/*
Clean?C?reimplementation?of?three?Character?Normalization?algorithms.
Copyright?（C）?2012?UnilVision.
This?program?is?free?software:?you?can?redistribute?it?and/or?modify
it?under?the?terms?of?the?GNU?Affero?General?Public?License?as
published?by?the?Free?Software?Foundation?either?version?3?of?the
License?or?（at?your?option）?any?later?version.
This?program?is?distributed?in?the?hope?that?it?will?be?useful
but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the
GNU?Affero?General?Public?License?for?more?details.
You?should?have?received?a?copy?of?the?GNU?Affero?General?Public?License
along?with?this?program.??If?not?see?.
*/

#include?“chanorm.h“

#ifndef?min
#define?min（ab）		（（a）<（b）??（a）:（b））
#endif

#ifndef?max
#define?max（ab）		（（a）>（b）??（a）:（b））
#endif

#ifndef?PI
#define?PI				3.1415926f
#endif

float?aspect_radio_mapping（float?r1?int?dst_wid?int?dst_hei
						???int?ratio_preserve_func）
{
	switch（?ratio_preserve_func?）
	{
	case?RADIOFUNC_ASPECT:
		return?r1;
	case?RADIOFUNC_SQUARE:
		return?（float）?sqrt（r1）;
	case?RADIOFUNC_CUBIC:
		return?（float）?pow（r1?0.3333f）;
	case?RADIOFUNC_SINE:
		return?（float）?sqrt（sin（PI*r1/2））;
	default:
		return?（float）?min（?dst_wid?dst_hei?）?/?max（?dst_wid?dst_hei?）;
	}
}

void?backward_linear（unsigned?char*?src?int?src_wid?int?src_hei?int?src_widstep
					?CHARECT_t*?region
					?unsigned?char*?dst?int?dst_wid?int?dst_hei?int?dst_widstep
					?int?ratio_preserve_func）
{
	float?r1?r2;
	int?w1?h1;
	int?w2?h2;
	int?x?y;
	int?xoffset?yoffset;
	int?src_xoffset?src_yoffset;
	float?xscale?yscale;

	w1?=?region->right-region->left;
	h1?=?region->bottom-region->top;
	src_xoffset?=?region->left;
	src_yoffset?=?region->top;

	r1?=?（float）?min（?w1?h1?）?/?max（?w1?h1?）;
	r2?=?aspect_radio_mapping（r1?dst_wid?dst_hei?ratio_preserve_func）;
	memset（?dst?0?dst_hei?*?dst_widstep）;

	if（?w1?>?h1?）
	{
		w2?=?dst_wid;
		h2?=?（int）?（w2?*?r2）;
		xoffset?=?0;
		yoffset?=?（dst_hei?-?h2）/2;
	}
	else?
	{
		h2?=?dst_hei;
		w2?=?（int）?（h2?*?r2）;
		xoffset?=?（dst_wid?-?w2）/2;
		yoffset?=?0;?
	}

	xscale?=?（float）w1?/?w2;
	yscale?=?（float）h1?/?h2;

	for?（y=yoffset;y	{
		int?j?=?y-yoffset;
		if（?j?			continue;

		for?（x=xoffset;x		{
			unsigned?char*?psrc?*psrc1?*psrc2?*psrc3;
			float?tmp0;

			int?i?=?x-xoffset;

			float?x0?=?i?*?xscale?+?src_xoffset;		
			float?y0?=?j?*?yscale?+?src_yoffset;

			int?x0left?=?（int）?x0;
			int?y0left?=?（int）?y0;

			if（?i?				continue;

			if（?x0left?>=?src_wid-1?）
			{
				if（?y0left?>=?src_hei-1?）
				{
					psrc?=?src?+?（src_hei-1）*src_widstep?+?（src_wid-1）;
					psrc1?=?psrc;?
					psrc2?=?psrc;?
					psrc3?=?psrc;?
				}
				else
				{
					psrc?=?src?+?y0left*src_widstep?+?（src_wid-1）;
					psrc1?=?sr

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????14527??2017-03-22?09:23??歸一化算法代碼\chanorm.c

?????文件???????1516??2017-03-22?09:23??歸一化算法代碼\chanorm.h

?????文件???????4306??2017-03-22?09:24??歸一化算法代碼\main.c

?????文件????????144??2017-03-22?09:26??歸一化算法代碼\readme.txt

?????目錄??????????0??2017-04-25?22:02??歸一化算法代碼

-----------?---------??----------?-----??----

????????????????20493????????????????????5