www.pudn.com > BloodVessel.rar > ximadsp.cpp
// xImaDsp.cpp : DSP functions
/* 07/08/2001 v1.00 - Davide Pizzolato - www.xdp.it
* CxImage version 5.99c 17/Oct/2004
*/
#include "ximage.h"
#include "ximaiter.h"
#if CXIMAGE_SUPPORT_DSP
////////////////////////////////////////////////////////////////////////////////
/**
* Converts the image to B&W.
* The Mean() function can be used for calculating the optimal threshold.
* \param level: the lightness threshold.
* \return true if everything is ok
*/
bool CxImage::Threshold(BYTE level)
{
if (!pDib) return false;
if (head.biBitCount == 1) return true;
GrayScale();
CxImage tmp(head.biWidth,head.biHeight,1);
if (!tmp.IsValid()) return false;
for (long y=0;ylevel)
tmp.SetPixelIndex(x,y,1);
else
tmp.SetPixelIndex(x,y,0);
}
}
tmp.SetPaletteColor(0,0,0,0);
tmp.SetPaletteColor(1,255,255,255);
Transfer(tmp);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Extract RGB channels from the image. Each channel is an 8 bit grayscale image.
* \param r,g,b: pointers to CxImage objects, to store the splited channels
* \return true if everything is ok
*/
bool CxImage::SplitRGB(CxImage* r,CxImage* g,CxImage* b)
{
if (!pDib) return false;
if (r==NULL && g==NULL && b==NULL) return false;
CxImage tmpr(head.biWidth,head.biHeight,8);
CxImage tmpg(head.biWidth,head.biHeight,8);
CxImage tmpb(head.biWidth,head.biHeight,8);
RGBQUAD color;
for(long y=0; yTransfer(tmpr);
if (g) g->Transfer(tmpg);
if (b) b->Transfer(tmpb);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Extract CMYK channels from the image. Each channel is an 8 bit grayscale image.
* \param c,m,y,k: pointers to CxImage objects, to store the splited channels
* \return true if everything is ok
*/
bool CxImage::SplitCMYK(CxImage* c,CxImage* m,CxImage* y,CxImage* k)
{
if (!pDib) return false;
if (c==NULL && m==NULL && y==NULL && k==NULL) return false;
CxImage tmpc(head.biWidth,head.biHeight,8);
CxImage tmpm(head.biWidth,head.biHeight,8);
CxImage tmpy(head.biWidth,head.biHeight,8);
CxImage tmpk(head.biWidth,head.biHeight,8);
RGBQUAD color;
for(long yy=0; yyTransfer(tmpc);
if (m) m->Transfer(tmpm);
if (y) y->Transfer(tmpy);
if (k) k->Transfer(tmpk);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Extract YUV channels from the image. Each channel is an 8 bit grayscale image.
* \param y,u,v: pointers to CxImage objects, to store the splited channels
* \return true if everything is ok
*/
bool CxImage::SplitYUV(CxImage* y,CxImage* u,CxImage* v)
{
if (!pDib) return false;
if (y==NULL && u==NULL && v==NULL) return false;
CxImage tmpy(head.biWidth,head.biHeight,8);
CxImage tmpu(head.biWidth,head.biHeight,8);
CxImage tmpv(head.biWidth,head.biHeight,8);
RGBQUAD color;
for(long yy=0; yyTransfer(tmpy);
if (u) u->Transfer(tmpu);
if (v) v->Transfer(tmpv);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Extract YIQ channels from the image. Each channel is an 8 bit grayscale image.
* \param y,i,q: pointers to CxImage objects, to store the splited channels
* \return true if everything is ok
*/
bool CxImage::SplitYIQ(CxImage* y,CxImage* i,CxImage* q)
{
if (!pDib) return false;
if (y==NULL && i==NULL && q==NULL) return false;
CxImage tmpy(head.biWidth,head.biHeight,8);
CxImage tmpi(head.biWidth,head.biHeight,8);
CxImage tmpq(head.biWidth,head.biHeight,8);
RGBQUAD color;
for(long yy=0; yyTransfer(tmpy);
if (i) i->Transfer(tmpi);
if (q) q->Transfer(tmpq);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Extract XYZ channels from the image. Each channel is an 8 bit grayscale image.
* \param x,y,z: pointers to CxImage objects, to store the splited channels
* \return true if everything is ok
*/
bool CxImage::SplitXYZ(CxImage* x,CxImage* y,CxImage* z)
{
if (!pDib) return false;
if (x==NULL && y==NULL && z==NULL) return false;
CxImage tmpx(head.biWidth,head.biHeight,8);
CxImage tmpy(head.biWidth,head.biHeight,8);
CxImage tmpz(head.biWidth,head.biHeight,8);
RGBQUAD color;
for(long yy=0; yyTransfer(tmpx);
if (y) y->Transfer(tmpy);
if (z) z->Transfer(tmpz);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Extract HSL channels from the image. Each channel is an 8 bit grayscale image.
* \param h,s,l: pointers to CxImage objects, to store the splited channels
* \return true if everything is ok
*/
bool CxImage::SplitHSL(CxImage* h,CxImage* s,CxImage* l)
{
if (!pDib) return false;
if (h==NULL && s==NULL && l==NULL) return false;
CxImage tmph(head.biWidth,head.biHeight,8);
CxImage tmps(head.biWidth,head.biHeight,8);
CxImage tmpl(head.biWidth,head.biHeight,8);
RGBQUAD color;
for(long y=0; yTransfer(tmph);
if (s) s->Transfer(tmps);
if (l) l->Transfer(tmpl);
return true;
}
////////////////////////////////////////////////////////////////////////////////
#define HSLMAX 255 /* H,L, and S vary over 0-HSLMAX */
#define RGBMAX 255 /* R,G, and B vary over 0-RGBMAX */
/* HSLMAX BEST IF DIVISIBLE BY 6 */
/* RGBMAX, HSLMAX must each fit in a BYTE. */
/* Hue is undefined if Saturation is 0 (grey-scale) */
/* This value determines where the Hue scrollbar is */
/* initially set for achromatic colors */
#define HSLUNDEFINED (HSLMAX*2/3)
////////////////////////////////////////////////////////////////////////////////
RGBQUAD CxImage::RGBtoHSL(RGBQUAD lRGBColor)
{
BYTE R,G,B; /* input RGB values */
BYTE H,L,S; /* output HSL values */
BYTE cMax,cMin; /* max and min RGB values */
WORD Rdelta,Gdelta,Bdelta; /* intermediate value: % of spread from max*/
R = lRGBColor.rgbRed; /* get R, G, and B out of DWORD */
G = lRGBColor.rgbGreen;
B = lRGBColor.rgbBlue;
cMax = max( max(R,G), B); /* calculate lightness */
cMin = min( min(R,G), B);
L = (BYTE)((((cMax+cMin)*HSLMAX)+RGBMAX)/(2*RGBMAX));
if (cMax==cMin){ /* r=g=b --> achromatic case */
S = 0; /* saturation */
H = HSLUNDEFINED; /* hue */
} else { /* chromatic case */
if (L <= (HSLMAX/2)) /* saturation */
S = (BYTE)((((cMax-cMin)*HSLMAX)+((cMax+cMin)/2))/(cMax+cMin));
else
S = (BYTE)((((cMax-cMin)*HSLMAX)+((2*RGBMAX-cMax-cMin)/2))/(2*RGBMAX-cMax-cMin));
/* hue */
Rdelta = (WORD)((((cMax-R)*(HSLMAX/6)) + ((cMax-cMin)/2) ) / (cMax-cMin));
Gdelta = (WORD)((((cMax-G)*(HSLMAX/6)) + ((cMax-cMin)/2) ) / (cMax-cMin));
Bdelta = (WORD)((((cMax-B)*(HSLMAX/6)) + ((cMax-cMin)/2) ) / (cMax-cMin));
if (R == cMax)
H = (BYTE)(Bdelta - Gdelta);
else if (G == cMax)
H = (BYTE)((HSLMAX/3) + Rdelta - Bdelta);
else /* B == cMax */
H = (BYTE)(((2*HSLMAX)/3) + Gdelta - Rdelta);
// if (H < 0) H += HSLMAX; //always false
if (H > HSLMAX) H -= HSLMAX;
}
RGBQUAD hsl={L,S,H,0};
return hsl;
}
////////////////////////////////////////////////////////////////////////////////
float CxImage::HueToRGB(float n1,float n2, float hue)
{
// fixed implementation for HSL2RGB routine
float rValue;
if (hue > 360)
hue = hue - 360;
else if (hue < 0)
hue = hue + 360;
if (hue < 60)
rValue = n1 + (n2-n1)*hue/60.0f;
else if (hue < 180)
rValue = n2;
else if (hue < 240)
rValue = n1+(n2-n1)*(240-hue)/60;
else
rValue = n1;
return rValue;
}
////////////////////////////////////////////////////////////////////////////////
RGBQUAD CxImage::HSLtoRGB(COLORREF cHSLColor)
{
return HSLtoRGB(RGBtoRGBQUAD(cHSLColor));
}
////////////////////////////////////////////////////////////////////////////////
RGBQUAD CxImage::HSLtoRGB(RGBQUAD lHSLColor)
{
// fixed implementation for HSL2RGB routine
float h,s,l;
float m1,m2;
BYTE r,g,b;
h = (float)lHSLColor.rgbRed * 360.0f/255.0f;
s = (float)lHSLColor.rgbGreen/255.0f;
l = (float)lHSLColor.rgbBlue/255.0f;
if (l <= 0.5) m2 = l * (1+s);
else m2 = l + s - l*s;
m1 = 2 * l - m2;
if (s == 0) {
r=g=b=(BYTE)(l*255.0f);
} else {
r = (BYTE)(HueToRGB(m1,m2,h+120) * 255.0f);
g = (BYTE)(HueToRGB(m1,m2,h) * 255.0f);
b = (BYTE)(HueToRGB(m1,m2,h-120) * 255.0f);
