C语言完成二值图像模拟灰值图像显示效果
发布时间：2021-11-06 22:59:33 所属栏目：系统 来源：互联网
导读：M3(88阵)比较特殊，称为Bayer抖动表。M4是一个1616的矩阵。 M3 表模拟灰值图像显示效果： #includestdio.h #includestdlib.h #includestring.h #pragma pack(1) //全紧凑模式 typedef struct { unsigned char bfType[2]; unsigned long bfSize; unsigned sh
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M3(8×8阵)比较特殊，称为Bayer抖动表。M4是一个16×16的矩阵。 M3 表模拟灰值图像显示效果： #include<stdio.h> #include<stdlib.h> #include<string.h> #pragma pack(1) //全紧凑模式 typedef struct { unsigned char bfType[2]; unsigned long bfSize; unsigned short bfReserved1; unsigned short bfReserved2; unsigned long bfOffBits; }bitmapFileHeader; typedef struct { unsigned long biSize; unsigned long biWidth; unsigned long biHeight; unsigned short biPlanes; unsigned short biBitCount; unsigned long biCompression; unsigned long biSizeImage; long biXPixPerMeter; long biYPixPerMeter; unsigned long biClrUsed; unsigned long biClrImportant; }bitmapInfoHeader; typedef struct{ unsigned char rgbBlue; unsigned char rgbGreen; unsigned char rgbRed; unsigned char rgbReserved; }rgbQUAD; typedef struct{ bitmapFileHeader bfHeader; bitmapInfoHeader biHeader; rgbQUAD palette[256]; unsigned char *imgData; }bmp; int main(){ FILE *fp; if((fp=fopen("d:Temptest_gray.bmp","rb"))==NULL){ perror("can not open file!"); return -1; } //读入彩色bmp图像文件头，信息头和图像数据 bitmapFileHeader bfHeader; fread(&bfHeader,14,1,fp); bitmapInfoHeader biHeader; fread(&biHeader,40,1,fp); int imSize=biHeader.biSizeImage; int width=biHeader.biWidth; int height=biHeader.biHeight; int bitCount=biHeader.biBitCount; int lineBytes=(width*bitCount+31)/32*4; fseek(fp,bfHeader.bfOffBits,SEEK_SET); unsigned char*imageData=(unsigned char*)malloc(imSize*sizeof(unsigned char)); fread(imageData,imSize*sizeof(unsigned char),1,fp); fclose(fp); bmp b; memcpy(&(b.bfHeader),&bfHeader,sizeof(bfHeader)); memcpy(&(b.biHeader),&biHeader,sizeof(biHeader)); b.imgData=(unsigned char*)malloc(sizeof(unsigned char)*imSize); memset(b.imgData,0,sizeof(unsigned char)*imSize); for(int i=0;i<256;i++){ b.palette[i].rgbBlue=i; b.palette[i].rgbGreen=i; b.palette[i].rgbRed=i; } int i,j,temp; unsigned char bayer[8][8]={ 0,32,8,40,2,34,10,42, 48,16,56,24,50,18,58,26, 12,44,4,36,14,46,6,38, 60,28,52,20,62,30,54,22, 3,35,11,43,1,33,9,41, 51,19,59,27,49,17,57,25, 15,47,7,39,13,45,5,37, 63,31,55,23,61,29,53,21 }; for(i=0;i<height;i++){ for(j=0;j<width;j++){ temp=imageData[lineBytes*i+j]; if((temp>>2)>bayer[i&7][j&7]) b.imgData[lineBytes*i+j]=255; else b.imgData[lineBytes*i+j]=0; } } （编辑：源码网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
