C # process images into various effects

Original Image: ISINBAEVA

 

I. Negative Effects
Principle: The GetPixel method obtains the value of each pixel, and then uses the SetPixel method to set the reversed color value to the corresponding vertex.
:

Code implementation:

Negative Film Effect

 Private void button#click (object sender, EventArgs e)
{
// Display the image as a negative film
Try
{
Int Height = this. pictureBox1.Image. Height;
Int Width = this. pictureBox1.Image. Width;
Bitmap newbitmap = new Bitmap (Width, Height );
Bitmap oldbitmap = (Bitmap) this. pictureBox1.Image;
Color pixel;
For (int x = 1; x <Width; x ++)
{
For (int y = 1; y <Height; y ++)
{
Int r, g, B;
Pixel = oldbitmap. GetPixel (x, y );
R = 255-pixel. R;
G = 255-pixel. G;
B = 255-pixel. B;
Newbitmap. SetPixel (x, y, Color. FromArgb (r, g, B ));
}
}
This. pictureBox1.Image = newbitmap;
}
Catch (Exception ex)
{
MessageBox. Show (ex. Message, "Message prompt", MessageBoxButtons. OK, MessageBoxIcon. Information );
}
}

 

Ii. Embossed Effect

Principle: subtract the pixel value of the image pixel from the pixel value of the adjacent pixel, add 128, and use it as the value of the new pixel.

:

Code implementation:

Embossed Effect

 Private void button#click (object sender, EventArgs e)
{
// Display the image with relief effect
Try
{
Int Height = this. pictureBox1.Image. Height;