WPF：图像处理（三）二值化(3)

            else 
                threshold = IterativeThreshold(GrayArray); 
 
            // 将灰度数组转换为二值数据 
            Int32 PixelHeight = bitmap.PixelHeight; 
            Int32 PixelWidth = bitmap.PixelWidth; 
            Int32 Stride = ((PixelWidth + 31) >> 5) << 2; 
            Byte[] Pixels = new Byte[PixelHeight * Stride]; 
            for (Int32 i = 0; i < PixelHeight; i++) 
            { 
                Int32 Base = i * Stride; 
                for (Int32 j = 0; j < PixelWidth; j++) 
                { 
                    if (GrayArray[i, j] > threshold) 
                    { 
                        Pixels[Base + (j >> 3)] |= Convert.ToByte(0x80 >> (j & 0x7)); 
                    } 
                } 
            } 
 
            // 从灰度数据中创建灰度图像 
            return BitmapSource.Create(PixelWidth, PixelHeight, 96, 96, PixelFormats.Indexed1, BitmapPalettes.BlackAndWhite, Pixels, Stride); 
        } 
    } 
} 

 

作者：秦建辉