C# 判斷兩張圖片是否一致的快速方法

    這篇文章主要介紹了C# 判斷兩張圖片是否一致的快速方法,需要的朋友可以參考下
    代碼如下:
    #region 判斷圖片是否一致
    /// <summary>
    /// 判斷圖片是否一致
    /// </summary>
    /// <param name="img">圖片一</param>
    /// <param name="bmp">圖片二</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)
    {
    //將圖片一鎖定到內(nèi)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);
    //將圖片二鎖定到內(nèi)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);
    //長度不相同
    if (length_i != length_b)
    {
    return false;
    }
    else
    {
    //循環(huán)判斷值
    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