julianr7154ln@outlook.com

瓜拉尼語翻譯

                }
            }
        }

範例程式：

            myBitmap.UnlockBits(byteArray);
            return ImgData;
        }

 C#的Bitmap類型另供應一LockBits（）函式可將影象的指定區域資料以Byte Array的型式存放在記憶體空間中,翻譯並傳回BitmapData類型的物件，個中BitmapData.Scan0則寄存像素Byte Array中第一個Byte的指標。 程式可以讀取

Basic Image Processing support in C#>

            unsafe　　　　　　　
            {                                   // 指標取出影像資料
                byte* imgPtr = (byte*) byteArray.Scan0;
                for (int y = 0; y < Height; y++)
                {
                    for (int x = 0; x < Width; x++)
                    {
                        *imgPtr = (byte)ImgData[x, y, 2];       //B
                      
                        *(imgPtr+1) = (byte)ImgData[x翻譯社 y, 1];   //G
                      
                        *(imgPtr+2) = (byte)ImgData[x, y翻譯社 0];   //R 
                        imgPtr += 3;
                    }
                    imgPtr += ByteOfSkip; // 跳過Padding bytes
                }
            }
            myBitmap.UnlockBits(byteArray);
            return myBitmap;
        }

程式碼以下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Windows.Forms;

        private void GrayProcess(int[, ,] ImgData)
        {
            int Width = ImgData.GetLength(0);
            int Height = ImgData.GetLength(1);
          
            for (int y = 0; y < Height; y++)
            {
                for (int x = 0; x < Width; x++)
                {

BitmapData byteArray = myBitmap.LockBits( new Rectangle( 0 , 0 , myBitmap.Width , myBitmap.Height ) 翻譯社 ImageLockMode.ReadWrite  , PixelFormat.Format24bppRgb  );

並以Bitmap類型的GetPixel(x翻譯社y)及SetPixel(x翻譯社y,color)兩個函數，對影象的每一個

>

語法如下:

讀入影象檔轉為像素資料陣列，並進行灰階（Ｇrey Scale) 處置懲罰.

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        Bitmap myBitmap = null;
        private void button1_Click(object sender翻譯社 EventArgs e)     ////載入圖檔
        {
            this.openFileDialog1.Filter = "所有檔案|*.*|BMP File| *.bmp|JPEG File|*.jpg| GIF File|*.gif";

    }
}

Bitmap myBitmap = new Bitmap(ImageFileName) 載入影象檔.

        }
        private int[翻譯社 翻譯社] GetImgData(Bitmap myBitmap)
        {
            int[,翻譯社] ImgData = new int[myBitmap.Width, myBitmap.Height, 3];
            BitmapData byteArray = myBitmap.LockBits(new Rectangle(0, 0翻譯社 myBitmap.Width, myBitmap.Height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
            int ByteOfSkip = byteArray.Stride - byteArray.Width * 3;
            unsafe　　//專案－＞屬性－＞建置－＞允許Unsafe程式碼須拔取。           

處置懲罰，則必需反複呼叫上述兩個函式上百萬次，這類體式格局對程式而言顯得太沒有用率。

［C#] 載入影象檔一文中提到，C# 語言可使用

               pictureBox2.Image = null;
        }

Bitmap myBitmap =  new Bitmap( ImageFileName );

                    int gray = (int) ((double) ImgData[x, y, 0] * 0.299  + (double) ImgData[x, y, 1] * 0.587 + (double) ImgData[x, y翻譯社 2] * 0.114);

指標內容的體式格局，將影象像素資料一一讀入預定的像素陣列中並進行後續的影像處理，以加速速度。

            BitmapData byteArray = myBitmap.LockBits(new Rectangle(0, 0翻譯社 Width翻譯社 Height),
                                           ImageLockMode.WriteOnly,
                                           PixelFormat.Format24bppRgb);
         
            //Padding bytes的長度
            int ByteOfSkip = byteArray.Stride - myBitmap.Width * 3;

                    ImgData[x, y, 0] = gray;
                    ImgData[x翻譯社 y, 1] = gray;
                    ImgData[x翻譯社 y, 2] = gray;

        private void button2_Click(object sender, EventArgs e)  ///灰階影像處置懲罰
        {
            int[翻譯社 ,] ImgData = GetImgData(myBitmap);
            GrayProcess(ImgData);
            Bitmap processedBitmap = CreateBitmap(ImgData);
            pictureBox2.Image = processedBitmap;

參考資料:

        public static Bitmap CreateBitmap(int[翻譯社 ,] ImgData)
        {   
            int Width = ImgData.GetLength(0);
            int Height = ImgData.GetLength(1);
            Bitmap myBitmap = new Bitmap(Width翻譯社 Height, PixelFormat.Format24bppRgb);

 unsafe　　　//進行指標處置所須宣佈。專案－＞屬性－＞建置－＞容許Unsafe程式碼須拔取。　
            {
                byte* imgPtr = (byte*)(byteArray.Scan0);
                for (int y = 0; y < byteArray.Height; y++)
                {
                    for (int x = 0; x < byteArray.Width; x++)
                    {
                        ImgData[x, y, 2] = (int) *(imgPtr);
                        ImgData[x, y, 1] = (int) *(imgPtr + 1);
                        ImgData[x, y, 0] = (int) *(imgPtr + 2);
                        imgPtr += 3;
                    }
                    imgPtr += ByteOfSkip;
                }
            }

像素的R, G翻譯社 B值做讀出和寫入的動作翻譯但假如對一張百萬像素的影象做影象

            if (openFileDialog1.ShowDialog() == DialogResult.OK)   ////由對話框拔取圖檔
            {
                myBitmap = new Bitmap(openFileDialog1.FileName);
                pictureBox1.Image = myBitmap;
            }