2014.2.27 merge Images

Public byte [] transpic (string picpath) // convert the image size into bytes

{

Image imgphoto = image. fromfile (picpath );

Int oldx = imgphoto. width;

Int Oldy = imgphoto. height;

 

// New image size

Int Cx = 255;

Int Cy = 255;

 

If (oldx> = Oldy)

Cy = convert. toint32 (255 * convert. todouble (Oldy)/convert. todouble (oldx ));

If (oldx <Oldy)

Cx = convert. toint32 (255 * convert. todouble (oldx)/convert. todouble (Oldy ));

 

Int dx = 255-cx;

Int DY = 255-cy;

 

Image newimage = new Bitmap (255,255 );

Graphics G = graphics. fromimage (newimage );

 

// Clear the canvas and set the background to white

G. Clear (system. Drawing. color. White );

 

// Set the painting quality of the canvas

 

Image Bm = new Bitmap (255,255); // set a blank image first

If (dx> 0) // vertical bar Image

{

// Insert dx/2-width, 255-height blank image on both sides of the original image

// Image Merging

Bm = new Bitmap (dx/2,255 );

G. drawimage (BM, 0, 0, dx/2,255); // Add blank space to the left of the canvas

G. drawimage (imgphoto, dx/2, 0, CX, CY); // Add the original vertical image from dx/2. At this time, there is still a blank dx/2 on the right side of X.

G. drawimage (BM, 255-dx/2, 0, dx/2, 0); // fill in the blank image on the right

}

If (dy> 0)

{

Bm = new Bitmap (255, Dy );

G. drawimage (BM, 0, 0, dx, Dy );

G. drawimage (imgphoto, dx, Dy, CX, CY );

}

 

G. Dispose ();

Imgphoto. Dispose ();

 

Memorystream MS = new memorystream ();

Newimage. Save (MS, system. Drawing. imaging. imageformat. JPEG );

 

Byte [] imagedata = Ms. getbuffer ();

 

Newimage. Dispose ();

Ms. Dispose ();

BM. Dispose ();

 

Return imagedata;

 

}

 

Or

 

// New image size

Int Cx = treatx;

Int Cy = Treaty;

Double r16_9 = 16.0/9.0;

 

Image imgphoto = image. fromfile (picpath );

Int oldx = imgphoto. width;

Int Oldy = imgphoto. height;

 

Int dltx = 0;

Int dlty = 0;

 

If (oldx> = Oldy) // normal horizontal photograph

{

Double oldxyrate = convert. todouble (oldx)/convert. todouble (Oldy );

 

If (oldxyrate> r16_9) // returns the source image width.

{

Int justx = convert. toint32 (Oldy * r16_9 );

Dltx = (oldx-justx)/2; // The number of cropped sides of the source Image

}

Else if (r16_9> oldxyrate) // The Source image is too high.

{

Int Justy = convert. toint32 (oldx/r16_9 );

Dlty = (Oldy-Justy)/2; // The number of cropped up and down images

}

}

If (Oldy> oldx) // the portrait is also taken

{

Cx = treatxx;

Cy = Treaty;

Double r9_16 = 9.0/16.0;

 

Double oldxyrate = convert. todouble (oldx)/convert. todouble (Oldy );

 

 

If (oldxyrate> r9_16) // returns the source image width.

{

Int justx = convert. toint32 (Oldy * r9_16 );

Dltx = (oldx-justx)/2; // The number of cropped sides of the source Image

}

Else if (r9_16> oldxyrate) // The Source image is too high.

{

Int Justy = convert. toint32 (oldx/r9_16 );

Dlty = (Oldy-Justy)/2; // The number of cropped up and down images

}

}

 

 

 

Image newimage = new Bitmap (CX, CY );

Graphics G = graphics. fromimage (newimage );

 

G. drawimage (imgphoto, new rectangle (0, 0, CX, CY), new rectangle (dltx, dlty, imgphoto. width-2 * dltx, imgphoto. height-2 * dlty), graphicsunit. pixel );

G. Dispose ();

Newimage. Dispose ();

Imgphoto. Dispose ();

 

 

Return newimage;

2014.2.27 merge Images