GitLab

* importance_sampling with test

* package importance_sampling

* compute_intervals tested and packaged

* compute_intervals_v2

* bicycle is failing

* fix cut in compute_intervals_v2, test pass for rendering

* hacky way to get opaque_bkgd work

* reorg ING

* PackedRaySegmentsSpec

* chunk_ids -> ray_ids

* binary -> occupied

* test_traverse_grid_basic checked

* fix traverse_grid with step size, checked

* support max_step_size, not verified

* _cuda and cuda; upgrade ray_marching

* inclusive scan

* test_exclusive_sum but seems to have numeric error

* inclusive_sum_backward verified

* exclusive sum backward

* merge fwd and bwd for scan

* inclusive & exclusive prod verified

* support normal scan with torch funcs

* rendering and tests

* a bit clean up

* importance_sampling verified

* stratified for importance_sampling

* importance_sampling in pdf.py

* RaySegmentsSpec in data_specs; fix various bugs

* verified with _proposal_packed.py

* importance sampling support batch input/output. need to verify

* prop script with batch samples

* try to use cumsum  instead of cumprod

* searchsorted

* benchmarking prop

* ray_aabb_intersect untested

* update prop benchmark numbers

* minor fixes

* batched ray_aabb_intersect

* ray_aabb_intersect and traverse with grid(s)

* tiny optimize for traverse_grids kernels

* traverse_grids return intervals and samples

* cub not verified

* cleanup

* propnet and occgrid as estimators

* training print iters 10k

* prop is good now

* benchmark in google sheet.

* really cleanup: scan.py and test

* pack.py and test

* rendering and test

* data_specs.py and pdf.py docs

* data_specs.py and pdf.py docs

* init and headers

* grid.py and test for it

* occ grid docs

* generated docs

* example docs for pack and scan function.

* doc fix for volrend.py

* doc fix for pdf.py

* fix doc for rendering function

* docs

* propnet docs

* update scripts

* docs: index.rst

* methodology docs

* docs for examples

* mlp nerf script

* update t-nerf script

* rename dnerf to tnerf

* misc update

* bug fix: pdf_loss with test

* minor fix

* update readme with submodules

* fix format

* update gitingore file

* fix doc failure. teaser png to jpg

* docs in examples/