}
RGBQUAD rgb = {b,g,r,0};
return rgb;
}
////////////////////////////////////////////////////////////////////////////////
RGBQUAD CxImage::YUVtoRGB(RGBQUAD lYUVColor)
{
int U,V,R,G,B;
float Y = lYUVColor.rgbRed;
U = lYUVColor.rgbGreen - 128;
V = lYUVColor.rgbBlue - 128;
// R = (int)(1.164 * Y + 2.018 * U);
// G = (int)(1.164 * Y - 0.813 * V - 0.391 * U);
// B = (int)(1.164 * Y + 1.596 * V);
R = (int)( Y + 1.403f * V);
G = (int)( Y - 0.344f * U - 0.714f * V);
B = (int)( Y + 1.770f * U);
R= min(255,max(0,R));
G= min(255,max(0,G));
B= min(255,max(0,B));
RGBQUAD rgb={(BYTE)B,(BYTE)G,(BYTE)R,0};
return rgb;
}
////////////////////////////////////////////////////////////////////////////////
RGBQUAD CxImage::RGBtoYUV(RGBQUAD lRGBColor)
{
int Y,U,V,R,G,B;
R = lRGBColor.rgbRed;
G = lRGBColor.rgbGreen;
B = lRGBColor.rgbBlue;
// Y = (int)( 0.257 * R + 0.504 * G + 0.098 * B);
// U = (int)( 0.439 * R - 0.368 * G - 0.071 * B + 128);
// V = (int)(-0.148 * R - 0.291 * G + 0.439 * B + 128);
Y = (int)(0.299f * R + 0.587f * G + 0.114f * B);
U = (int)((B-Y) * 0.565f + 128);
V = (int)((R-Y) * 0.713f + 128);
Y= min(255,max(0,Y));
U= min(255,max(0,U));
V= min(255,max(0,V));
RGBQUAD yuv={(BYTE)V,(BYTE)U,(BYTE)Y,0};
return yuv;
}
////////////////////////////////////////////////////////////////////////////////
RGBQUAD CxImage::YIQtoRGB(RGBQUAD lYIQColor)
{
int I,Q,R,G,B;
float Y = lYIQColor.rgbRed;
I = lYIQColor.rgbGreen - 128;
Q = lYIQColor.rgbBlue - 128;
R = (int)( Y + 0.956f * I + 0.621f * Q);
G = (int)( Y - 0.273f * I - 0.647f * Q);
B = (int)( Y - 1.104f * I + 1.701f * Q);
R= min(255,max(0,R));
G= min(255,max(0,G));
B= min(255,max(0,B));
RGBQUAD rgb={(BYTE)B,(BYTE)G,(BYTE)R,0};
return rgb;
}
////////////////////////////////////////////////////////////////////////////////
RGBQUAD CxImage::RGBtoYIQ(RGBQUAD lRGBColor)
{
int Y,I,Q,R,G,B;
R = lRGBColor.rgbRed;
G = lRGBColor.rgbGreen;
B = lRGBColor.rgbBlue;
Y = (int)( 0.2992f * R + 0.5868f * G + 0.1140f * B);
I = (int)( 0.5960f * R - 0.2742f * G - 0.3219f * B + 128);
Q = (int)( 0.2109f * R - 0.5229f * G + 0.3120f * B + 128);
Y= min(255,max(0,Y));
I= min(255,max(0,I));
Q= min(255,max(0,Q));
RGBQUAD yiq={(BYTE)Q,(BYTE)I,(BYTE)Y,0};
return yiq;
}
////////////////////////////////////////////////////////////////////////////////
RGBQUAD CxImage::XYZtoRGB(RGBQUAD lXYZColor)
{
int X,Y,Z,R,G,B;
X = lXYZColor.rgbRed;
Y = lXYZColor.rgbGreen;
Z = lXYZColor.rgbBlue;
double k=1.088751;
R = (int)( 3.240479f * X - 1.537150f * Y - 0.498535f * Z * k);
G = (int)( -0.969256f * X + 1.875992f * Y + 0.041556f * Z * k);
B = (int)( 0.055648f * X - 0.204043f * Y + 1.057311f * Z * k);
R= min(255,max(0,R));
G= min(255,max(0,G));
B= min(255,max(0,B));
RGBQUAD rgb={(BYTE)B,(BYTE)G,(BYTE)R,0};
return rgb;
}
////////////////////////////////////////////////////////////////////////////////
RGBQUAD CxImage::RGBtoXYZ(RGBQUAD lRGBColor)
{
int X,Y,Z,R,G,B;
R = lRGBColor.rgbRed;
G = lRGBColor.rgbGreen;
B = lRGBColor.rgbBlue;
X = (int)( 0.412453f * R + 0.357580f * G + 0.180423f * B);
Y = (int)( 0.212671f * R + 0.715160f * G + 0.072169f * B);
Z = (int)((0.019334f * R + 0.119193f * G + 0.950227f * B)*0.918483657f);
//X= min(255,max(0,X));
//Y= min(255,max(0,Y));
//Z= min(255,max(0,Z));
RGBQUAD xyz={(BYTE)Z,(BYTE)Y,(BYTE)X,0};
return xyz;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Generates a "rainbow" palette with saturated colors
* \param correction: 1 generates a single hue spectrum. 0.75 is nice for scientific applications.
