Face detection example updated. Dtetection base tracker mode added.

samples/android/face-detection/jni/Android.mk

@@ -0,0 +1,21 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+OPENCV_CAMERA_MODULES:=off
+
+include ../includeOpenCV.mk
+ifeq ("$(wildcard $(OPENCV_MK_PATH))","")
+    #try to load OpenCV.mk from default install location
+    include $(TOOLCHAIN_PREBUILT_ROOT)/user/share/OpenCV/OpenCV.mk
+else
+    include $(OPENCV_MK_PATH)
+endif
+
+LOCAL_SRC_FILES  := DetectionBaseTracker.cpp
+LOCAL_C_INCLUDES := $(LOCAL_PATH) 
+LOCAL_LDLIBS +=  -llog -ldl
+
+LOCAL_MODULE     := detection_base_tacker
+
+include $(BUILD_SHARED_LIBRARY)

samples/android/face-detection/jni/Application.mk

@@ -0,0 +1,3 @@
+APP_STL := gnustl_static
+APP_CPPFLAGS := -frtti -fexceptions
+APP_ABI := armeabi-v7a

samples/android/face-detection/jni/DetectionBaseTracker.cpp

@@ -0,0 +1,53 @@
+#include <DetectionBaseTracker.h>
+#include <opencv2/core/core.hpp> 
+#include <opencv2/contrib/detection_based_tracker.hpp>
+
+#include <string>
+#include <vector>
+
+using namespace std;
+using namespace cv;
+
+vector<Rect> RectFaces;
+
+inline void vector_Rect_to_Mat(vector<Rect>& v_rect, Mat& mat)
+{
+    mat = Mat(v_rect, true);
+}
+
+JNIEXPORT jlong JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeCreateObject
+(JNIEnv * jenv, jclass jobj, jstring jFileName, jint faceSize)
+{
+    const char* jnamestr = jenv->GetStringUTFChars(jFileName, NULL);
+    string stdFileName(jnamestr);
+    DetectionBasedTracker::Parameters DetectorParams;
+    if (faceSize > 0)
+	DetectorParams.minObjectSize = faceSize;
+    return (jlong)new DetectionBasedTracker(stdFileName, DetectorParams);
+}
+
+JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeDestroyObject
+(JNIEnv * jenv, jclass jobj, jlong thiz)
+{
+    delete (DetectionBasedTracker*)thiz;
+}
+
+JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeStart
+(JNIEnv * jenv, jclass jobj, jlong thiz)
+{
+    ((DetectionBasedTracker*)thiz)->run();
+}
+
+JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeStop
+(JNIEnv * jenv, jclass jobj, jlong thiz)
+{
+    ((DetectionBasedTracker*)thiz)->stop();
+}
+
+JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeDetect
+(JNIEnv * jenv, jclass jobj, jlong thiz, jlong imageGray, jlong faces)
+{
+    ((DetectionBasedTracker*)thiz)->process(*((Mat*)imageGray));
+    ((DetectionBasedTracker*)thiz)->getObjects(RectFaces);
+    vector_Rect_to_Mat(RectFaces, *((Mat*)faces));
+}

samples/android/face-detection/jni/DetectionBaseTracker.h

@@ -0,0 +1,53 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class org_opencv_samples_fd_DetectionBaseTracker */
+
+#ifndef _Included_org_opencv_samples_fd_DetectionBaseTracker
+#define _Included_org_opencv_samples_fd_DetectionBaseTracker
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     org_opencv_samples_fd_DetectionBaseTracker
+ * Method:    nativeCreateObject
+ * Signature: (Ljava/lang/String;F)J
+ */
+JNIEXPORT jlong JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeCreateObject
+  (JNIEnv *, jclass, jstring, jint);
+
+/*
+ * Class:     org_opencv_samples_fd_DetectionBaseTracker
+ * Method:    nativeDestroyObject
+ * Signature: (J)V
+ */
+JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeDestroyObject
+  (JNIEnv *, jclass, jlong);
+
+/*
+ * Class:     org_opencv_samples_fd_DetectionBaseTracker
+ * Method:    nativeStart
+ * Signature: (J)V
+ */
+JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeStart
+  (JNIEnv *, jclass, jlong);
+
+/*
+ * Class:     org_opencv_samples_fd_DetectionBaseTracker
+ * Method:    nativeStop
+ * Signature: (J)V
+ */
+JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeStop
+  (JNIEnv *, jclass, jlong);
+
+/*
+ * Class:     org_opencv_samples_fd_DetectionBaseTracker
+ * Method:    nativeDetect
+ * Signature: (JJJ)V
+ */
+JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBaseTracker_nativeDetect
+  (JNIEnv *, jclass, jlong, jlong, jlong);
+
+#ifdef __cplusplus
+}
+#endif
+#endif