image-processing - 删除多页 tif 中的分页符以形成一页长页面

Question

我有一些包含多个页面的 tif 文件，我想将其转换为单个长页面。即，包含两页(每页尺寸为 8.5x11)的文件将转换为大小为 8.5x22 的结果文件。有没有办法去掉分页符？

我不是询问如何将多个文件转换为单个文件。

Answer 1

我已经解决了这个问题。以下代码的大部分来自 Scott Hanselman上this page .

此 C# 函数采用源图像的文件名及其 tiff 输出的保存位置:

public static void RemovePageBreaks(string fileInput, string fileOutput)
        {
            using (Image image = Image.FromFile(fileInput))
            using (MemoryStream m = new MemoryStream())
            {
                int width = image.Width;
                int height = 0;
                int pageCount = image.GetFrameCount(FrameDimension.Page);
                height = image.Height * pageCount;
                int pasteFrom = 0;
                using (Bitmap compositeImage = new Bitmap(width, height))
                using (Graphics compositeGraphics = Graphics.FromImage(compositeImage))
                {
                    compositeGraphics.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceCopy;
                    for (int page = 0; page < pageCount; page++)
                    {

                        image.SelectActiveFrame(FrameDimension.Page, page);
                        image.Save(m, image.RawFormat);
                        Rectangle rect = new Rectangle(0, pasteFrom, image.Width, image.Height);
                        compositeGraphics.DrawImageUnscaledAndClipped(image, rect);
                        pasteFrom += image.Height;
                    }
                    compositeImage.Save(fileOutput, System.Drawing.Imaging.ImageFormat.Tiff);
                }

            }
        }