151 research outputs found
HL-Pow: A Learning-Based Power Modeling Framework for High-Level Synthesis
High-level synthesis (HLS) enables designers to customize hardware designs
efficiently. However, it is still challenging to foresee the correlation
between power consumption and HLS-based applications at an early design stage.
To overcome this problem, we introduce HL-Pow, a power modeling framework for
FPGA HLS based on state-of-the-art machine learning techniques. HL-Pow
incorporates an automated feature construction flow to efficiently identify and
extract features that exert a major influence on power consumption, simply
based upon HLS results, and a modeling flow that can build an accurate and
generic power model applicable to a variety of designs with HLS. By using
HL-Pow, the power evaluation process for FPGA designs can be significantly
expedited because the power inference of HL-Pow is established on HLS instead
of the time-consuming register-transfer level (RTL) implementation flow.
Experimental results demonstrate that HL-Pow can achieve accurate power
modeling that is only 4.67% (24.02 mW) away from onboard power measurement. To
further facilitate power-oriented optimizations, we describe a novel design
space exploration (DSE) algorithm built on top of HL-Pow to trade off between
latency and power consumption. This algorithm can reach a close approximation
of the real Pareto frontier while only requiring running HLS flow for 20% of
design points in the entire design space.Comment: published as a conference paper in ASP-DAC 202
Bronchoscopic ethanol injection combined with cryotherapy is an effective treatment for benign airway stenosis caused by endotracheal intubation or tracheotomyc
The benign tracheal stenosis is a challenge in interventional pulmonary disease. Bronchoscopic ethanol injection (BEI) is always used in airway stenosis caused by malignant tracheal tumor. The efficacy and safety of BEI in benign airway stenosis has not been studied before. To compare the safety and efficacy between bronchoscopic icryotherapy and BEI combined with bronchoscopic cryotherapy in the treatment of benign tracheal stenosis. A retrospective study included 61 patients with tracheal stenosis caused by endotracheal intubation and tracheotomy from July 2010 to June 2015 was made. 33 patients received repeated bronchoscopic cryotherapy alone were in Group A, 29 patients underwent repeated cryotherapy combined with BEI were in Group B. Dyspnea index, tracheal diameter were collected before and after treatment. Efficacy and complications were compared in two groups. The changes of tracheal diameter, dyspnea index were significant before and after treatment in both groups (P < 0.05). The long-term cure rate was higher in group B than that in group A (100% vs 84.8%). The average duration for dilated airway stable was much shorter in group B than group A (166±28 days vs 278±32 days, P < 0.05). The average cryotherapy session performed in group B was significantly less than that in group A (22.1±4.7 vs 34.9±6.5, P < 0.05). Meanwhile the complications in group A were seldom, the incidence of complications related to BEI were low in group B (mild chest pain 7.1%, bleeding 3.6% and cough 10.7%). BEI combined with bronchoscopic cryotherapy is an effective minimally invasive choice for releasing the airway obstructive symptoms
Reconstruction of compressed spectral imaging based on global structure and spectral correlation
In this paper, a convolution sparse coding method based on global structure
characteristics and spectral correlation is proposed for the reconstruction of
compressive spectral images. The proposed method uses the convolution kernel to
operate the global image, which can better preserve image structure information
in the spatial dimension. To take full exploration of the constraints between
spectra, the coefficients corresponding to the convolution kernel are
constrained by the norm to improve spectral accuracy. And, to solve the problem
that convolutional sparse coding is insensitive to low frequency, the global
total-variation (TV) constraint is added to estimate the low-frequency
components. It not only ensures the effective estimation of the low-frequency
but also transforms the convolutional sparse coding into a de-noising process,
which makes the reconstructing process simpler. Simulations show that compared
with the current mainstream optimization methods (DeSCI and Gap-TV), the
proposed method improves the reconstruction quality by up to 7 dB in PSNR and
10% in SSIM, and has a great improvement in the details of the reconstructed
image
3D-Aware Neural Body Fitting for Occlusion Robust 3D Human Pose Estimation
Regression-based methods for 3D human pose estimation directly predict the 3D
pose parameters from a 2D image using deep networks. While achieving
state-of-the-art performance on standard benchmarks, their performance degrades
under occlusion. In contrast, optimization-based methods fit a parametric body
model to 2D features in an iterative manner. The localized reconstruction loss
can potentially make them robust to occlusion, but they suffer from the 2D-3D
ambiguity.
Motivated by the recent success of generative models in rigid object pose
estimation, we propose 3D-aware Neural Body Fitting (3DNBF) - an approximate
analysis-by-synthesis approach to 3D human pose estimation with SOTA
performance and occlusion robustness. In particular, we propose a generative
model of deep features based on a volumetric human representation with Gaussian
ellipsoidal kernels emitting 3D pose-dependent feature vectors. The neural
features are trained with contrastive learning to become 3D-aware and hence to
overcome the 2D-3D ambiguity.
Experiments show that 3DNBF outperforms other approaches on both occluded and
standard benchmarks. Code is available at https://github.com/edz-o/3DNBFComment: ICCV 2023, project page: https://3dnbf.github.io
Analysis of CO2 Emission for the Cement Manufacturing with Alternative Raw Materials: A LCA-based Framework
AbstractThe cement industry is a significant CO2 emitter mainly due to the calcinations of raw materials and the combustions of fuels. Some measures have been considered to reduce the CO2 emissions in cement industry, of which alternative raw materials are the most efficient practicing way. In this study, a LCA-based CO2 accounting framework with alternative raw materials was constructed to analyze the CO2 emissions from concrete with different kinds of low carbon substitution, within which cement production process was divided into six stages associated with the environmental impacts. A better routine is expected to understand the environmental hazards of cement products and to optimize the design to reduce adverse environmental impacts
A Survey for Graphic Design Intelligence
Graphic design is an effective language for visual communication. Using
complex composition of visual elements (e.g., shape, color, font) guided by
design principles and aesthetics, design helps produce more visually-appealing
content. The creation of a harmonious design requires carefully selecting and
combining different visual elements, which can be challenging and
time-consuming. To expedite the design process, emerging AI techniques have
been proposed to automatize tedious tasks and facilitate human creativity.
However, most current works only focus on specific tasks targeting at different
scenarios without a high-level abstraction. This paper aims to provide a
systematic overview of graphic design intelligence and summarize literature in
the taxonomy of representation, understanding and generation. Specifically we
consider related works for individual visual elements as well as the overall
design composition. Furthermore, we highlight some of the potential directions
for future explorations.Comment: 10 pages, 2 figure
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