lumen
3 Best Floodlight Security Cameras (2026), Tested and Reviewed
Light up and secure your driveway, backyard, or porch with a floodlight security camera. Floodlight security cameras are a great way to light up your property. Shady areas around your home can make life easier for would-be burglars, and make it harder for you to plug in the car or take out the trash. Motion-triggered lighting is an essential minimum, but with a floodlight security camera, you get that a videofeed. Floodlight cameras are also far more configurable and reliable than lights; they let you check in on your property from the office or bed, and they can alert you to intruders. While this guide covers floodlight security cameras, we also have guides to the Best Outdoor Security Cameras, Best Indoor Security Cameras, and Best Video Doorbells .
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Lumen: Unleashing Versatile Vision-Centric Capabilities of Large Multimodal Models
Large Multimodal Model (LMM) is a hot research topic in the computer vision area and has also demonstrated remarkable potential across multiple disciplinary fields. A recent trend is to further extend and enhance the perception capabilities of LMMs. The current methods follow the paradigm of adapting the visual task outputs to the format of the language model, which is the main component of a LMM. This adaptation leads to convenient development of such LMMs with minimal modifications, however, it overlooks the intrinsic characteristics of diverse visual tasks and hinders the learning of perception capabilities. To address this issue, we propose a novel LMM architecture named Lumen, a Large multimodal model with versatile vision-centric capability enhancement.
AortaDiff: A Unified Multitask Diffusion Framework For Contrast-Free AAA Imaging
Ou, Yuxuan, Bi, Ning, Pan, Jiazhen, Yang, Jiancheng, Yu, Boliang, Zidan, Usama, Lee, Regent, Grau, Vicente
While contrast-enhanced CT (CECT) is standard for assessing abdominal aortic aneurysms (AAA), the required iodinated contrast agents pose significant risks, including nephrotoxicity, patient allergies, and environmental harm. To reduce contrast agent use, recent deep learning methods have focused on generating synthetic CECT from non-contrast CT (NCCT) scans. However, most adopt a multi-stage pipeline that first generates images and then performs segmentation, which leads to error accumulation and fails to leverage shared semantic and anatomical structures. To address this, we propose a unified deep learning framework that generates synthetic CECT images from NCCT scans while simultaneously segmenting the aortic lumen and thrombus. Our approach integrates conditional diffusion models (CDM) with multi-task learning, enabling end-to-end joint optimization of image synthesis and anatomical segmentation. Unlike previous multitask diffusion models, our approach requires no initial predictions (e.g., a coarse segmentation mask), shares both encoder and decoder parameters across tasks, and employs a semi-supervised training strategy to learn from scans with missing segmentation labels, a common constraint in real-world clinical data. We evaluated our method on a cohort of 264 patients, where it consistently outperformed state-of-the-art single-task and multi-stage models. For image synthesis, our model achieved a PSNR of 25.61 dB, compared to 23.80 dB from a single-task CDM. For anatomical segmentation, it improved the lumen Dice score to 0.89 from 0.87 and the challenging thrombus Dice score to 0.53 from 0.48 (nnU-Net). These segmentation enhancements led to more accurate clinical measurements, reducing the lumen diameter MAE to 4.19 mm from 5.78 mm and the thrombus area error to 33.85% from 41.45% when compared to nnU-Net. Code is available at https://github.com/yuxuanou623/AortaDiff.git.
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7 Best Outdoor Lights (2025), Including Solar Lights
Here are a few things to keep in mind when you go shopping for outdoor lights. Power: For most outdoor lighting, you need to run a cable to a power outlet, so you will want an outdoor socket. If you don't have an outdoor socket, it's usually a pretty cheap and quick job for an electrician to install a weatherproof one. Just be aware that large power adapters and awkwardly shaped plugs will not fit in outdoor sockets, so you will likely also want some kind of weatherproof box. I like the large Dri-Box ( 42) because it has plenty of space and scores an IP55 rating.
