{"id":5,"date":"2023-11-25T17:50:48","date_gmt":"2023-11-25T09:50:48","guid":{"rendered":"https:\/\/ablazy.cn\/?p=5"},"modified":"2023-11-25T17:52:05","modified_gmt":"2023-11-25T09:52:05","slug":"%e4%bd%8d%e5%9b%be%e6%94%be%e7%bc%a9","status":"publish","type":"post","link":"https:\/\/ablazy.cn\/index.php\/2023\/11\/25\/%e4%bd%8d%e5%9b%be%e6%94%be%e7%bc%a9\/","title":{"rendered":"\u4f4d\u56fe\u653e\u7f29"},"content":{"rendered":"<p><em>\u4f7f\u7528\u53cc\u7ebf\u6027\u63d2\u503c\u6cd5<\/em><\/p>\n<h2 id=\"\u8bbe\u8ba1\u601d\u8def\">\u8bbe\u8ba1\u601d\u8def<\/h2>\n<ol start=\"\">\n<li>\u4f7f\u7528\u7ed3\u6784\u4f53\u521b\u5efa\u4f4d\u56fe\u6587\u4ef6\u7684\u5934\u6587\u4ef6\u548c\u4fe1\u606f\u5934\uff1b<\/li>\n<li>\u4ece\u547d\u4ee4\u884c\u83b7\u53d6\u6587\u4ef6\u540d\uff0c\u521b\u5efa\u6587\u4ef6\u6d41\uff1b<\/li>\n<li>\u6309\u7167\u653e\u7f29\u6bd4\u4f8b\u4fee\u6539\u4f4d\u56fe\u6587\u4ef6\u5934\u548c\u4f4d\u56fe\u4fe1\u606f\u5934\u4e2d\u76f8\u5173\u7684\u6570\u636e\uff08\u5206\u8fa8\u7387\u7b49\uff09\uff1b<\/li>\n<li>\u521b\u5efa\u6307\u9488\u5b58\u50a8\u4f4d\u56fe\u6570\u636e\uff0c\u5c31\u662f\u50cf\u7d20\u989c\u8272\u6570\u636e\uff1b<\/li>\n<li>\u53cc\u7ebf\u6027\u63d2\u503c\u6cd5\u5904\u7406\u653e\u7f29\u540e\u7684\u56fe\u50cf\u989c\u8272\uff1b<\/li>\n<li>\u5c06\u5f97\u5230\u7684\u65b0\u6570\u636e\u5199\u5165\u76ee\u6807\u4f4d\u56fe\u6587\u4ef6.<\/li>\n<\/ol>\n<h2 id=\"\u5177\u4f53\u5b9e\u73b0\">\u5177\u4f53\u5b9e\u73b0<\/h2>\n<h3 id=\"\u5168\u5c40\u58f0\u660e\">\u5168\u5c40\u58f0\u660e<\/h3>\n<p>\u4f7f\u7528\u4f2a\u6307\u4ee4\u8ba9\u7ed3\u6784\u4f53\u4ee5\u4e00\u4e2a\u5b57\u8282\u5bf9\u9f50\uff0c\u80fd\u6b63\u786e\u83b7\u53d6\u7ed3\u6784\u4f53\u5360\u6709\u7684\u5185\u5b58\uff1b<\/p>\n<p>\u4f7f\u7528\u4f4d\u56fe\u4e2d\u7684\u540d\u8bcd\u58f0\u660e\u7c7b\u578b\uff1b<\/p>\n<pre><code class=\"language-c\" lang=\"c\">#pragma pack(1)\n\ntypedef unsigned char BYTE;\ntypedef unsigned short int WORD;\ntypedef unsigned int DWORD;\ntypedef int LONG;\n<\/code><\/pre>\n<ol start=\"\">\n<li>\u4f4d\u56fe\u6587\u4ef6\u5934\u7684\u5b9a\u4e49:<\/li>\n<\/ol>\n<pre><code class=\"language-c\" lang=\"c\">\/\/14\u5b57\u8282\u7684\u6587\u4ef6\u5934\ntypedef struct tagBITMAPFILEHEADER{\n    WORD bfType; \/\/2\u5b57\u8282\uff0c\u6587\u4ef6\u7c7b\u578b\n    DWORD bfSize; \/\/4\u5b57\u8282\uff0c\u6587\u4ef6\u5927\u5c0f\n    WORD bfReserved1,bfReserved2; \/\/2\u5b57\u8282\uff0c\u4fdd\u7559\uff0c\u5fc5\u987b\u8bbe\u7f6e\u4e3a0\n    DWORD bfOffBits; \/\/4\u5b57\u8282\uff0c\u4ece\u5934\u5230\u4f4d\u56fe\u6570\u636e\u7684\u504f\u79fb\n}BITMAPFILEHEADER;\n<\/code><\/pre>\n<p>\u4f4d\u56fe\u4fe1\u606f\u5934\u7684\u5b9a\u4e49:<\/p>\n<pre><code