效果图
代码
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | private unsafe void BlendImages1(Bitmap img1, Bitmap img2){ // 确定两个图像的重叠区域 Rectangle rect = new Rectangle(0, 0, Math.Min(img1.Width, img2.Width), Math.Min(img1.Height, img2.Height)); // 创建输出图像，尺寸为重叠区域大小 Bitmap blendedImage = new Bitmap(rect.Width, rect.Height, PixelFormat.Format32bppArgb); // Lock the bits of each image and get the BitmapData. BitmapData data1 = img1.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb); BitmapData data2 = img2.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb); BitmapData dataBlended = blendedImage.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb); int bytesPerPixel = 4; // For Format32bppArgb int stride1 = data1.Stride; int stride2 = data2.Stride; int strideBlended = dataBlended.Stride; byte* ptr1 = (byte*)data1.Scan0.ToPointer(); byte* ptr2 = (byte*)data2.Scan0.ToPointer(); byte* ptrBlended = (byte*)dataBlended.Scan0.ToPointer(); for (int y = 0; y > 8)); // B rowPtrBlended[pixelOffset + 1] = (byte)(255 - ((255 - rowPtr1[pixelOffset + 1]) * (255 - rowPtr2[pixelOffset + 1]) >> 8)); // G rowPtrBlended[pixelOffset + 2] = (byte)(255 - ((255 - rowPtr1[pixelOffset + 2]) * (255 - rowPtr2[pixelOffset + 2]) >> 8)); // R rowPtrBlended[pixelOffset + 3] = (byte)255; // A } } } // Unlock the bits of each image after processing. img1.UnlockBits(data1); img2.UnlockBits(data2); blendedImage.UnlockBits(dataBlended); // Display the blended image. pictureBoxResult.Image = blendedImage;} |
素材
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