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2016-11-30 12:15:04 -0600 | commented question | SURF and SIFT algorithms doesn't work in OpenCV 3.0 Java for android I am sorry for the disturbance but i have an other question. which types of texture or shape descriptors opencv can use |
2016-11-30 09:53:49 -0600 | commented question | SURF and SIFT algorithms doesn't work in OpenCV 3.0 Java for android Concerning BOW is it supported by java ? |
2016-11-30 09:27:58 -0600 | commented question | SURF and SIFT algorithms doesn't work in OpenCV 3.0 Java for android i put my code. Can you help me |
2016-11-30 08:11:49 -0600 | asked a question | SURF and SIFT algorithms doesn't work in OpenCV 3.0 Java for android I tried to use Sift or surf descriptors for machine learning in an android application. But when i run the program i get this error. OpenCV Error: Bad argument (Specified feature detector type is not supported.) in cv::javaFeatureDetector::create My code: |
2016-06-04 04:51:58 -0600 | commented question | How to normalize image with opencv and java I don't know what normalization means exactly but i want to find a solution for theses"interpolation of some kind". |
2016-06-04 01:57:00 -0600 | commented question | How to normalize image with opencv and java if i will resize the image i think that some informations from the image will change or will deleted so i thinked to normalized the image to preserve all informations and to get the identical image but with a smaller size or bigger size |
2016-06-03 16:38:18 -0600 | asked a question | How to normalize image with opencv and java I want to normalize an image using opencv and java before resizing it (changing size will make some changes in the image so i should normalized it this is the reason for choosing normalization).How can i proceed please. Thanks in advance |
2016-05-30 14:18:38 -0600 | asked a question | Neural network implementation using opencv and java I should use opencv with java language but when i tried to implement neural network i got errors in this instruction ann.train(trainData, Ml.ROW_SAMPLE,train_labels); this is the error: 05-30 19:40:20.003: E/cv::error()(12928): OpenCV Error: Unspecified error (The network has not been created. Use method create or the appropriate constructor) in void cv::ml::ANN_MLPImpl::prepare_to_train(const cv::Mat&, const cv::Mat&, cv::Mat&, int), file /home/maksim/workspace/android-pack/opencv/modules/ml/src/ann_mlp.cpp, line 661 |
2016-04-28 11:41:43 -0600 | commented question | opencv error when trying to submat an image in an android project The error is at the end of the code (i delete the first submat at the begining ).it seems like an infinite loop .i found all the "su" mat stored in Lignes directory but the application stopped. My aim here is to sort extracted rect ligne per ligne and for each ligne i should sort the rect in the x axis. |
2016-04-27 08:55:00 -0600 | asked a question | opencv error when trying to submat an image in an android project I tried to detect contours in an image ,draw a bounding box for each contours ,put all rect.x rect.y rect.height in an array lists ,sorting them and finally draw a rectangle for each lignes in the image .but i got this error(the error is here : Imgcodecs.imwrite("/storage/emulated/0/DCIM/Lignes/sub"+j+".png",su); 04-27 14:33:43.818: E/cv::error()(25787): OpenCV Error: Assertion failed (0 <= _rowRange.start && _rowRange.start <= _rowRange.end && _rowRange.end <= m.rows) in cv::Mat::Mat(const cv::Mat&, const cv::Range&, const cv::Range&), file /home/maksim/workspace/android-pack/opencv/modules/core/src/matrix.cpp, line 456 |
2016-04-20 09:15:42 -0600 | asked a question | How to sort bounding boxes in x-axis with java and android I succeed to find contours and drawing bounding boxes but when i extract the letters in the bounding boxes they was saved randomly .Is there a method that order bounding boxes from left to right .this is my code : |
2016-04-05 09:02:44 -0600 | commented question | how to find all the objects in the picture with one template using opencv and java for android I edit it :) Can you help me please |
