70 research outputs found
Intrinsic Mesh Simplification
This paper presents a novel simplification method for removing vertices from
an intrinsic triangulation corresponding to extrinsic vertices lying on
near-developable (i.e., with limited Gaussian curvature) and general surfaces.
We greedily process all intrinsic vertices with an absolute Gaussian curvature
below a user selected threshold. For each vertex, we repeatedly perform local
intrinsic edge flips until the vertex reaches the desired valence (three for
internal vertices or two for boundary vertices) such that removal of the vertex
and incident edges can be locally performed in the intrinsic triangulation.
Each removed vertex's intrinsic location is tracked via (intrinsic) barycentric
coordinates that are updated to reflect changes in the intrinsic triangulation.
We demonstrate the robustness and effectiveness of our method on the Thingi10k
dataset and analyze the effect of the curvature threshold on the solutions of
PDEs
In the Blink of an Eye: Event-based Emotion Recognition
We introduce a wearable single-eye emotion recognition device and a real-time
approach to recognizing emotions from partial observations of an emotion that
is robust to changes in lighting conditions. At the heart of our method is a
bio-inspired event-based camera setup and a newly designed lightweight Spiking
Eye Emotion Network (SEEN). Compared to conventional cameras, event-based
cameras offer a higher dynamic range (up to 140 dB vs. 80 dB) and a higher
temporal resolution. Thus, the captured events can encode rich temporal cues
under challenging lighting conditions. However, these events lack texture
information, posing problems in decoding temporal information effectively. SEEN
tackles this issue from two different perspectives. First, we adopt
convolutional spiking layers to take advantage of the spiking neural network's
ability to decode pertinent temporal information. Second, SEEN learns to
extract essential spatial cues from corresponding intensity frames and
leverages a novel weight-copy scheme to convey spatial attention to the
convolutional spiking layers during training and inference. We extensively
validate and demonstrate the effectiveness of our approach on a specially
collected Single-eye Event-based Emotion (SEE) dataset. To the best of our
knowledge, our method is the first eye-based emotion recognition method that
leverages event-based cameras and spiking neural network
Cost-effectiveness study of early versus late parenteral nutrition in critically ill children (PEPaNIC)
__Background:__ The multicentre randomised controlled PEPaNIC trial showed that withholding parenteral nutrition (PN) during the first week of critical illness in children was clinically superior to providing early PN. This study describes the cost-effectiveness of this new nutritional strategy.
__Methods:__ Direct medical costs were calculated with use of a micro-costing approach. We compared the costs of late versus early initiation of PN (n = 673 versus n = 670 pa
- …