c#-将相机图像渲染到WPF图像控件

我有一个uEye相机,我以1000ms的间隔拍摄图像的快照,我想像这样在WPF Image控件中进行渲染

 Bitmap MyBitmap;

// get geometry of uEye image buffer

int width = 0, height = 0, bitspp = 0, pitch = 0, bytespp = 0;

long imagesize = 0;

m_uEye.InquireImageMem(m_pCurMem, GetImageID(m_pCurMem), ref width, ref height, ref bitspp, ref pitch);

bytespp = (bitspp + 1) / 8;

imagesize = width * height * bytespp; // image size in bytes

// bulit a system bitmap
MyBitmap = new Bitmap(width, height, PixelFormat.Format24bppRgb);

// fill the system bitmap with the image data from the uEye SDK buffer
BitmapData bd = MyBitmap.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
m_uEye.CopyImageMem(m_pCurMem, GetImageID(m_pCurMem), bd.Scan0);
MyBitmap.UnlockBits(bd);

我试图以1秒的速率将这些位图放入Image控件中.我怎样才能让Bitmap出现在Image控件中,并在我完成处理后立即处置它们,以使最小的内存占用量成为一个好的小程序员：)？

解决方法:

这是我们的操作方式(对我来说,它无需加载CPU(约5％)即可以200fps的速度工作)：

    private WriteableBitmap PrepareForRendering(VideoBuffer videoBuffer) {
        PixelFormat pixelFormat;
        if (videoBuffer.pixelFormat == PixFrmt.rgb24) {
            pixelFormat = PixelFormats.Rgb24;
        } else if (videoBuffer.pixelFormat == PixFrmt.bgra32) {
            pixelFormat = PixelFormats.Bgra32;
        } else if (videoBuffer.pixelFormat == PixFrmt.bgr24) {
            pixelFormat = PixelFormats.Bgr24;
        } else {
            throw new Exception("unsupported pixel format");
        }
        var bitmap = new WriteableBitmap(
            videoBuffer.width, videoBuffer.height,
            96, 96,
            pixelFormat, null
        );
        _imgVIew.Source = bitmap;
        return bitmap;
    }

    private void DrawFrame(WriteableBitmap bitmap, VideoBuffer videoBuffer, double averangeFps) {
        VerifyAccess();
        if (isPaused) {
            return;
        }

        bitmap.Lock();
        try {
            using (var ptr = videoBuffer.Lock()) {
                bitmap.WritePixels(
                    new Int32Rect(0, 0, videoBuffer.width, videoBuffer.height),
                    ptr.value, videoBuffer.size, videoBuffer.stride,
                    0, 0
                );
            }
        } finally {
            bitmap.Unlock();
        }
        fpsCaption.Text = averangeFps.ToString("F1");
    }

标签：camera,gdi-2,wpf,c
来源： https://codeday.me/bug/20191102/1989593.html