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|
//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include "Unit1.h"
//*********************************
#include "stdio.h"
#include "stdafx.h"
#include "image.h"
#include "fvstypes.h"
#include "config.h"
#include "file.h"
#include "string.h"
#include "floatfield.h"
#include "img_base.h"
#include "imagemanip.h"
//*******************************************************
#define P(x,y) p[((x)+(y)*pitch)]
//****************************************************
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
#include "fmt_auto.cpp"
#include "fmt_jpeg.cpp"
#include "fmt_bitmap.h"
//------------------------------------------------------------------------------
// Déclaration des variables
//------------------------------------------------------------------------------
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
}
//***************************************
void __fastcall TForm1::Button1Click(TObject *Sender)
{
try{
if(OpenPictureDialog1->Execute())
{
bitmap1->LoadFromFile(OpenPictureDialog1->FileName);
Image1->Canvas->StretchDraw(Rect1, bitmap1);
}
}
catch(...)
{
ShowMessage( "Impossible d'ouvrir l'image");
}
Image1->Visible=true;
Form1->Panel1->Visible=true;
Form1->Label1->Visible=true;
// Form1->Button2->Enabled=true;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormCreate(TObject *Sender)
{
bitmap1=new Graphics::TBitmap;
bitmap2=new Graphics::TBitmap;
bitmap1->Width=TIM;
bitmap1->Height=TIM;
bitmap2->Width=TIM;
bitmap2->Height=TIM;
Rect1=Rect(0,0,Image1->Width,Image1->Height);
Rect2=Rect(0,0,Image2->Width,Image2->Height);
Image1->Visible=false;
FvsImage_t image;
Panel1->Visible=true;
Label1->Visible=true;
Panel2->Visible=true;
Label2->Visible=true;
Form1->Button1->Enabled=true;
//Form1->Button2->Enabled=false;
}
//---------------------------------------------------------------------------
//********************* fonction pr image**************
typedef struct iFvsImage_t
{
FvsByte_t *pimg; /* 8 bit image array */
FvsInt_t w; /* width of image */
FvsInt_t h; /* height of image */
FvsInt_t pitch; /* pitch */
FvsImageFlag_t flags; /* flags */
} iFvsImage_t;
FvsImage_t ImageCreate()
{
iFvsImage_t* p = NULL;
p = ( iFvsImage_t* ) (FvsImage_t)malloc(sizeof(iFvsImage_t));
if (p!=NULL)
{
p->h = 0;
p->w = 0;
p->pitch = 0;
p->pimg = NULL;
p->flags = FvsImageGray; /* default flag */
}
return (FvsImage_t)p;
}
void ImageDestroy(FvsImage_t image)
{
iFvsImage_t* p = NULL;
if (image==NULL)
return;
(void)ImageSetSize(image, 0, 0);
p = ( iFvsImage_t* )image;
free(p);
}
FvsError_t ImageSetFlag(FvsImage_t img, const FvsImageFlag_t flag)
{
iFvsImage_t* image = (iFvsImage_t*)img;
image->flags = flag;
return FvsOK;
}
FvsImageFlag_t ImageGetFlag(const FvsImage_t img)
{
iFvsImage_t* image = (iFvsImage_t*)img;
return image->flags;
}
FvsError_t ImageSetSize(FvsImage_t img, const FvsInt_t width, FvsInt_t height)
{
iFvsImage_t* image = (iFvsImage_t*)img;
FvsError_t nRet = FvsOK;
FvsInt_t newsize = width*height;
/* special case for zero size */
if (newsize==0)
{
if (image->pimg!=NULL)
{
free(image->pimg);
image->pimg = NULL;
image->w = 0;
image->h = 0;
image->pitch = 0;
}
return FvsOK;
}
if (image->h*image->w != newsize)
{
free(image->pimg);
image->w = 0;
image->h = 0;
image->pitch = 0;
/* This allocates the amount of memory need for the image structure */
image->pimg = (uint8_t*)malloc((size_t)newsize);
}
if (image->pimg == NULL)
nRet = FvsMemory;
else
{
image->h = height;
image->w = width;
image->pitch = width;
}
return nRet;
}
FvsError_t ImageCopy(FvsImage_t destination, const FvsImage_t source)
{
iFvsImage_t* dest = (iFvsImage_t*)destination;
iFvsImage_t* src = (iFvsImage_t*)source;
FvsError_t nRet = FvsOK;
nRet = ImageSetSize(dest, src->w, src->h);
if (nRet==FvsOK)
memcpy(dest->pimg, src->pimg, (size_t)src->h*src->w);
/* copy the flag */
dest->flags = src->flags;
return nRet;
}
FvsError_t ImageClear(FvsImage_t img)
{
return ImageFlood(img, 0);
}
FvsError_t ImageFlood(FvsImage_t img, const FvsByte_t value)
{
FvsError_t nRet = FvsOK;
iFvsImage_t* image = (iFvsImage_t*)img;
if (image==NULL) return FvsMemory;
if (image->pimg!=NULL)
memset(image->pimg, (int)value, (size_t)(image->h*image->w));