*/
void CxImage::HuePalette(float correction)
{
if (head.biClrUsed==0) return;
for(DWORD j=0; j 1.0f) blend = 1.0f;
int a0 = (int)(256*blend);
int a1 = 256 - a0;
bool bFullBlend = false;
if (blend > 0.999f) bFullBlend = true;
RGBQUAD color,hsl;
if (head.biClrUsed==0){
long xmin,xmax,ymin,ymax;
if (pSelection){
xmin = info.rSelectionBox.left; xmax = info.rSelectionBox.right;
ymin = info.rSelectionBox.bottom; ymax = info.rSelectionBox.top;
} else {
xmin = ymin = 0;
xmax = head.biWidth; ymax=head.biHeight;
}
for(long y=ymin; y>8);
color.rgbBlue = (BYTE)((hsl.rgbBlue * a0 + color.rgbBlue * a1)>>8);
color.rgbGreen = (BYTE)((hsl.rgbGreen * a0 + color.rgbGreen * a1)>>8);
SetPixelColor(x,y,color);
}
}
}
}
} else {
for(DWORD j=0; j
for (int i=0;i<256;i++) {
cTable[i] = (BYTE)max(0,min(255,(int)((i-128)*c + brightness)));
}
return Lut(cTable);
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return mean lightness of the image. Useful with Threshold() and Light()
*/
float CxImage::Mean()
{
if (!pDib) return 0;
CxImage tmp(*this,true);
if (!tmp.IsValid()) return false;
tmp.GrayScale();
float sum=0;
long xmin,xmax,ymin,ymax;
if (pSelection){
xmin = info.rSelectionBox.left; xmax = info.rSelectionBox.right;
ymin = info.rSelectionBox.bottom; ymax = info.rSelectionBox.top;
} else {
xmin = ymin = 0;
xmax = head.biWidth; ymax=head.biHeight;
}
if (xmin==xmax || ymin==ymax) return (float)0.0;
BYTE *iSrc=tmp.info.pImage;
iSrc += tmp.info.dwEffWidth*ymin; // necessary for selections
for(long y=ymin; y
for(long x=xmin; x 0 && (y+kmax-1) < head.biHeight && x-k2 > 0 && (x+kmax-1) < head.biWidth)
{
b=0;
iCount = 0;
iY2 = ((y-k2)*info.dwEffWidth);
for(long j=-k2;j r) r=c.rgbRed;
if (c.rgbGreen > g) g=c.rgbGreen;
if (c.rgbBlue > b) b=c.rgbBlue;
}
}
c.rgbRed = r;
c.rgbGreen = g;
c.rgbBlue = b;
tmp.SetPixelColor(x,y,c);
}
}
}
Transfer(tmp);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Enhance the variations between adjacent pixels.
* Similar results can be achieved using Filter(),
* but the algorithms are different both in Edge() and in Contour().
* \param Ksize: size of the kernel.
* \return true if everything is ok
*/
bool CxImage::Edge(long Ksize)
{
if (!pDib) return false;
long k2 = Ksize/2;
long kmax= Ksize-k2;
BYTE r,g,b,rr,gg,bb;
RGBQUAD c;
CxImage tmp(*this,pSelection!=0,true,true);
if (!tmp.IsValid()) return false;
long xmin,xmax,ymin,ymax;
if (pSelection){
xmin = info.rSelectionBox.left; xmax = info.rSelectionBox.right;
ymin = info.rSelectionBox.bottom; ymax = info.rSelectionBox.top;
} else {
xmin = ymin = 0;
xmax = head.biWidth; ymax=head.biHeight;
}
for(long y=ymin; y r) r=c.rgbRed;
if (c.rgbGreen > g) g=c.rgbGreen;
if (c.rgbBlue > b) b=c.rgbBlue;
if (c.rgbRed < rr) rr=c.rgbRed;
if (c.rgbGreen < gg) gg=c.rgbGreen;
if (c.rgbBlue < bb) bb=c.rgbBlue;
}
}
c.rgbRed = 255-abs(r-rr);
c.rgbGreen = 255-abs(g-gg);
c.rgbBlue = 255-abs(b-bb);
tmp.SetPixelColor(x,y,c);
}
}
}
Transfer(tmp);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Blends two images
* \param imgsrc2: image to be mixed with this
* \param op: blending method; see ImageOpType
* \param lXOffset, lYOffset: image displacement
* \param bMixAlpha: if true and imgsrc2 has a valid alpha layer, it will be mixed in the destination image.
