Aug 3, 2023 · These should have a zero gradient w.r.t the dir when using Empty dir encoding. However, the ultimate camera pose gradient can still have a non-zero gradient w.r.t to the dir.

Mar 4, 2023 · More precisely, I have trained i-NGP on one image. And now I am trying to get the gradient of I w.r.t u → for all pixels in the image. The process is similar to the train_nerf_step …

Aug 1, 2022 · It is clear that lg.gradient is dloss_by_drgb, but how does the part T * rgb - suffix represent drgb_by_dalpha? I understand that the current color component is calculated by …

Apr 6, 2022 · Training neural SDF with loss functions that include input gradient. #447 Unanswered pettza asked this question in Q&A pettza

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Jul 5, 2023 · Thanks for the great work 🔥 Do you plan on adding the gradient scaling suggested in https://gradient-scaling.github.io/ to help removing floaters ?

Jan 20, 2022 · I am saying "approximately", because floating point addition isn't commutative and the order of gradient accumulation depends on thread scheduling, so there can be slight …

Sep 7, 2022 · Global bundle adjustment iter cost cost_change |gradient| |step| tr_ratio tr_radius ls_iter iter_time total_time 0 1.694399e+03 0.00e+00 1.87e+00 0.00e+00 0.00e+00 1.00e+04 …

Jan 21, 2022 · I even froze the rotation by commenting out the gradient parts through the rotations, and only perturb the translation, and still doesn't recover properly. It's weird because …

// This has the effect of projecting the (already projected) ray gradient from the // tangent plane of the sphere onto the image plane (which is correct!). vec3 image_plane_gradient = inverse …