visionpro画多个掩膜，滚轮缩放很卡怎么办

wafer

如果您在VisionPro画掩膜滚轮缩放时，发现卡顿，建议您：  1. 尽量减少要缩放的像素点数，因为缩放受限于你电脑的硬件性能；  2. 您也可以在设置中将平滑过滤模式设置为“线型”来提高速度；  3. 您可以更新您的电脑硬件，比如更高配置的CPU，更大的显存以及高速的显卡，以提升图像处理的效率；  4. 您可以尝试使用双核CPU，它可以提高缩放效率。

wafer

I try to use CogMaskGraphic to draw one plane with green color, but run very slow when zoom the picture with lots of CogMaskGraphic, how to solve the problem?

wafer

When working with large images, it's not uncommon to experience performance issues when drawing many graphics, especially when zooming in and out. Here are a few tips to optimize the performance:

    Reduce the number of graphics: Try to reduce the number of graphics you are using. Consider combining multiple graphics into a single graphic if possible.

    Use efficient graphic types: Different graphic types have different performance characteristics. Use the most efficient type for your needs. For example, using a CogRectangle or CogPolygon instead of a CogMaskGraphic can result in improved performance.

    Use caching: The CogMaskGraphic class supports caching, which can significantly improve performance. By enabling caching, the graphic is only recalculated when the image changes, rather than every time the image is drawn. To enable caching, set the CogMaskGraphic.EnableCaching property to true.

    Use a lower-resolution image: If you are zoomed in on a high-resolution image, the graphics may take longer to render. Consider using a lower-resolution image when you are zoomed in, and switching back to a higher-resolution image when zoomed out.

    Use hardware acceleration: The Cognex VisionPro library supports hardware acceleration on supported graphics hardware. This can significantly improve performance, especially when dealing with large images. To enable hardware acceleration, set the CogDisplay.UseAcceleration property to true.

    Optimize your graphics algorithms: The performance of your graphics also depends on the algorithms you use to generate them. Consider optimizing your algorithms to improve performance.

Try these tips one by one, and see if they can help you improve the performance of your CogMaskGraphic-based application.

wafer

    private static void AddMask(UCMapDieSelect ImgControl, Die item, CogImage8Grey maskImg, CogRectangle rect)
        {
            JZDieMaskGraphic zMaskGraphic = new JZDieMaskGraphic { SourceImage = maskImg, Interactive = false };
            //zMaskGraphic.SelectedSpaceName = "$";
            zMaskGraphic.Region = rect;
            //zMaskGraphic.IsMask = item.IsGoodDie;
            if (item.IsGoodDie)
            {
                zMaskGraphic.Color = CogColorConstants.White;
                zMaskGraphic.SetColorMap(0, CogColorConstants.Green);
            }
            else
            {
                zMaskGraphic.Color = CogColorConstants.DarkGrey;
                zMaskGraphic.SetColorMap(0, CogColorConstants.Black);
            }
            zMaskGraphic.ContentDie = item;

            // Add the mask graphic object to the list of mask graphics
            lock (ImgControl.cogComposite)
            {
                ImgControl.cogComposite.Shapes.Add(zMaskGraphic);
            }
        }

wafer

     // Create a new thread for each add mask task
            var tasks = new List<Task>();
            foreach (Die item in Parame.DieMes)
            {
                CogRectangle rect = new CogRectangle { Width = dieWidth, Height = dieHeight };
                rect.X = left + (item.BinXIndex - 1) * dieWidth;
                rect.Y = top + (item.BinYIndex - 1) * dieHeight;
                var task = Task.Run(() => AddMask(ImgControl, item, maskImg, rect));
                tasks.Add(task);
            }
            // Wait for all tasks to complete
            Task.WaitAll(tasks.ToArray());