tif 等任意多帧图片转换bmp 或者gif等格式

本文链接：https://blog.youkuaiyun.com/wangchungxb/article/details/2590798

这个博客介绍了一个Windows Forms应用程序，用于将多帧的tif图像转换为jpg格式。程序通过遍历tif文件中的每一帧，使用Graphics类进行处理并保存为独立的jpg图片。转换过程包括设置高质量的图像处理选项，并且可以处理多帧图像。

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Xml;

namespace WindowsFormsApplication1

{

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            if (DialogResult.OK == openFileDialog1.ShowDialog())
            {
                TifToJpg(openFileDialog1.FileName);
                statusStrip1.Items[0].Text = "-----图片转换完毕-----";
            }
            progressBar1.Value = 100;
            label1.Text = "完成   100%";
        }

private void TifToJpg(string strTifPath)
{

            #region 图像处理原始版本 --注释
            //System.Drawing.Image = System.Drawing.Image.FromFile(strTifPath);
            //uploadTif       中tif图形文件
            ////取得图片大小
            //System.Drawing.Size size = new System.Drawing.Size(image.Width, image.Height);
            ////新建一个bmp图片
            //System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(size.Width, size.Height);
            ////新建一个画板
            //System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
            ////设置高质量插值法
            //g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
            ////设置高质量,低速度呈现平滑程度
            //g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            ////清空一下画布
            //g.Clear(System.Drawing.Color.White);
            ////在指定位置画图
            //g.DrawImage(image, new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height), new System.Drawing.Rectangle(0, 0, image.Width, image.Height), System.Drawing.GraphicsUnit.Pixel);
            //保存高清晰度的缩略图
            //bitmap.Save(strNewFilePath,System.Drawing.Imaging.ImageFormat.Tiff);
            //uploadTif           中tif文件
            //System.IO.MemoryStream ms = new System.IO.MemoryStream();
            //bitmap.Save(strTifPath.Substring(0, strTifPath.LastIndexOf('.') + 1) + "jpg ", System.Drawing.Imaging.ImageFormat.Jpeg);
            //image.FrameDimensionsList[0]
            #endregion

            progressBar1.Value = 10;
            label1.Text = "完成   10%";
            //uploadTif       中tif图形文件
            System.Drawing.Bitmap image = (Bitmap)System.Drawing.Image.FromFile(strTifPath);
            //获取tif图片的第一维
            System.Drawing.Imaging.FrameDimension objDimension = new System.Drawing.Imaging.FrameDimension(image.FrameDimensionsList[0]);
            //遍历第一维所有帧数
            int pageNumber = image.GetFrameCount(objDimension);
            for (int i = 0; i < pageNumber; i++)
            {
                //选定第i帧
                image.SelectActiveFrame(objDimension, i);
                //取得图片大小
                System.Drawing.Size size = new System.Drawing.Size(image.Width, image.Height);
                //新建一个bmp图片
                System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(size.Width, size.Height);
                //新建一个画板
                System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
                //设置高质量插值法
                g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                //设置高质量,低速度呈现平滑程度
                g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                //清空一下画布
                g.Clear(System.Drawing.Color.White);
                //在指定位置画图
                g.DrawImage((Image)image, new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height), new System.Drawing.Rectangle(0, 0, image.Width, image.Height), System.Drawing.GraphicsUnit.Pixel);
                //翻转图片
                //bitmap.RotateFlip(RotateFlipType.Rotate270FlipXY);
                //调整亮度
                //将每帧保存到imag图片里面
                bitmap.Save(strTifPath.Substring(0, strTifPath.LastIndexOf('.')) + "temp" + i.ToString() + ".jpg ", System.Drawing.Imaging.ImageFormat.Jpeg);
                //释放临时图片资源
                g.Dispose();
                bitmap.Dispose();
            }
            progressBar1.Value = 50;
            label1.Text = "完成   50%";
            //释放tif图片资源
            image.Dispose();
        }

        private void progressBar1_Click(object sender, EventArgs e)        {        }     }}