* \return true if everything is ok
*
* thanks to Mwolski
*/
//
void CxImage::Mix(CxImage & imgsrc2, ImageOpType op, long lXOffset, long lYOffset, bool bMixAlpha)
{
long lWide = min(GetWidth(),imgsrc2.GetWidth()-lXOffset);
long lHeight = min(GetHeight(),imgsrc2.GetHeight()-lYOffset);
bool bEditAlpha = imgsrc2.AlphaIsValid() & bMixAlpha;
if (bEditAlpha && AlphaIsValid()==false){
AlphaCreate();
}
RGBQUAD rgbBackgrnd = GetTransColor();
RGBQUAD rgb1, rgb2, rgbDest;
for(long lY=0;lY>8);
} else {
a=255;
}
if (a==0){ //transparent
rgbDest = rgb1;
} else if (a==255){ //opaque
rgbDest = rgb2;
} else { //blend
a1 = (BYTE)~a;
rgbDest.rgbBlue = (BYTE)((rgb1.rgbBlue*a1+rgb2.rgbBlue*a)>>8);
rgbDest.rgbGreen = (BYTE)((rgb1.rgbGreen*a1+rgb2.rgbGreen*a)>>8);
rgbDest.rgbRed = (BYTE)((rgb1.rgbRed*a1+rgb2.rgbRed*a)>>8);
}
if (bEditAlpha) rgbDest.rgbReserved = (BYTE)(((1+rgb1.rgbReserved)*a)>>8);
}
break;
case OpSrcBlend:
if(memcmp(&rgb1,&rgbBackgrnd,sizeof(RGBQUAD))==0)
rgbDest = rgb2;
else
{
long lBDiff = abs(rgb1.rgbBlue - rgbBackgrnd.rgbBlue);
long lGDiff = abs(rgb1.rgbGreen - rgbBackgrnd.rgbGreen);
long lRDiff = abs(rgb1.rgbRed - rgbBackgrnd.rgbRed);
double lAverage = (lBDiff+lGDiff+lRDiff)/3;
double lThresh = 16;
double dLarge = lAverage/lThresh;
double dSmall = (lThresh-lAverage)/lThresh;
double dSmallAmt = dSmall*((double)rgb2.rgbBlue);
if( lAverage < lThresh+1){
rgbDest.rgbBlue = (BYTE)max(0,min(255,(int)(dLarge*((double)rgb1.rgbBlue) +
dSmallAmt)));
rgbDest.rgbGreen = (BYTE)max(0,min(255,(int)(dLarge*((double)rgb1.rgbGreen) +
dSmallAmt)));
rgbDest.rgbRed = (BYTE)max(0,min(255,(int)(dLarge*((double)rgb1.rgbRed) +
dSmallAmt)));
}
else
rgbDest = rgb1;
}
break;
default:
return;
}
SetPixelColor(lX,lY,rgbDest,bEditAlpha);
}
}
}
}
////////////////////////////////////////////////////////////////////////////////
// thanks to Kenneth Ballard
void CxImage::MixFrom(CxImage & imagesrc2, long lXOffset, long lYOffset)
{
RGBQUAD rgbBackgrnd = imagesrc2.GetTransColor();
RGBQUAD rgb1;
long width = imagesrc2.GetWidth();
long height = imagesrc2.GetHeight();
int x, y;
for(x = 0; x < width; x++)
{
for(y = 0; y < height; y++)
{
rgb1 = imagesrc2.GetPixelColor(x, y);
if(memcmp(&rgb1, &rgbBackgrnd, sizeof(RGBQUAD)) != 0)
SetPixelColor(x + lXOffset, y + lYOffset, rgb1);
}
}
}
////////////////////////////////////////////////////////////////////////////////
/**
* Adjusts separately the red, green, and blue values in the image.
* \param r, g, b: can be from -255 to +255.
