Question

我需要帮助从C＃中的Riped Binary文件创建图像预览。

文件在前48个字节中包含以下信息。

n签名; // 0x1234（4字节数据）

nXDPI; //图像XDPI（4字节数据）

nYDPI; //图像YDPI（4字节数据）

nBytesPerLine; // 1行数据长度/字节（4字节数据）

nHeight参数; //图像高度（4字节数据）

nWidth; //图像宽度（4字节数据）

nPaperWidth; //没用25：CaoXueShi（4字节数据）

NCOLORS; // 1 =单色4：CMYK（4字节数据）

NBITS; //不使用大多数打印机// Techwin：PassNum（4字节数据   ）

nReserved [3]; // 0：传递数字，1：vsdMode // DWORD VsdMode;（DATA in   12字节）

在48字节信息之后存储颜色信息。

第一行

KKKKKKKKKKKKKKKKKKKK

CCCCCCCCCCCCCCCCCCCC

MMMMMMMMMMMM

YYYYYYYYYYYYYYYYYYYYYY

第二行

KKKKKKKKKKKKKKKKKKKK

CCCCCCCCCCCCCCCCCCCC

MMMMMMMMMMMM

YYYYYYYYYYYYYYYYYYYYYYY ....

nBytesPerLine 定义每行中的字节数，即k，c，m和y的字节数。

和 nHeight 定义颜色信息行的数量。

现在使用上述信息我想在C＃中创建图像预览

您可以从此处下载二进制文件 Download

请帮助

Answer 1

大家好，最后解决我的问题

首先创建一个类文件RGB

using System; 
using System.ComponentModel;
    namespace CMYK_RGB
    {

        public struct RGB
        {
            /// <summary>
            /// Gets an empty RGB structure;
            /// </summary>
            public static readonly RGB Empty = new RGB();

            #region Fields
            private int red;
            private int green;
            private int blue;

            #endregion

            #region Operators
            public static bool operator ==(RGB item1, RGB item2)
            {
                return (
                    item1.Red == item2.Red 
                    && item1.Green == item2.Green 
                    && item1.Blue == item2.Blue
                    );
            }

            public static bool operator !=(RGB item1, RGB item2)
            {
                return (
                    item1.Red != item2.Red 
                    || item1.Green != item2.Green 
                    || item1.Blue != item2.Blue
                    );
            }

            #endregion

            #region Accessors
            [Description("Red component."),]
            public int Red
            {
                get
                {
                    return red;
                }
                set
                {
                    red = (value>255)? 255 : ((value<0)?0 : value);
                }
            }

            [Description("Green component."),]
            public int Green
            {
                get
                {
                    return green;
                }
                set
                {
                    green = (value>255)? 255 : ((value<0)?0 : value);
                }
            }

            [Description("Blue component."),]
            public int Blue
            {
                get
                {
                    return blue;
                }
                set
                {
                    blue = (value>255)? 255 : ((value<0)?0 : value);
                }
            }
            #endregion

            public RGB(int R, int G, int B) 
            {
                red = (R>255)? 255 : ((R<0)?0 : R);
                green = (G>255)? 255 : ((G<0)?0 : G);
                blue = (B>255)? 255 : ((B<0)?0 : B);
            }

            #region Methods
            public override bool Equals(Object obj) 
            {
                if(obj==null || GetType()!=obj.GetType()) return false;

                return (this == (RGB)obj);
            }

            public override int GetHashCode() 
            {
                return Red.GetHashCode() ^ Green.GetHashCode() ^ Blue.GetHashCode();
            }

            #endregion
        } 
    }

现在创建一个窗口窗体并添加图标框，标签，Filedailog和A按钮

private void button1_Click(object sender, EventArgs e)
        {
            int size = -1;
            openFileDialog1.Title = "Open Prt File";

            openFileDialog1.InitialDirectory = @"C:\";
            DialogResult result = openFileDialog1.ShowDialog();
            if (result == DialogResult.OK) // Test result.
            {
                string file = openFileDialog1.FileName;
                label1.Text = file;
                try
                {
                    FileStream stream = File.OpenRead(@file);
                    byte[] NumberOfByteprLine = new byte[4];
                    byte[] NumberOfLineInImage = new byte[4];