class=\"language-c\" lang=\"c\">typedef struct tagBITMAPINFOHEADER{\n    DWORD biSize;  \/\/4\u5b57\u8282\uff0c\u4fe1\u606f\u5934\u7684\u5927\u5c0f\n    LONG biWidth,biHeight;   \/\/biWidth\uff1a4\u5b57\u8282\uff0c\u4ee5\u50cf\u7d20\u4e3a\u5355\u4f4d\u8bf4\u660e\u56fe\u50cf\u7684\u5bbd\u5ea6\uff1b\n    \/\/biHeight\uff1a4\u5b57\u8282\uff0c\u4ee5\u50cf\u7d20\u4e3a\u5355\u4f4d\u8bf4\u660e\u56fe\u50cf\u7684\u9ad8\u5ea6\uff0c\u540c\u65f6\u5982\u679c\u4e3a\u6b63\uff0c\u8bf4\u660e\u4f4d\u56fe\u5012\u7acb\uff08\u5373\u6570\u636e\u8868\u793a\u4ece\u56fe\u50cf\u7684\u5de6\u4e0b\u89d2\u5230\u53f3\u4e0a\u89d2\uff09\uff0c\u5982\u679c\u4e3a\u8d1f\u8bf4\u660e\u6b63\u5411\uff1b\n    WORD biPlanes;    \/\/2\u5b57\u8282\uff0c\u4e3a\u76ee\u6807\u8bbe\u5907\u8bf4\u660e\u989c\u8272\u5e73\u9762\u6570\uff0c\u603b\u88ab\u8bbe\u7f6e\u4e3a1\n    WORD biBitCount;  \/\/2\u5b57\u8282\uff0c\u8bf4\u660e\u6bd4\u7279\u6570\/\u50cf\u7d20\u6570\uff0c\u503c\u67091\u30012\u30014\u30018\u300116\u300124\u300132\n    DWORD biCompression; \/\/4\u5b57\u8282\uff0c\u8bf4\u660e\u56fe\u50cf\u7684\u538b\u7f29\u7c7b\u578b\uff0c\u6700\u5e38\u7528\u7684\u5c31\u662f0\uff08BI_RGB\uff09\uff0c\u8868\u793a\u4e0d\u538b\u7f29\n    DWORD biSizeImages;  \/\/4\u5b57\u8282\uff0c\u8bf4\u660e\u4f4d\u56fe\u6570\u636e\u7684\u5927\u5c0f\uff0c\u5f53\u7528BI_RGB\u683c\u5f0f\u65f6\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4e3a0\n    LONG biXPelsPerMeter;    \/\/\u8868\u793a\u6c34\u5e73\u5206\u8fa8\u7387\uff0c\u5355\u4f4d\u662f\u50cf\u7d20\/\u7c73\uff0c\u6709\u7b26\u53f7\u6574\u6570\n    LONG biYPelsPerMeter;    \/\/\u8868\u793a\u5782\u76f4\u5206\u8fa8\u7387\uff0c\u5355\u4f4d\u662f\u50cf\u7d20\/\u7c73\uff0c\u6709\u7b26\u53f7\u6574\u6570\n    DWORD biClrUsed; \/\/\u8bf4\u660e\u4f4d\u56fe\u4f7f\u7528\u7684\u8c03\u8272\u677f\u4e2d\u7684\u989c\u8272\u7d22\u5f15\u6570\uff0c\u4e3a0\u8bf4\u660e\u4f7f\u7528\u6240\u6709\n    DWORD biClrImportant;    \/\/\u660e\u5bf9\u56fe\u50cf\u663e\u793a\u6709\u91cd\u8981\u5f71\u54cd\u7684\u989c\u8272\u7d22\u5f15\u6570\uff0c\u4e3a0\u8bf4\u660e\u90fd\u91cd\u8981\n}BITMAPINFOHEADER;\n<\/code><\/pre>\n<ol start=\"2\">\n<li>\u547d\u4ee4\u884c\u4e2d\u7684\u7b2c\u4e8c\u3001\u7b2c\u56db\u4e2a\u53c2\u6570\u662f\u539f\u6587\u4ef6\u540d\u548c\u76ee\u6807\u6587\u4ef6\u540d\uff0c\u7b2c\u4e09\u4e2a\u53c2\u6570\u662f\u653e\u7f29\u6bd4\u4f8b\uff1b<\/li>\n<\/ol>\n<pre><code class=\"language-c\" lang=\"c\">char *filename,*result;\n    filename=argv[1];\t\/\/\u539f\u6587\u4ef6\u540d\n    result=argv[3];\t\t\/\/\u76ee\u6807\u6587\u4ef6\u540d\n    FILE *fp;\n    fp=fopen(filename,\"rb\");\n    FILE *rp;\n    rp=fopen(result,\"wb\");\n    char *op;\n    