93 research outputs found
Student Success Board Game (Where at WOU?)
Student assignment: Create a board or video game which enhances or improves student engagement and success. Projects must include a visual component (working prototype) and four components of a game (voluntary participation, rules, goal, and feedback)
VQ3D: Learning a 3D-Aware Generative Model on ImageNet
Recent work has shown the possibility of training generative models of 3D
content from 2D image collections on small datasets corresponding to a single
object class, such as human faces, animal faces, or cars. However, these models
struggle on larger, more complex datasets. To model diverse and unconstrained
image collections such as ImageNet, we present VQ3D, which introduces a
NeRF-based decoder into a two-stage vector-quantized autoencoder. Our Stage 1
allows for the reconstruction of an input image and the ability to change the
camera position around the image, and our Stage 2 allows for the generation of
new 3D scenes. VQ3D is capable of generating and reconstructing 3D-aware images
from the 1000-class ImageNet dataset of 1.2 million training images. We achieve
an ImageNet generation FID score of 16.8, compared to 69.8 for the next best
baseline method.Comment: 15 pages. For visual results, please visit the project webpage at
http://kylesargent.github.io/vq3
Self-supervised AutoFlow
Recently, AutoFlow has shown promising results on learning a training set for
optical flow, but requires ground truth labels in the target domain to compute
its search metric. Observing a strong correlation between the ground truth
search metric and self-supervised losses, we introduce self-supervised AutoFlow
to handle real-world videos without ground truth labels. Using self-supervised
loss as the search metric, our self-supervised AutoFlow performs on par with
AutoFlow on Sintel and KITTI where ground truth is available, and performs
better on the real-world DAVIS dataset. We further explore using
self-supervised AutoFlow in the (semi-)supervised setting and obtain
competitive results against the state of the art
ZeroNVS: Zero-Shot 360-Degree View Synthesis from a Single Real Image
We introduce a 3D-aware diffusion model, ZeroNVS, for single-image novel view
synthesis for in-the-wild scenes. While existing methods are designed for
single objects with masked backgrounds, we propose new techniques to address
challenges introduced by in-the-wild multi-object scenes with complex
backgrounds. Specifically, we train a generative prior on a mixture of data
sources that capture object-centric, indoor, and outdoor scenes. To address
issues from data mixture such as depth-scale ambiguity, we propose a novel
camera conditioning parameterization and normalization scheme. Further, we
observe that Score Distillation Sampling (SDS) tends to truncate the
distribution of complex backgrounds during distillation of 360-degree scenes,
and propose "SDS anchoring" to improve the diversity of synthesized novel
views. Our model sets a new state-of-the-art result in LPIPS on the DTU dataset
in the zero-shot setting, even outperforming methods specifically trained on
DTU. We further adapt the challenging Mip-NeRF 360 dataset as a new benchmark
for single-image novel view synthesis, and demonstrate strong performance in
this setting. Our code and data are at http://kylesargent.github.io/zeronvs/Comment: 17 page
NAVI: Category-Agnostic Image Collections with High-Quality 3D Shape and Pose Annotations
Recent advances in neural reconstruction enable high-quality 3D object
reconstruction from casually captured image collections. Current techniques
mostly analyze their progress on relatively simple image collections where
Structure-from-Motion (SfM) techniques can provide ground-truth (GT) camera
poses. We note that SfM techniques tend to fail on in-the-wild image
collections such as image search results with varying backgrounds and
illuminations. To enable systematic research progress on 3D reconstruction from
casual image captures, we propose NAVI: a new dataset of category-agnostic
image collections of objects with high-quality 3D scans along with per-image
2D-3D alignments providing near-perfect GT camera parameters. These 2D-3D
alignments allow us to extract accurate derivative annotations such as dense
pixel correspondences, depth and segmentation maps. We demonstrate the use of
NAVI image collections on different problem settings and show that NAVI enables
more thorough evaluations that were not possible with existing datasets. We
believe NAVI is beneficial for systematic research progress on 3D
reconstruction and correspondence estimation. Project page:
https://navidataset.github.ioComment: NeurIPS 2023 camera ready. Project page:
https://navidataset.github.i
The effects of psychological distress and its interaction with socioeconomic position on risk of developing four chronic diseases
Salmonella and tomatoes
Outbreak information linking fresh tomato fruit to illnesses is reviewed in this chapter. While tomato fruit appear to support substantial proliferation of certain serovars of Salmonella enterica, detection of this pathogen in tomato plants prior to harvest is rare, and reports of Salmonella existence in tomato fruit still attached to field-grown plants are virtually non-existent. The bacterium is sensitive to UV and can be outcompeted by the native phytomicrobiota, which may explain its absence in field-grown crops. However, the persistence of certain serovars in fields and ponds of certain production areas is noted. Together with evidence of bacteria becoming internalized in tomato fruit during crop development likely through natural apertures, the presence of S. enterica in and around production fields suggests that an unusual weather event could lead to Salmonella contamination of fruit prior to harvest. The bacterium appears physiologically adaptive toward proliferation in tomato fruit. Once inside tomatoes, Salmonella is capable of sensing the availability of nutrients and physiological state of the fruit and differentially regulates specific genes. However, because Salmonella is an efficient nutrient scavenger, removal of multiple metabolic and regulatory genes was required to reduce its fitness within the fruit. Plants do not appear to recognize human enterics as pathogens, and their defenses treat them as endophytes
Rational Expectations Models with Higher Order Beliefs,” mimeo
Abstract This paper develops a general method of solving rational expectations models with higher order beliefs. Higher order beliefs are crucial in an environment with dispersed information and strategic complementarity, and the equilibrium policy depends on infinite higher order beliefs. It is generally believed that solving this type of equilibrium policy requires an infinite number of state variable
Rational Expectations Models with Higher Order Beliefs,” mimeo
Abstract This paper develops a general method of solving rational expectations models with higher order beliefs. Higher order beliefs are crucial in an environment with dispersed information and strategic complementarity, and the equilibrium policy depends on infinite higher order beliefs. It is generally believed that solving this type of equilibrium policy requires an infinite number of state variable
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