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Face detection example updated. Dtetection base tracker mode added.

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This commit is contained in:
Alexander Smorkalov 2012-05-22 12:21:26 +00:00
parent 9bddac1099
commit b422d078f8
8 changed files with 280 additions and 24 deletions
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10
samples/android/face-detection/CMakeLists.txt
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@ -1,6 +1,14 @@
set(sample example-face-detection)
add_android_project(${sample} "${CMAKE_CURRENT_SOURCE_DIR}" LIBRARY_DEPS ${OpenCV_BINARY_DIR} SDK_TARGET 11 ${ANDROID_SDK_TARGET})
if(BUILD_FAT_JAVA_LIB)
set(native_deps opencv_java)
ocv_include_modules(opencv_contrib)
else()
set(native_deps opencv_contrib)
endif()
add_android_project(${sample} "${CMAKE_CURRENT_SOURCE_DIR}" LIBRARY_DEPS ${OpenCV_BINARY_DIR} SDK_TARGET 11 ${ANDROID_SDK_TARGET} NATIVE_DEPS ${native_deps})
if(TARGET ${sample})
add_dependencies(opencv_android_examples ${sample})
endif()

21
samples/android/face-detection/jni/Android.mk Normal file
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@ -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)

3
samples/android/face-detection/jni/Application.mk Normal file
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@ -0,0 +1,3 @@
APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := armeabi-v7a

53
samples/android/face-detection/jni/DetectionBaseTracker.cpp Normal file
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@ -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));
}

53
samples/android/face-detection/jni/DetectionBaseTracker.h Normal file
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@ -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

47
samples/android/face-detection/src/org/opencv/samples/fd/DetectionBaseTracker.java Normal file
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@ -0,0 +1,47 @@
package org.opencv.samples.fd;
import org.opencv.core.Mat;
import org.opencv.core.MatOfRect;
public class DetectionBaseTracker
{
public DetectionBaseTracker(String filename, int faceSize)
{
mNativeObj = nativeCreateObject(filename, faceSize);
}
public void start()
{
nativeStart(mNativeObj);
}
public void stop()
{
nativeStop(mNativeObj);
}
public void detect(Mat imageGray, MatOfRect faces)
{
nativeDetect(mNativeObj, imageGray.getNativeObjAddr(), faces.getNativeObjAddr());
}
public void release()
{
nativeStop(mNativeObj);
nativeDestroyObject(mNativeObj);
mNativeObj = 0;
}
protected long mNativeObj;
protected static native long nativeCreateObject(String filename, int faceSize);
protected static native void nativeDestroyObject(long thiz);
protected static native void nativeStart(long thiz);
protected static native void nativeStop(long thiz);
protected static native void nativeDetect(long thiz, long inputImage, long resultMat);
static
{
System.loadLibrary("detection_base_tacker");
}
}

26
samples/android/face-detection/src/org/opencv/samples/fd/FdActivity.java
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@ -16,13 +16,18 @@ public class FdActivity extends Activity {
private MenuItem mItemFace40;
private MenuItem mItemFace30;
private MenuItem mItemFace20;
private MenuItem mItemType;
private FdView mView;
public static float minFaceSize = 0.5f;
private int mDetectorType = 0;
private String[] mDetectorName;
public FdActivity() {
Log.i(TAG, "Instantiated new " + this.getClass());
mDetectorName = new String[2];
mDetectorName[0] = "Cascade";
mDetectorName[1] = "DBT";
}
@Override
@ -57,6 +62,7 @@ public class FdActivity extends Activity {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
mView = new FdView(this);
mView.setDtetectorType(mDetectorType);
setContentView(mView);
}
@ -67,6 +73,8 @@ public class FdActivity extends Activity {
mItemFace40 = menu.add("Face size 40%");
mItemFace30 = menu.add("Face size 30%");
mItemFace20 = menu.add("Face size 20%");
mItemType = menu.add(mDetectorName[mDetectorType]);
return true;
}
@ -74,13 +82,19 @@ public class FdActivity extends Activity {
public boolean onOptionsItemSelected(MenuItem item) {
Log.i(TAG, "Menu Item selected " + item);
if (item == mItemFace50)
minFaceSize = 0.5f;
mView.setMinFaceSize(0.5f);
else if (item == mItemFace40)
minFaceSize = 0.4f;
mView.setMinFaceSize(0.4f);
else if (item == mItemFace30)
minFaceSize = 0.3f;
mView.setMinFaceSize(0.3f);
else if (item == mItemFace20)
minFaceSize = 0.2f;
mView.setMinFaceSize(0.2f);
else if (item == mItemType)
{
mDetectorType = (mDetectorType + 1) % mDetectorName.length;
item.setTitle(mDetectorName[mDetectorType]);
mView.setDtetectorType(mDetectorType);
}
return true;
}
}

