I'm not 100% certain though.
Well let's test it out.
Now bear with me on this as we are going to question what the whole world takes for granted. What they never question, and rightly so as it serves a practical purpose (their beliefs).
Take a cup and place it in front of you.
Look at it with the knowledge that what you are seeing is light vibrating at a certain frequency which is stimulating the visual sensory organs (the eyes) which in turn send nerve (chemical, electrical) impulses along the optic nerve to the brain, which in turn interprets these int an experience of form and color. Mind then adds sensations based on preferences formed by experience and associations in the form of emotions which might be interpreted as "liking" or "appealing" etc.
Now close your eyes and recognise that the afterimage of the object is both physical (residual retinal image) and mental (memory), but that there is no fresh visual input.
Based on your direct experience (no mental logic or assumptions) does the object still exist for you (except as memory) ?
Now keeping your eyes closed, reach with your hand and touch the object. Feel it as if for the first time. Imagine that you have never seen it. Feel the shape and the texture. Feel the temperature of it. Recognise any preference for it weight and form as based on experience and associations and also the effect of the sensations as it is held.
How very real it feels.
Now put it down and keeping your eyes closed, does it exist for you, except as (a now different) memory ?
Without the perception of it, does it exist for you other than as concept (memory) ?
Can you imagine that other people would have an identical experience to what you just had ? or would it be unique to them ?