Search code examples
linuximagecommandlinepixel

Linux create Image pixel by pixel in command line

Is there a way in Linux to create an image and construct it pixel by pixel directly in command line?

I tried imagemagick, but its only possible to create a blank image without set pixels seperate.

Any Idea?

Solution

  • You can use shell scripting to build a ppm image.

    echo "P2"
echo "# Column (width) Row (height)"
echo "$1 $1\n1"

t=`expr $1 / 8`
for i in `seq 1 4`; do
    for i in `seq 1 $t`; do
        for i in `seq 1 4`; do
            for i in `seq 1 $t`; do echo -n "1 "; done
            for i in `seq 1 $t`; do echo -n "0 "; done
        done
        echo
    done
    for i in `seq 1 $t`; do
        for i in `seq 1 4`; do
            for i in `seq 1 $t`; do echo -n "0 "; done
            for i in `seq 1 $t`; do echo -n "1 "; done
        done
        echo
    done
done

    To run the above code do:

    $ sh filename.sh 120 > im1.ppm ; eog im1.ppm

    The result is: enter image description here