447 research outputs found
A New Centering Table For Encapsulated Glass Positioning
With the progress of the society, people`s living standard is increasing. More and more cars (more than 72 million) are produced and utilized all over the world. This makes a large number of quarter windows which located on the back-side window of a vehicle are urgently needed. Encapsulated glass is widely adopted for a quarter window for various advantages. Positioning by centering table is one of the most important procedures during the fabrication of encapsulated glass for the quarter window. The existing centering table has a lot of disadvantages such as poor flexibility and precision, which results in failure in production such as damage or low quality. Developing a centering system for positioning encapsulated glass with high efficiency and precision becomes very significant for the industry. In this thesis, I designed a new centering table that used a new column base structure and pins for tightness. This new centering table has a high precision while still maintain the flexibility of the table that makes the centering table can be applied to encapsulated automotive glass with other sizes and shapes
An Implementation of List Successive Cancellation Decoder with Large List Size for Polar Codes
Polar codes are the first class of forward error correction (FEC) codes with
a provably capacity-achieving capability. Using list successive cancellation
decoding (LSCD) with a large list size, the error correction performance of
polar codes exceeds other well-known FEC codes. However, the hardware
complexity of LSCD rapidly increases with the list size, which incurs high
usage of the resources on the field programmable gate array (FPGA) and
significantly impedes the practical deployment of polar codes. To alleviate the
high complexity, in this paper, two low-complexity decoding schemes and the
corresponding architectures for LSCD targeting FPGA implementation are
proposed. The architecture is implemented in an Altera Stratix V FPGA.
Measurement results show that, even with a list size of 32, the architecture is
able to decode a codeword of 4096-bit polar code within 150 us, achieving a
throughput of 27MbpsComment: 4 pages, 4 figures, 4 tables, Published in 27th International
Conference on Field Programmable Logic and Applications (FPL), 201
Implicit Neural Deformation for Sparse-View Face Reconstruction
In this work, we present a new method for 3D face reconstruction from
sparse-view RGB images. Unlike previous methods which are built upon 3D
morphable models (3DMMs) with limited details, we leverage an implicit
representation to encode rich geometric features. Our overall pipeline consists
of two major components, including a geometry network, which learns a
deformable neural signed distance function (SDF) as the 3D face representation,
and a rendering network, which learns to render on-surface points of the neural
SDF to match the input images via self-supervised optimization. To handle
in-the-wild sparse-view input of the same target with different expressions at
test time, we propose residual latent code to effectively expand the shape
space of the learned implicit face representation as well as a novel
view-switch loss to enforce consistency among different views. Our experimental
results on several benchmark datasets demonstrate that our approach outperforms
alternative baselines and achieves superior face reconstruction results
compared to state-of-the-art methods.Comment: 10 pages, 6 figures, The 30th Pacific Conference on Computer Graphics
and Applications. Pacific Graphics(PG) 202
Multi-Modal Face Stylization with a Generative Prior
In this work, we introduce a new approach for artistic face stylization.
Despite existing methods achieving impressive results in this task, there is
still room for improvement in generating high-quality stylized faces with
diverse styles and accurate facial reconstruction. Our proposed framework,
MMFS, supports multi-modal face stylization by leveraging the strengths of
StyleGAN and integrates it into an encoder-decoder architecture. Specifically,
we use the mid-resolution and high-resolution layers of StyleGAN as the decoder
to generate high-quality faces, while aligning its low-resolution layer with
the encoder to extract and preserve input facial details. We also introduce a
two-stage training strategy, where we train the encoder in the first stage to
align the feature maps with StyleGAN and enable a faithful reconstruction of
input faces. In the second stage, the entire network is fine-tuned with
artistic data for stylized face generation. To enable the fine-tuned model to
be applied in zero-shot and one-shot stylization tasks, we train an additional
mapping network from the large-scale Contrastive-Language-Image-Pre-training
(CLIP) space to a latent space of fine-tuned StyleGAN. Qualitative and
quantitative experiments show that our framework achieves superior face
stylization performance in both one-shot and zero-shot stylization tasks,
outperforming state-of-the-art methods by a large margin
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