Question

我编写了一些需要处理大约3000张图像的c＃代码，但是在第500张图像中，任务管理器正在使用1.5gb的内存显示该程序。以下功能似乎是主要的罪魁祸首之一。我能在这里做得更好吗？任何帮助或建议表示赞赏。感谢。

   private void FixImage(ref Bitmap field)
    {
        //rotate 45 degrees
        RotateBilinear rot = new RotateBilinear(45);
        field = rot.Apply(field);               //Memory spikes 2mb here
        //crop out unwanted image space
        Crop crop = new Crop(new Rectangle(cropStartX, cropStartY, finalWidth, finalHeight));
        field = crop.Apply(field);              //Memory spikes 2mb here
        //correct background
        for (int i = 0; i < field.Width; i++)
        {
            for (int j = 0; j < field.Height; j++)
            {
                if (field.GetPixel(i, j).ToArgb() == Color.Black.ToArgb())
                    field.SetPixel(i, j, Color.White);
            }
        }                                  //Memory usuage increases 0.5mb by the end
    }

Answer 1

我可以像这样更改代码时减少内存

private void FixImage(ref Bitmap field)
{
    //rotate 45 degrees
    RotateBilinear rot = new RotateBilinear(45);
    var rotField = rot.Apply(field);               //Memory spikes 2mb here
    field.Dispose();
    //crop out unwanted image space
    Crop crop = new Crop(new Rectangle(cropStartX, cropStartY, finalWidth, finalHeight));
    var cropField = crop.Apply(rotField);              //Memory spikes 2mb here
    rotField.Dispose();
    //correct background
    for (int i = 0; i < cropField.Width; i++)
    {
        for (int j = 0; j < cropField.Height; j++)
        {
            if (cropField.GetPixel(i, j).ToArgb() == Color.Black.ToArgb())
                cropField.SetPixel(i, j, Color.White);
        }
    }                                  //Memory usuage increases 0.5mb by the end
    field = cropField;
}

因此，立即释放图像内存似乎是一个好主意，而不是等到GC最终处理它。

Aforge内存使用

1 个答案: