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这篇文章主要介绍了C# 判断两张图片是否一致的快速方法,需要的朋友可以参考下

代码如下:

#region 判断图片是否一致

/// <summary>

/// 判断图片是否一致

/// </summary>

/// <param name="img">图片一</param>

/// <param name="bmp">图片二</param>

/// <returns>是否一致</returns>

public bool IsSameImg(Bitmap img, Bitmap bmp)

{

//大小一致

if (img.Width == bmp.Width && img.Height == bmp.Height)

{

//将图片一锁定到内存

BitmapData imgData_i = img.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);

IntPtr ipr_i = imgData_i.Scan0;

int length_i = imgData_i.Width * imgData_i.Height * 3;

byte[] imgValue_i = new byte[length_i];

Marshal.Copy(ipr_i, imgValue_i, 0, length_i);

img.UnlockBits(imgData_i);

//将图片二锁定到内存

BitmapData imgData_b = img.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);

IntPtr ipr_b = imgData_b.Scan0;

int length_b = imgData_b.Width * imgData_b.Height * 3;

byte[] imgValue_b = new byte[length_b];

Marshal.Copy(ipr_b, imgValue_b, 0, length_b);

img.UnlockBits(imgData_b);

//长度不相同

if (length_i != length_b)

{

return false;

}

else

{

//循环判断值

for (int i = 0; i < length_i; i++)

{

//不一致

if (imgValue_i[i] != imgValue_b[i])

{

return false;

}

}

return true;

}

}

else

{

return false;

}

}

#endregion

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