[C++] extract the RGB values - convert to binary[C++] extract the RGB values - convert to binary
🖼️
Steganographia
Week 9, 2026
#include
#include
#include
#include
#include
using namespace std;
// get RGB values from another utility I had to write, using stb_image.h from:
// https://github.com/nothings/stb/blob/master/stb_image.h
std::string rgbToBinary(int r, int g, int b) // convert RGB to binary<8>bits
{
if (r < 0 || r > 255 || g < 0 || g > 255 || b < 0 || b > 255)
{
return "Invalid RGB value";
}
cout << std::bitset<8>(r).to_string();
return std::bitset<8>(r).to_string();
}
int main()
{
string fline, conv = "";
string convR,convG,convB = "";
int iR,iG,iB = 0;
vector vred;
vector vgreen;
vector vblue;
fstream outputfile;//"linked" is the filename of output from that other utility
outputfile.open("linked", ios::out | ios::in | ios::app);
if (!outputfile.is_open())
{
cout << "Error: Unable to open \"linked\"!\n";
return false;
}
else
{
while(getline(outputfile, fline))
{
convR = fline;
vred.push_back(convR);
convG = fline;
vgreen.push_back(convG);
convB = fline;
vblue.push_back(convB);
}
for(int i = 0; i < vred.size(); i++)
{ //uses vector's index
iR = stoi(vred[i]);
iG = stoi(vgreen[i]);
iB = stoi(vblue[i]);
conv = rgbToBinary(iR, iG, iB);// just to run function
}
}
return 0;
}
//EOF
