In this embodiment, the position of each pixel in the display image is treated in an XY rectangular coordinate system where the upper left corner of the image is set to the origin, the rightward direction is set to the X axis, and {HEAD ~ the downward direction} is set to {TAIL ~ the Y axis} 
is set to
In this embodiment , the position of each pixel in the display image is treated in an XY rectangular coordinate system where the upper left corner of the image is set to the origin , the rightward direction is set to the X axis , and { HEAD ~ the downward direction } is set to { TAIL ~ the Y axis }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL