C# 将多个图片合并成TIFF文件的两种方法（续集）
作者：互联网
01
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名词解释
首先要弄清楚几个名词：
① 图像的压缩品质：指的就是压缩后的图象清晰度，通俗地讲，就是用图像处理软件保存图像时，为了节省硬盘空间，一般是要对原始图像通过一定的算法进行压缩的，而压缩品质实质上就是压缩比率的大小，压缩的比率越高，生成的图像所占硬盘空间就越少，便是图片质量也就越差；相反，压缩比率越低，图像的品质越高，但是相应地占用硬盘空间也就越大。
② Tiff：标签图像文件格式（Tag Image File Format，TIFF）是一种灵活的位图格式，TIFF（Tag Image File Format）图像文件是图形图像处理中常用的格式之一，其图像格式很复杂，但由于它对图像信息的存放灵活多变，可以支持很多色彩系统，而且独立于操作系统，因此得到了广泛应用。TIFF文件以.tif为扩展名。
02
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新的探索
变化一：这位仁兄的处理方式是把每张图片先用CompressionImage这个方法加载到内存进行编码压缩的，实际上这一步是没有必要的，不仅仅浪费了时间还没有节省空间，因为调用的第三方本身就带了图片压缩的功能，所以这一段我的项目去掉了；
变化二：这位仁兄处理是把一组图片一次压缩成一张tiff，我这边的应用场景是图片一张一张来，所以就是每来一张就压缩一张；
变化三：除了图片合成，我的项目中添加了tiff文件拆分的方法；
变化四：记录图片加载、合成、保存的时间并写入log文件.
03
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源码分享
我这里测试采用的是控制台，运行后输入你也数值：要合并的图片的数量，就可以执行了，测试过程我只有一张图片，所以我将这张图片进行了克隆：
Program.cs：这里有三个方法，依次是Main、BmpToTiff和CopyImage，CopyImage负责图片克隆，BmpToTiff方法的for循环中可以选择图片合成的方案一或者二。
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TiffHelper;
namespace TiffConsole
{
class Program
{
private static Stopwatch stopwatch = new Stopwatch();
static void Main(string[] args)
{
string filePath = @"C:\Users\majm\Desktop\新建文件夹\";
CopyImage(filePath);
BmpToTiff(filePath);
//SplitTiffToBMP.SplitTiff(filePath);//图片分割
Console.ReadKey();
}
public static void BmpToTiff(string filePath)
{
List<TiffHelper.TimeSpan> timeSpans = new List<TiffHelper.TimeSpan>();
string[] imagePaths = System.IO.Directory.GetFiles(filePath, "*.bmp");
stopwatch.Start();
for (int i = 0; i < imagePaths.Length; i++)
{
//调用方案1
//var timeSpan = BitMiracle.Jpeg2Tiff(i, imagePaths.Length, filePath, $"{i}.tif", 100);
//调用方案2
var timeSpan = RasterEdge.TIFFDocument(i,filePath);
timeSpans.Add(timeSpan);
}
stopwatch.Stop();
FileWrite.WriteLogFile("Id,LoadTime,MergeTime,SaveTime,TotalTime,flag", true);
timeSpans.ForEach(n => FileWrite.WriteLogFile(n.ToString(), true));
FileWrite.WriteLogFile("合成图片总计耗时：" + stopwatch.ElapsedMilliseconds.ToString() + "毫秒", true);
Console.WriteLine("合成图片总计耗时：" + stopwatch.ElapsedMilliseconds.ToString() + "毫秒");
}
public static void CopyImage(string filePath)
{
Console.WriteLine("请输入合并图片的数量：");
//控制台输入图片数量
bool flag = false;
int count = 0;
while (!flag)
{
flag = int.TryParse(Console.ReadLine(), out count);
}
//复制图片
Bitmap bitmap = new Bitmap(filePath + "0.bmp");
for (int i = 1; i < count; i++)
{
bitmap.Save(filePath + $"{i}.bmp");
}
bitmap.Dispose();
}
}
}
合图和拆分的代码我写到了类库TiffHelper中：
BitMiracle.cs
