| public static normalize ( float val, float dmin, float dmax, float smin, float smax ) : float | ||
| val | float | |
| dmin | float | |
| dmax | float | |
| smin | float | |
| smax | float | |
| 리턴 | float | |
/// <summary>
/// #### Saturate [-100, 100]
/// </summary>
/// <param name="image"></param>
/// <param name="p"></param>
/// <returns></returns>
public BitmapW saturate(BitmapW image, float p)
{
p = Util.normalize(p, 0, 2, -100, 100);
float cr = 0, cg = 0, cb = 0, ca;
int i = 0, j = 0,
h = image.Height(),
w = image.Width();
for (i = 0; i < w; i++)
{
for (j = 0; j < h; j++)
{
Color temp = image.GetPixel(i, j);
cr = temp.R; cg = temp.G; cb = temp.B; ca = temp.A;
float avg = (cr + cg + cb) / 3;
cr = avg + p * (cr - avg);
cg = avg + p * (cg - avg);
cb = avg + p * (cb - avg);
image.SetPixel(i, j, Color.FromArgb((int)Util.clamp(ca, 0, 255), (int)Util.clamp(cr, 0, 255),
(int)Util.clamp(cg, 0, 255), (int)Util.clamp(cb, 0, 255)));
}
}
return(image);
}
/// <summary>
/// #### Constrast [-100, 100]
/// </summary>
/// <param name="f"></param>
/// <param name="c"></param>
/// <returns></returns>
public BitmapW contrast(BitmapW image, float p)
{
p = Util.normalize(p, 0, 2, -100, 100);
float cr = 0, cg = 0, cb = 0, ca;
int i = 0, j = 0,
h = image.Height(),
w = image.Width();
for (i = 0; i < w; i++)
{
for (j = 0; j < h; j++)
{
Color temp = image.GetPixel(i, j);
cr = temp.R; cg = temp.G; cb = temp.B; ca = temp.A;
cr = 255 * contrastc(cr / 255, p);
cg = 255 * contrastc(cg / 255, p);
cb = 255 * contrastc(cb / 255, p);
image.SetPixel(i, j, Color.FromArgb((int)Util.clamp(ca, 0, 255), (int)Util.clamp(cr, 0, 255),
(int)Util.clamp(cg, 0, 255), (int)Util.clamp(cb, 0, 255)));
}
}
return(image);
}
/// <summary>
/// #### Expose [-100, 100]
/// </summary>
/// <param name="image"></param>
/// <param name="p"></param>
/// <returns></returns>
public BitmapW expose(BitmapW image, float p)
{
p = Util.normalize(p, -1, 1, -100, 100);
Point c1 = new Point(0, (int)(255 * p));
Point c2 = new Point((int)(255 - (255 * p)), 255);
return(curves(image, new Point(0, 0), c1, c2, new Point(255, 255)));
}
/// <summary>
/// #### Brighten [-100, 100]
/// </summary>
/// <param name="image"></param>
/// <param name="p"></param>
/// <returns></returns>
public BitmapW brighten(BitmapW image, float p)
{
p = Util.normalize(p, -255, 255, -100, 100);
float cr = 0, cg = 0, cb = 0;
int i = 0, j = 0,
h = image.Height(),
w = image.Width();
for (i = 0; i < w; i++)
{
for (j = 0; j < h; j++)
{
Color temp = image.GetPixel(i, j);
cr = temp.R; cg = temp.G; cb = temp.B;
cr += (p);
cg += (p);
cb += (p);
image.SetPixel(i, j, Color.FromArgb((int)Util.clamp(cr, 0, 255), (int)Util.clamp(cg, 0, 255), (int)Util.clamp(cb, 0, 255)));
}
}
return(image);
}
