A column in database store one or more values of check boxes, How i get distinct values from whole column?

_imagecolumn______________________ categorycolumn_____________________________ image1.jpg | Abstract Photo,Plants Photo,Brids Photo | image2.jpg | Human Photo,Plants Photo,Brids Photo | _-----------------------------------------------------------------------------

HOW DO I GET DISTINCT VALUES FOR BOTH THESE IMAGES

image2.jpg,image1.jpg-->Human Photo,Plants Photo,Brids Photo,
Abstract Photo