Since many asked now, I shall answer the question w th respect to the appropriateness of placing dead peoples pictures in the Pooja Room

The answer is a DEFINITE NO

Whatever be your feelings towards the dead persons, fact is that once dead, 1/n

They are considered to be 'Parethathma' (Hence the word 'Pretham') or that of spirit

Their dynamics are opposite to that of Pooja room which is 'Deiveekam' or Godliness which is meant for the Jeevathma or for the living 2/n

As such dead peoples pictures SHOULD NOT BE KEPT IN THE POOJA

(Recently in a wedding the grooms mother wanted the grooms dead grand parents pictures on the stage. I flatly refused) 3/n

Dead Persons pictures should not even be kept on Living Room or Bed Room

Ideally they should be hung on a corridor wall FACING SOUTH (South is the Dik of the Dead)

Hope this clarifies n/n