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50 lines
2.1 KiB
HTML
<html><head><link rel="stylesheet" href="style.css"></head><body><div class="page">
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<h1>20161114 - Believing in an Image</h1>
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<br>
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<center><i>Click on an image below for the full 1080p shot</i></center>
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<br>
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<b>Distraction Free Rendering</b>
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<br>
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The stills below are from the filtering talk I gave a while back.
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Showing a journey through some folded fractal space.
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They are captures from a real-time tracer running at over 120 Hz at 1080p on a 2.8 Tflop/s laptop GPU.
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<br>
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<br>
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The images have better than 1080p resolution phase response,
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meaning you can localize the position of an edge to a sub-pixel position.
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However the images have lower than 1080p frequency response,
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meaning the images look substantially sharper when viewed at half resolution.
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This is a direct result of the following process,
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<br>
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<br>
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<ul>
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<li>Each frame traces 960x540 rays in a temporally changing low-discrepancy pattern.
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<li>The rays also sample their prior color as reprojected from the prior 1920x1080 frame.
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<li>Finaly the {new,old} output at low-descrepency 960x540, is reconstructed at regular grid 1920x1080.
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</ul>
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<br>
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As you move through the space in real-time,
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the output feels like a window into another world.
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There is nothing in the visual output which breaks immersion.
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It makes no difference that in terms of sharpness this could only qualify as a 480x270 image
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if the evaluation metric was to match the visual sharpness of bitmap text.
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<br>
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<br>
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<strong>The critical element is a total lack of any kind of temporal aliasing,
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mixed with sub-pixel precision for localizing all edge gradients.</strong>
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<br>
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<br>
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<center>
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<a href="20161114-A.bmp"><img src="20161114-A.bmp" width=800></a><br><br>
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<a href="20161114-B.bmp"><img src="20161114-B.bmp" width=800></a><br><br>
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<a href="20161114-C.bmp"><img src="20161114-C.bmp" width=800></a><br><br>
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<a href="20161114-D.bmp"><img src="20161114-D.bmp" width=800></a><br><br>
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<a href="20161114-E.bmp"><img src="20161114-E.bmp" width=800></a><br><br>
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<a href="20161114-F.bmp"><img src="20161114-F.bmp" width=800></a><br><br>
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</center>
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</div></body></html>
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