* \return true if everything is ok
*/
bool CxImage::ShiftRGB(long r, long g, long b)
{
if (!pDib) return false;
RGBQUAD color;
if (head.biClrUsed==0){
long xmin,xmax,ymin,ymax;
if (pSelection){
xmin = info.rSelectionBox.left; xmax = info.rSelectionBox.right;
ymin = info.rSelectionBox.bottom; ymax = info.rSelectionBox.top;
} else {
xmin = ymin = 0;
xmax = head.biWidth; ymax=head.biHeight;
}
for(long y=ymin; y
for (int i=0;i<256;i++) {
cTable[i] = (BYTE)max(0,min(255,(int)( pow((double)i, dinvgamma) / dMax)));
}
return Lut(cTable);
}
////////////////////////////////////////////////////////////////////////////////
#if CXIMAGE_SUPPORT_WINCE == 0
/**
* Adjusts the intensity of each pixel to the median intensity of its surrounding pixels.
* \param Ksize: size of the kernel.
* \return true if everything is ok
*/
bool CxImage::Median(long Ksize)
{
if (!pDib) return false;
long k2 = Ksize/2;
long kmax= Ksize-k2;
long i,j,k;
RGBQUAD* kernel = (RGBQUAD*)malloc(Ksize*Ksize*sizeof(RGBQUAD));
CxImage tmp(*this,pSelection!=0,true,true);
if (!tmp.IsValid()) return false;
long xmin,xmax,ymin,ymax;
if (pSelection){
xmin = info.rSelectionBox.left; xmax = info.rSelectionBox.right;
ymin = info.rSelectionBox.bottom; ymax = info.rSelectionBox.top;
} else {
xmin = ymin = 0;
xmax = head.biWidth; ymax=head.biHeight;
}
for(long y=ymin; y
for(long x=xmin; xGetWidth();
h=srcReal->GetHeight();
} else {
w=srcImag->GetWidth();
h=srcImag->GetHeight();
}
bool bXpow2 = IsPowerof2(w);
bool bYpow2 = IsPowerof2(h);
//if bForceFFT, width AND height must be powers of 2
if (bForceFFT && !(bXpow2 && bYpow2)) {
long i;
i=0;
while((1< copy the image
if (srcReal && dstReal) tmpReal->Copy(*srcReal,true,false,false);
if (srcImag && dstImag) tmpImag->Copy(*srcImag,true,false,false);
// dst&&src are empty -> create new one, else turn to GrayScale
if (srcReal==0 && dstReal==0){
tmpReal = new CxImage(w,h,8);
tmpReal->Clear(0);
tmpReal->SetGrayPalette();
} else {
if (!tmpReal->IsGrayScale()) tmpReal->GrayScale();
}
if (srcImag==0 && dstImag==0){
tmpImag = new CxImage(w,h,8);
tmpImag->Clear(0);
tmpImag->SetGrayPalette();
} else {
if (!tmpImag->IsGrayScale()) tmpImag->GrayScale();
}
if (!(tmpReal->IsValid() && tmpImag->IsValid())){
if (srcReal==0 && dstReal==0) delete tmpReal;
if (srcImag==0 && dstImag==0) delete tmpImag;
return false;
}
//resample for FFT, if necessary
tmpReal->Resample(w,h,0);
tmpImag->Resample(w,h,0);
//ok, here we have 2 (w x h), grayscale images ready for a FFT
double* real;
double* imag;
long j,k,m;
_complex **grid;
//double mean = tmpReal->Mean();
/* Allocate memory for the grid */
grid = (_complex **)malloc(w * sizeof(_complex));
for (k=0;kGetPixelIndex(k,j)-128;
grid[k][j].y = tmpImag->GetPixelIndex(k,j)-128;
}
}
//DFT buffers
double *real2,*imag2;
real2 = (double*)malloc(max(w,h) * sizeof(double));
imag2 = (double*)malloc(max(w,h) * sizeof(double));
/* Transform the rows */
real = (double *)malloc(w * sizeof(double));
imag = (double *)malloc(w * sizeof(double));
m=0;
while((1<SetPixelIndex(k,j,(BYTE)max(0,min(255,(nn*(3+log(_cabs(grid[k][j])))))));
if (grid[k][j].x==0){
tmpImag->SetPixelIndex(k,j,(BYTE)max(0,min(255,(128+(atan(grid[k][j].y/0.0000000001)*nn)))));
} else {
tmpImag->SetPixelIndex(k,j,(BYTE)max(0,min(255,(128+(atan(grid[k][j].y/grid[k][j].x)*nn)))));
}
} else {
tmpReal->SetPixelIndex(k,j,(BYTE)max(0,min(255,(128 + grid[k][j].x*nn))));
tmpImag->SetPixelIndex(k,j,(BYTE)max(0,min(255,(128 + grid[k][j].y*nn))));
}
}
}
for (k=0;k> 1;
j = 0;
for (i=0;i>= 1;
}
j += k;
}
/* Compute the FFT */
c1 = -1.0;
c2 = 0.0;
l2 = 1;
for (l=0;lGetWidth();
long h = r->GetHeight();
Create(w,h,24);
g->Resample(w,h);
b->Resample(w,h);
if (a) {
a->Resample(w,h);
#if CXIMAGE_SUPPORT_ALPHA
AlphaCreate();
#endif //CXIMAGE_SUPPORT_ALPHA
}
RGBQUAD c;
for (long y=0;y
for (long x=0;xGetPixelIndex(x,y);
c.rgbGreen=g->GetPixelIndex(x,y);
c.rgbBlue=b->GetPixelIndex(x,y);
switch (colorspace){
case 1:
SetPixelColor(x,y,HSLtoRGB(c));
break;
case 2:
SetPixelColor(x,y,YUVtoRGB(c));
break;
case 3:
SetPixelColor(x,y,YIQtoRGB(c));
break;
case 4:
SetPixelColor(x,y,XYZtoRGB(c));
break;
default:
SetPixelColor(x,y,c);
}
#if CXIMAGE_SUPPORT_ALPHA
if (a) AlphaSet(x,y,a->GetPixelIndex(x,y));
#endif //CXIMAGE_SUPPORT_ALPHA
}
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Smart blurring to remove small defects, dithering or artifacts.
