander Smorkalov
,
Andrey Pavlenko
2
11/12/12
Q&A
Re: [OpenCV4Android] Re: OpenCV 2.4.3 on Android. Work with CameraBridgeViewBase
I guess you need something like this: http://developer.android.com/reference/android/hardware/Camera.
unread,
android
android-opencv
java
Q&A
Re: [OpenCV4Android] Re: OpenCV 2.4.3 on Android. Work with CameraBridgeViewBase
I guess you need something like this: http://developer.android.com/reference/android/hardware/Camera.
11/12/12
Khawar khan
,
Alexander Smorkalov
3
11/9/12
Q&A
Rotated image is not centralized in opencv4android
Thanks for your help.. what I'm doing is that I've rotated an image so its edges were cut off
unread,
OpenCV4Android
android
image
opencv
Q&A
Rotated image is not centralized in opencv4android
Thanks for your help.. what I'm doing is that I've rotated an image so its edges were cut off
11/9/12
Alexander Smorkalov
11/12/12
Q&A
Re: [OpenCV4Android] Are there any guides that walkthrough building an app using native C++ from the ground up?
Hi Roger Lam, It is not OpenCV related question. Use official Android documentation and samples. Also
unread,
JNI
android
java
native
opencv
Q&A
Re: [OpenCV4Android] Are there any guides that walkthrough building an app using native C++ from the ground up?
Hi Roger Lam, It is not OpenCV related question. Use official Android documentation and samples. Also
11/12/12
Khawar khan
,
Alexander Smorkalov
6
11/15/12
Q&A
how do I Change the opacity level of mat?
The problem is in the imread/imwrite parameters. By default the functions read and write only RGB
unread,
Mat
OpenCV4Android
android
Q&A
how do I Change the opacity level of mat?
The problem is in the imread/imwrite parameters. By default the functions read and write only RGB
11/15/12
srikanta mondal
,
Andrey Pavlenko
3
1/4/13
Q&A
Re: Is cvCreateFileCapture supported on android?
Yes, That is right. Now I am able to open the video file using ffmpeg library. However I have faced a
unread,
android
opencv
Q&A
Re: Is cvCreateFileCapture supported on android?
Yes, That is right. Now I am able to open the video file using ffmpeg library. However I have faced a
1/4/13
Kirill Kornyakov
10/10/12
Q&A
Re: How to resize an Image to high resolution image without losing pixels ?
Your should ask this question at the answers.opencv.org. OpenCV doesn't have such functionality,
unread,
OpenCV4Android
android
image-processing
Q&A
Re: How to resize an Image to high resolution image without losing pixels ?
Your should ask this question at the answers.opencv.org. OpenCV doesn't have such functionality,
10/10/12
Putria Febriana
, …
Roman
4
10/2/12
Q&A
Re: [OpenCV4Android] how to detect eyes and face
Hi, I tried some methods for eye detection (template matching, diff matrix + contours, eyemap) and
unread,
OpenCV4Android
android
Q&A
Re: [OpenCV4Android] how to detect eyes and face
Hi, I tried some methods for eye detection (template matching, diff matrix + contours, eyemap) and
10/2/12
Droidkie
,
Andrey Pavlenko
3
9/27/12
Q&A
Static Initialization Problem
i did what you posted but it still doesn't work. here is the log: Trying to get library list
unread,
OpenCV4Android
android
java
opencv
Q&A
Static Initialization Problem
i did what you posted but it still doesn't work. here is the log: Trying to get library list
9/27/12
Alexander Smorkalov
, …
Andrey Pavlenko
3
9/27/12
Q&A
Re: [OpenCV4Android] OpenCV Tutorial 1 - Add OpenCV on API 8
As Alexander stated above, you should build the sample for API 11 target, but if it has MinSdkVersion
unread,
android
camera
canny
java
opencv
Q&A
Re: [OpenCV4Android] OpenCV Tutorial 1 - Add OpenCV on API 8
As Alexander stated above, you should build the sample for API 11 target, but if it has MinSdkVersion
9/27/12
Putria Febriana
,
Andrey Pavlenko
3
9/19/12
Q&A
erorr cannot find class org.opencv.samples.tutorial2.Sample2NativeCamera$
i do it, but still get error 2012/9/18 Andrey Pavlenko <andrey....@itseez.com> if you need
unread,
android
cvFindCornerSubPix
native-code
opencv
samples
Q&A
erorr cannot find class org.opencv.samples.tutorial2.Sample2NativeCamera$
i do it, but still get error 2012/9/18 Andrey Pavlenko <andrey....@itseez.com> if you need
9/19/12
Andrey Kamaev
, …
Andrey Pavlenko
3
9/10/12
Q&A
Re: [OpenCV4Android] openCV support for mobiles lesser than 2.4.2 version
BTW, SIFT is not included into OpenCV4Android SDK v 2.4.2 since it's patented. You need to use
unread,
NDK
android
camera
native-code
opencv
Q&A
Re: [OpenCV4Android] openCV support for mobiles lesser than 2.4.2 version
BTW, SIFT is not included into OpenCV4Android SDK v 2.4.2 since it's patented. You need to use
9/10/12
Karthik
8/28/12
Q&A
Android webservice ksoap2 - byte[] inside pojo Error
I am invoking java soap webservices from my android application using kvm serialization. my pojo
unread,
android
ksoap2
Q&A
Android webservice ksoap2 - byte[] inside pojo Error
I am invoking java soap webservices from my android application using kvm serialization. my pojo
8/28/12
Kirill Kornyakov
3
9/3/12
Q&A
Re: insert image into video
Did you try Imgproc.addWeignted?
