. NET picture auto crop white edge function case

1. The project requires uploading white-bottomed images to be trimmed with white edges, so colleagues thanks a function that feels very useful.

2.

  #regionCut white edges/// <summary>        ///cut White edges/// </summary>        /// <param name= "p" ></param>        /// <returns></returns>         Public Staticimage Crop (image p) {intx, y;//For use of x, y coordinates of pixelsBitmap B =NewBitmap (P);//image needed to cropColor C =NewColor ();//pixel color for use of identifying if background            intintleft=0;//furthest left X coordinate            intintright=0;//furthest right X coordinate            intIntbottom =0;//furthest to the bottom Y coordinate            intInttop =0; Y=0;  while(Y <b.height) {x=0;  while(x < B.width)//loop through pixels on X axis until end of image width{C= B.getpixel (x, y);//Get The color of the pixel                    if(C.R! =255&&c.r!=0&& C.G! =255&&c.g!=0&& C.B! =255&&c.b!=0)                    {                        if(C.R < -|| C.G < -|| C.b < -)                        {                            //determine if Pixel is further left than the value we already has                            if(Intleft = =0|| Intleft >x) {intleft=x; }                            //determine if pixel is further to the top than the value we already has                            if(Inttop = =0|| Inttop >y) {inttop=y; }                            //determine if pixel is further right than the value we already has                            if(Intright <= b.width && Intright <x) {intright=x; }                            //determine if pixel is further to the bottom than the value we already has                            if(Intbottom <= b.height && Intbottom <y) {intbottom=y; } }} X+=1; } y+=1; }            intIntnewwidth = Intright;//establish width of new cropped image            intIntnewheight = Intbottom;//establish height of new cropped imageBitmap imgcropped =NewBitmap (Intnewwidth-intleft +2, Intnewheight-inttop +2); Graphics Objgraphics=graphics.fromimage (imgcropped); //set the background color to white (you can chooseobjgraphics.clear (System.Drawing.Color.Transparent); intIntstarttop =1-Inttop;///+ 5            intIntstartleft =1-Intleft;///+ 5            //Draw The original image to your new cropped sized imageObjgraphics.drawimage (b, Intstartleft, intstarttop);            B.dispose ();            Objgraphics.dispose (); //return the cropped image to the caller            returnimgcropped; }

. NET picture auto crop white edge function case