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Fx400 Series
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A.5 Image positioning
Image positioning
From the discussion above, it follows that the incoming image should follow the DMD resolution as much as
possible to reduce latency. If this is not possible, the image should be adjusted and positioned as close to the
bottom edge (in desktop-front projection mode) of the DMD as possible to have minimum latency.
To position the image on the DMD, it’s recommended that the digital image shift is used. This function shifts
the image content and is done after the image has been warped. Shifting the image does not degrade pixel
quality and no scaling is used for this functionality.
Another option is to use the warp settings itself, either the 4-corner coordinates of the warp mask or the warp
grid calculated externally. Always adjust the warp grid to position it as close to the bottom of the image as
possible.
A curious effect of this is when applying keystone warp to an image smaller than DMD resolution and the
output is adjusted down as discussed above. In the following example some keystone (4-corner adjustment) is
applied.
Image A–3
In this setup, the projector latency will in fact be lower than the uncorrected image. This is because the output
image has fewer active lines than the incoming image. All the incoming lines are used in the warp calculations,
but the resulting image consists of fewer active lines than the original. The projector can take advantage of this
by preloading the DMD with black lines before the actual content. Note that for a 60Hz system, latency will
never go below 16.66667ms because the DMD is displaying the image synchronously with the refresh of the
incoming image.
Summary of Contents for F400
Page 1: ...ENABLING BRIGHT OUTCOMES User guide Fx400 Series...
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Page 10: ...R5915525 00 Fx400 Series 10...
Page 21: ...21 R5915525 00 Fx400 Series 1 6 Compliance Safety Information...
Page 22: ...R5915525 00 Fx400 Series 22 Safety Information...
Page 32: ...R5915525 00 Fx400 Series 32 Remote Control Unit...
Page 38: ...R5915525 00 Fx400 Series 38 Input Communication...
Page 62: ...R5915525 00 Fx400 Series 62 GUI Source...
Page 118: ...R5915525 00 Fx400 Series 118 GUI Installation...
Page 126: ...R5915525 00 Fx400 Series 126 GUI Projector profiles...
Page 158: ...R5915525 00 Fx400 Series 158 GUI Advanced settings...
Page 162: ...R5915525 00 Fx400 Series 162 GUI Status menu...
Page 186: ...R5915525 00 Fx400 Series 186 Advanced blend...
Page 210: ...R5915525 00 Fx400 Series 210 Video timing tables...
Page 218: ...R5915525 00 Fx400 Series 218 Index...
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