C＃图像处理像素位置 [英] C# image processing pixel location

问题描述

我想加载图片，然后想要调整大小，然后保存新调整大小的图像。

如下所示

i want to load an image and then want to resize it and then save the new resized image.
like the following

g.DrawImage(img, new Rectangle(0, 0,
                      (int)(rect.Width - 200 * dCurZoom), (int)(rect.Height - 200 * dCurZoom))) ;

但问题是调整大小的图像是在原始图像上绘制的，我无法保存新调整大小的图像seperatel。请帮帮我!!!

but problem is this that the resized image is drawn on original one and i am not able to save the new resized image seperatel. please help me!!!

推荐答案

if (img.Width != width || img.Height != height)
                {
                    Bitmap newImage = new Bitmap(width, height);
                    using (Graphics gr = Graphics.FromImage(newImage))
                    {
                        gr.SmoothingMode = SmoothingMode.HighQuality;
                        gr.InterpolationMode = InterpolationMode.HighQualityBicubic;
                        gr.PixelOffsetMode = PixelOffsetMode.HighQuality;
                        gr.DrawImage(img, new Rectangle(0, 0, width, height));
                    }

                    img.Dispose();
                    img = newImage;
                }

这篇关于C＃图像处理像素位置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！