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POHow to load ClassifierCascade in Android using JavaCV?
 

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  1. POHow to load ClassifierCascade in Android using JavaCV?
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    <p>I'm trying to use facial recognition with Android . All the loads are ok , but the <strong>haarcascade_frontalface_alt2.xml</strong> file wich i don't know how to load it using JavaCV. This is the code i have:</p> <pre><code>public static void detectFacialFeatures() { // The cascade definition to be used for detection. // This will redirect the OpenCV errors to the Java console to give you // feedback about any problems that may occur. new JavaCvErrorCallback(); // Load the original image. // We need a grayscale image in order to do the recognition, so we // create a new image of the same size as the original one. IplImage grayImage = IplImage.create(iplImage.width(),iplImage.height(), IPL_DEPTH_8U, 1); // We convert the original image to grayscale. cvCvtColor(iplImage, grayImage, CV_BGR2GRAY); CvMemStorage storage = CvMemStorage.create(); // We instantiate a classifier cascade to be used for detection, using the cascade definition. CvHaarClassifierCascade cascade = new CvHaarClassifierCascade(cvLoad("./haarcascade_frontalface_alt2.xml")); // We detect the faces. CvSeq faces = cvHaarDetectObjects(grayImage, cascade, storage, 1.1, 1, 0); Log.d("CARAS","Hay "+faces.total()+" caras ahora mismo"); } </code></pre> <p>The problem is here</p> <blockquote> <p>CvHaarClassifierCascade(cvLoad("./haarcascade_frontalface_alt2.xml"));</p> </blockquote> <p>I have tried putting the xml file it into the /assets folder , but i have no idea of how must i load it. It's always giving me the next error:</p> <pre><code>03-26 17:31:25.385: E/cv::error()(14787): OpenCV Error: Null pointer (Invalid classifier cascade) in CvSeq* cvHaarDetectObjectsForROC(const CvArr*, CvHaarClassifierCascade*, CvMemStorage*, std::vector&lt;int&gt;&amp;, std::vector&lt;double&gt;&amp;, double, int, int, CvSize, CvSize, bool), file /home/saudet/projects/cppjars/OpenCV-2.4.4/modules/objdetect/src/haar.cpp, line 1514 </code></pre> <p>... looking more near at the error it points to this code line:</p> <blockquote> <p>CvSeq faces = cvHaarDetectObjects(grayImage, cascade, storage, 1.1, 1, 0);</p> </blockquote> <p>That's why i'm pretty sure that the problem comes from the haarcascade_frontalface_alt2.xml load.</p> <p>Thanks for your help.</p> <p><strong>P.D: I want to include the cascade into the apk not in sdcard .</strong></p>
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