91
samples/android/face-detection/src/org/opencv/samples/fd/FdView.java
View File

@ -23,10 +23,48 @@ import android.view.SurfaceHolder;
class FdView extends SampleCvViewBase {
private static final String TAG = "Sample::FdView";
private Mat mRgba;
private Mat mGray;
private Mat mRgba;
private Mat mGray;
private File mCascadeFile;
private CascadeClassifier mCascade;
private DetectionBaseTracker mTracker;
private CascadeClassifier mCascade;
public final int CASCADE_DETECTOR = 0;
public final int DBT_DETECTOR = 1;
private int mDetectorType = CASCADE_DETECTOR;
public static int mFaceSize = 200;
public void setMinFaceSize(float faceSize)
{
int height = mGray.rows();
if (Math.round(height * faceSize) > 0);
{
mFaceSize = Math.round(height * faceSize);
}
mTracker.release();
mTracker = new DetectionBaseTracker(mCascadeFile.getAbsolutePath(), mFaceSize);
}
public void setDtetectorType(int type)
{
if (mDetectorType != type)
{
mDetectorType = type;
if (type == DBT_DETECTOR)
{
Log.i(TAG, "Detection Base Tracker enabled");
mTracker.start();
}
else
{
Log.i(TAG, "Cascade detectior enabled");
mTracker.stop();
}
}
}
public FdView(Context context) {
super(context);
@ -34,8 +72,8 @@ class FdView extends SampleCvViewBase {
try {
InputStream is = context.getResources().openRawResource(R.raw.lbpcascade_frontalface);
File cascadeDir = context.getDir("cascade", Context.MODE_PRIVATE);
File cascadeFile = new File(cascadeDir, "lbpcascade_frontalface.xml");
FileOutputStream os = new FileOutputStream(cascadeFile);
mCascadeFile = new File(cascadeDir, "lbpcascade_frontalface.xml");
FileOutputStream os = new FileOutputStream(mCascadeFile);
byte[] buffer = new byte[4096];
int bytesRead;
@ -45,14 +83,15 @@ class FdView extends SampleCvViewBase {
is.close();
os.close();
mCascade = new CascadeClassifier(cascadeFile.getAbsolutePath());
mCascade = new CascadeClassifier(mCascadeFile.getAbsolutePath());
if (mCascade.empty()) {
Log.e(TAG, "Failed to load cascade classifier");
mCascade = null;
} else
Log.i(TAG, "Loaded cascade classifier from " + cascadeFile.getAbsolutePath());
Log.i(TAG, "Loaded cascade classifier from " + mCascadeFile.getAbsolutePath());
cascadeFile.delete();
mTracker = new DetectionBaseTracker(mCascadeFile.getAbsolutePath(), 0);
cascadeDir.delete();
} catch (IOException e) {
@ -77,16 +116,29 @@ class FdView extends SampleCvViewBase {
capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_GREY_FRAME);
if (mCascade != null) {
int height = mGray.rows();
int faceSize = Math.round(height * FdActivity.minFaceSize);
MatOfRect faces = new MatOfRect();
mCascade.detectMultiScale(mGray, faces, 1.1, 2, 2 // TODO: objdetect.CV_HAAR_SCALE_IMAGE
, new Size(faceSize, faceSize), new Size());
for (Rect r : faces.toArray())
Core.rectangle(mRgba, r.tl(), r.br(), new Scalar(0, 255, 0, 255), 3);
MatOfRect faces = new MatOfRect();
if (mDetectorType == CASCADE_DETECTOR)
{
if (mCascade != null) {
mCascade.detectMultiScale(mGray, faces, 1.1, 2, 2 // TODO: objdetect.CV_HAAR_SCALE_IMAGE
, new Size(mFaceSize, mFaceSize), new Size());
}
}
else if (mDetectorType == DBT_DETECTOR)
{
if (mTracker != null)
{
mTracker.detect(mGray, faces);
}
}
else
{
Log.e(TAG, "Detection method is not selected!");
}
for (Rect r : faces.toArray())
Core.rectangle(mRgba, r.tl(), r.br(), new Scalar(0, 255, 0, 255), 3);
Bitmap bmp = Bitmap.createBitmap(mRgba.cols(), mRgba.rows(), Bitmap.Config.RGB_565/*.ARGB_8888*/);
@ -110,9 +162,14 @@ class FdView extends SampleCvViewBase {
mRgba.release();
if (mGray != null)
mGray.release();
if (mCascadeFile != null)
mCascadeFile.delete();
if (mTracker != null)
mTracker.release();
mRgba = null;
mGray = null;
mCascadeFile = null;
}
}
}