* \param radius: normally between 0.01 and 0.5
* \param niterations: should be trimmed with radius, to avoid blurring should be (radius*niterations)<1
* \param colorspace: 0 = RGB, 1 = HSL, 2 = YUV, 3 = YIQ, 4 = XYZ
* \return true if everything is ok
*/
bool CxImage::Repair(float radius, long niterations, long colorspace)
{
if (!IsValid()) return false;
long w = GetWidth();
long h = GetHeight();
CxImage r,g,b;
r.Create(w,h,8);
g.Create(w,h,8);
b.Create(w,h,8);
switch (colorspace){
case 1:
SplitHSL(&r,&g,&b);
break;
case 2:
SplitYUV(&r,&g,&b);
break;
case 3:
SplitYIQ(&r,&g,&b);
break;
case 4:
SplitXYZ(&r,&g,&b);
break;
default:
SplitRGB(&r,&g,&b);
}
for (int i=0; iGetWidth()-1;
long h = ch->GetHeight()-1;
double correction,ix,iy,ixx,ixy,iyy,den,num;
int x,y,xy0,xp1,xm1,yp1,ym1;
for(x=1; xGetPixelIndex(x,y);
xm1 = ch->GetPixelIndex(x-1,y);
xp1 = ch->GetPixelIndex(x+1,y);
ym1 = ch->GetPixelIndex(x,y-1);
yp1 = ch->GetPixelIndex(x,y+1);
ix= (xp1-xm1)/2.0;
iy= (yp1-ym1)/2.0;
ixx= xp1 - 2.0 * xy0 + xm1;
iyy= yp1 - 2.0 * xy0 + ym1;
ixy=(ch->GetPixelIndex(x+1,y+1)+ch->GetPixelIndex(x-1,y-1)-
ch->GetPixelIndex(x-1,y+1)-ch->GetPixelIndex(x+1,y-1))/4.0;
num= (1.0+iy*iy)*ixx - ix*iy*ixy + (1.0+ix*ix)*iyy;
den= 1.0+ix*ix+iy*iy;
correction = num/den;
tmp.SetPixelIndex(x,y,(BYTE)min(255,max(0,(xy0 + radius * correction))));
}
}
for (x=0;x<=w;x++){
tmp.SetPixelIndex(x,0,ch->GetPixelIndex(x,0));
tmp.SetPixelIndex(x,h,ch->GetPixelIndex(x,h));
}
for (y=0;y<=h;y++){
tmp.SetPixelIndex(0,y,ch->GetPixelIndex(0,y));
tmp.SetPixelIndex(w,y,ch->GetPixelIndex(w,y));
}
ch->Transfer(tmp);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Enhance the variations between adjacent pixels.
* Similar results can be achieved using Filter(),
* but the algorithms are different both in Edge() and in Contour().