using BitMiracle.LibTiff.Classic;
using System;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
namespace TiffHelper
{
public class BitMiracle
{
/// 合并jpg
/// </summary>
/// <param name="bmps">bitmap数组</param>
/// <param name="tiffSavePath">保存路径</param>
/// <param name="quality">图片质量，1-100</param>
/// <returns></returns>
public static bool Jpegs2Tiff(Bitmap[] bmps, string tiffSavePath, int quality = 15)
{
try
{
MemoryStream ms = new MemoryStream();
using (Tiff tif = Tiff.ClientOpen(@"in-memory", "w", ms, new TiffStream()))
{
foreach (var bmp in bmps)//
{
byte[] raster = GetImageRasterBytes(bmp, PixelFormat.Format24bppRgb);
tif.SetField(TiffTag.IMAGEWIDTH, bmp.Width);
tif.SetField(TiffTag.IMAGELENGTH, bmp.Height);
tif.SetField(TiffTag.COMPRESSION, Compression.JPEG);
tif.SetField(TiffTag.PHOTOMETRIC, Photometric.RGB);
tif.SetField(TiffTag.JPEGQUALITY, quality);
tif.SetField(TiffTag.ROWSPERSTRIP, bmp.Height);
tif.SetField(TiffTag.XRESOLUTION, 90);
tif.SetField(TiffTag.YRESOLUTION, 90);
tif.SetField(TiffTag.BITSPERSAMPLE, 8);
tif.SetField(TiffTag.SAMPLESPERPIXEL, 3);
tif.SetField(TiffTag.PLANARCONFIG, PlanarConfig.CONTIG);
int stride = raster.Length / bmp.Height;
ConvertSamples(raster, bmp.Width, bmp.Height);
for (int i = 0, offset = 0; i < bmp.Height; i++)
{
tif.WriteScanline(raster, offset, i, 0);
offset += stride;
}
tif.WriteDirectory();
}
System.IO.FileStream fs = new FileStream(tiffSavePath, FileMode.Create);
ms.Seek(0, SeekOrigin.Begin);
fs.Write(ms.ToArray(), 0, (int)ms.Length);
fs.Close();
return true;
}
}
catch (Exception ex)
{
return false;
}
}
private static MemoryStream ms1 = new MemoryStream();
private static Tiff tif = Tiff.ClientOpen(@"in-memory", "w", ms1, new TiffStream());
/// <summary>
/// tiff图片合成，一次合并一张
/// </summary>
/// <param name="index">图片id</param>
/// <param name="totalCount">图片数量</param>
/// <param name="tiffSavePath">tiff保存路径</param>
/// <param name="quality">压缩品质</param>
/// <returns></returns>
public static TimeSpan Jpeg2Tiff(int index, int totalCount, string tiffSavePath,string fileName, int quality = 75)
{
try
{
string fileFullPath = Path.Combine(tiffSavePath, fileName);
Stopwatch sTotal = new Stopwatch();
sTotal.Start();
TimeSpan timeSpan = new TimeSpan();
timeSpan.Id = index;
//Bitmap[] bmps = new Bitmap[1] {new Bitmap( @"C:\Users\zhuyr\Desktop\AutoFocus\" + $"{i}.bmp")};
Stopwatch sw = new Stopwatch();
sw.Start();
Bitmap bmp = new Bitmap(tiffSavePath + $"{index}.bmp");
sw.Stop();
timeSpan.LoadTime = sw.ElapsedMilliseconds.ToString();