return nRet;
}
/* set a pixel value in the picture */
void ImageSetPixel(FvsImage_t img, const FvsInt_t x, const FvsInt_t y, const FvsByte_t val)
{
iFvsImage_t* image = (iFvsImage_t*)img;
int address = y * image->w + x;
image->pimg[address] = val;
}
/* This function returns the pixel for the x and y value */
FvsByte_t ImageGetPixel(const FvsImage_t img, const FvsInt_t x, const FvsInt_t y)
{
iFvsImage_t* image = (iFvsImage_t*)img;
/* position in array */
int address = y * image->pitch + x;
return image->pimg[address];
}
/* returns a pointer to the image buffer */
FvsByte_t* ImageGetBuffer(FvsImage_t img)
{
iFvsImage_t* image = (iFvsImage_t*)img;
if (image==NULL) return NULL;
return image->pimg;
}
/* retrieve width and height */
FvsInt_t ImageGetWidth(const FvsImage_t img)
{
iFvsImage_t* image = (iFvsImage_t*)img;
if (image==NULL) return -1;
return image->w;
}
FvsInt_t ImageGetHeight(const FvsImage_t img)
{
iFvsImage_t* image = (iFvsImage_t*)img;
if (image==NULL) return -1;
return image->h;
}
FvsInt_t ImageGetSize(const FvsImage_t img)
{
iFvsImage_t* image = (iFvsImage_t*)img;
if (image==NULL) return 0;
return image->h * image->w;
}
/* get the pitch pixel(x,y) pos is at x + y * pitch */
FvsInt_t ImageGetPitch(const FvsImage_t img)
{
iFvsImage_t* image = (iFvsImage_t*)img;
if (image==NULL) return -1;
return image->pitch;
}
FvsBool_t ImageCompareSize(const FvsImage_t image1, const FvsImage_t image2)
{
if (ImageGetWidth(image1)!=ImageGetWidth(image2))
return FvsFalse;
if (ImageGetHeight(image1)!=ImageGetHeight(image2))
return FvsFalse;
return FvsTrue;
}
//***********************************image irode******//
FvsError_t ImageDilate(FvsImage_t image)
{
FvsInt_t w = ImageGetWidth (image);
FvsInt_t h = ImageGetHeight(image);
FvsInt_t pitch = ImageGetPitch (image);
FvsInt_t size = ImageGetSize (image);
FvsByte_t* p = ImageGetBuffer(image);
FvsInt_t x,y;
if (p==NULL)
return FvsMemory;
for (y=1; y<h-1; y++)
for (x=1; x<w-1; x++)
{
if (P(x,y)==0xFF)
{
P(x-1, y) |= 0x80;
P(x+1, y) |= 0x80;
P(x, y-1) |= 0x80;
P(x, y+1) |= 0x80;
}
}
for (y=0; y<size; y++)
if (p[y])
p[y] = 0xFF;
return FvsOK;
}
//************************* fin imge dilate***********///
//*******************************image eroder**********//
FvsError_t ImageErode(FvsImage_t image)
{
FvsInt_t w = ImageGetWidth (image);
FvsInt_t h = ImageGetHeight(image);
FvsInt_t pitch = ImageGetPitch (image);
FvsInt_t size = ImageGetSize (image);
FvsByte_t* p = ImageGetBuffer(image);
FvsInt_t x,y;
if (p==NULL)
return FvsMemory;
for (y=1; y<h-1; y++)
for (x=1; x<w-1; x++)
{
if (P(x,y)==0x0)
{
P(x-1, y) &= 0x80;
P(x+1, y) &= 0x80;
P(x, y-1) &= 0x80;
P(x, y+1) &= 0x80;
}
}
for (y=0; y<size; y++)
if (p[y]!=0xFF)
p[y] = 0x0;
return FvsOK;
}
//*********************fin eroder*****************
//**************************************
//**********************file **************************
typedef struct iFvsFile_t
{
FILE *pf; /* file pointer */
} iFvsFile_t;
FvsFile_t FileCreate()
{
iFvsFile_t* p = NULL;
p = (iFvsFile_t*)malloc(sizeof(iFvsFile_t));
if (p!=NULL)
p->pf = NULL;
return (FvsFile_t)p;
}
void FileDestroy(FvsFile_t file)
{
iFvsFile_t* p = NULL;
if (file==NULL)
return;
/* close file if it was still open */
(void)FileClose(file);
p = (iFvsFile_t* )file;
free(p);
}
FvsBool_t FileIsOpen(const FvsFile_t file)
{
iFvsFile_t* p = (iFvsFile_t*)file;
return (p->pf!=NULL)?FvsTrue:FvsFalse;
}
FvsError_t FileOpen(FvsFile_t file, const FvsString_t name, const FvsFileOptions_t flags)
{
iFvsFile_t* p = (iFvsFile_t*)file;
char strFlags[10];
int nflags = (int)flags;
/* close eventually already open file */
(void)FileClose(p);
strcpy(strFlags, "");
if ( (nflags & FvsFileRead)!=0 &&
(nflags & FvsFileWrite)!=0 )
strcat(strFlags, "rw");
else
{
if ((nflags & FvsFileRead)!=0)
strcat(strFlags, "r");
if ((nflags & FvsFileWrite)!=0)
strcat(strFlags, "w");
}
strcat(strFlags, "b");
if ((nflags & FvsFileCreate)!=0)
strcat(strFlags, "+");
p->pf = fopen(name, strFlags);
if (FileIsOpen(file)==FvsTrue)
return FvsOK;
ShowMessage("hello");
return FvsFailure;
}
FvsError_t FileClose(FvsFile_t file)
{
iFvsFile_t* p = (iFvsFile_t*)file;
int nerr = -1;
if (p->pf!=NULL)
{
nerr = fclose(p->pf);
p->pf = NULL;
}
if (nerr==0)