* \return true if everything is ok
*/
bool CxImage::Contour()
{
if (!pDib) return false;
long Ksize = 3;
long k2 = Ksize/2;
long kmax= Ksize-k2;
long i,j,k;
BYTE maxr,maxg,maxb;
RGBQUAD pix1,pix2;
CxImage tmp(*this,pSelection!=0,true,true);
if (!tmp.IsValid()) return false;
long xmin,xmax,ymin,ymax;
if (pSelection){
xmin = info.rSelectionBox.left; xmax = info.rSelectionBox.right;
ymin = info.rSelectionBox.bottom; ymax = info.rSelectionBox.top;
} else {
xmin = ymin = 0;
xmax = head.biWidth; ymax=head.biHeight;
}
for(long y=ymin; ymaxb) maxb = pix2.rgbBlue;
if ((pix2.rgbGreen-pix1.rgbGreen)>maxg) maxg = pix2.rgbGreen;
if ((pix2.rgbRed-pix1.rgbRed)>maxr) maxr = pix2.rgbRed;
}
}
pix1.rgbBlue=(BYTE)(255-maxb);
pix1.rgbGreen=(BYTE)(255-maxg);
pix1.rgbRed=(BYTE)(255-maxr);
tmp.SetPixelColor(x,y,pix1);
}
}
}
Transfer(tmp);
return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Adds a random offset to each pixel in the image
* \param radius: maximum pixel displacement
* \return true if everything is ok
*/
bool CxImage::Jitter(long radius)
{
if (!pDib) return false;
long nx,ny;
CxImage tmp(*this,pSelection!=0,true,true);
if (!tmp.IsValid()) return false;
long xmin,xmax,ymin,ymax;
if (pSelection){
xmin = info.rSelectionBox.left; xmax = info.rSelectionBox.right;
ymin = info.rSelectionBox.bottom; ymax = info.rSelectionBox.top;
} else {
xmin = ymin = 0;
xmax = head.biWidth; ymax=head.biHeight;
}
for(long y=ymin; y y)
{
for (row = 0; row < y ; row++)
{
scale=0;
/* find the scale factor */
for (j = 0; j < y ; j++)
{
/* if the index is in bounds, add it to the scale counter */
if ((j + cmatrix_length/2 - row >= 0) &&
(j + cmatrix_length/2 - row < cmatrix_length))
scale += cmatrix[j + cmatrix_length/2 - row];
}
for (i = 0; i= row - cmatrix_length/2) &&
(j <= row + cmatrix_length/2))
sum += cur_col[j*bytes + i] * cmatrix[j];
}
dest_col[row*bytes + i] = (BYTE)(0.5f + sum / scale);
}
}
}
else
{
/* for the edge condition, we only use available info and scale to one */
for (row = 0; row < cmatrix_middle; row++)
{
/* find scale factor */
scale=0;
for (j = cmatrix_middle - row; j0; j--)
{
sum += *(ctable_p + *cur_col_p1);
cur_col_p1 += bytes;
ctable_p += 256;
}
cur_col_p++;
*(dest_col_p++) = (BYTE)(0.5f + sum);
}
}
/* for the edge condition , we only use available info, and scale to one */
for (; row < y; row++)
{
/* find scale factor */
scale=0;
for (j = 0; j< y-row + cmatrix_middle; j++)
scale += cmatrix[j];
for (i = 0; i 255) dest_row[u*3+v] = 255;
else dest_row[u*3+v] = value;
}
}
}
Transfer(tmp);
return TRUE;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Apply a look up table to the image.
* \param pLut: BYTE[256] look up table
* \return true if everything is ok
*/
bool CxImage::Lut(BYTE* pLut)
{
if (!pDib || !pLut) return false;
RGBQUAD color;
double dbScaler;
if (head.biClrUsed==0){
long xmin,xmax,ymin,ymax;
if (pSelection){
xmin = info.rSelectionBox.left; xmax = info.rSelectionBox.right;
ymin = info.rSelectionBox.bottom; ymax = info.rSelectionBox.top;
} else {
// faster loop for full image
BYTE *iSrc=info.pImage;
for(unsigned long i=0; i < head.biSizeImage ; i++){
*iSrc++ = pLut[*iSrc];
}
return true;
}
dbScaler = 100.0/ymax;
for(long y=ymin; y
for(long x=xmin; x
if (!pDib) return false;
FloodFill2(x,y,GetPixelColor(x,y),FillColor);
return true;
}
////////////////////////////////////////////////////////////////////////////////
void CxImage::FloodFill2(int x, int y, RGBQUAD old_color, RGBQUAD new_color)
{
// Fill in the actual pixels.
// Function steps recursively until it finds borders (color that is not old_color)
if (!IsInside(x,y)) return;
RGBQUAD r = GetPixelColor(x,y);
COLORREF cr = RGB(r.rgbRed,r.rgbGreen,r.rgbBlue);
if(cr == RGB(old_color.rgbRed,old_color.rgbGreen,old_color.rgbBlue)
&& cr != RGB(new_color.rgbRed,new_color.rgbGreen,new_color.rgbBlue) ) {
// the above if statement, after && is there to prevent
// stack overflows. The program will continue to find
// colors if you flood-fill an entire region (entire picture)
SetPixelColor(x,y,new_color);
FloodFill2((x+1),y,old_color,new_color);
FloodFill2((x-1),y,old_color,new_color);
FloodFill2(x,(y+1),old_color,new_color);
FloodFill2(x,(y-1),old_color,new_color);
}
}*/
///////////////////////////////////////////////////////////////////////////////
#endif //CXIMAGE_SUPPORT_DSP