JNIEXPORT jintArray JNICALL Java_pris_videotest_JNIClient_detectWithReturn(
JNIEnv * env, jclass, jintArray pixels, jint width, jint height) {
jint * cPixels;
cPixels = env->GetIntArrayElements(pixels, 0);
cv::Mat imgData(height, width, CV_8UC4, (unsigned char*) cPixels);
IplImage *frame = cvCreateImage(cvSize(width, height), IPL_DEPTH_8U, 4);
*frame = imgData.operator _IplImage();
//imgData.release();
cvSmooth(frame, frame, CV_GAUSSIAN, 3, 0, 0); ///<高斯滤波
cv::Mat m_OriFrameMat = frame;
//cvReleaseImage(&frame);
resize(m_OriFrameMat, m_ResizeFrameMat,
cv::Size(m_nVideoResizeW, m_nVideoResizeH), 0, 0, CV_INTER_LINEAR); ///<压缩 640*480 m_pResizeFrame=30*40
//m_OriFrameMat.release();
//cvtColor(m_ResizeFrameMat, m_GrayFrameMat, CV_BGRA2GRAY, 1); ///<灰度化
//m_ResizeFrameMat.release();
m_pBGSubMOG2.operator()(m_ResizeFrameMat, foregroundMat, 0.001);
m_ResizeFrameMat = foregroundMat;
int result[m_nVideoResizeH*m_nVideoResizeW];
for(int i = 0; i<m_nVideoResizeH*m_nVideoResizeW; i++){
result[i] = m_ResizeFrameMat.data[i];
}
env->ReleaseIntArrayElements(pixels, cPixels, 0);
jintArray intArray = env->NewIntArray(m_nVideoResizeH*m_nVideoResizeW);
env->SetIntArrayRegion(intArray, 0, m_nVideoResizeH*m_nVideoResizeW, result);
return intArray;
}
void GUI::set_img(const cv::Mat &frame, cv::Mat &result, Controller &controller) {
/** result == controller.current_image_to_display. */
// Convert controller.current_image_to_process (as src) to RGB(A) controller.current_image_to_display (as dst).
convert_image_to_gui_output_format(frame, result) ;
if (widget_current_image_to_display != NULL) {
delete widget_current_image_to_display ;
}
widget_current_image_to_display = Gtk::manage(new Gtk::Image());
widget_current_image_to_display->clear() ;
if (result.depth() != CV_8U) { // This desnt' should be !
result.assignTo(result, CV_8U) ;
}
// We resize the original image every time we display it.
// It's better like this because the image is resized (if needed) only one time per changement
// Not always resizing the same image.
//controller.resize_image_to_display(result) ;
if (controller.get_image_size_gt_layout()) {
cv::resize(result, result, cv::Size(controller.display_image_size.first, controller.display_image_size.second), 1.0, 1.0, cv::INTER_LINEAR) ;
}
IplImage iplimg = _IplImage(result) ;
widget_current_image_to_display->set(Gdk::Pixbuf::create_from_data( (const guint8 *) iplimg.imageData,
Gdk::COLORSPACE_RGB,
(result.channels() == 4),
iplimg.depth,
iplimg.width,
iplimg.height,
iplimg.widthStep)) ;
widget_current_image_to_display->show() ;
display_area.put(*widget_current_image_to_display, controller.current_image_position.first, controller.current_image_position.second) ;
}
JNIEXPORT jboolean JNICALL Java_pris_videotest_JNIClient_detect(JNIEnv * env,
jclass, jbyteArray pixels, jint width, jint height) {
jbyte * cPixels;
cPixels = env->GetByteArrayElements(pixels, 0);
cv::Mat imgData(height, width, CV_8UC1, (unsigned char*) cPixels);
IplImage *frame = cvCreateImage(cvSize(width, height), IPL_DEPTH_8U, 1);
*frame = imgData.operator _IplImage();
//imgData.release();
cvSmooth(frame, frame, CV_GAUSSIAN, 3, 0, 0); ///<高斯滤波
cv::Mat m_OriFrameMat = frame;
//cvReleaseImage(&frame);
resize(m_OriFrameMat, m_ResizeFrameMat,
cv::Size(m_nVideoResizeW, m_nVideoResizeH), 0, 0, CV_INTER_LINEAR); ///<压缩 640*480 m_pResizeFrame=30*40
//m_OriFrameMat.release();
//cvtColor(m_ResizeFrameMat, m_GrayFrameMat, CV_BGRA2GRAY, 1); ///<灰度化
//m_ResizeFrameMat.release();
m_pBGSubMOG2.operator()(m_ResizeFrameMat, foregroundMat, 0.001);
m_ResizeFrameMat = foregroundMat;
int i, j, k;
k = 0;
for (i = 0; i < m_nVideoResizeH; i++) {
for (j = 0; j < m_nVideoResizeW; j++) {
if (m_ResizeFrameMat.data[i * m_nVideoResizeW + j] != 0) {
k++; ///<计算二值前景图像非0像素点个数
}
}
}
//m_GrayFrameMat.release();
//delete frame;
double k_ratio = (double) k / (double) (m_nVideoResizeW * m_nVideoResizeH);
if (k_ratio <= 0.01) {
env->ReleaseByteArrayElements(pixels, cPixels, 0);
return false;
}
if (k_ratio / m_rFGSegThreshold > 1.5 || k_ratio / m_rFGSegThreshold < 0.79)
m_rFGSegThreshold = k_ratio;
///检测到运动视频段
if (k_ratio >= m_rFGSegThreshold) {
env->ReleaseByteArrayElements(pixels, cPixels, 0);
return true;
}
env->ReleaseByteArrayElements(pixels, cPixels, 0);
return false;
}
