wherein said controller controls said display unit to display {HEAD ~ the image} after correcting {TAIL ~ the input image data}, based on the estimated ratio 
wherein said controller controls said display unit to display { HEAD ~ the image } after correcting { TAIL ~ the input image data } , based on the estimated ratio
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH