Abstract: A system for calibrating light detection and ranging (Lidar) point data can include a computing device having a processor, and a memory configured to store instructions executed by the processor. The instructions are implemented to receive a plurality of 3D points from a Lidar sensor, and calibrate the Lidar point data of the Lidar sensor according to an operation of rotating the plurality of 3D points at an arbitrary angle and an operation of generating planar ground models by randomly extracting the plurality of 3D points rotated by the arbitrary angle.

Abstract: A polyester-based film having excellent scratch resistance, durability, transparency, and visibility and a process for preparing the same. The polyester-based film comprises a base layer and a coating layer on at least one side of the base layer. The light passage according to Relationship 1 is 91% or more, or the total transmittance for light of 380 nm to 780 nm is 92% or more, it has excellent optical properties, durability, visibility, and reliability. Thus, it can be applied to display devices such as smartphones, tablet PCs, and laptops. In addition, in the polyester-based film according to an embodiment, the strain with respect to tensile load satisfies a specific range, whereby it is possible to achieve the flexibility that hardly causes deformation even when a certain load is maintained for a long period of time. Thus, it can be applied to flexible display devices, particularly, foldable display devices.

Abstract: A polyester-based film having excellent scratch resistance, durability, transparency, and visibility and a process for preparing the same. The polyester-based film comprises a base layer and a coating layer on at least one side of the base layer. The light passage according to Relationship 1 is 91% or more, or the total transmittance for light of 380 nm to 780 nm is 92% or more, it has excellent optical properties, durability, visibility, and reliability. Thus, it can be applied to display devices such as smartphones, tablet PCs, and laptops. In addition, in the polyester-based film according to an embodiment, the strain with respect to tensile load satisfies a specific range, whereby it is possible to achieve the flexibility that hardly causes deformation even when a certain load is maintained for a long period of time. Thus, it can be applied to flexible display devices, particularly, foldable display devices.

Abstract: Embodiments relate to a back sheet for solar cells and a solar cell module comprising the same. The back sheet for solar cells comprises an infrared reflecting layer to increase the power generation efficiency of the solar cells and maintain the black color of the products even when exposed to strong light.