資源簡介
Convert jpeg png or gif to SVG greyscale images
ImageToSVG vectorises greyscale images. It does a reasonable job on continuous tone images though a real good solution is hard.
It takes the number of contours and and a contour accuracy parameter, allowing you to trade off appearance versus SVG image size.
代碼片段和文件信息
//
//??bezierfit.c
//??ansiscratch
//
//??Created?by?Malcolm?McLean?on?13/07/2015.
//??Copyright?（c）?2015?Malcolm?McLean.?All?rights?reserved.
//
#include?
#include?
#include?
#include?“bezierfit.h“
typedef?struct
{
????double?x;
????double?y;
}?Point2;
typedef?Point2?Vector2;
static?double?*g_bezier;
static?int?g_Nbeziers;
static?void?FitCurve（Point2?*d?int?nPts?double?error）;
double?*bez_fitpoints（double?*x?double?*y?int?N?double?tol?int?*Nbez）
{
????double?*answer?=?0;
????int?i;
????
????g_bezier?=?0;
????g_Nbeziers?=?0;
????if（N?==?0）
????{
????????*Nbez?=?0;
????????return?answer;
????}
????if（N?==?1）
????{
????????*Nbez?=?1;
????????
????????answer?=?malloc（8?*?sizeof（double））;
????????for（i=0;i<4;i++）
????????{
????????????answer[i/2]?=?x[0];
????????????answer[i/2+1]?=?y[0];
????????}
????????return?answer;
????}
????if（N?==?2）
????{
????????answer?=?malloc（8?*?sizeof（double））;
????????answer[0]?=?x[0];?answer[1]?=?y[0];
????????answer[2]?=?x[0];?answer[3]?=?y[0];
????????answer[4]?=?x[1];?answer[5]?=?y[1];
????????answer[6]?=?x[1];?answer[7]?=?y[1];
????????return?answer;
????????
????}
????
????Point2?*pts?=?（Point2?*）?malloc（N?*?sizeof（Point2））;
????for（i=0;i
????????pts[i].x?=?x[i];
????????pts[i].y?=?y[i];
????}
????FitCurve（pts?N?tol*tol）;
????answer?=?g_bezier;
*Nbez?=?g_Nbeziers;
????free（pts）;
g_bezier?=?0;
g_Nbeziers?=?0;
????return?answer;
out_of_memory:
????*Nbez?=?-1;
????return?0;
}
typedef?Point2?*BezierCurve;
/*?Forward?declarations?*/
static?void?FitCurve（Point2?*d?int?nPts?double?error）;
static?void?FitCubic（Point2?*d?int?first?int?last?Vector2?tHat1?Vector2?tHat2?double?error）;
static?BezierCurve??GenerateBezier（Point2?*d?int?first?int?last?double?*uPrime?Vector2?tHat1?Vector2?tHat2）;
static?double?*Reparameterize（Point2?*d?int?first?int?last?double?*u?BezierCurve?bezCurve）;
static?double?NewtonRaphsonRootFind（BezierCurve?Q?Point2?P?double?u）;
static?Point2?BezierII（int?degree?Point2?*V?double?t）;
static?double?B0（double?u）;
static?double?B1（double?u）;
static?double?B2（double?u）;
static?double?B3（double?u）;
static?Vector2?ComputeLeftTangent（Point2?*?d?int?end）;
static?Vector2?ComputeRightTangent（Point2?*?d?int?end）;
static?Vector2?ComputeCenterTangent（Point2?*d?int?center）;
static?double?*ChordLengthParameterize（Point2?*d?int?first?int?last）;
static?double?ComputeMaxError（Point2?*d?int?first?int?last?BezierCurve?bezCurve?double?*?u?int?*?splitPoint）;
static?Vector2?V2AddII（Vector2?a?Vector2?b）;
static?Vector2?V2ScaleIII（Vector2?v?double?s）;
static?Vector2?V2SubII（Vector2?a?Vector2?b）;
/*
?static double *Reparameterize（）;
?static double NewtonRaphsonRootFind（）;
?static Point2 BezierII（）;
?static double? B0（）?B1（）?B2（）?B3（）;
?static Vector2 ComputeLeftTangent（）;
?static Vector2 ComputeRightTangent（）;
?static Vector2 ComputeCenterTangent（）;
?static double ComputeMaxError（）;
?static double *ChordLengthParameterize（）;
??屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-07-15?15:36??ImageToSVG\
?????文件???????21418??2015-07-14?04:26??ImageToSVG\bezierfit.c
?????文件?????????343??2015-07-14?03:43??ImageToSVG\bezierfit.h
?????文件???????29994??2015-07-14?04:01??ImageToSVG\binaryutils.c
?????文件????????1772??2015-07-14?03:42??ImageToSVG\binaryutils.h
?????文件???????27219??2015-07-14?06:45??ImageToSVG\bmp.c
?????文件?????????693??2014-12-29?17:01??ImageToSVG\bmp.h
?????目錄???????????0??2015-07-14?05:05??ImageToSVG\Debug\
?????文件???????40340??2015-07-14?04:26??ImageToSVG\Debug\bezierfit.obj
?????文件???????47233??2015-07-14?04:01??ImageToSVG\Debug\binaryutils.obj
?????文件???????39953??2015-07-14?05:04??ImageToSVG\Debug\bmp.obj
?????文件???????43397??2015-07-14?05:04??ImageToSVG\Debug\gif.obj
?????文件???????12351??2015-07-14?06:39??ImageToSVG\Debug\greyscaletosvg.obj
?????文件????????2324??2015-07-14?06:39??ImageToSVG\Debug\ImageToSVG.log
?????目錄???????????0??2015-07-14?06:39??ImageToSVG\Debug\ImageToSVG.tlog\
?????文件????????7302??2015-07-14?06:39??ImageToSVG\Debug\ImageToSVG.tlog\cl.command.1.tlog
?????文件???????18494??2015-07-14?06:39??ImageToSVG\Debug\ImageToSVG.tlog\CL.read.1.tlog
?????文件???????10380??2015-07-14?06:39??ImageToSVG\Debug\ImageToSVG.tlog\CL.write.1.tlog
?????文件?????????199??2015-07-14?06:39??ImageToSVG\Debug\ImageToSVG.tlog\ImageToSVG.lastbuildstate
?????文件????????4770??2015-07-14?06:39??ImageToSVG\Debug\ImageToSVG.tlog\li
?????文件????????6000??2015-07-14?06:39??ImageToSVG\Debug\ImageToSVG.tlog\li
?????文件????????2434??2015-07-14?06:39??ImageToSVG\Debug\ImageToSVG.tlog\li
?????文件???????52992??2015-07-14?05:04??ImageToSVG\Debug\jpeg.obj
?????文件???????16702??2015-07-14?05:04??ImageToSVG\Debug\loadimage.obj
?????文件??????262459??2015-07-14?05:04??ImageToSVG\Debug\lodepng.obj
?????文件????????9073??2015-07-14?06:12??ImageToSVG\Debug\main.obj
?????文件???????21925??2015-07-14?05:05??ImageToSVG\Debug\rbtree.obj
?????文件???????76800??2015-07-14?06:39??ImageToSVG\Debug\vc120.idb
?????文件??????118784??2015-07-14?06:39??ImageToSVG\Debug\vc120.pdb
?????文件???????21769??2014-12-29?17:01??ImageToSVG\gif.c
?????文件?????????295??2014-12-29?17:01??ImageToSVG\gif.h
............此處省略38個文件信息
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