2016-04-05 08:33:39 -0600 | asked a question | how to find all the objects in the picture with one template using opencv and java for android i tried to do a code that find all objects using a template .The logCat don't give me any errors but the application stopped this is the code .Please help me |
2016-04-04 11:34:55 -0600 | asked a question | matching one template with multiple object with opencv and java for android i tried to do a code that find all objects using a template .The logCat don't give me any errors but the application stopped this is the code .Please help me |
2016-04-02 18:57:12 -0600 | asked a question | android opencv template matching error I tested an android application for template matching using opencv and java from this link link text but when i run it i got theses errors How can i resolve them |
2016-04-02 11:53:03 -0600 | commented answer | android opencv template matching error i am sorry but what you mean by " you have to actively load the native so's" and i have opencv manager app installed and where exactly i should move them .i am really sorry but i am a beginner in opencv and android |
2016-04-02 11:34:40 -0600 | commented answer | android opencv template matching error i am sorry but i add all the native libs to libs folder under my project and i put the 3 pictures under res /drawable-mdpi (the picture are png forms) and i run the app there no error but the app stopped |
2016-04-02 10:23:25 -0600 | commented question | android opencv template matching error i add the logout error and there is an other error cannot load opencv library I try this also it doesnt work http://stackoverflow.com/questions/17... |
2016-04-02 10:10:53 -0600 | asked a question | android opencv template matching error I found this code and when i run it a lot of errors occured. 04-02 17:04:42.614: D/PhoneWindow(9887): FMB installDecor mIsFloating : false 04-02 17:04:42.614: D/PhoneWindow(9887): FMB installDecor flags : 8454400 04-02 17:04:42.614: D/OpenCV/StaticHelper(9887): Trying to get library list 04-02 17:04:42.624: E/OpenCV/StaticHelper(9887): OpenCV error: Cannot load info library for OpenCV 04-02 17:04:42.624: D/OpenCV/StaticHelper(9887): Library list: "" 04-02 17:04:42.624: D/OpenCV/StaticHelper(9887): First attempt to load libs 04-02 17:04:42.624: D/OpenCV/StaticHelper(9887): Trying to init OpenCV libs 04-02 17:04:42.624: D/OpenCV/StaticHelper(9887): Trying to load library opencv_java3 04-02 17:04:42.624: D/OpenCV/StaticHelper(9887): Cannot load library "opencv_java3" 04-02 17:04:42.624: W/System.err(9887): java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.example.match-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]] couldn't find "libopencv_java3.so" 04-02 17:04:42.624: W/System.err(9887): at java.lang.Runtime.loadLibrary(Runtime.java:366) 04-02 17:04:42.624: W/System.err(9887): at java.lang.System.loadLibrary(System.java:989) 04-02 17:04:42.624: W/System.err(9887): at org.opencv.android.StaticHelper.loadLibrary(StaticHelper.java:64) 04-02 17:04:42.624: W/System.err(9887): at org.opencv.android.StaticHelper.initOpenCVLibs(StaticHelper.java:95) 04-02 17:04:42.624: W/System.err(9887): at org.opencv.android.StaticHelper.initOpenCV(StaticHelper.java:39) 04-02 17:04:42.624: W/System.err(9887): at org.opencv.android.OpenCVLoader.initDebug(OpenCVLoader.java:77) 04-02 17:04:42.624: W/System.err(9887): at com.example.match.MainActivity.onCreate(MainActivity.java:23) 04-02 17:04:42.624: W/System.err(9887): at android.app.Activity.performCreate(Activity.java:6374) 04-02 17:04:42.624: W/System.err(9887): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119) 04-02 17:04:42.624: W/System.err(9887): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2752) 04-02 17:04:42.624: W/System.err(9887): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2873) 04-02 17:04:42.624: W/System.err(9887): at android.app.ActivityThread.access$900(ActivityThread.java:181) 04-02 17:04:42.624: W/System.err(9887): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1482) 04-02 17:04:42.624: W/System.err(9887): at android.os.Handler.dispatchMessage(Handler.java:102) 04-02 17:04:42.624: W/System.err(9887): at android.os.Looper.loop(Looper.java:145) 04-02 17:04:42.624: W/System.err(9887): at android.app.ActivityThread.main(ActivityThread.java:6145) 04-02 17:04:42.624: W/System.err(9887): at java.lang.reflect.Method.invoke(Native Method) 04-02 17:04:42.624: W/System.err(9887): at java.lang.reflect.Method.invoke(Method.java:372) 04-02 17:04:42.624: W/System.err(9887): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller ... (more) |
