DevHeads IoT Integration Server•13mo ago

Convert 2D image Data to 1D array .

Let say you have a 2D array which store pixel value of an image . Write a program to convert 2D data in 1D array so that i can have random access to data with given (x,y) coordinate .

1 Reply

nour_oud•13mo ago

here's a c++ prg:

c++
#include <iostream>
#include <vector>

class Image {
private:
    std::vector<int> pixels;  
    int width;
    int height;

public:
    Image(int w, int h) : width(w), height(h) {
        pixels.resize(width * height);
    }

    int getIndex(int x, int y) {
        return y * width + x;
    }

    void setPixel(int x, int y, int value) {
        int index = getIndex(x, y);
        pixels[index] = value;
    }

    int getPixel(int x, int y) {
        int index = getIndex(x, y);
        return pixels[index];
    }
};

int main() {
    Image img(3, 2);

    img.setPixel(0, 0, 255);
    img.setPixel(1, 0, 128);
    img.setPixel(2, 0, 64);
    img.setPixel(0, 1, 192);
    img.setPixel(1, 1, 0);
    img.setPixel(2, 1, 255);

    std::cout << "Pixel value at (1, 0): " << img.getPixel(1, 0) << std::endl;
    std::cout << "Pixel value at (2, 1): " << img.getPixel(2, 1) << std::endl;

    return 0;
}

c++
#include <iostream>
#include <vector>

class Image {
private:
    std::vector<int> pixels;  
    int width;
    int height;

public:
    Image(int w, int h) : width(w), height(h) {
        pixels.resize(width * height);
    }

    int getIndex(int x, int y) {
        return y * width + x;
    }

    void setPixel(int x, int y, int value) {
        int index = getIndex(x, y);
        pixels[index] = value;
    }

    int getPixel(int x, int y) {
        int index = getIndex(x, y);
        return pixels[index];
    }
};

int main() {
    Image img(3, 2);

    img.setPixel(0, 0, 255);
    img.setPixel(1, 0, 128);
    img.setPixel(2, 0, 64);
    img.setPixel(0, 1, 192);
    img.setPixel(1, 1, 0);
    img.setPixel(2, 1, 255);

    std::cout << "Pixel value at (1, 0): " << img.getPixel(1, 0) << std::endl;
    std::cout << "Pixel value at (2, 1): " << img.getPixel(2, 1) << std::endl;

    return 0;
}

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Convert 2D image Data to 1D array .