我试图在列表视图或图像列表中生成所选视频的所有帧,是否可以不首先将这些帧保存为图像?
这是我的代码样本。
string name = @"E:\Videos\Anime\eyeshield\Eyeshield 21 Episode 1.flv";
VideoCapture _capture;
_capture = new VideoCapture(name);
List<Image<Bgr, Byte>> image_array = new List<Image<Bgr, Byte>>();
double totalFrames =_capture.GetCaptureProperty(Emgu.CV.CvEnum.CapProp.FrameCount);
double fps = _capture.GetCaptureProperty(Emgu.CV.CvEnum.CapProp.Fps);
double frameNumber = 0.0;
bool Reading = true;
while (Reading)
{
_capture.SetCaptureProperty(Emgu.CV.CvEnum.CapProp.PosFrames, frameNumber);
Image<Bgr, Byte> frame = _capture.QueryFrame().ToImage<Bgr, Byte>();
if (frame != null)
{
//Display the image_array frame in listView1 or imageList1 one by one
}
else
{
Reading = false;
}
frameNumber++;
}
Here可能类似于我的目标输出,但语法QueryFrame().Copy
不起作用。
发布于 2018-11-07 09:18:45
由于还没有人回答这个问题,我已经解决了这个问题,我会把代码发出来供将来参考。该帧将作为位图存储到图像列表中,并显示为列表视图。
double TotalFrame;
int FrameNo = 1;
bool IsReadingFrame;
VideoCapture capture;
System.Windows.Forms.ImageList myImageList = new ImageList();
public Form1()
{
InitializeComponent();
listViewFile.LargeImageList = myImageListLarge;
if (capture==null)
{
return;
}
IsReadingFrame = true;
ReadAllFrames();
}
private async void ReadAllFrames()
{
Mat m = new Mat();
while (IsReadingFrame == true && FrameNo <= TotalFrame)
{
listViewFile.Items.Add(new ListViewItem { ImageIndex = FrameNo, Text =
FrameNo.ToString() });
capture.SetCaptureProperty(Emgu.CV.CvEnum.CapProp.PosFrames, FrameNo);
capture.Read(m);
pictureBox1.Image = m.Bitmap;
myImageList.ImageSize = new Size(80, 80);
myImageList.Images.Add(m.Bitmap);
listViewFile.LargeImageList = myImageList;
}
}
https://stackoverflow.com/questions/53128290
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