return FvsOK;
return FvsFailure;
}
FvsBool_t FileIsAtEOF(const FvsFile_t file)
{
iFvsFile_t* p = (iFvsFile_t*)file;
if (FileIsOpen(p)==FvsFalse)
return FvsFalse;
return (feof(p->pf)!=0)?FvsTrue:FvsFalse;
}
FvsError_t FileCommit(FvsFile_t file)
{
iFvsFile_t* p = (iFvsFile_t*)file;
return (fflush(p->pf)==0)?FvsOK:FvsFailure;
}
FvsError_t FileSeekToBegin(FvsFile_t file)
{
iFvsFile_t* p = (iFvsFile_t*)file;
if (FileIsOpen(p)==FvsTrue)
{
if (fseek(p->pf, 0, SEEK_SET)!=0)
return FvsFailure;
return FvsOK;
}
return FvsFailure;
}
FvsError_t FileSeekToEnd(FvsFile_t file)
{
iFvsFile_t* p = (iFvsFile_t*)file;
if (FileIsOpen(p)==FvsTrue)
{
if (fseek(p->pf, 0, SEEK_END)!=0)
return FvsFailure;
return FvsOK;
}
return FvsFailure;
}
FvsUint_t FileGetPosition(FvsFile_t file)
{
iFvsFile_t* p = (iFvsFile_t*)file;
if (FileIsOpen(p)==FvsTrue)
return (FvsUint_t)ftell(p->pf);
return 0;
}
FvsError_t FileSeek(FvsFile_t file, const FvsUint_t position)
{
iFvsFile_t* p = (iFvsFile_t*)file;
if (FileIsOpen(p)==FvsTrue)
{
if (fseek(p->pf, (long int)position, SEEK_SET)!=0)
return FvsFailure;
return FvsOK;
}
return FvsFailure;
}
FvsUint_t FileRead(FvsFile_t file, FvsPointer_t data, const FvsUint_t length)
{
iFvsFile_t* p = (iFvsFile_t*)file;
return (FvsUint_t)fread(data, (size_t)1, (size_t)length, p->pf);
}
FvsUint_t FileWrite(FvsFile_t file, const FvsPointer_t data, const FvsUint_t length)
{
iFvsFile_t* p = (iFvsFile_t*)file;
return (FvsUint_t)fwrite(data, (size_t)1, (size_t)length, p->pf);
}
FvsByte_t FileGetByte(FvsFile_t file)
{
iFvsFile_t* p = (iFvsFile_t*)file;
return (FvsByte_t)fgetc(p->pf);
}
FvsWord_t FileGetWord(FvsFile_t file)
{
iFvsFile_t* p = (iFvsFile_t*)file;
FvsWord_t w = (FvsWord_t)fgetc(p->pf);
return (w<<8)+fgetc(p->pf);
}
TCHAR BitmapFilename[256];
TCHAR outputFilename[256];
//***************end file *********************
void __fastcall TForm1::Button3Click(TObject *Sender)
{
Close();
}
//---------------------------------------------------------------------------
//*********************************************
typedef struct iFvsHistogram_t
{
FvsUint_t ptable[256]; /* 8 bit image histogram */
FvsInt_t ncount; /* number of points in the histogram */
FvsInt_t nmean; /* -1 = not computed yet */
FvsInt_t nvariance; /* -1 = not computed yet */
} iFvsHistogram_t;
FvsHistogram_t HistogramCreate()
{
iFvsHistogram_t* p = NULL;
p = (iFvsHistogram_t*) (FvsHistogram_t)malloc(sizeof(iFvsHistogram_t));
if (p!=NULL)
{
/* reset the table */
HistogramReset(p);
}
return (FvsHistogram_t)p;
}
void HistogramDestroy(FvsHistogram_t histogram)
{
iFvsHistogram_t* p = NULL;
if (histogram==NULL)
return;
p = (iFvsHistogram_t*) histogram;
free(p);
}
FvsError_t HistogramReset(FvsHistogram_t hist)
{
iFvsHistogram_t* histogram = (iFvsHistogram_t*)hist;
int i;
for (i = 0; i < 256; i++)
histogram->ptable[i] = 0;
histogram->ncount = 0;
histogram->nmean = -1;
histogram->nvariance = -1;
return FvsOK;
}
FvsError_t HistogramCompute(FvsHistogram_t hist, const FvsImage_t image)
{
iFvsHistogram_t* histogram = (iFvsHistogram_t*)hist;
FvsError_t nRet = FvsOK;
FvsInt_t w = ImageGetWidth(image);
FvsInt_t h = ImageGetHeight(image);
FvsInt_t pitch = ImageGetPitch(image);
uint8_t* p = ImageGetBuffer(image);
FvsInt_t x, y;
if (histogram==NULL || p==NULL)
return FvsMemory;
/* reset the histogram first */
nRet = HistogramReset(hist);
/* now compute the histogram */
if (nRet==FvsOK)
{
FvsInt_t pos;
for (y=0; y<h; y++)
{
pos = pitch*y;
for (x=0; x<w; x++)
{
histogram->ptable[p[pos++]]++;
}
}
histogram->ncount = w*h;
}
return nRet;
}
/* Get the mean of an histogram */
FvsByte_t HistogramGetMean(const FvsHistogram_t hist)
{
iFvsHistogram_t* histogram = (iFvsHistogram_t*)hist;
FvsInt_t val, i;
ShowMessage("hi");
val = histogram->nmean;
if (val==-1)
{
val = 0;
for (i = 1; i < 255; i++)
val += i*histogram->ptable[i];
i = histogram->ncount;
if (i>0)
val = val/i;
else
val = 0;
histogram->nmean = val;
}
return (uint8_t)val;
}
/* Get the variance of an histogram */
FvsUint_t HistogramGetVariance(const FvsHistogram_t hist)
{
iFvsHistogram_t* histogram = (iFvsHistogram_t*)hist;
FvsInt_t val;
FvsInt_t i;
uint8_t mean;
val = histogram->nvariance;
if (val==-1)
{
/* we need the mean value */