unread,
android
Q&A
Re: insert image into video
Did you try Imgproc.addWeignted?
9/3/12
Andrey Kamaev
, …
Alex
6
9/25/12
Q&A
Re: Android samples crashing on HTC One X
The samples built from the trunk are still crashing the same way in dlmalloc. Is there any plan to
unread,
android
opencv
samples
Q&A
Re: Android samples crashing on HTC One X
The samples built from the trunk are still crashing the same way in dlmalloc. Is there any plan to
9/25/12
Rui Marques
8/28/12
Q&A
Re: android OpenCV native camera question
About which forum to use, i guess this group is more suitable to discuss code and bugs (either your
unread,
android
camera
Q&A
Re: android OpenCV native camera question
About which forum to use, i guess this group is more suitable to discuss code and bugs (either your
8/28/12
Karthik
,
Rui Marques
2
8/17/12
Q&A
opencv samples - face detection StrictMode Error
By turning off the StrictMode (joking) :P Now seriously, sorry for my ignorance, but why do you want
unread,
android
opencv
Q&A
opencv samples - face detection StrictMode Error
By turning off the StrictMode (joking) :P Now seriously, sorry for my ignorance, but why do you want
8/17/12
Israel Dejene Gebru
,
nedaa fadhel
4
8/18/12
Q&A
Re: building Image recognition on Android
please can you explain it more , if you dont mind another question my project start tacking a iris
unread,
android
camera
Q&A
Re: building Image recognition on Android
please can you explain it more , if you dont mind another question my project start tacking a iris
8/18/12
Kirill Kornyakov
,
Andrey Pavlenko
2
9/10/12
Q&A
Re: Include OpenCV in android application package
2.4.2 is a version of OpenCV, not Android.
unread,
android
androidcv
canny
image-processing
Q&A
Re: Include OpenCV in android application package
2.4.2 is a version of OpenCV, not Android.
9/10/12
AlexT
8/16/12
Q&A
Re: Unable to build OpenCV 2.4.2 android native samples
In case anyone is interested, I solved the problem. Here's how: 1. I ran eclipse from Cygwin:
unread,
android
opencv
samples
Q&A
Re: Unable to build OpenCV 2.4.2 android native samples
In case anyone is interested, I solved the problem. Here's how: 1. I ran eclipse from Cygwin:
8/16/12
Dmitry
, …
Andrey Pavlenko
4
8/4/12
Q&A
Problems compiling opencv for android from source (Android 4.1.1)
In the end it turned out to be a problem with "ADB install" command. I can no longer use
unread,
android
opencv
source
Q&A
Problems compiling opencv for android from source (Android 4.1.1)
In the end it turned out to be a problem with "ADB install" command. I can no longer use
8/4/12
Philip Lamb
2
7/15/12
New linker error when moving to OpenCV 2.4.2 for Android (NDK, static linking)
OK, another topic on a similar question elsewhere suggested that mbstowcs and wcstombs weren't
unread,
android
link
ndk
opencv
New linker error when moving to OpenCV 2.4.2 for Android (NDK, static linking)
OK, another topic on a similar question elsewhere suggested that mbstowcs and wcstombs weren't
7/15/12
Shishir
, …
He Jibo
12
7/24/12
Q&A
Need help to make my face detection application faster
it looks for the largest connected area of skin color pixels. So whether there is false positives,
unread,
android
opencv
Q&A
Need help to make my face detection application faster
it looks for the largest connected area of skin color pixels. So whether there is false positives,
7/24/12
Andrey Pavlenko
7/12/12
Q&A
Re: which one is better between "opencv android binary package" or "android NDK and JNI"???
OpenCV team delivers OpenCV SDK packages for Android that allow use of OpenCV library in Android
unread,
OpenCV4Android
android
androidcv
binary
opencv
Q&A
Re: which one is better between "opencv android binary package" or "android NDK and JNI"???
OpenCV team delivers OpenCV SDK packages for Android that allow use of OpenCV library in Android
7/12/12