sw = new Stopwatch();
sw.Start();
byte[] raster = GetImageRasterBytes(bmp, PixelFormat.Format24bppRgb);
tif.SetField(TiffTag.IMAGEWIDTH, bmp.Width);
tif.SetField(TiffTag.IMAGELENGTH, bmp.Height);
tif.SetField(TiffTag.COMPRESSION, Compression.NONE);
tif.SetField(TiffTag.PHOTOMETRIC, Photometric.RGB);
tif.SetField(TiffTag.JPEGQUALITY, quality);
tif.SetField(TiffTag.ROWSPERSTRIP, bmp.Height);
tif.SetField(TiffTag.XRESOLUTION, 90);
tif.SetField(TiffTag.YRESOLUTION, 90);
tif.SetField(TiffTag.BITSPERSAMPLE, 8);
tif.SetField(TiffTag.SAMPLESPERPIXEL, 3);
tif.SetField(TiffTag.PLANARCONFIG, PlanarConfig.CONTIG);
int stride = raster.Length / bmp.Height;
ConvertSamples(raster, bmp.Width, bmp.Height);
for (int i = 0, offset = 0; i < bmp.Height; i++)
{
tif.WriteScanline(raster, offset, i, 0);
offset += stride;
}
tif.WriteDirectory();
sw.Stop();
timeSpan.MergeTime = sw.ElapsedMilliseconds.ToString();
sw = new Stopwatch();
sw.Start();
if (totalCount == 1000)
{
if (index % 10 == 9)
{
System.IO.FileStream fs = new FileStream(fileFullPath, FileMode.Create);
ms1.Seek(0, SeekOrigin.Begin);
fs.Write(ms1.ToArray(), 0, (int)ms1.Length);
fs.Close();
sw.Stop();
}
}
else
{
System.IO.FileStream fs = new FileStream(fileFullPath, FileMode.Create);
ms1.Seek(0, SeekOrigin.Begin);
fs.Write(ms1.ToArray(), 0, (int)ms1.Length);
fs.Close();
sw.Stop();
}
timeSpan.SaveTime = sw.ElapsedMilliseconds.ToString();
sTotal.Stop();
timeSpan.TotalTime = sTotal.ElapsedMilliseconds.ToString();
timeSpan.flag = true;
return timeSpan;
}
catch (Exception ex)
{
return null;
}
}
private static byte[] GetImageRasterBytes(Bitmap bmp, PixelFormat format)
{
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
byte[] bits = null;
try
{
BitmapData bmpdata = bmp.LockBits(rect, ImageLockMode.ReadWrite, format);
bits = new byte[bmpdata.Stride * bmpdata.Height];
System.Runtime.InteropServices.Marshal.Copy(bmpdata.Scan0, bits, 0, bits.Length);
bmp.UnlockBits(bmpdata);
}
catch
{
return null;
}
return bits;
}
private static void ConvertSamples(byte[] data, int width, int height)
{
int stride = data.Length / height;
const int samplesPerPixel = 3;
for (int y = 0; y < height; y++)
{
int offset = stride * y;
int strideEnd = offset + width * samplesPerPixel;
for (int i = offset; i < strideEnd; i += samplesPerPixel)
{
byte temp = data[i + 2];
data[i + 2] = data[i];
data[i] = temp;
}
}
}
}
}
Jpeg2Tiff这个方法的参数quality可以调节压缩比率，这个值默认是75，范围是【0,100】，当然你也可以通过tif.SetField(TiffTag.COMPRESSION, Compression.NONE);设置压缩方式，会有以下这些可选项，每种方式都采用了不同算法，所以压缩效率都是不一样的.