mean = HistogramGetMean(hist);
val = 0;
for (i = 0; i < 255; i++)
val += histogram->ptable[i]*(i - mean)*(i - mean);
i = histogram->ncount;
if (i>0)
val = val/i;
else
val = 0;
histogram->nvariance = val;
}
return (FvsUint_t)val;
}
//*****************************************
//**NORMALISATION**************//
//*************************************
FvsError_t ImageNormalize(FvsImage_t image, const FvsByte_t mean, const FvsUint_t variance)
{
FvsByte_t* p = ImageGetBuffer(image);
FvsInt_t w = ImageGetWidth (image);
FvsInt_t h = ImageGetHeight(image);
FvsInt_t pitch = ImageGetPitch (image);
FvsInt_t x,y;
FvsFloat_t fmean, fsigma, fmean0, fsigma0, fgray;
FvsFloat_t fcoeff = 0.0;
FvsHistogram_t histogram = NULL;
FvsError_t nRet;
if (p==NULL)
return FvsMemory;
histogram = HistogramCreate();
if (histogram!=NULL)
{
ShowMessage("allo");
/* compute histogram */
nRet = HistogramCompute(histogram, image);
if (nRet==FvsOK)
{
/* first compute sigma and mean */
fmean = (FvsFloat_t)HistogramGetMean(histogram);
fsigma = sqrt((FvsFloat_t)HistogramGetVariance(histogram));
fmean0 = (FvsFloat_t)mean;
fsigma0 = sqrt((FvsFloat_t)variance);
if (fsigma>0.0)
fcoeff = fsigma0/fsigma;
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
{
fgray = (FvsFloat_t)P(x,y);
fgray = fmean0 + fcoeff*(fgray - mean);
if (fgray < 0.0) fgray = 0.0;
if (fgray > 255.0) fgray = 255.0;
P(x,y)= (uint8_t)fgray;
}
}
HistogramDestroy(histogram);
}
return nRet;
}
//**********************END NORMALISATION*************
//---------------------------------------------------------------------------
//*************************low passs filter **///////////
static FvsError_t FingerprintDirectionLowPass(FvsFloat_t* theta, FvsFloat_t* out,
FvsInt_t nFilterSize, FvsInt_t w, FvsInt_t h)
{
FvsError_t nRet = FvsOK;
FvsFloat_t* filter = NULL;
FvsFloat_t* phix = NULL;
FvsFloat_t* phiy = NULL;
FvsFloat_t* phi2x = NULL;
FvsFloat_t* phi2y = NULL;
FvsInt_t fsize = nFilterSize*2+1;
size_t nbytes = (size_t)(w*h*sizeof(FvsFloat_t));
FvsFloat_t nx, ny;
FvsInt_t val;
FvsInt_t i, j, x, y;
filter= (FvsFloat_t*)malloc((size_t)fsize*fsize*sizeof(FvsFloat_t));
phix = (FvsFloat_t*)malloc(nbytes);
phiy = (FvsFloat_t*)malloc(nbytes);
phi2x = (FvsFloat_t*)malloc(nbytes);
phi2y = (FvsFloat_t*)malloc(nbytes);
if (filter==NULL || phi2x==NULL || phi2y==NULL || phix==NULL || phiy==NULL)
nRet = FvsMemory;
else
{
/* reset all fields to 0 */
memset(filter, 0, (size_t)fsize*fsize*sizeof(FvsFloat_t));
memset(phix, 0, nbytes);
memset(phiy, 0, nbytes);
memset(phi2x, 0, nbytes);
memset(phi2y, 0, nbytes);
/* 4 - Compute a continuous field from theta */
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
{
val = x+y*w;
phix[val] = cos(theta[val]);
phiy[val] = sin(theta[val]);
}
/* build the low-pass filter */
nx = 0.0;
for (j = 0; j < fsize; j++)
for (i = 0; i < fsize; i++)
{
filter[j*fsize+i] = (FvsFloat_t)(fsize - (abs(nFilterSize-i)+abs(nFilterSize-j)));
nx += filter[j*fsize+i]; /* sum of coefficients */
}
if (nx>1.0)
{
for (j = 0; j < fsize; j++)
for (i = 0; i < fsize; i++)
/* normalize the result */
filter[j*fsize+i] /= nx;
}
/* low-pass on the result arrays getting phi2 */
for (y = 0; y < h-fsize; y++)
for (x = 0; x < w-fsize; x++)
{
nx = 0.0;
ny = 0.0;
for (j = 0; j < fsize; j++)
for (i = 0; i < fsize; i++)
{
val = (x+i)+(j+y)*w;
nx += filter[j*fsize+i]*phix[val];
ny += filter[j*fsize+i]*phiy[val];
}
val = x+y*w;
phi2x[val] = nx;
phi2y[val] = ny;
}
/* we do not need phix, phiy anymore, delete them */
if (phix!=NULL) { free(phix); phix=NULL; }
if (phiy!=NULL) { free(phiy); phiy=NULL; }
/* 5 - local ridge orientation -> theta */
for (y = 0; y < h-fsize; y++)
for (x = 0; x < w-fsize; x++)
{
val = x+y*w;
out[val] = atan2(phi2y[val], phi2x[val])*0.5;
}
}
if (phix!=NULL) free(phix);
if (phiy!=NULL) free(phiy);
if (phi2x!=NULL) free(phi2x);
if (phi2y!=NULL) free(phi2y);
if (filter!=NULL)free(filter);
return nRet;
}
//*********************end low pass**************////
//*****************************************************
//**********************FLOAT**************///////////
/*########################################################################
########################################################################*/
/*!
