private void ChangeContrast(breinImage image)
{
byte[] precalc = new byte[256];
// Precalculate all changes
for(int i = 0;i < 256;i++) {
double val = i / 255.0;
val -= 0.5;
val *= _contrast;
val += 0.5;
val = (int)Math.Round(val * 255);
if(val < 0) {
val = 0;
}
else if(val > 255) {
val = 255;
}
precalc[i] = (byte)val;
}
byte[] b = image.ByteArray;
for(int i = 0, l = b.Length;i < l;i += 4) {
b[i] = precalc[b[i]]; // b
b[i + 1] = precalc[b[i + 1]]; // g
b[i + 2] = precalc[b[i + 2]]; // r
}
image.ByteArray = b;
}
private void ChangeContrast(breinImage image)
{
byte[] precalc = new byte[256];
// Precalculate all changes
for (int i = 0; i < 256; i++)
{
double val = i / 255.0;
val -= 0.5;
val *= _contrast;
val += 0.5;
val = (int)Math.Round(val * 255);
if (val < 0)
{
val = 0;
}
else if (val > 255)
{
val = 255;
}
precalc[i] = (byte)val;
}
byte[] b = image.ByteArray;
for (int i = 0, l = b.Length; i < l; i += 4)
{
b[i] = precalc[b[i]]; // b
b[i + 1] = precalc[b[i + 1]]; // g
b[i + 2] = precalc[b[i + 2]]; // r
}
image.ByteArray = b;
}
public void Run(breinImage image)
{
byte[] b = image.ByteArray;
byte[] dest = new byte[b.Length];
GaussianBlur(image.Width, image.Height, _radius, _amount, ref b, ref dest);
image.ByteArray = dest;
}
public void Run(breinImage image)
{
byte[] b = image.ByteArray;
byte[] dest = new byte[b.Length];
GaussianBlur(image.Width, image.Height, _radius, _amount, ref b, ref dest);
image.ByteArray = dest;
}
private static void Sharpen(breinImage image, double amount, double radius)
{
byte[] src = image.ByteArray;
byte[] dest = new byte[src.Length];
GaussianBlurFilter.GaussianBlur(image.Width, image.Height, radius, amount, ref src, ref dest);
int i = 0;
int r, g, b;
for (int x = 0, l = image.Width; x < l; x++)
{
for (int y = 0, k = image.Height; y < k; y++)
{
// Apply difference of gaussian blur filter
b = src[i] + (int)((src[i] - dest[i]) * amount);
g = src[i + 1] + (int)((src[i + 1] - dest[i + 1]) * amount);
r = src[i + 2] + (int)((src[i + 2] - dest[i + 2]) * amount);
// Keep inside range 0 to 255
if (r < 0)
{
r = 0;
}
else if (r > 255)
{
r = 255;
}
if (g < 0)
{
g = 0;
}
else if (g > 255)
{
g = 255;
}
if (b < 0)
{
b = 0;
}
else if (b > 255)
{
b = 255;
}
// Write back final bytes
dest[i] = (byte)b;
dest[i + 1] = (byte)g;
dest[i + 2] = (byte)r;
i += 4;
}
}
image.ByteArray = dest;
}
private static void DesaturateImage(breinImage image)
{
byte[] b = image.ByteArray;
for(int i = 0, l = b.Length;i < l;i += 4) {
b[i] = b[i + 1] = b[i + 2] = (byte)(.299 * b[i + 2] + .587 * b[i + 1] + .114 * b[i]);
}
image.ByteArray = b;
}
private static void DesaturateImage(breinImage image)
{
byte[] b = image.ByteArray;
for (int i = 0, l = b.Length; i < l; i += 4)
{
b[i] = b[i + 1] = b[i + 2] = (byte)(.299 * b[i + 2] + .587 * b[i + 1] + .114 * b[i]);
}
image.ByteArray = b;
}
private void ChangeBrightness(breinImage image)
{
byte[] b = image.ByteArray;
for(int i = 0, l = b.Length;i < l;i += 4) {
b[i] = _precalcTable[b[i]]; // b
b[i + 1] = _precalcTable[b[i + 1]]; // g
b[i + 2] = _precalcTable[b[i + 2]]; // r
}
image.ByteArray = b;
}
private static void InvertImage(breinImage image)
{
byte[] b = image.ByteArray;
for(int i = 0, l = b.Length;i < l;i += 4) {
b[i] = (byte)(255 - b[i]); // b
b[i + 1] = (byte)(255 - b[i + 1]); // g
b[i + 2] = (byte)(255 - b[i + 2]); // r
}
image.ByteArray = b;
}
private void ChangeBrightness(breinImage image)
{
byte[] b = image.ByteArray;
for (int i = 0, l = b.Length; i < l; i += 4)
{
b[i] = _precalcTable[b[i]]; // b
b[i + 1] = _precalcTable[b[i + 1]]; // g
b[i + 2] = _precalcTable[b[i + 2]]; // r
}
image.ByteArray = b;
}
private static void InvertImage(breinImage image)
{
byte[] b = image.ByteArray;
for (int i = 0, l = b.Length; i < l; i += 4)
{
b[i] = (byte)(255 - b[i]); // b
b[i + 1] = (byte)(255 - b[i + 1]); // g
b[i + 2] = (byte)(255 - b[i + 2]); // r
}
image.ByteArray = b;
}
private static void Sharpen(breinImage image, double amount, double radius)
{
byte[] src = image.ByteArray;
byte[] dest = new byte[src.Length];
GaussianBlurFilter.GaussianBlur(image.Width, image.Height, radius, amount, ref src, ref dest);
int i = 0;
int r, g, b;
for(int x = 0, l = image.Width;x < l;x++) {
for(int y = 0, k = image.Height;y < k;y++) {
// Apply difference of gaussian blur filter
b = src[i] + (int)((src[i] - dest[i]) * amount);
g = src[i + 1] + (int)((src[i + 1] - dest[i + 1]) * amount);
r = src[i + 2] + (int)((src[i + 2] - dest[i + 2]) * amount);
// Keep inside range 0 to 255
if(r < 0)
r = 0;
else if(r > 255)
r = 255;
if(g < 0)
g = 0;
else if(g > 255)
g = 255;
if(b < 0)
b = 0;
else if(b > 255)
b = 255;
// Write back final bytes
dest[i] = (byte)b;
dest[i + 1] = (byte)g;
dest[i + 2] = (byte)r;
i += 4;
}
}
image.ByteArray = dest;
}
public void Run(breinImage image)
{
Sharpen(image, _amount, _radius);
}
public void Run(breinImage image)
{
PrecalculateTable();
ChangeBrightness(image);
}
public void Run(breinImage image)
{
Sharpen(image, _amount, _radius);
}
public void Run(breinImage image)
{
InvertImage(image);
}
public void Run(breinImage image)
{
PrecalculateTable();
ChangeBrightness(image);
}
public void Run(breinImage image)
{
DesaturateImage(image);
}
public void Run(breinImage image)
{
ChangeContrast(image);
}
public void Run(breinImage image)
{
DesaturateImage(image);
}
public void Run(breinImage image)
{
InvertImage(image);
}
public void Run(breinImage image)
{
ChangeContrast(image);
}