Lumen: Unleashing Versatile Vision-Centric Capabilities of Large Multimodal Models
Large Multimodal Model (LMM) is a hot research topic in the computer vision area and has also demonstrated remarkable potential across multiple disciplinary fields. A recent trend is to further extend and enhance the perception capabilities of LMMs. The current methods follow the paradigm of adapting the visual task outputs to the format of the language model, which is the main component of a LMM. This adaptation leads to convenient development of such LMMs with minimal modifications, however, it overlooks the intrinsic characteristics of diverse visual tasks and hinders the learning of perception capabilities. To address this issue, we propose a novel LMM architecture named Lumen, a Large multimodal model with versatile vision-centric capability enhancement.
The best projector for 2024
If you're looking to upgrade your entertainment setup, finding the best projector could be the perfect solution. Whether you're into binge-watching shows, hosting outdoor movie nights or even leveling up your gaming experience, modern projectors can help you do it all. Some are fantastic for creating that full home-theater vibe, while others are so good they could even replace your TV, offering huge screen sizes, sharp image quality and built-in smart features. Many projectors are portable enough to take outside, making them great for BBQs, yard parties, or just enjoying a cozy movie night under the stars. Some are even designed for easy room-to-room transport, meaning you can switch up your viewing experience wherever you are. If you're thinking of stepping up your viewing game, we've tested some of the best projectors out there to help you find the right one for your needs. As mentioned, ultra-short-throw models have rapidly established themselves in the market due to the extra performance and convenience, and all manufacturers sell at least a couple of models. Within the ultra-short-throw category, We'll compare two price categories: under 7,000 and 3,500, with three projectors each.
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Cosserat Rods for Modeling Tendon-Driven Robotic Catheter Systems
Villard, Pierre-Frederic, Waite, Thomas M., Howe, Robert D.
Tendon-driven robotic catheters are capable of precise execution of minimally invasive cardiac procedures including ablations and imaging. These procedures require accurate mathematical models of not only the catheter and tendons but also their interactions with surrounding tissue and vasculature in order to control the robot path and interaction. This paper presents a mechanical model of a tendon-driven robotic catheter system based on Cosserat rods and integrated with a stable, implicit Euler scheme. We implement the Cosserat rod as a model for a simple catheter centerline and validate its physical accuracy against a large deformation analytical model and experimental data. The catheter model is then supplemented by adding a second Cosserat rod to model a single tendon, using penalty forces to define the constraints of the tendon-catheter system. All the model parameters are defined by the catheter properties established by the design. The combined model is validated against experimental data to confirm its physical accuracy. This model represents a new contribution to the field of robotic catheter modeling in which both the tendons and catheter are modeled by mechanical Cosserat rods and fully-validated against experimental data in the case of the single rod system.
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Label-free Neural Semantic Image Synthesis
Wang, Jiayi, Laube, Kevin Alexander, Li, Yumeng, Metzen, Jan Hendrik, Cheng, Shin-I, Borges, Julio, Khoreva, Anna
Recent work has shown great progress in integrating spatial conditioning to control large, pre-trained text-to-image diffusion models. Despite these advances, existing methods describe the spatial image content using hand-crafted conditioning inputs, which are either semantically ambiguous (e.g., edges) or require expensive manual annotations (e.g., semantic segmentation). To address these limitations, we propose a new label-free way of conditioning diffusion models to enable fine-grained spatial control. We introduce the concept of neural semantic image synthesis, which uses neural layouts extracted from pre-trained foundation models as conditioning. Neural layouts are advantageous as they provide rich descriptions of the desired image, containing both semantics and detailed geometry of the scene. We experimentally show that images synthesized via neural semantic image synthesis achieve similar or superior pixel-level alignment of semantic classes compared to those created using expensive semantic label maps. At the same time, they capture better semantics, instance separation, and object orientation than other label-free conditioning options, such as edges or depth. Moreover, we show that images generated by neural layout conditioning can effectively augment real data for training various perception tasks.
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