A fingerprint floating point field structure.
*/
typedef struct iFvsFloatField_t
{
FvsFloat_t *pimg; /* floating point field array */
FvsInt_t w; /* width of field */
FvsInt_t h; /* height of field */
FvsInt_t pitch; /* pitch */
} iFvsFloatField_t;
FvsFloatField_t FloatFieldCreate()
{
iFvsFloatField_t* p = NULL;
p = ( iFvsFloatField_t* ) (FvsFloatField_t)malloc(sizeof(iFvsFloatField_t));
if (p!=NULL)
{
p->h = 0;
p->w = 0;
p->pitch = 0;
p->pimg = NULL;
}
return (FvsFloatField_t)p;
}
void FloatFieldDestroy(FvsFloatField_t field)
{
iFvsFloatField_t* p = NULL;
if (field==NULL)
return;
p = ( iFvsFloatField_t* )field;
(void)FloatFieldSetSize(field, 0, 0);
free(p);
}
FvsError_t FloatFieldSetSize(FvsFloatField_t img, const FvsInt_t width, const FvsInt_t height)
{
iFvsFloatField_t* field = (iFvsFloatField_t*)img;
FvsError_t nRet = FvsOK;
FvsInt_t newsize = (FvsInt_t)(width*height*sizeof(FvsFloat_t));
/* special case for zero size */
if (newsize==0)
{
if (field->pimg!=NULL)
{
free(field->pimg);
field->pimg = NULL;
field->w = 0;
field->h = 0;
field->pitch = 0;
}
return FvsOK;
}
if ((FvsInt_t)(field->h*field->w*sizeof(FvsFloat_t)) != newsize)
{
free(field->pimg);
field->w = 0;
field->h = 0;
field->pitch = 0;
/* This allocates the amount of memory need for the field structure */
field->pimg = (FvsFloat_t*)malloc((size_t)newsize);
}
if (field->pimg == NULL)
nRet = FvsMemory;
else
{
field->h = height;
field->w = width;
field->pitch = width;
}
return nRet;
}
FvsError_t FloatFieldCopy(FvsFloatField_t destination, const FvsFloatField_t source)
{
iFvsFloatField_t* dest = (iFvsFloatField_t*)destination;
iFvsFloatField_t* src = (iFvsFloatField_t*)source;
FvsError_t nRet = FvsOK;
nRet = FloatFieldSetSize(dest, src->w, src->h);
if (nRet==FvsOK)
memcpy(dest->pimg, src->pimg, src->h*src->w*sizeof(FvsFloat_t));
return nRet;
}
FvsError_t FloatFieldClear(FvsFloatField_t img)
{
return FloatFieldFlood(img, 0.0);
}
FvsError_t FloatFieldFlood(FvsFloatField_t img, const FvsFloat_t value)
{
iFvsFloatField_t* field = (iFvsFloatField_t*)img;
FvsError_t nRet = FvsOK;
FvsInt_t i;
if (field->pimg!=NULL)
{
for (i=0; i<field->h*field->w; i++)
field->pimg[i] = value;
}
return nRet;
}
/* set a pixel value in the picture */
void FloatFieldSetValue(FvsFloatField_t img, const FvsInt_t x, const FvsInt_t y, const FvsFloat_t val)
{
iFvsFloatField_t* field = (iFvsFloatField_t*)img;
int address = y * field->w + x;
field->pimg[address] = val;
}
/* This function returns the pixel for the x and y value */
FvsFloat_t FloatFieldGetValue(FvsFloatField_t img, const FvsInt_t x, const FvsInt_t y)
{
iFvsFloatField_t* field = (iFvsFloatField_t*)img;
/* position in array */
int address = y * field->pitch + x;
return field->pimg[address];
}
/* returns a pointer to the field buffer */
FvsFloat_t* FloatFieldGetBuffer(FvsFloatField_t img)
{
iFvsFloatField_t* field = (iFvsFloatField_t*)img;
return field->pimg;
}
/* retrieve width and height */
FvsInt_t FloatFieldGetWidth(const FvsFloatField_t img)
{
iFvsFloatField_t* field = (iFvsFloatField_t*)img;
return field->w;
}
FvsInt_t FloatFieldGetHeight(const FvsFloatField_t img)
{
iFvsFloatField_t* field = (iFvsFloatField_t*)img;
return field->h;
}
/* get the pitch pixel(x,y) pos is at x + y * pitch */
FvsInt_t FloatFieldGetPitch(const FvsFloatField_t img)
{
iFvsFloatField_t* field = (iFvsFloatField_t*)img;
return field->pitch;
}
//*********************
//*********ORIENTATION************////////
//****************************************************
FvsError_t FingerprintGetDirection(const FvsImage_t image, FvsFloatField_t field,
const FvsInt_t nBlockSize, const FvsInt_t nFilterSize)
{
