C# 判断图形A是否在图形B里存在 并返回所在位置的坐标
做了下测试
Bitmap Image1 = (Bitmap)Image.FromFile(@"c:/1.BMP");
Bitmap Image2 = Image1.Clone(new Rectangle(20, 20, 50, 50), Image1.PixelFormat);
Point _Point= Zgke.MyImage.Panit.MyPanit.GetImageContains(Image1, Image2,0);
MessageBox.Show(_Point.ToString());
返回的坐标是20,20
下面是全部代码
/// <summary> /// 判断图形里是否存在另外一个图形 并返回所在位置 /// </summary> /// <param name="p_SourceBitmap">原始图形</param> /// <param name="p_PartBitmap">小图形</param> /// <param name="p_Float">溶差</param> /// <returns>坐标</returns> public static Point GetImageContains(Bitmap p_SourceBitmap, Bitmap p_PartBitmap,int p_Float) { int _SourceWidth = p_SourceBitmap.Width; int _SourceHeight = p_SourceBitmap.Height; int _PartWidth = p_PartBitmap.Width; int _PartHeight = p_PartBitmap.Height; Bitmap _SourceBitmap = new Bitmap(_SourceWidth, _SourceHeight); Graphics _Graphics = Graphics.FromImage(_SourceBitmap); _Graphics.DrawImage(p_SourceBitmap, new Rectangle(0, 0, _SourceWidth, _SourceHeight)); _Graphics.Dispose(); BitmapData _SourceData = _SourceBitmap.LockBits(new Rectangle(0, 0, _SourceWidth, _SourceHeight), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); byte[] _SourceByte = new byte[_SourceData.Stride * _SourceHeight]; Marshal.Copy(_SourceData.Scan0, _SourceByte, 0, _SourceByte.Length); //复制出p_SourceBitmap的相素信息 Bitmap _PartBitmap = new Bitmap(_PartWidth, _PartHeight); _Graphics = Graphics.FromImage(_PartBitmap); _Graphics.DrawImage(p_PartBitmap, new Rectangle(0, 0, _PartWidth, _PartHeight)); _Graphics.Dispose(); BitmapData _PartData = _PartBitmap.LockBits(new Rectangle(0, 0, _PartWidth, _PartHeight), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); byte[] _PartByte = new byte[_PartData.Stride * _PartHeight]; Marshal.Copy(_PartData.Scan0, _PartByte, 0, _PartByte.Length); //复制出p_PartBitmap的相素信息 for (int i = 0; i != _SourceHeight; i++) { if (_SourceHeight - i < _PartHeight) return new Point(-1, -1); //如果 剩余的高 比需要比较的高 还要小 就直接返回 int _PointX = -1; //临时存放坐标 需要包正找到的是在一个X点上 bool _SacnOver = true; //是否都比配的上 for (int z = 0; z != _PartHeight - 1; z++) //循环目标进行比较 { int _TrueX = GetImageContains(_SourceByte, _PartByte, i * _SourceData.Stride, _SourceWidth, _PartWidth, p_Float); if (_TrueX == -1) //如果没找到 { _PointX = -1; //设置坐标为没找到 _SacnOver = false; //设置不进行返回 break; } else { if (z == 0) _PointX = _TrueX; if (_PointX != _TrueX) //如果找到了 也的保证坐标和上一行的坐标一样 否则也返回 { _PointX = -1;//设置坐标为没找到 _SacnOver = false; //设置不进行返回 break; } } } if (_SacnOver) return new Point(_PointX , i); } return new Point(-1, -1); } /// <summary> /// 判断图形里是否存在另外一个图形 所在行的索引 /// </summary> /// <param name="p_Source">原始图形数据</param> /// <param name="p_Part">小图形数据</param> /// <param name="p_SourceIndex">开始位置</param> /// <param name="p_SourceWidth">原始图形宽</param> /// <param name="p_PartWidth">小图宽</param> /// <param name="p_Float">溶差</param> /// <returns>所在行的索引 如果找不到返回-1</returns> private static int GetImageContains(byte[] p_Source, byte[] p_Part, int p_SourceIndex, int p_SourceWidth,int p_PartWidth, int p_Float) { int _PartIndex = 0; int _SourceIndex=p_SourceIndex; for (int i = 0; i < p_SourceWidth; i++) { if (p_SourceWidth - i < p_PartWidth) return -1; Color _CurrentlyColor = Color.FromArgb((int)p_Source[_SourceIndex+3], (int)p_Source[_SourceIndex + 2], (int)p_Source[_SourceIndex + 1], (int)p_Source[_SourceIndex]); Color _CompareColoe = Color.FromArgb((int)p_Part[3], (int)p_Part[2], (int)p_Part[1], (int)p_Part[0]); _SourceIndex += 4; bool _ScanColor = ScanColor(_CurrentlyColor, _CompareColoe, p_Float); if (_ScanColor) { _PartIndex += 4; int _SourceRVA = _SourceIndex; bool _Equals=true; for (int z = 0; z != p_PartWidth-1; z++) { _CurrentlyColor = Color.FromArgb((int)p_Source[_SourceRVA + 3], (int)p_Source[_SourceRVA + 2], (int)p_Source[_SourceRVA + 1], (int)p_Source[_SourceRVA]); _CompareColoe = Color.FromArgb((int)p_Part[_PartIndex + 3], (int)p_Part[_PartIndex + 2], (int)p_Part[_PartIndex + 1], (int)p_Part[_PartIndex]); if (!ScanColor(_CurrentlyColor, _CompareColoe, p_Float)) { _PartIndex = 0; _Equals = false; break; } _PartIndex += 4; _SourceRVA += 4; } if(_Equals)return i; } else { _PartIndex = 0; } } return -1; } /// <summary> /// 检查色彩(可以根据这个更改比较方式 /// </summary> /// <param name="p_CurrentlyColor">当前色彩</param> /// <param name="p_CompareColor">比较色彩</param> /// <param name="p_Float">溶差</param> /// <returns></returns> private static bool ScanColor(Color p_CurrentlyColor, Color p_CompareColor, int p_Float) { int _R = p_CurrentlyColor.R; int _G = p_CurrentlyColor.G; int _B = p_CurrentlyColor.B; return (_R <= p_CompareColor.R + p_Float && _R >= p_CompareColor.R - p_Float) && (_G <= p_CompareColor.G + p_Float && _G >= p_CompareColor.G - p_Float) && (_B <= p_CompareColor.B + p_Float && _B >= p_CompareColor.B - p_Float); }