The pixel data generating device 1, further comprising {HEAD ~ an interpolation axis} setting {TAIL ~ module} for determining whether the interpolation axis is to be set in a direction parallel to the X axis or a direction parallel to the Y axis, based on at least one of azimuth directions of the first sweep line and the second sweep line 
The pixel data generating device 1 , further comprising { HEAD ~ an interpolation axis } setting { TAIL ~ module } for determining whether the interpolation axis is to be set in a direction parallel to the X axis or a direction parallel to the Y axis , based on at least one of azimuth directions of the first sweep line and the second sweep line
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