C # pointer manipulation image binary processing

        /// <summary>        ///Two value image/// </summary>        /// <param name= "BMP" ></param>        /// <returns></returns>        Private Static unsafeBitmap binaryzation (Bitmap bmp) {BitmapData Dstdata= BMP. LockBits (NewRectangle (0,0, BMP. Width, BMP. Height), Imagelockmode.readwrite, BMP.            PixelFormat); byte* Data = (byte*) (dstdata.scan0); //convert the image to 0, 12 is worth the image;            intStep =Dstdata.stride; intmeans = Getthreshold (data, BMP. Height *step);  for(inty =0; Y < BMP. Height; y++)            {                 for(intx =0; x < BMP. Width *3; X + =3)                {                    if(Data[y * step + x +2] >means) Data[y* Step +x]= Data[y * Step + x +1]                            = Data[y * Step + x +2]                            =255; ElseData[y* Step +x]= Data[y * Step + x +1]                            = Data[y * Step + x +2]                            =0; }} BMP.            Unlockbits (Dstdata); returnbmp; }        /// <summary>        ///binary Image acquisition of threshold value/// </summary>        /// <param name= "Inpixels" ></param>        /// <param name= "Length" >Height * Stride</param>        /// <returns></returns>        Private Static unsafe intGetthreshold (byte* Inpixels,intlength) {            intInithreshold =127; intFinalthreshold =0; List<int> temp =Newlist<int>();  for(intindex =0; Index < length; Index + =3) {temp. ADD (Inpixels[index+2]); } List<int> sub1 =Newlist<int>(); List<int> sub2 =Newlist<int>(); intMEANS1 =0, Means2 =0;  while(Finalthreshold! =inithreshold) {Finalthreshold=Inithreshold;  for(inti =0; I < temp. Count (); i++)                {                    if(Temp[i] <=inithreshold) {sub1.                    ADD (Temp[i]); }                    Else{sub2.                    ADD (Temp[i]); }} means1=Getmeans (SUB1); Means2=Getmeans (SUB2); Sub1.                Clear (); Sub2.                Clear (); Inithreshold= (means1 + means2)/2; }            returnFinalthreshold; }        /// <summary>        ///Image binary acquisition means/// </summary>        /// <param name= "Data" ></param>        /// <returns></returns>        Private Static intGetmeans (list<int>data) {            intresult =0; intSize =data.            Count (); foreach(intIinchdata) {Result+=i; }            return(Result/size); }

C # pointer manipulation image binary processing