/* width & height of the input image */
FvsInt_t w = ImageGetWidth (image);
FvsInt_t h = ImageGetHeight(image);
FvsInt_t pitch = ImageGetPitch (image);
FvsByte_t* p = ImageGetBuffer(image);
FvsInt_t i, j, u, v, x, y;
const temp = nBlockSize*2+1;
FvsInt_t dx[100][100];// = new FvsInt_t[(nBlockSize*2+1)][(nBlockSize*2+1)];
FvsInt_t dy[100][100];// = new FvsInt_t[(nBlockSize*2+1)][(nBlockSize*2+1)];
FvsFloat_t nx, ny;
FvsFloat_t* out;
FvsFloat_t* theta = NULL;
FvsError_t nRet = FvsOK;
/* (re-)allocate the output image */
nRet = FloatFieldSetSize(field, w, h);
if (nRet!=FvsOK) return nRet;
nRet = FloatFieldClear(field);
if (nRet!=FvsOK) return nRet;
out = FloatFieldGetBuffer(field);
/* allocate memory for the orientation values */
if (nFilterSize>0)
{
theta = (FvsFloat_t*)malloc(w * h * sizeof(FvsFloat_t));
if (theta!=NULL)
memset(theta, 0, (w * h * sizeof(FvsFloat_t)));
}
/* detect any allocation error */
if (out==NULL || (nFilterSize>0 && theta==NULL))
nRet = FvsMemory;
else
{
/* 1 - divide the image in blocks */
for (y = nBlockSize+1; y < h-nBlockSize-1; y++)
for (x = nBlockSize+1; x < w-nBlockSize-1; x++)
{
/* 2 - for the block centered at x,y compute the gradient */
for (j = 0; j < (temp); j++)
for (i = 0; i < (temp); i++)
{
dx[i][j] = (FvsInt_t)
(P(x+i-nBlockSize, y+j-nBlockSize) -
P(x+i-nBlockSize-1, y+j-nBlockSize));
dy[i][j] = (FvsInt_t)
(P(x+i-nBlockSize, y+j-nBlockSize) -
P(x+i-nBlockSize, y+j-nBlockSize-1));
}
/* 3 - compute orientation */
nx = 0.0;
ny = 0.0;
for (v = 0; v < (nBlockSize*2+1); v++)
for (u = 0; u < (nBlockSize*2+1); u++)
{
nx += 2 * dx[u][v] * dy[u][v];
ny += dx[u][v]*dx[u][v] - dy[u][v]*dy[u][v];
}
/* compute angle (-pi/2 .. pi/2) */
if (nFilterSize>0)
theta[x+y*w] = atan2(nx, ny);
else
out[x+y*w] = atan2(nx, ny)*0.5;
}
if (nFilterSize>0)
nRet = FingerprintDirectionLowPass(theta, out, nFilterSize, w, h);
}
if (theta!=NULL) free(theta);
return nRet;
}
//*****************************************************
//**********************END ORIENTATION****************///
//***************************************************
//****** get frequency************///////////
FvsError_t FingerprintGetFrequency(const FvsImage_t image, const FvsFloatField_t direction,
FvsFloatField_t frequency)
{
/* width & height of the input image */
FvsError_t nRet = FvsOK;
FvsInt_t w = ImageGetWidth (image);
FvsInt_t h = ImageGetHeight(image);
FvsInt_t pitchi = ImageGetPitch (image);
FvsByte_t* p = ImageGetBuffer(image);
FvsFloat_t* out;
FvsFloat_t* freq;
FvsFloat_t* orientation = FloatFieldGetBuffer(direction);
FvsInt_t x, y, u, v, d, k;
size_t size;
if (p==NULL)
return FvsMemory;
/* (re-)allocate the output image */
nRet = FloatFieldSetSize(frequency, w, h);
if (nRet!=FvsOK) return nRet;
(void)FloatFieldClear(frequency);
freq = FloatFieldGetBuffer(frequency);
if (freq==NULL)
return FvsMemory;
/* allocate memory for the output */
size = w*h*sizeof(FvsFloat_t);
out = (FvsFloat_t*)malloc(size);
if (out!=NULL)
{
FvsFloat_t dir = 0.0;
FvsFloat_t cosdir = 0.0;
FvsFloat_t sindir = 0.0;
FvsInt_t peak_pos[BLOCK_L]; /* peak positions */
FvsInt_t peak_cnt; /* peak count */
FvsFloat_t peak_freq; /* peak frequence */
FvsFloat_t Xsig[BLOCK_L]; /* x signature */
FvsFloat_t pmin, pmax;
memset(out, 0, size);
memset(freq, 0, size);
/* 1 - Divide G into blocks of BLOCK_W x BLOCK_W - (16 x 16) */
for (y = BLOCK_L2; y < h-BLOCK_L2; y++)
for (x = BLOCK_L2; x < w-BLOCK_L2; x++)
{
/* 2 - oriented window of size l x w (32 x 16) in the ridge dir */
dir = orientation[(x+BLOCK_W2) + (y+BLOCK_W2)*w];
cosdir = -sin(dir);
sindir = cos(dir);
/* 3 - compute the x-signature X[0], X[1], ... X[l-1] */
for (k = 0; k < BLOCK_L; k++)
{
Xsig[k] = 0.0;
for (d = 0; d < BLOCK_W; d++)
{
u = (FvsInt_t)(x + (d-BLOCK_W2)*cosdir + (k-BLOCK_L2)*sindir);
v = (FvsInt_t)(y + (d-BLOCK_W2)*sindir - (k-BLOCK_L2)*cosdir);
if (u<0) u = 0; else if (u>w-1) u = w-1;
if (v<0) v = 0; else if (v>h-1) v = h-1;
Xsig[k] += p[u + (v*pitchi)];
}
Xsig[k] /= BLOCK_W;
}
peak_cnt = 0;
pmax = pmin = Xsig[0];
for (k = 1; k < BLOCK_L; k++)
{
if (pmin>Xsig[k]) pmin = Xsig[k];
if (pmax<Xsig[k]) pmax = Xsig[k];
}
if ((pmax - pmin)>64.0)
{
for (k = 1; k < BLOCK_L-1; k++)
if ((Xsig[k-1] < Xsig[k]) && (Xsig[k] >= Xsig[k+1]))
{
peak_pos[peak_cnt++] = k;
}
}
/* compute mean value */
peak_freq = 0.0;
if (peak_cnt>=2)
{
for (k = 0; k < peak_cnt-1; k++)
peak_freq += peak_pos[k+1]-peak_pos[k];
peak_freq /= peak_cnt-1;
}
/* 4 - must lie in a certain range [1/3, 1/25] */
if (peak_freq > 25.0)
out[x+y*w] = 0.0;
else if (peak_freq < 3.0)
out[x+y*w] = 0.0;
else
out[x+y*w] = 1.0/peak_freq;
}
/* 5 - interpolated ridge period for the unknown points */
/*
for (y = BLOCK_L2; y < h-BLOCK_L2; y++)
for (x = BLOCK_L2; x < w-BLOCK_L2; x++)
{
if (out[x+y*w]<EPSILON)
{
if (out[x+(y-1)*w]>EPSILON)
{
out[x+(y*w)] = out[x+(y-1)*w];
}
else
{
if (out[x-1+(y*w)]>EPSILON)
out[x+(y*w)] = out[x-1+(y*w)];
}
}
}
*/
/* 6 - Inter-ridges distance change slowly in a local neighbourhood */
for (y = BLOCK_L2; y < h-BLOCK_L2; y++)
for (x = BLOCK_L2; x < w-BLOCK_L2; x++)
{
k = x + y*w;
peak_freq = 0.0;
for ( v = -LPSIZE; v <= LPSIZE; v++)
for ( u = -LPSIZE; u <= LPSIZE; u++)
peak_freq += out[(x+u)+(y+v)*w];
freq[k] = peak_freq*LPFACTOR;
/* freq[k] = out[k];*/
}
free(out);
}
return nRet;
}
//********** fin de calcule de la fraquence *****************//////
//****************** calcule le mask****////////////////
FvsError_t FingerprintGetMask(const FvsImage_t image, /*@unused@*/ const FvsFloatField_t direction,
const FvsFloatField_t frequency, FvsImage_t mask)
{
FvsError_t nRet = FvsOK;
FvsFloat_t freqmin = 1.0 / 25;
FvsFloat_t freqmax = 1.0 / 3;
/* width & height of the input image */
FvsInt_t w = ImageGetWidth (image);
FvsInt_t h = ImageGetHeight(image);
FvsByte_t* out;
FvsInt_t pitchout;
FvsInt_t pos, posout, x, y;
FvsFloat_t* freq = FloatFieldGetBuffer(frequency);
if (freq==NULL)
return FvsMemory;
/* TODO: add sanity checks for the direction and mask */
nRet = ImageSetSize(mask, w, h);
if (nRet==FvsOK)
nRet = ImageClear(mask);
out = ImageGetBuffer(mask);
if (out==NULL)
return FvsMemory;
if (nRet==FvsOK)
{
pitchout = ImageGetPitch(mask);
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
{
pos = x + y * w;
posout = x + y * pitchout;
out[posout] = 0;
if (freq[pos] >= freqmin && freq[pos] <= freqmax)
{
/* out[posout] = (uint8_t)(10.0/freq[pos]);*/
out[posout] = 255;
}
}
/* fill in the holes */
for (y = 0; y < 4; y++)
(void)ImageDilate(mask);
/* remove borders */
for (y = 0; y < 12; y++)
(void)ImageErode(mask);
}
return nRet;
}
//***********************fin de mask*******************//
//******************************************************
//*****************************fonction suppl pr calcule filtre de gabor*****//
inline FvsFloat_t EnhanceGabor(FvsFloat_t x, FvsFloat_t y, FvsFloat_t phi, FvsFloat_t f)
{
static FvsFloat_t dy2 = 1.0/(4.0*4.0);
static FvsFloat_t dx2 = 1.0/(4.0*4.0);
FvsFloat_t x2, y2;
phi += M_PI/2;
x2 = -x*sin(phi) + y*cos(phi);
y2 = x*cos(phi) + y*sin(phi);
return exp(-0.5*(x2*x2*dx2 + y2*y2*dy2))*cos(2*M_PI*x2*f);
}
static FvsError_t ImageEnhanceFilter
(
FvsImage_t normalized,
const FvsImage_t mask,
const FvsFloat_t* orientation,
const FvsFloat_t* frequence
)
{
FvsInt_t Wg2 = 5; /* from -5 to 5 are 11 */
FvsInt_t i,j, u,v;