2016-04-01 07:09:12 -0600 | asked a question | Comparing bounding box with an image from sqlite database I would do a part of an android application that compare image in bounding bow with images in sqlite database and if it finds an image that looks like one of the images in the database it will write the name of the image (with this function "Imgproc.putText(....) ").I think that i can use template matching but i don't know how Can someone help me |
2016-03-28 05:21:27 -0600 | commented question | how can i use opencv to compare charaters in a picture and characters in a database :( i search a lot in the internet but i don't find any android example that use opencv machine learning for letters recognition .I search since 3 days but i don't found .Can you help me please |
2016-03-28 05:12:53 -0600 | commented question | how can i use opencv to compare charaters in a picture and characters in a database i am sorry i resolve it because i import android.graphics.Rect; instead of org.opencv.core.Rect; |
2016-03-28 05:08:04 -0600 | commented question | how can i use opencv to compare charaters in a picture and characters in a database yes ,i use opencv 3.1.0 !! |
2016-03-28 05:00:24 -0600 | commented question | how can i use opencv to compare charaters in a picture and characters in a database how can i implement this example .i just copied the code into my activity (error in this instruction " Mat num = digits.submat(new Rect(c20,r20,20,20));" submat isn't known ).What are the steps that i should follow to try this example |
2016-03-25 06:55:30 -0600 | commented question | how can i use opencv to compare charaters in a picture and characters in a database I use opencv 3.1.0 for android I create a database that contains for each letter its equivalents in latin language I seperate my characters in my image by puting each letter in a rectangle (I use theses instructions: Rect rect = Imgproc.boundingRect(points); Imgproc.rectangle(gray, new Point(rect.x,rect.y), new Point(rect.x+rect.width,rect.y+rect.height), new Scalar(255,0,0),2); My project aims to capture an image (contains latin text) with the android camera ,treat the image (extract letters) and then compare this letters with letters in database to translate the text from latin to english |
2016-03-25 06:37:32 -0600 | commented question | how can i use opencv to compare charaters in a picture and characters in a database Is there examples that i can try to understand how to use machine learning in my case ? |
2016-03-25 04:28:10 -0600 | asked a question | how can i use opencv to compare charaters in a picture and characters in a database My project aims to extract letters from a picture taken with the mobile camera and compare them with letters in the database(pictures of letters ) and it should know each letter .For example if i tell the program to color the letter N with red it should know all the letters N present in the picture and color them (In french we call that "système d'apprentissage" |
2016-03-24 07:22:14 -0600 | edited question | How can i use opencv FloodFill with java? I tried to use floodfill in my source code but the application doesn't work and this is my code : `final Bitmap bitmap = BitmapFactory.decodeFile(fileUri.getPath(),options); Mat tmp = new Mat(bitmap.getWidth(), bitmap.getHeight(), CvType.CV_8UC1); Utils.bitmapToMat(bitmap, tmp); Mat gray = new Mat(bitmap.getWidth(), bitmap.getHeight(), CvType.CV_8UC1); Imgproc.cvtColor(tmp, gray, Imgproc.COLOR_RGB2GRAY); Photo.fastNlMeansDenoising(gray, gray,5,7,21); Mat stub = new Mat(gray.rows() + 2,gray.cols() + 2, CvType.CV_8U); Imgproc.floodFill(gray,stub, new Point(0, 0), new Scalar(255, 255, 255)); Utils.matToBitmap(stub, bitmap);` |