op=argv[2];\t\t\/\/\u653e\u7f29\u767e\u5206\u6bd4\n    double a=(double)atoi(op)\/100;\t\/\/\u767e\u5206\u6bd4\u5316\u6210\u5c0f\u6570\n<\/code><\/pre>\n<ol start=\"3\">\n<li>\u4f4d\u56fe\u6587\u4ef6\u5934\u548c\u4f4d\u56fe\u4fe1\u606f\u5934\u4e2d\u7684\u6570\u636e\u4fee\u6539\uff1b<\/li>\n<\/ol>\n<pre><code class=\"language-c\" lang=\"c\">    BITMAPFILEHEADER src_fh,src_re_fh;\t\/\/\u7528\u4e8e\u50a8\u5b58\u6587\u4ef6\u5934\n    BITMAPINFOHEADER src_ih,src_re_ih;\t\/\/\u7528\u4e8e\u50a8\u5b58\u4fe1\u606f\u5934\n    fread(&amp;src_fh,sizeof(BITMAPFILEHEADER),1,fp);\n    fread(&amp;src_ih,sizeof(BITMAPINFOHEADER),1,fp);\n    unsigned int filename_size;\n    filename_size=src_ih.biHeight*src_ih.biWidth;   \/\/\u5f97\u5230\u539f\u56fe\u7684\u50cf\u7d20\u5927\u5c0f\n    \/\/\u6587\u4ef6\u5934\u548c\u4fe1\u606f\u5934\u57fa\u672c\u7c7b\u4f3c\uff0c\u5148copy\n    src_re_fh=src_fh;\n    src_re_ih=src_ih;\n    src_re_ih.biHeight=(LONG)(src_ih.biHeight*a);\t\/\/\u76ee\u6807\u4f4d\u56fe\u7684\u9ad8\t\n    src_re_ih.biWidth=(LONG)(src_ih.biWidth*a);\t\t\/\/\u76ee\u6807\u4f4d\u56fe\u7684\u5bbd\n    unsigned int result_size=src_re_ih.biWidth*src_re_ih.biHeight;  \/\/\u76ee\u6807\u56fe\u7684\u50cf\u7d20\u5927\u5c0f\n    src_re_fh.bfSize=54+result_size*sizeof(int);\n    fwrite(&amp;src_re_fh,sizeof(BITMAPFILEHEADER),1,rp);   \/\/\u4fee\u6539\u597d\u7684\u6587\u4ef6\u5934\u5199\u5165\u5230\u76ee\u6807\u6587\u4ef6\n    fwrite(&amp;src_re_ih,sizeof(BITMAPINFOHEADER),1,rp);   \/\/\u4fee\u6539\u597d\u7684\u4fe1\u606f\u5934\u5199\u5165\u5230\u76ee\u6807\u6587\u4ef6\n<\/code><\/pre>\n<ol start=\"4\">\n<li>\u521b\u5efa\u6570\u636e\u6307\u9488\uff1b<\/li>\n<\/ol>\n<pre><code class=\"language-c\" lang=\"c\">unsigned char *fp_pixels,*re_pixels;    \/\/\u7528\u4e8e\u50a8\u5b58\u548c\u64cd\u4f5c\u4f4d\u56fe\u6570\u636e\u7684\u6570\u7ec4\nfp_pixels=(unsigned char*)malloc(sizeof(int)*filename_size);    \/\/\u5206\u914d\u7a7a\u95f4\nfread(fp_pixels,sizeof(int),filename_size,fp);\nre_pixels=(unsigned char*)malloc(sizeof(int)*result_size);  \/\/\u5206\u914d\u7a7a\u95f4 \n<\/code><\/pre>\n<ol start=\"5\">\n<li>\u53cc\u7ebf\u6027\u5dee\u503c\u6cd5\u7684\u5b9e\u73b0\uff1b<\/li>\n<\/ol>\n<p>\u53cc\u7ebf\u6027\u5dee\u503c\u6cd5\u7684\u539f\u7406\u662f\u901a\u8fc7\u76ee\u6807\u70b9\u9644\u8fd1\u7684\u56db\u4e2a\u70b9\u7684\u6743\u91cd\u6765\u5206\u914d\u76ee\u6807\u70b9\u7684\u503c\uff0c\u516c\u5f0f\u5982\u4e0b\uff1a<br \/>\n$$<br \/>\nf\\left( x,y \\right) \\approx \\left( 1-u \\right) \\left( 1-v \\right) f\\left( x_1,y_1 \\right) +u\\left( 1-v \\right) f\\left( x_1+1,y_1 \\right) +\\left( 1-u \\right) vf\\left( x_1,y_1+1 \\right) +uvf\\left( x_1+1,y_1+1 \\right)<br \/>\n$$<br \/>\n\u76ee\u6807\u70b9\u4e3a<script type=\"math\/tex\">(x,y)<\/script>,\u5bf9\u5e94\u5230\u539f\u56fe\u4e2d\u7684\u70b9\u4e3a<script type=\"math\/tex\">(x_1,y_1)<\/script>\uff0c<script type=\"math\/tex\">x_1 = x \\div a, y_1 = y \\div a<\/script>.<script type=\"math\/tex\">(x_1,y_1)<\/script>\u53ca\u5176\u5468\u56f4\u7684\u5176\u4ed6\u4e09\u4e2a\u70b9\uff0c\u7531\u4e8e\u653e\u7f29\u540e<script type=\"math\/tex\">x_1<\/script>\uff0c<script type=\"math\/tex\">y_1<\/script>\u53ef\u80fd\u662f\u5c0f\u6570\uff0c\u56e0\u6b64\uff0c\u4ee4<script type=\"math\/tex\">u = x_1 - [x_1]<\/script>,<script type=\"math\/tex\">v = y_1 - [y_1]<\/script><br \/>\n\u200b\u9700\u8981\u6ce8\u610f\u5750\u6807\u548c\u5177\u4f53\u50cf\u7d20\u70b9\u7684R,G,B\u4e09\u79cd\u989c\u8272\u5750\u6807\u4e0a\u7684\u5bf9\u5e94\u5173\u7cfb\uff0c24\u4f4dbmp\u4e2d\u4e00\u4e2a\u50cf\u7d20\u53ea\u67093\u79cd\u989c\u8272\u7684\u6570\u636e\uff083\u4e2a\u5b57\u8282\uff09<\/p>\n<p>\u4ee3\u7801\u5b9e\u73b0\uff1a<\/p>\n<pre><code class=\"language-c\" lang=\"c\">for (int x=0;x&lt;src_re_ih.biWidth;x++)\n    {\n        for (int y=0;y&lt;src_re_ih.biHeight;y++)\n        {\n            double xx,yy;\n            xx=(double)x\/a;\n            yy=(double)y\/a;\n            double u,v;\n            u=xx-(int)xx;\n            v=yy-(int)yy;\n            \/\/\u786e\u5b9a\u662f\u54ea\u51e0\u4e2a\u50cf\u7d20\u9700\u8981\u88ab\u4f7f\u7528\n            int result_order=x+y*src_re_ih.biWidth;\n            int filename_order1=(int)xx+(int)yy*src_ih.biWidth;\n            int filename_order2=((int)(xx)+1)+(int)yy*src_ih.biWidth;\n            int filename_order3=(int)xx+((int)yy+1)*src_ih.biWidth;\n            int filename_order4=((int)(xx)+1)+((int)yy+1)*src_ih.biWidth;\n            \/\/\u6ce8\u610f\u8ba8\u8bba\u8fb9\u754c\u60c5\u51b5\n            if ((int)(xx)+1&gt;=src_ih.biWidth)\n            {\n                filename_order2=filename_order1;\n                filename_order4=filename_order3;\n            }\n            if ((int)(yy)+1&gt;=src_ih.biHeight)\n            {\n                filename_order3=filename_order1;\n                filename_order4=filename_order2;\n            }\n            \/\/\u5bf9\u4f4d\u56fe\u6570\u636e\u8fdb\u884c\u64cd\u4f5c\n            for (int i=0;i&lt;3;i++)\n            {\n                re_pixels[3*result_order+i] = (1 - u) * (1 - v) * fp_pixels[3*filename_order1+i] +\n                                              u * (1 - v) * fp_pixels[3*filename_order2+i]\n                                              + (1 - u) * v * fp_pixels[3*filename_order3+i] +\n                                              u * v * fp_pixels[3*filename_order4+i];\n            }\n        }\n    }\n<\/code><\/pre>\n<ol start=\"6\">\n<li>\u5f97\u5230\u7684\u6570\u636e\u5199\u5165\u76ee\u6807\u4f4d\u56fe\u6587\u4ef6<\/li>\n<\/ol>\n<pre><code class=\"language-c\" lang=\"c\">fwrite(re_pixels,sizeof(int),result_size,rp);   \/\/\u5199\u5165\u4f4d\u56fe\u6570\u636e\u5230\u6587\u4ef6\n<\/code><\/pre>\n<h1 id=\"\u5b8c\u6574\u4ee3\u7801\">\u5b8c\u6574\u4ee3\u7801<\/h1>\n<pre><code class=\"language-c\" lang=\"c\">\/\/\n\/\/ Created by Ablazy on 2022\/5\/18.\n\/\/\n#include&lt;stdio.h&gt;\n#include&lt;stdlib.h&gt;\n#include&lt;malloc.h&gt;\n\/\/\u4f2a\u6307\u4ee4\uff0c\u4ee51\u5b57\u8282\u5bf9\u9f50\uff0c\u9632\u6b62\u81ea\u52a8\u5bf9\u9f50\n#pragma pack(1)\n\ntypedef unsigned char BYTE;\ntypedef unsigned short int WORD;\ntypedef unsigned int DWORD;\ntypedef int LONG;\n\n\/\/14\u5b57\u8282\u7684\u6587\u4ef6\u5934\ntypedef struct tagBITMAPFILEHEADER{\n    WORD bfType; \/\/2\u5b57\u8282\uff0c\u6587\u4ef6\u7c7b\u578b\n    DWORD bfSize; \/\/4\u5b57\u8282\uff0c\u6587\u4ef6\u5927\u5c0f\n    WORD bfReserved1,bfReserved2; \/\/2\u5b57\u8282\uff0c\u4fdd\u7559\uff0c\u5fc5\u987b\u8bbe\u7f6e\u4e3a0\n    DWORD bfOffBits; \/\/4\u5b57\u8282\uff0c\u4ece\u5934\u5230\u4f4d\u56fe\u6570\u636e\u7684\u504f\u79fb\n}BITMAPFILEHEADER;\n\n\/\/40\u4f4d\u7684\u4fe1\u606f\u5934\ntypedef struct tagBITMAPINFOHEADER{\n    DWORD biSize;  \/\/4\u5b57\u8282\uff0c\u4fe1\u606f\u5934\u7684\u5927\u5c0f\n    LONG biWidth,biHeight;   \/\/biWidth\uff1a4\u5b57\u8282\uff0c\u4ee5\u50cf\u7d20\u4e3a\u5355\u4f4d\u8bf4\u660e\u56fe\u50cf\u7684\u5bbd\u5ea6\uff1b\n    \/\/biHeight\uff1a4\u5b57\u8282\uff0c\u4ee5\u50cf\u7d20\u4e3a\u5355\u4f4d\u8bf4\u660e\u56fe\u50cf\u7684\u9ad8\u5ea6\uff0c\u540c\u65f6\u5982\u679c\u4e3a\u6b63\uff0c\u8bf4\u660e\u4f4d\u56fe\u5012\u7acb\uff08\u5373\u6570\u636e\u8868\u793a\u4ece\u56fe\u50cf\u7684\u5de6\u4e0b\u89d2\u5230\u53f3\u4e0a\u89d2\uff09\uff0c\u5982\u679c\u4e3a\u8d1f\u8bf4\u660e\u6b63\u5411\uff1b\n    WORD biPlanes;    \/\/2\u5b57\u8282\uff0c\u4e3a\u76ee\u6807\u8bbe\u5907\u8bf4\u660e\u989c\u8272\u5e73\u9762\u6570\uff0c\u603b\u88ab\u8bbe\u7f6e\u4e3a1\n    WORD biBitCount;  \/\/2\u5b57\u8282\uff0c\u8bf4\u660e\u6bd4\u7279\u6570\/\u50cf\u7d20\u6570\uff0c\u503c\u67091\u30012\u30014\u30018\u300116\u300124\u300132\n    DWORD biCompression; \/\/4\u5b57\u8282\uff0c\u8bf4\u660e\u56fe\u50cf\u7684\u538b\u7f29\u7c7b\u578b\uff0c\u6700\u5e38\u7528\u7684\u5c31\u662f0\uff08BI_RGB\uff09\uff0c\u8868\u793a\u4e0d\u538b\u7f29\n    DWORD biSizeImages;  \/\/4\u5b57\u8282\uff0c\u8bf4\u660e\u4f4d\u56fe\u6570\u636e\u7684\u5927\u5c0f\uff0c\u5f53\u7528BI_RGB\u683c\u5f0f\u65f6\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4e3a0\n    LONG biXPelsPerMeter;    \/\/\u8868\u793a\u6c34\u5e73\u5206\u8fa8\u7387\uff0c\u5355\u4f4d\u662f\u50cf\u7d20\/\u7c73\uff0c\u6709\u7b26\u53f7\u6574\u6570\n    LONG biYPelsPerMeter;    \/\/\u8868\u793a\u5782\u76f4\u5206\u8fa8\u7387\uff0c\u5355\u4f4d\u662f\u50cf\u7d20\/\u7c73\uff0c\u6709\u7b26\u53f7\u6574\u6570\n    DWORD biClrUsed; \/\/\u8bf4\u660e\u4f4d\u56fe\u4f7f\u7528\u7684\u8c03\u8272\u677f\u4e2d\u7684\u989c\u8272\u7d22\u5f15\u6570\uff0c\u4e3a0\u8bf4\u660e\u4f7f\u7528\u6240\u6709\n    DWORD biClrImportant;    \/\/\u660e\u5bf9\u56fe\u50cf\u663e\u793a\u6709\u91cd\u8981\u5f71\u54cd\u7684\u989c\u8272\u7d22\u5f15\u6570\uff0c\u4e3a0\u8bf4\u660e\u90fd\u91cd\u8981\n}BITMAPINFOHEADER;\n\nint main(int argc,char * argv[])\n{\n    char *filename,*result;\n    filename=argv[1];\n    result=argv[3];\n    FILE *fp;\n    fp=fopen(filename,\"rb\");\n    FILE *rp;\n    rp=fopen(result,\"wb\");\n    char *op;\n    op=argv[2];\n    double a=(double)atoi(op)\/100;\n    BITMAPFILEHEADER src_fh,src_re_fh;  \/\/\u7528\u4e8e\u50a8\u5b58\u6587\u4ef6\u5934\n    BITMAPINFOHEADER src_ih,src_re_ih;  \/\/\u7528\u4e8e\u50a8\u5b58\u4fe1\u606f\u5934\n    fread(&amp;src_fh,sizeof(BITMAPFILEHEADER),1,fp);\n    fread(&amp;src_ih,sizeof(BITMAPINFOHEADER),1,fp);\n    unsigned int filename_size;\n    filename_size=src_ih.biHeight*src_ih.biWidth;   \/\/\u5f97\u5230\u539f\u56fe\u7684\u50cf\u7d20\u5927\u5c0f\n    \/\/\u6587\u4ef6\u5934\u548c\u4fe1\u606f\u5934\u57fa\u672c\u7c7b\u4f3c\uff0c\u5148copy\n    src_re_fh=src_fh;\n    src_re_ih=src_ih;\n    src_re_ih.biHeight=(LONG)(src_ih.biHeight*a);   \/\/\u76ee\u6807\u4f4d\u56fe\u7684\u9ad8\n    src_re_ih.biWidth=(LONG)(src_ih.biWidth*a); \/\/\u76ee\u6807\u4f4d\u56fe\u7684\u5bbd\n    unsigned int result_size=src_re_ih.biWidth*src_re_ih.biHeight;  \/\/\u76ee\u6807\u56fe\u7684\u50cf\u7d20\u5927\u5c0f\n    src_re_fh.bfSize=54+result_size*sizeof(int);\n    fwrite(&amp;src_re_fh,sizeof(BITMAPFILEHEADER),1,rp);   \/\/\u4fee\u6539\u597d\u7684\u6587\u4ef6\u5934\u5199\u5165\u5230\u76ee\u6807\u6587\u4ef6\n    fwrite(&amp;src_re_ih,sizeof(BITMAPINFOHEADER),1,rp);   \/\/\u4fee\u6539\u597d\u7684\u4fe1\u606f\u5934\u5199\u5165\u5230\u76ee\u6807\u6587\u4ef6\n    unsigned char *fp_pixels,*re_pixels;    \/\/\u7528\u4e8e\u50a8\u5b58\u548c\u64cd\u4f5c\u4f4d\u56fe\u6570\u636e\u7684\u6570\u7ec4\n    fp_pixels=(unsigned char*)malloc(sizeof(int)*filename_size);    \/\/\u5206\u914d\u7a7a\u95f4\n    fread(fp_pixels,sizeof(int),filename_size,fp);\n    re_pixels=(unsigned char*)malloc(sizeof(int)*result_size);  \/\/\u5206\u914d\u7a7a\u95f4\n    \/\/\n    \/\/\u4ee5\u4e0b\u662f\u53cc\u7ebf\u6027\u63d2\u503c\u6cd5\u7684\u5b9e\u73b0\n    \/\/\n    for (int x=0;x&lt;src_re_ih.biWidth;x++)\n    {\n        for (int y=0;y&lt;src_re_ih.biHeight;y++)\n        {\n            double xx,yy;\n            xx=(double)x\/a;\n            yy=(double)y\/a;\n            double u,v;\n            u=xx-(int)xx;\n            v=yy-(int)yy;\n            \/\/\u786e\u5b9a\u662f\u54ea\u51e0\u4e2a\u50cf\u7d20\u9700\u8981\u88ab\u4f7f\u7528\n            int result_order=x+y*src_re_ih.biWidth;\n            int filename_order1=(int)xx+(int)yy*src_ih.biWidth;\n            int filename_order2=((int)(xx)+1)+(int)yy*src_ih.biWidth;\n            int filename_order3=(int)xx+((int)yy+1)*src_ih.biWidth;\n            int filename_order4=((int)(xx)+1)+((int)yy+1)*src_ih.biWidth;\n            \/\/\u6ce8\u610f\u8ba8\u8bba\u8fb9\u754c\u60c5\u51b5\n            if ((int)(xx)+1&gt;=src_ih.biWidth)\n            {\n                filename_order2=filename_order1;\n                filename_order4=filename_order3;\n            }\n            if ((int)(yy)+1&gt;=src_ih.biHeight)\n            {\n                filename_order3=filename_order1;\n                filename_order4=filename_order2;\n            }\n            \/\/\u5bf9\u4f4d\u56fe\u6570\u636e\u8fdb\u884c\u64cd\u4f5c\n            for (int i=0;i&lt;3;i++)\n            {\n                re_pixels[3*result_order+i] = (1 - u) * (1 - v) * fp_pixels[3*filename_order1+i] +\n                                              u * (1 - v) * fp_pixels[3*filename_order2+i]\n                                              + (1 - u) * v * fp_pixels[3*filename_order3+i] +\n                                              u * v * fp_pixels[3*filename_order4+i];\n            }\n        }\n    }\n    \/\/\n    \/\/\u7ed3\u675f\n    \/\/\n    fwrite(re_pixels,sizeof(int),result_size,rp);   \/\/\u5199\u5165\u4f4d\u56fe\u6570\u636e\u5230\u6587\u4ef6\n    free(fp_pixels);\n    free(re_pixels);\n    fclose(fp);\n    fclose(rp);\n    return 0;\n}\n<\/code><\/pre>\n<h1 id=\"\u6d4b\u8bd5\u6837\u4f8b\">\u6d4b\u8bd5\u6837\u4f8b<\/h1>\n<h2 id=\"\u6d4b\u8bd51\">\u6d4b\u8bd51<\/h2>\n<p>\u547d\u4ee4\u884c\u8f93\u5165\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.ablazy.cn\/img\/image-20220521212715379.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.ablazy.cn\/img\/image-20220521212715379.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20220521212715379\" 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src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.ablazy.cn\/img\/image-20220521213152240.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20220521213152240\" \/><\/div><\/p>\n<p>\u56fe\u7247\u5c5e\u6027\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.ablazy.cn\/img\/image-20220521213437491.