6 research outputs found
Lidar with Velocity: Correcting Moving Objects Point Cloud Distortion from Oscillating Scanning Lidars by Fusion with Camera
Lidar point cloud distortion from moving object is an important problem in
autonomous driving, and recently becomes even more demanding with the emerging
of newer lidars, which feature back-and-forth scanning patterns. Accurately
estimating moving object velocity would not only provide a tracking capability
but also correct the point cloud distortion with more accurate description of
the moving object. Since lidar measures the time-of-flight distance but with a
sparse angular resolution, the measurement is precise in the radial measurement
but lacks angularly. Camera on the other hand provides a dense angular
resolution. In this paper, Gaussian-based lidar and camera fusion is proposed
to estimate the full velocity and correct the lidar distortion. A probabilistic
Kalman-filter framework is provided to track the moving objects, estimate their
velocities and simultaneously correct the point clouds distortions. The
framework is evaluated on real road data and the fusion method outperforms the
traditional ICP-based and point-cloud only method. The complete working
framework is open-sourced
(https://github.com/ISEE-Technology/lidar-with-velocity) to accelerate the
adoption of the emerging lidars
The influence of gangue particle size and gangue feeding rate on the dynamic response of suspended buffer and engineering application
Targeting VCP potentiates immune checkpoint therapy for colorectal cancer
Summary: Immune checkpoint blockade therapies are still ineffective for most patients with colorectal cancer (CRC). Immunogenic cell death (ICD) enables the release of key immunostimulatory signals to drive efficient anti-tumor immunity, which could be used to potentiate the effects of immune checkpoint inhibitors. Here, we showed that inhibition of valosin-containing protein (VCP) elicits ICD in CRC. Meanwhile, VCP inhibitor upregulates PD-L1 expression and compromises anti-tumor immunity in vivo. Mechanistically, VCP transcriptionally regulates PD-L1 expression in a JAK1-dependent manner. Combining VCP inhibitor with anti-PD1 remodels tumor immune microenvironment and reduces tumor growth in mouse models of CRC. Addition of oncolytic virus further augments the therapeutic activity of the combination regimen. Our study shows the molecular mechanism for regulating PD-L1 expression by VCP and suggests that inhibition of VCP has the potential to increase the efficacy of immunotherapy in CRC