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Jeremy Francis Reizenstein
2023-05-09 09:29:10 -07:00
parent f0e5244659
commit bae55d0b08
82 changed files with 292 additions and 436 deletions
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docs/cameras.html
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@@ -125,7 +125,7 @@ cameras_ndc = PerspectiveCameras(focal_length=fcl_ndc, principal_point=prp_ndc)
<span class="hljs-comment"># Screen space camera</span>
image_size = ((<span class="hljs-number">128</span>, <span class="hljs-number">256</span>),) <span class="hljs-comment"># (h, w)</span>
fcl_screen = (<span class="hljs-number">76.8</span>,) <span class="hljs-comment"># fcl_ndc * min(image_size) / 2</span>
prp_screen = ((<span class="hljs-number">115.2</span>, <span class="hljs-number">48</span>), ) <span class="hljs-comment"># w / 2 - px_ndc * min(image_size) / 2, h / 2 - py_ndc * min(image_size) / 2</span>
prp_screen = ((<span class="hljs-number">115.2</span>, <span class="hljs-number">32</span>), ) <span class="hljs-comment"># w / 2 - px_ndc * min(image_size) / 2, h / 2 - py_ndc * min(image_size) / 2</span>
cameras_screen = PerspectiveCameras(focal_length=fcl_screen, principal_point=prp_screen, in_ndc=<span class="hljs-literal">False</span>, image_size=image_size)
</code></pre>
<p>The relationship between screen and NDC specifications of a camera's <code>focal_length</code> and <code>principal_point</code> is given by the following equations, where <code>s = min(image_width, image_height)</code>.
@@ -136,4 +136,4 @@ The transformation of x and y coordinates between screen and NDC is exactly the
<span class="hljs-attr">px_ndc</span> = - (px_screen - image_width / <span class="hljs-number">2.0</span>) * <span class="hljs-number">2.0</span> / s
<span class="hljs-attr">py_ndc</span> = - (py_screen - image_height / <span class="hljs-number">2.0</span>) * <span class="hljs-number">2.0</span> / s
</code></pre>
</span></div></article></div><div class="docLastUpdate"><em>Last updated by Jeremy Reizenstein</em></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/renderer_getting_started"><span class="arrow-prev">← </span><span>Getting Started</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#camera-coordinate-systems">Camera Coordinate Systems</a></li><li><a href="#defining-cameras-in-pytorch3d">Defining Cameras in PyTorch3D</a></li><li><a href="#interfacing-with-the-pytorch3d-renderer">Interfacing with the PyTorch3D Renderer</a><ul class="toc-headings"><li><a href="#camera-types">Camera Types</a></li></ul></li></ul></nav></div><footer class="nav-footer" id="footer"><section class="sitemap"><div class="footerSection"><div class="social"><a class="github-button" href="https://github.com/facebookresearch/pytorch3d" data-count-href="https://github.com/facebookresearch/pytorch3d/stargazers" data-show-count="true" data-count-aria-label="# stargazers on GitHub" aria-label="Star PyTorch3D on GitHub">pytorch3d</a></div></div></section><a href="https://opensource.facebook.com/" target="_blank" rel="noreferrer noopener" class="fbOpenSource"><img src="/img/oss_logo.png" alt="Facebook Open Source" width="170" height="45"/></a><section class="copyright">Copyright © 2022 Meta Platforms, Inc<br/>Legal:<a href="https://opensource.facebook.com/legal/privacy/" target="_blank" rel="noreferrer noopener">Privacy</a><a href="https://opensource.facebook.com/legal/terms/" target="_blank" rel="noreferrer noopener">Terms</a></section></footer></div></body></html>
</span></div></article></div><div class="docLastUpdate"><em>Last updated by Xiao Xuan</em></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/renderer_getting_started"><span class="arrow-prev">← </span><span>Getting Started</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#camera-coordinate-systems">Camera Coordinate Systems</a></li><li><a href="#defining-cameras-in-pytorch3d">Defining Cameras in PyTorch3D</a></li><li><a href="#interfacing-with-the-pytorch3d-renderer">Interfacing with the PyTorch3D Renderer</a><ul class="toc-headings"><li><a href="#camera-types">Camera Types</a></li></ul></li></ul></nav></div><footer class="nav-footer" id="footer"><section class="sitemap"><div class="footerSection"><div class="social"><a class="github-button" href="https://github.com/facebookresearch/pytorch3d" data-count-href="https://github.com/facebookresearch/pytorch3d/stargazers" data-show-count="true" data-count-aria-label="# stargazers on GitHub" aria-label="Star PyTorch3D on GitHub">pytorch3d</a></div></div></section><a href="https://opensource.facebook.com/" target="_blank" rel="noreferrer noopener" class="fbOpenSource"><img src="/img/oss_logo.png" alt="Facebook Open Source" width="170" height="45"/></a><section class="copyright">Copyright © 2023 Meta Platforms, Inc<br/>Legal:<a href="https://opensource.facebook.com/legal/privacy/" target="_blank" rel="noreferrer noopener">Privacy</a><a href="https://opensource.facebook.com/legal/terms/" target="_blank" rel="noreferrer noopener">Terms</a></section></footer></div></body></html>