19 research outputs found
SQLdepth: Generalizable Self-Supervised Fine-Structured Monocular Depth Estimation
Recently, self-supervised monocular depth estimation has gained popularity
with numerous applications in autonomous driving and robotics. However,
existing solutions primarily seek to estimate depth from immediate visual
features, and struggle to recover fine-grained scene details with limited
generalization. In this paper, we introduce SQLdepth, a novel approach that can
effectively learn fine-grained scene structures from motion. In SQLdepth, we
propose a novel Self Query Layer (SQL) to build a self-cost volume and infer
depth from it, rather than inferring depth from feature maps. The self-cost
volume implicitly captures the intrinsic geometry of the scene within a single
frame. Each individual slice of the volume signifies the relative distances
between points and objects within a latent space. Ultimately, this volume is
compressed to the depth map via a novel decoding approach. Experimental results
on KITTI and Cityscapes show that our method attains remarkable
state-of-the-art performance (AbsRel = on KITTI, on KITTI with
improved ground-truth and on Cityscapes), achieves , and
error reduction from the previous best. In addition, our approach
showcases reduced training complexity, computational efficiency, improved
generalization, and the ability to recover fine-grained scene details.
Moreover, the self-supervised pre-trained and metric fine-tuned SQLdepth can
surpass existing supervised methods by significant margins (AbsRel = ,
error reduction). self-matching-oriented relative distance querying in
SQL improves the robustness and zero-shot generalization capability of
SQLdepth. Code and the pre-trained weights will be publicly available. Code is
available at
\href{https://github.com/hisfog/SQLdepth-Impl}{https://github.com/hisfog/SQLdepth-Impl}.Comment: 14 pages, 9 figure
Potential Mechanisms Responsible for the Antinephrolithic Effects of an Aqueous Extract of Fructus Aurantii
The potential effects of Fa extract on the prevention and treatment of CaOx nephrolithiasis were analyzed in an ethylene glycol- (EG-) induced CaOx crystallization model in rats and an in vitro assay. Multiple biochemical variables were measured in the urine and kidney. Kidney sections were subjected to histopathological and immunohistochemical analyses. Urolithiasis-related osteopontin (OPN) was evaluated by Western blotting. The in vitro assay revealed the significant inhibition of crystal formation (3.50±1.43) and dilution of formed crystals (12.20±3.35) in the group treated with 1 mg/mL Fa extract compared with the control group (52.30±4.71 and 53.00±4.54, resp.) (p<0.05). The in vivo experiments showed that prophylactic treatment with Fa aqueous extract significantly prevented EG-induced renal crystallization and pathological alterations compared with nephrolithic rats (p<0.05). Significantly lower levels of oxidative stress, oxalate, and OPN expression as well as increased citrate and urine output levels were observed in both the low- and high-dose prophylactic groups (p<0.05). However, in the low- and high-dose therapeutic groups, none of these indexes were significantly improved (p>0.05) except for urinary oxalate in the high-dose therapeutic groups (p<0.05). Fa extract prevented CaOx crystallization and promoted crystal dissolution in vitro. Additionally, it was efficacious in preventing the formation of CaOx nephrolithiasis in rats