RasterEdge.cs 方案2，每次把新来的图片插入上一次合成的tiff中
using RasterEdge.Imaging.Basic;
using RasterEdge.XDoc.TIFF;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace TiffHelper
{
public class RasterEdge
{
public static TimeSpan TIFFDocument(int index,string filePath)
{
Stopwatch sTotal = new Stopwatch();
sTotal.Start();
TimeSpan timeSpan = new TimeSpan();
timeSpan.Id = index;
Stopwatch sw = new Stopwatch();
sw.Start();
Bitmap[] bmps = new Bitmap[1] { new Bitmap(filePath + $"{index}.bmp") };
sw.Stop();
timeSpan.LoadTime = sw.ElapsedMilliseconds.ToString();
sw = new Stopwatch();
sw.Start();
//ImageOutputOption option = new ImageOutputOption() { Color = ColorType.Color, Compression = ImageCompress.CCITT };
ImageOutputOption option = new ImageOutputOption() { Type = ImageType.JPEG, Color = ColorType.Color, Compression = ImageCompress.Uncompressed };
TIFFDocument tifDoc_new = new TIFFDocument(bmps, option);
TIFFDocument tifDoc_old;
if (index > 0)
{
tifDoc_old = new TIFFDocument(filePath + $"{index - 1}.tif");
BasePage page = tifDoc_new.GetPage(0);
tifDoc_old.InsertPage(page, index);
}
else
{
tifDoc_old = tifDoc_new;
}
if (tifDoc_old == null)
throw new Exception("Fail to construct TIFF Document");
sw.Stop();
timeSpan.MergeTime = sw.ElapsedMilliseconds.ToString();
sw = new Stopwatch();
sw.Start();
tifDoc_old.Save(filePath + $"{index}.tif");
sw.Stop();
timeSpan.SaveTime = sw.ElapsedMilliseconds.ToString();
sTotal.Stop();
timeSpan.TotalTime = sTotal.ElapsedMilliseconds.ToString();
timeSpan.flag = true;
return timeSpan;
}
}
}
SplitTiffToBMP.cs：图片拆分
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace TiffHelper
{
public class SplitTiffToBMP
{
private static Stopwatch stopwatch = new Stopwatch();
public static void SplitTiff(string filePath)
{
stopwatch.Start();
List<TimeSpan> timeSpans = new List<TimeSpan>();
//分割Tif图片为多个Gif图片
System.Drawing.Image img = System.Drawing.Image.FromFile(filePath+"9.tif");
Guid guid = (Guid)img.FrameDimensionsList.GetValue(0);
FrameDimension dimension = new FrameDimension(guid);
int totalPage = img.GetFrameCount(dimension);
for (int i = 0; i < totalPage; i++)
{
TimeSpan timeSpan = new TimeSpan();
Stopwatch sw = new Stopwatch();
sw.Start();
img.SelectActiveFrame(dimension, i);
img.Save(filePath + i + ".bmp", System.Drawing.Imaging.ImageFormat.Bmp);
sw.Stop();
timeSpan.Id = i;
timeSpan.TotalTime = sw.ElapsedMilliseconds.ToString();
timeSpans.Add(timeSpan);
}
stopwatch.Stop();
FileWrite.WriteLogFile("Id,,,,TotalTime", true);
timeSpans.ForEach(n => FileWrite.WriteLogFile(n.ToString(), true));
FileWrite.WriteLogFile("拆分图片总计耗时：" + stopwatch.ElapsedMilliseconds.ToString() + "毫秒", true);
Console.WriteLine("拆分图片总计耗时：" + stopwatch.ElapsedMilliseconds.ToString() + "毫秒");
}
}
}
数据模型：
FileWrite.cs 记录耗时，写入
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace TiffHelper
{
public class FileWrite
{
/// <summary>
/// log文件打印
/// </summary>
/// <param name="logFullPath">文件全路径</param>
/// <param name="content">写入内容</param>
/// <param name="flag">true：追加，false：覆盖</param>
public static void WriteLogFile(string content, bool flag,string logFullPath = @"C:\Users\majm\Desktop\新建文件夹\log.txt")
{
StreamWriter sw = new StreamWriter(logFullPath ,flag);
sw.WriteLine(content);
sw.Close();
}
}
}
TimeSpan.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace TiffHelper
{
public class TimeSpan
{
public int Id;
public string LoadTime;
public string MergeTime;
public string SaveTime;
public string TotalTime;
public bool flag;
public override string ToString()
{
StringBuilder report = new StringBuilder();
report.Append($"{Id},{LoadTime},{MergeTime},{SaveTime},{TotalTime},{flag}");
return report.ToString();
}
}
}
04
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运行演示
05
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项目源码
链接：https://pan.baidu.com/s/1xw6iJkPg_5-P63QpLlX0kA
提取码：点击在看后添加小编微信zls20210502获取
标签：续集,C#,TIFF,sw,System,bmp,new,using,tif 来源： https://www.cnblogs.com/zls366/p/15521240.html