医疗图像处理：pdf转换dcm
发布时间
阅读量：
阅读量
医疗行业的程序猿们每天都在与DICOM协议打交道,经常遇到需要处理PDF转 DICOM 的问题,最近有一篇关于如何使用C#语言实现PDF转 DICOM 转换过程的文章引起了博主的兴趣,于是深入研究后发现目前还没有一篇详尽介绍这一流程的文章,于是转向寻找现成的解决方案,最终发现社区中存在各种各样的 DICOM 转换工具包,但大多数都是基于C++开发的开源项目,对于希望将知识应用于实际工作的C#开发者来说仍显力不从心,经过一段时间的努力探索后发现现有的开源项目多为工程库形式存在,无法满足实际应用需求于是决定亲自编写一套基于C#语言的 DICOM 转换工具包,在尝试了多个开源框架后发现现有方案均存在不足最终决定完全自主研发一套符合自身需求的解决方案
第一步，在项目中导入必要的动态链接库 <>。
using Dicom;
using Dicom.Imaging;
using Dicom.IO.Buffer;
using O2S.Components.PDFRender4NET;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;头文件如果有缺失的话，会报错的（再次狗头）
以下为硬干货，请吞食，嘿嘿嘿
转换图片格式的函数
private enum Definition
{
One = 1, Two = 2, Three = 3, Four = 4, Five = 5, Six = 6, Seven = 7, Eight = 8, Nine = 9, Ten = 10
}
/// <summary>
/// 将PDF文档转换为图片的方法
/// </summary>
/// <param name="pdfInputPath">PDF文件路径</param>
/// <param name="imageOutputPath">图片输出路径</param>
/// <param name="imageName">生成图片的名字</param>
/// <param name="startPageNum">从PDF文档的第几页开始转换</param>
/// <param name="endPageNum">从PDF文档的第几页开始停止转换</param>
/// <param name="imageFormat">设置所需图片格式</param>
/// <param name="definition">设置图片的清晰度，数字越大越清晰</param>
private static void ConvertPDF2Image(string pdfInputPath, string imageOutputPath,
string imageName, int startPageNum, int endPageNum, ImageFormat imageFormat, Definition definition)
{
PDFFile pdfFile = PDFFile.Open(pdfInputPath);
if (!Directory.Exists(imageOutputPath))
{
Directory.CreateDirectory(imageOutputPath);
}
// validate pageNum
if (startPageNum <= 0)
{
startPageNum = 1;
}
if (endPageNum > pdfFile.PageCount)
{
endPageNum = pdfFile.PageCount;
}
if (startPageNum > endPageNum)
{
int tempPageNum = startPageNum;
startPageNum = endPageNum;
endPageNum = startPageNum;
}
// start to convert each page
for (int i = startPageNum; i <= endPageNum; i++)
{
Bitmap pageImage = pdfFile.GetPageImage(i - 1, 100 * (int)definition);
pageImage.Save(imageOutputPath + "\ " + imageName + "." + imageFormat.ToString(), imageFormat);
pageImage.Dispose();
}
pdfFile.Dispose();
}本菜菜没有找到直接转换的方式，是按照pdf-bmp-dcm的路数。
public static byte[] GetPixels(Bitmap bitmap)
{
byte[] bytes = new byte[bitmap.Width * bitmap.Height * 3];
int wide = bitmap.Width;
int i = 0;
int height = bitmap.Height;
for (int y = 0; y < height; y++)//20210312
{
for (int x = 0; x < wide; x++)//20210312
{
var srcColor = bitmap.GetPixel(x, y);
bytes[i] = srcColor.R;
i++;
bytes[i] = srcColor.G;
i++;
bytes[i] = srcColor.B;
i++;
}
}
byte[] bytess = new byte[bitmap.Width * bitmap.Height * 3];
for (int j = 0; j < bytess.Length; j++)
{
bytess[j] = bytes[j];
}
return bytess;
}main函数：
string pdfpath = @"C:\Users\Administrator\Desktop\test11\1.pdf";
string imagefolderpath = @"C:\Users\Administrator\Desktop\test11";
ConvertPDF2Image(pdfpath, imagefolderpath, "test", 1, 1, ImageFormat.Bmp, Definition.One);
string file = imagefolderpath + "\ test.bmp";
string SeriesUid = "1111";
Bitmap bitmap = new Bitmap(file);
byte[] pixels = GetPixels(bitmap);
MemoryByteBuffer buffer = new MemoryByteBuffer(pixels);
DicomDataset dataset = new DicomDataset();
dataset.Add(DicomTag.PhotometricInterpretation, PhotometricInterpretation.Rgb.Value);// PhotometricInterpretation.Rgb.Value
// dataset.Add(DicomTag.Rows, (ushort)(bitmap.Height / 5));
dataset.Add(DicomTag.Rows, (ushort)(bitmap.Height));
dataset.Add(DicomTag.Columns, (ushort)bitmap.Width);
dataset.Add(DicomTag.BitsAllocated, (ushort)8);
dataset.Add(DicomTag.SOPClassUID, "1.2.840.10008.5.1.4.1.1.2");
dataset.Add(DicomTag.SOPInstanceUID, "1.2.840.10008.5.1.4.1.1.2.20181120090837121314");
// dataset.Add(DicomTag.PatientAge, 10);
dataset.Add(DicomTag.StudyInstanceUID, "111");
dataset.Add(DicomTag.StudyDate, DateTime.Now.ToString("yyyyMMdd"));
dataset.Add(DicomTag.PatientName, "MPR");
dataset.Add(DicomTag.PatientID, "1010");
dataset.Add(DicomTag.PatientPosition, "HFS");
//dataset.Add(DicomTag.PixelDataAreaOriginRelativeToFOV, DataCommon.PatientInfo.PatientPosition);
//dataset.Add(DicomTag.PhotometricInterpretation, "MONOCHROME2");
dataset.Add(DicomTag.SamplesPerPixel, "3");
dataset.Add(DicomTag.WindowCenter, "128");
dataset.Add(DicomTag.WindowWidth, "256");
dataset.Add(DicomTag.RescaleIntercept, "0");
dataset.Add(DicomTag.RescaleSlope, "1");
dataset.Add(DicomTag.RescaleType, "US");
dataset.Add(DicomTag.PixelSpacing, "1.0\ 1.0");
dataset.Add(DicomTag.SeriesInstanceUID, SeriesUid);
dataset.Add(DicomTag.ProtocolName, "MPR");
dataset.Add(DicomTag.SeriesNumber, "5102");
dataset.Add(DicomTag.SeriesDescription, "0*0");
DicomPixelData pixelData = DicomPixelData.Create(dataset, true);
pixelData.BitsStored = 8;
//pixelData.BitsAllocated = 8;
pixelData.SamplesPerPixel = 3;
pixelData.HighBit = 7;
pixelData.PixelRepresentation = 0;
pixelData.PlanarConfiguration = 0;
pixelData.AddFrame(buffer);
string dcmFileName;
DicomFile dicomfile = new DicomFile(dataset);
bitmap.Dispose();
dicomfile.Save(file.Replace(".bmp", ".dcm"));
dcmFileName = file.Replace(".bmp", ".dcm");以上。
全部评论 (0)
还没有任何评论哟~