FvsError_t nRet = FvsOK;
FvsImage_t enhanced = NULL;
FvsInt_t w = ImageGetWidth (normalized);
FvsInt_t h = ImageGetHeight(normalized);
FvsInt_t pitchG = ImageGetPitch (normalized);
FvsByte_t* pG = ImageGetBuffer(normalized);
FvsFloat_t sum, f, o;
enhanced = ImageCreate();
if (enhanced==NULL || pG==NULL)
return FvsMemory;
if (nRet==FvsOK)
nRet = ImageSetSize(enhanced, w, h);
if (nRet==FvsOK)
{
FvsInt_t pitchE = ImageGetPitch (enhanced);
FvsByte_t* pE = ImageGetBuffer(enhanced);
if (pE==NULL)
return FvsMemory;
(void)ImageClear(enhanced);
for (j = Wg2; j < h-Wg2; j++)
for (i = Wg2; i < w-Wg2; i++)
{
if (ImageGetPixel(mask, i, j)!=0)
{
sum = 0.0;
o = orientation[i+j*w];
f = frequence[i+j*w];
for (v = -Wg2; v <= Wg2; v++)
for (u = -Wg2; u <= Wg2; u++)
{
sum += EnhanceGabor((FvsFloat_t)u,(FvsFloat_t)v,o,f)*
pG[(i-u)+(j-v)*pitchG];
}
/* printf("%6.1f ", sum);*/
if (sum>255.0) sum = 255.0;
if (sum<0.0) sum = 0.0;
pE[i+j*pitchE] = (uint8_t)sum;
}
}
nRet = ImageCopy(normalized, enhanced);
}
(void)ImageDestroy(enhanced);
return nRet;
}
//*****************************end fonction supplimentaire pour calculer le filtre de gabor*******/
//************************export import image**********//
static void ExportImage(const FvsImage_t image, const FvsString_t filename)
{
FvsFile_t file = FileCreate();
if (file!=NULL)
{
//AfxMessageBox(CString("exporting resulting image to ")+CString(filename));
(void)FileOpen (file, filename, FvsFileWrite);
(void)BitmapExport(file, image);
(void)FileClose (file);
FileDestroy(file);
}
}
static void ImportImage(FvsImage_t image, const FvsString_t filename)
{
FvsFile_t file = FileCreate();
if (file!=NULL)
{
/// MessageBox(CString("Opening file ")+CString(filename));
(void)FileOpen (file, filename, FvsFileRead);
(void)AutoImport(file, image);
(void)FileClose (file);
FileDestroy(file);
}
}
//**************************************************
//************* le filtre de gabor********************
FvsError_t ImageEnhanceGabor(FvsImage_t image, const FvsFloatField_t direction,
const FvsFloatField_t frequency, const FvsImage_t mask)
{
FvsError_t nRet = FvsOK;
FvsFloat_t * image_orientation = FloatFieldGetBuffer(direction);
FvsFloat_t * image_frequence = FloatFieldGetBuffer(frequency);
if (image_orientation==NULL || image_frequence==NULL)
return FvsMemory;
nRet = ImageEnhanceFilter(image, mask, image_orientation, image_frequence);
return nRet;
}
//*****************end filtre de gabor*********************
void __fastcall TForm1::Button4Click(TObject *Sender)
{
char *input;
char *output;
int i,j, pix;
FvsImage_t mask;
FvsImage_t image;
FvsFloatField_t direction;
FvsFloatField_t frequency;
//enhancement *enh;
// enh->m_prog.SetRange32(0,100);
/* check if all parameters are there */
/* if (argc!=3)
{
printf("Usage: fvs input.bmp output.bmp\n");
return -1;
}
*/
mask = ImageCreate();
image = ImageCreate();
direction = FloatFieldCreate();
frequency = FloatFieldCreate();
if (mask!=NULL && image!=NULL && direction!=NULL && frequency!=NULL)
{
// remplissage de la matrice emp associée à l'image empreinte
ImportImage(image, input);
/* normalize the image */
(void)ImageNormalize(image, (FvsByte_t)128, (FvsUint_t)128*128);
(void)FingerprintGetDirection(image, direction, 7, 2);
(void)FingerprintGetFrequency(image, direction, frequency);
(void)FingerprintGetMask(image, direction, frequency, mask);
(void)ImageEnhanceGabor(image, direction, frequency, mask);
ExportImage(image, output);
}
}
//--------------------------------------------------------------------------- |
c++ builder code d'erreur: violation d'adresse 7c911278
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