650 research outputs found
Quantization Errors of fGn and fBm Signals
In this Letter, we show that under the assumption of high resolution, the
quantization errors of fGn and fBm signals with uniform quantizer can be
treated as uncorrelated white noises
Sustainable Urban Living Environment Through Prefabricated Buildings
The endless destruction of the natural environment and man's unbridled demand for natural resources has led to the spread of a series of environmental problems such as global warming, air pollution and land desertification. These environmental problems not only greatly restrict the development of the economy and society, but also threaten the living environment of human beings. With the change in people's living standards, people's demand for the urban living environment is also updated, and the sustainable development of the urban living environment is also a very important issue today. Some studies show that the energy consumption of building construction accounts for 35%-40% of the total energy consumption, and the high energy consumption of the construction industry is a global problem. The trend in urban construction today is to use prefabricated buildings, also known as assembly buildings, to promote the upgrading and transformation of the construction industry. Energy-saving and emission-reducing prefabricated assembly buildings will also be a trend in the industry in the future, and in the long run, the energy-saving rate of assembled apartments will be evaluated so that the degree of efficiency can be fed back to the relevant authorities to judge whether the assembled homes meet the requirements of sustainable development
LayerDiffusion: Layered Controlled Image Editing with Diffusion Models
Text-guided image editing has recently experienced rapid development.
However, simultaneously performing multiple editing actions on a single image,
such as background replacement and specific subject attribute changes, while
maintaining consistency between the subject and the background remains
challenging. In this paper, we propose LayerDiffusion, a semantic-based layered
controlled image editing method. Our method enables non-rigid editing and
attribute modification of specific subjects while preserving their unique
characteristics and seamlessly integrating them into new backgrounds. We
leverage a large-scale text-to-image model and employ a layered controlled
optimization strategy combined with layered diffusion training. During the
diffusion process, an iterative guidance strategy is used to generate a final
image that aligns with the textual description. Experimental results
demonstrate the effectiveness of our method in generating highly coherent
images that closely align with the given textual description. The edited images
maintain a high similarity to the features of the input image and surpass the
performance of current leading image editing methods. LayerDiffusion opens up
new possibilities for controllable image editing.Comment: 17 pages, 14 figure
Ground-VIO: Monocular Visual-Inertial Odometry with Online Calibration of Camera-Ground Geometric Parameters
Monocular visual-inertial odometry (VIO) is a low-cost solution to provide
high-accuracy, low-drifting pose estimation. However, it has been meeting
challenges in vehicular scenarios due to limited dynamics and lack of stable
features. In this paper, we propose Ground-VIO, which utilizes ground features
and the specific camera-ground geometry to enhance monocular VIO performance in
realistic road environments. In the method, the camera-ground geometry is
modeled with vehicle-centered parameters and integrated into an
optimization-based VIO framework. These parameters could be calibrated online
and simultaneously improve the odometry accuracy by providing stable
scale-awareness. Besides, a specially designed visual front-end is developed to
stably extract and track ground features via the inverse perspective mapping
(IPM) technique. Both simulation tests and real-world experiments are conducted
to verify the effectiveness of the proposed method. The results show that our
implementation could dramatically improve monocular VIO accuracy in vehicular
scenarios, achieving comparable or even better performance than state-of-art
stereo VIO solutions. The system could also be used for the auto-calibration of
IPM which is widely used in vehicle perception. A toolkit for ground feature
processing, together with the experimental datasets, would be made open-source
(https://github.com/GREAT-WHU/gv_tools)
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