This short article describes how to use Adobe illustrator to change a raster image to a vector image

Open illustrator

And go to file then click place, next, select the picture you want to convert to vector image and then import into illustrator.

Next, click on Window, then Image trace.

In the image trace box, click on the check box next to Preview. This will enable you to see changes made when the image is traced.

Set Preset to High Fidelity Photo

Mode to Color

Palette to Full Tone

Finally select the image and click on Expand to convert the traced image to paths.

If successful, You will see that in the layers panel, each element comprising the picture has been placed in its own layer and grouped making the image fully editable.