                    byte[] buffer = new byte[stream.Length];
                    stream.Read(buffer, 0, buffer.Length);
                    stream.Close();

                    int j = 19;
                    Int64 decValue;
                    decValue = buffer[j--] * 256 * 256 * 256;
                    decValue += buffer[j--] * 256 * 256;
                    decValue += buffer[j--] * 256;
                    decValue += buffer[j--];
                    Int32 ImageHeight = Convert.ToInt32(decValue);

                    j = 15;
                    decValue = buffer[j--] * 256 * 256 * 256;
                    decValue += buffer[j--] * 256 * 256;
                    decValue += buffer[j--] * 256;
                    decValue += buffer[j--];
                    Int32 NumberOfBytePerLine = Convert.ToInt32(decValue);

                    j = 23;
                    decValue = buffer[j--] * 256 * 256 * 256;
                    decValue += buffer[j--] * 256 * 256;
                    decValue += buffer[j--] * 256;
                    decValue += buffer[j--];
                    Int32 ImageWidth = Convert.ToInt32(decValue);

                    string hexXResValue = string.Empty, hexYResValue = string.Empty;
                    for (int i = 11; i > 3; i--)
                    {
                        if (i > 7)
                        {
                            hexYResValue = hexYResValue + Convert.ToInt64(buffer[i]).ToString("X");
                        }
                        else
                        {
                            hexXResValue = hexXResValue + Convert.ToInt64(buffer[i]).ToString("X");
                        }
                    }

                    //Int32 ImageWidth = int.Parse(hexWValue, System.Globalization.NumberStyles.HexNumber);
                    //Int32 ImageHeight = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);

                    Int32 XResolution = int.Parse(hexXResValue, System.Globalization.NumberStyles.HexNumber);
                    Int32 YResolution = int.Parse(hexYResValue, System.Globalization.NumberStyles.HexNumber);

                    Int64 StartByte = 48;

                    int width = NumberOfBytePerLine, hieght = ImageHeight;
                    Bitmap bmp = new Bitmap(width, hieght);
                    int value = 0;
                    for(int i=0; i<ImageHeight;i++)
                    {

                        for (Int32 k = 0; k < NumberOfBytePerLine; k++)
                        {


                            decValue = buffer[StartByte];
                            string hexValue = decValue.ToString("X");

                            int Y = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);

                            decValue = buffer[StartByte + NumberOfBytePerLine];
                            hexValue = decValue.ToString("X");

                            int M = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);

                            decValue = buffer[StartByte + NumberOfBytePerLine*2];
                            hexValue = decValue.ToString("X");

                            int C = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);

                            decValue = buffer[StartByte + NumberOfBytePerLine*3];
                            hexValue = decValue.ToString("X");

                            int K = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);


                             RGB rgb = CMYKtoRGB((double)C / 100.0, (double)M / 100.0, (double)Y / 100.0, (double)K / 100.0);

                            StartByte++;

                            bmp.SetPixel(k, i, Color.FromArgb(rgb.Red, rgb.Green, rgb.Blue));


                            value++;

                        }

                        StartByte = StartByte + (NumberOfBytePerLine * 3);

                    }


                    pictureBox1.Image = bmp;
                    string Path = "C:\\Users\\Abhishek Singh\\Desktop\\PrtFile\\prtfiles\\imageFile.bmp";

                    bmp.Save(Path);


                }
                catch { }
            }
        }



         /// <summary>
        /// Converts CMYK to RGB.
        /// </summary>
        /// <param name="c">Cyan value (must be between 0 and 1).</param>
        /// <param name="m">Magenta value (must be between 0 and 1).</param>
        /// <param name="y">Yellow value (must be between 0 and 1).</param>
        /// <param name="k">Black value (must be between 0 and 1).</param>
        public static RGB CMYKtoRGB(double c, double m, double y, double k)
        {
            int red = Convert.ToInt32((1.0 - c) * (1.0 - k) * 255.0);
            int green = Convert.ToInt32((1.0 - m) * (1.0 - k) * 255.0);
            int blue = Convert.ToInt32((1.0 - y) * (1.0 - k) * 255.0);

            return new RGB(red, green, blue);
        }

Output Screen

Reference

从二进制文件创建图像？

1 个答案: