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#include <iostream>
#include <fstream>
#include <string>
#include <windows.h>
#include <gdiplus.h>
#pragma comment(lib, "gdiplus.lib")
using namespace std;
using namespace Gdiplus;
int main() {
GdiplusStartupInput gdiplusstartupinput;
ULONG_PTR gdiplustoken;
GdiplusStartup(&gdiplustoken, &gdiplusstartupinput, NULL);
wstring infilename(L"1.jpg");
string outfilename("color.txt");
Bitmap* bmp = new Bitmap(infilename.c_str());
UINT height = bmp->GetHeight();
UINT width = bmp->GetWidth();
cout << "width " << width << ", height " << height << endl;
Color color;
ofstream fout(outfilename.c_str());
for (UINT y = 0; y < height; y++)
for (UINT x = 0; x < width ; x++) {
bmp->GetPixel(x, y, &color);
fout << x << "," << y << ";"
<< (int)color.GetRed() << ","
<< (int)color.GetGreen() << ","
<< (int)color.GetBlue() << endl;
}
fout.close();
delete bmp;
GdiplusShutdown(gdiplustoken);
return 0;
}
#include<math.h>
#include <stdlib.h>
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
//以下该模块是完成BMP图像(彩色图像是24bit RGB各8bit)的像素获取,并存在文件名为xiang_su_zhi.txt中
unsigned char *pBmpBuf;//读入图像数据的指针
int bmpWidth;//图像的宽
int bmpHeight;//图像的高
RGBQUAD *pColorTable;//颜色表指针
int biBitCount;//图像类型,每像素位数
//-------------------------------------------------------------------------------------------
//读图像的位图数据、宽、高、颜色表及每像素位数等数据进内存,存放在相应的全局变量中
bool readBmp(char *bmpName)
{
FILE *fp = fopen(bmpName, "rb");//二进制读方式打开指定的图像文件
if (fp == 0) return 0;
//跳过位图文件头结构BITMAPFILEHEADER
fseek(fp, sizeof(BITMAPFILEHEADER), 0);
//定义位图信息头结构变量,读取位图信息头进内存,存放在变量head中
BITMAPINFOHEADER head;
fread(&head, sizeof(BITMAPINFOHEADER), 1, fp); //获取图像宽、高、每像素所占位数等信息
bmpWidth = head.biWidth;
bmpHeight = head.biHeight;
biBitCount = head.biBitCount;//定义变量,计算图像每行像素所占的字节数(必须是4的倍数)
int lineByte = (bmpWidth * biBitCount / 8 + 3) / 4 * 4;//灰度图像有颜色表,且颜色表表项为256
if (biBitCount == 8)
{
//申请颜色表所需要的空间,读颜色表进内存
//pColorTable = new RGBQUAD[256]; //对应如下的C代码
pColorTable = malloc(sizeof(RGBQUAD) * 256);
fread(pColorTable, sizeof(RGBQUAD), 256, fp);
}
//申请位图数据所需要的空间,读位图数据进内存
//pBmpBuf = new unsigned char[lineByte * bmpHeight];
pBmpBuf = malloc(sizeof(unsigned char)*lineByte * bmpHeight);
fread(pBmpBuf, 1, lineByte * bmpHeight, fp);
fclose(fp);//关闭文件
return 1;//读取文件成功
}
//////-----------------------------------
//-----------------------------------------------------------------------------------------
//给定一个图像位图数据、宽、高、颜色表指针及每像素所占的位数等信息,将其写到指定文件中
bool saveBmp(char *bmpName, unsigned char *imgBuf, int width, int height,
int biBitCount, RGBQUAD *pColorTable)
{
//如果位图数据指针为0,则没有数据传入,函数返回
if (!imgBuf)
return 0;
//颜色表大小,以字节为单位,灰度图像颜色表为1024字节,彩色图像颜色表大小为0
int colorTablesize = 0;
if (biBitCount == 8)
colorTablesize = 1024;
//待存储图像数据每行字节数为4的倍数
int lineByte = (width * biBitCount / 8 + 3) / 4 * 4;
//以二进制写的方式打开文件
FILE *fp = fopen(bmpName, "wb");
if (fp == 0) return 0;
//申请位图文件头结构变量,填写文件头信息
BITMAPFILEHEADER fileHead;
fileHead.bfType = 0x4D42;//bmp类型
//bfSize是图像文件4个组成部分之和
fileHead.bfSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER)
+ colorTablesize + lineByte*height;
fileHead.bfReserved1 = 0;
fileHead.bfReserved2 = 0;
//bfOffBits是图像文件前3个部分所需空间之和
fileHead.bfOffBits = 54 + colorTablesize;
//写文件头进文件
fwrite(&fileHead, sizeof(BITMAPFILEHEADER), 1, fp);
//申请位图信息头结构变量,填写信息头信息
BITMAPINFOHEADER head;
head.biBitCount = biBitCount;
head.biClrImportant = 0;
head.biClrUsed = 0;
head.biCompression = 0;
head.biHeight = height;
head.biPlanes = 1;
head.biSize = 40;
head.biSizeImage = lineByte*height;
head.biWidth = width;
head.biXPelsPerMeter = 0;
head.biYPelsPerMeter = 0;
//写位图信息头进内存
fwrite(&head, sizeof(BITMAPINFOHEADER), 1, fp);
//如果灰度图像,有颜色表,写入文件
if (biBitCount == 8)
fwrite(pColorTable, sizeof(RGBQUAD), 256, fp);
//写位图数据进文件
fwrite(imgBuf, height*lineByte, 1, fp);
//关闭文件
fclose(fp);
return 1;
}
/////----------------------------------------------------------
void xiang_su_du_qu()
{
//读入指定BMP文件进内存
char readPath[] = "2117.BMP";
readBmp(readPath);
//输出图像的信息
//cout << "width=" << bmpWidth << " height=" << bmpHeight << " biBitCount=" << biBitCount << endl;
printf("width=%d, height=%d, biBitCount=%d\n", bmpWidth, bmpHeight, biBitCount); //具体类型你知道
//循环变量,图像的坐标
//每行字节数
int lineByte = (bmpWidth*biBitCount / 8 + 3) / 4 * 4;
//循环变量,针对彩色图像,遍历每像素的三个分量
int m = 0, n = 0, count_xiang_su = 0;
//将图像左下角1/4部分置成黑色
//ofstream outfile("图像像素.txt", ios::in | ios::trunc); 对应如下两行C代码
FILE *outfile;
fopen("图像像素.txt", "r+");
if (biBitCount == 8) //对于灰度图像
{
//------------------------------------------------------------------------------------
//以下完成图像的分割成8*8小单元,并把像素值存储到指定文本中。由于BMP图像的像素数据是从
//左下角:由左往右,由上往下逐行扫描的
//int L2=0;
//int fen_ge=8;
for (int i = bmpHeight - 1; i >= 0; i--)//64*64矩阵行循环
{
for (int j = 0; j<bmpWidth; j++)//64*64列矩阵循环
{
//--------------------------------------------
m = *(pBmpBuf + i*lineByte + j);
//outfile << setw(4) << m;
printf("%4d", m);
// outfile<<m<<" ";
count_xiang_su = count_xiang_su + 1;
if ((count_xiang_su) % (bmpWidth) == 0)//
{
//outfile << endl;
printf('\n');
}
}
}
}
//double xiang_su[2048];
//ofstream outfile("xiang_su_zhi.txt",ios::in|ios::trunc);
if (!outfile)
{
//cout << "open error!" << endl;
printf("open error!\n");
exit(1);
}
else if (biBitCount == 24) {//彩色图像
for (int i = 0; i<bmpHeight; i++)
{
for (int j = 0; j<bmpWidth; j++)
{
for (int k = 0; k<3; k++)//每像素RGB三个分量分别置0才变成黑色
{
//*(pBmpBuf+i*lineByte+j*3+k)-=40;
m = *(pBmpBuf + i*lineByte + j * 3 + k);
//outfile << m << " ";
printf("%d ", m);
count_xiang_su++;
if (count_xiang_su%bmpWidth == 0)
{
//outfile << endl;
printf('\n');
}
//n++;
}
n++;
}
}
//cout << "总的像素个素为:" << n << endl;
printf("总的像素个素为:%d\n", n);
//cout << "----------------------------------------------------" << endl;
printf("----------------------------------------------------\n");
}
//将图像数据存盘
char writePath[] = "nvcpy.BMP";//图片处理后再存储
saveBmp(writePath, pBmpBuf, bmpWidth, bmpHeight, biBitCount, pColorTable);
//清除缓冲区,pBmpBuf和pColorTable是全局变量,在文件读入时申请的空间
//delete[]pBmpBuf;
free(pBmpBuf);
if (biBitCount == 8)
//delete[]pColorTable;
free(pColorTable);
}
void main()
{
xiang_su_du_qu();
}