基于Dragonboard 410c android系統(tǒng)實(shí)現(xiàn)人的眼球識(shí)別功能

上一篇博客《基于Dragonboard410c android系統(tǒng)實(shí)現(xiàn)USB camera圖像預(yù)覽》，我們實(shí)現(xiàn)了如何在410c android系統(tǒng)上進(jìn)行USB camera圖像的預(yù)覽功能，本文在此基礎(chǔ)上，我們借助openncv庫(kù)，實(shí)現(xiàn)人的眼球識(shí)別功能。

一準(zhǔn)備工具：

圖1.Dragonboard410c開發(fā)板（android系統(tǒng)）

圖2.顯示器

圖3.HDMI線

圖4.羅技C525（usb camera）

二移植opencv庫(kù)：

1.下載地址：http://opencv.org/downloads.html

2.移植步驟：大家可以參照 Android 使用OpenCV的方法案例，包括如何可以通過(guò)省略openncv_manger.apk的方式實(shí)現(xiàn)整體移植。

3.搭好環(huán)境后，最主要是加入我們上傳的例程：Eye_recognition.rar，并編譯運(yùn)行（官網(wǎng)的opencv可不提供這個(gè)功能，筆者可是無(wú)私奉獻(xiàn)給大家哈）。

三關(guān)鍵代碼：

#include

#define LOG_TAG "FaceDetection/DetectionBasedTracker"

#define LOGD(...) ((void)__android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__))

using namespace std;

using namespace cv;

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_DetectionBasedTracker_nativeCreateObject

(JNIEnv * jenv, jclass, jstring jFileName, jint faceSize)

{

const char* jnamestr = jenv->GetStringUTFChars(jFileName, NULL);

string stdFileName(jnamestr);

jlong result = 0;

		?

		try

		{

		DetectionBasedTracker::Parameters DetectorParams;

		if (faceSize > 0)

		DetectorParams.minObjectSize = faceSize;

		result = (jlong)new DetectionBasedTracker(stdFileName, DetectorParams);

		}

		catch(cv::Exception e)

		{

		LOGD("nativeCreateObject catched cv::Exception: %s", e.what());

		jclass je = jenv->FindClass("org/opencv/core/CvException");

		if(!je)

		je = jenv->FindClass("java/lang/Exception");

		jenv->ThrowNew(je, e.what());

		}

		catch (...)

		{

		LOGD("nativeCreateObject catched unknown exception");

		jclass je = jenv->FindClass("java/lang/Exception");

		jenv->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1VideoCapture__()}");

		return 0;

		}

		?

		return result;

		}

		?

			JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBasedTracker_nativeDestroyObject

			(JNIEnv * jenv, jclass, jlong thiz)

			{

			try

			{

			((DetectionBasedTracker*)thiz)->stop();

			delete (DetectionBasedTracker*)thiz;

			}

			catch(cv::Exception e)

			{

			LOGD("nativeestroyObject catched cv::Exception: %s", e.what());

			jclass je = jenv->FindClass("org/opencv/core/CvException");

			if(!je)

			je = jenv->FindClass("java/lang/Exception");

			jenv->ThrowNew(je, e.what());

			}

			catch (...)

			{

			LOGD("nativeDestroyObject catched unknown exception");

			jclass je = jenv->FindClass("java/lang/Exception");

			jenv->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1VideoCapture__()}");

			}

			}

			?

				JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBasedTracker_nativeStart

				(JNIEnv * jenv, jclass, jlong thiz)

				{

				try

				{

				((DetectionBasedTracker*)thiz)->run();

				}

				catch(cv::Exception e)

				{

				LOGD("nativeStart catched cv::Exception: %s", e.what());

				jclass je = jenv->FindClass("org/opencv/core/CvException");

				if(!je)

				je = jenv->FindClass("java/lang/Exception");

				jenv->ThrowNew(je, e.what());

				}

				catch (...)

				{

				LOGD("nativeStart catched unknown exception");

				jclass je = jenv->FindClass("java/lang/Exception");

				jenv->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1VideoCapture__()}");

				}

				}

				?

					JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBasedTracker_nativeStop

					(JNIEnv * jenv, jclass, jlong thiz)

					{

					try

					{

					((DetectionBasedTracker*)thiz)->stop();

					}

					catch(cv::Exception e)

					{

					LOGD("nativeStop catched cv::Exception: %s", e.what());

					jclass je = jenv->FindClass("org/opencv/core/CvException");

					if(!je)

					je = jenv->FindClass("java/lang/Exception");

					jenv->ThrowNew(je, e.what());

					}

					catch (...)

					{

					LOGD("nativeStop catched unknown exception");

					jclass je = jenv->FindClass("java/lang/Exception");

					jenv->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1VideoCapture__()}");

					}

					}

					?

						JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBasedTracker_nativeSetFaceSize

						(JNIEnv * jenv, jclass, jlong thiz, jint faceSize)

						{

						try

						{

						if (faceSize > 0)

						{

						DetectionBasedTracker::Parameters DetectorParams = 

						((DetectionBasedTracker*)thiz)->getParameters();

						DetectorParams.minObjectSize = faceSize;

						((DetectionBasedTracker*)thiz)->setParameters(DetectorParams);

						}

						?

						}

						catch(cv::Exception e)

						{

						LOGD("nativeStop catched cv::Exception: %s", e.what());

						jclass je = jenv->FindClass("org/opencv/core/CvException");

						if(!je)

						je = jenv->FindClass("java/lang/Exception");

						jenv->ThrowNew(je, e.what());

						}

						catch (...)

						{

						LOGD("nativeSetFaceSize catched unknown exception");

						jclass je = jenv->FindClass("java/lang/Exception");

						jenv->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1VideoCapture__()}");

						}

						}

						?

							JNIEXPORT void JNICALL Java_org_opencv_samples_fd_DetectionBasedTracker_nativeDetect

							(JNIEnv * jenv, jclass, jlong thiz, jlong imageGray, jlong faces)

							{

							try

							{

							vector<Rect> RectFaces;

							((DetectionBasedTracker*)thiz)->process(*((Mat*)imageGray));

							((DetectionBasedTracker*)thiz)->getObjects(RectFaces);

							vector_Rect_to_Mat(RectFaces, *((Mat*)faces));

							}

							catch(cv::Exception e)

							{

							LOGD("nativeCreateObject catched cv::Exception: %s", e.what());

							jclass je = jenv->FindClass("org/opencv/core/CvException");

							if(!je)

							je = jenv->FindClass("java/lang/Exception");

							jenv->ThrowNew(je, e.what());

							}

							catch (...)

							{

							LOGD("nativeDetect catched unknown exception");

							jclass je = jenv->FindClass("java/lang/Exception");

							jenv->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1VideoCapture__()}");

							}

							}

						?