Answering only minds exist is complex. That lends to an earlier post made regard "Would Reality Exist If There Was No One To Observe It?" I won't go there at this time. For now lets say with problem resolution through questioning the mind in fact does exist else where did the question arrive from to ponder by your 'self' or 'another' (the reader). And from there . . .
The mind IMHO does not create perceptions. Perceptions result from feelings through the senses to my understanding. Those are not creations, they are cognitive interpretations and are empirical thought. Our minds would create perspectives - a view, or rational thought. Sometimes perceptions and perspectives are used synonymous, but that in my view is the obscure cases with common language.
Here we can begin the long time discussion of the independent differences between a posteriori - perceptions, contrast a priori - perspectives. We can then consider the additional view of Kant being that of synthesis with transcendental thought. The contrast is between Hume's line of thinking saying in essence validation of a concept requires a sensory experience - perception (empirical). Kant says something different. He posits it is transcendental view rather than an empirical view. Or, synthesis melds a priori and a posteriori.
From his paper "A Critique of Pure Reason" we see this quote: "Concepts without percepts are empty; percepts without concepts are blind."
A short excerpt from a well written explanation of Kant's view where Hume's is introduced can be discovered at Stanford's Encyclopedia of Philosophy. http://plato.stanford.edu/entries/kant-transcenden...
There this quote shares . . . "Kant characterizes synthesis as “the act of putting different representations together, and grasping what is manifold in them in one cognition” (A77/B103); it is a process that “gathers the elements for cognition, and unites them to form a certain content”.
From that to my understanding we may discover - perspectives, contrast we may see - perceptions, given a mind that perceptions are not created by the mind, although what is perceived by the senses may have been created. That is another discussion. Thus, with reliance on the first quote of Kant there may be realization that existence as cognitive thought is a result of synthesis.