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.ablazy.cn\/img\/image-20220521213437491.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20220521213437491\" \/><\/div><\/p>\n<h2 id=\"\u6d4b\u8bd52\">\u6d4b\u8bd52\uff1a<\/h2>\n<p>\u547d\u4ee4\u884c\u8f93\u5165\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.ablazy.cn\/img\/image-20220521213547845.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.ablazy.cn\/img\/image-20220521213547845.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20220521213547845\" \/><\/div><\/p>\n<p>\u539f\u56fe\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.ablazy.cn\/img\/image-20220521214621777.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.ablazy.cn\/img\/image-20220521214621777.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20220521214621777\" \/><\/div><\/p>\n<p>\u7ed3\u679c\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.ablazy.cn\/img\/image-20220521214647192.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.ablazy.cn\/img\/image-20220521214647192.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20220521214647192\" \/><\/div>\u56fe\u7247\u5c5e\u6027\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.ablazy.cn\/img\/image-20220521214139801.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.ablazy.cn\/img\/image-20220521214139801.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20220521214139801\" \/><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528\u53cc\u7ebf\u6027\u63d2\u503c\u6cd5 \u8bbe\u8ba1\u601d\u8def \u4f7f\u7528\u7ed3\u6784\u4f53\u521b\u5efa\u4f4d\u56fe\u6587\u4ef6\u7684\u5934\u6587\u4ef6\u548c\u4fe1\u606f\u5934\uff1b \u4ece\u547d\u4ee4\u884c\u83b7\u53d6\u6587\u4ef6\u540d\uff0c\u521b\u5efa\u6587\u4ef6\u6d41\uff1b \u6309\u7167\u653e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[3,4],"class_list":["post-5","post","type-post","status-publish","format-standard","hentry","category-c","tag-c","tag-4"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/posts\/5","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/comments?post=5"}],"version-history":[{"count":4,"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/posts\/5\/revisions"}],"predecessor-version":[{"id":25,"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/posts\/5\/revisions\/25"}],"wp:attachment":[{"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/media?parent=5"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/categories?post=5"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ablazy.cn\/index.php\/wp-json\/wp\/v2\/tags?post=5"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}