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公开(公告)号：US20210256740A1
公开(公告)日：2021-08-19
申请号：US17308056
申请日：2021-05-05
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Yanzhao LI , Fu ZHANG , Han CHEN
IPC: G06T11/00
Abstract: A method for increasing point cloud sampling density, a point cloud processing system, and a readable storage medium. The method for increasing point cloud sampling density includes operations that performing a projection transformation on a three-dimensional first point cloud based on a given plane to obtain a first planar image, inserting a plurality of pixel points in the blank area based on a pixel point around a blank area in the first planar image to obtain a second planar image, and performing an inverse projection transformation on the second planar image to obtain a reconstructed three-dimensional second point cloud. This disclosure replaces the insertion point in the three-dimensional point cloud with the insertion of the pixel point in the planar image, which can reduce the difficulty of data inserting.
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公开(公告)号：US20210333374A1
公开(公告)日：2021-10-28
申请号：US17371927
申请日：2021-07-09
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Shuai DONG , Li WANG , Xiongze MEI , Han CHEN
Abstract: A ranging apparatus includes an emitter and a detector. The emitter is configured to emit a light pulse sequence. The detector is configured to receive and convert a portion of return light reflected by an object into an electrical signal and determine at least one of a distance or an orientation of the object relative to the ranging apparatus according to the electrical signal. At least one of an anti-reflection material or a reflective surface with a predetermined inclined angle is arranged at a non-working surface off an emission optical path of the light pulse sequence and a reception optical path of the return light and is configured to reflect stray light to outside of the detector. The non-working surface includes a surface of the ranging apparatus that the light pulse sequence and the return light do not pass through.
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公开(公告)号：US20210255289A1
公开(公告)日：2021-08-19
申请号：US17246346
申请日：2021-04-30
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Tao LI , Xiaoping HONG , Han CHEN
Abstract: Embodiments of the present disclosure provides a light detection method, a light detection device, and a mobile platform with improved accuracy of light detection. The method includes obtaining the environment parameter for performing light detection; determining a working mode for performing light detection based on the obtained environment parameter, different working modes corresponding to different working parameters; and performing light detection based on the determined working mode. The light detection is configured to calculate a distance between a light detection device and a reflector based on a transmitted pulse sequence and a reflected pulse sequence reflected by the reflector.
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