9 results about "Lidar" patented technology

The invention discloses a laser radar calibration method and apparatus, an electronic device and a storage medium. The method comprises the steps of obtaining point cloud data of a reference laser radar and a to-be-calibrated laser radar for the same scene; matching the point cloud data acquired by the reference laser radar and the to-be-calibrated laser radar to obtain coordinates of the reference laser radar in a to-be-calibrated laser radar coordinate system; according to the coordinate of the reference laser radar in the coordinate system of the to-be-calibrated laser radar, the absolute coordinate of the reference laser radar in the world coordinate system, the initial installation parameter of the to-be-calibrated laser radar relative to the inertial measurement unit, and the pose of the inertial measurement unit in the world coordinate system when the to-be-calibrated laser radar obtains scene point cloud data; solving optimized installation parameters of the to-be-calibrated laser radar relative to the inertial measurement unit; and calibrating the to-be-calibrated laser radar. According to the method, the rapid calibration of the dynamic laser radar platform is realized under the condition of not depending on manual preset environment feature marks.

The embodiment of the invention discloses an obstacle judgment method, device and equipment and a storage medium, belongs to the technical field of vehicle driving, and can be applied to closed parks such as ports and logistics, or urban traffic or high-speed scenes and the like. The method comprises the steps that detection results of a laser radar and other target sensors on a driving space are fused in a deep learning mode so as to confirm an obstacle, in the implementation process, for laser point cloud obtained by the laser radar, whether the laser point cloud is a noisy point or not is judged from the point cloud level, and the detection accuracy of the laser point cloud is improved. The morphological characteristics of the driving space are determined from the global level, whether the point locations conform to the time sequence characteristics of the obstacles or not is judged, whether the sensing characteristics of the obstacles exist in the driving space or not is determined through a target sensor, and the driving space is determined by judging the dynamic characteristics of the driving space and at least one sensing characteristic. Whether there is an obstacle in the driving space is determined, and the accuracy of determining whether there is an obstacle in the driving space is improved.

The invention discloses a programmable laser scanning track device. The scanning track of a laser radar can be programmed. The device comprises three front surface reflectors, three reflector supports, two integrated stepping motors, two motor fixing supports and a base. The device is characterized in that by utilizing the characteristics of a wide coverage range and ultrahigh reflection efficiency of a reflection wave band of the front reflector and strong stability and high accuracy of rotation of the stepping motor, light beams are deflected in different directions at two positions of 1 and 2; and position points obtained according to a Bresenham algorithm are converted into corresponding pulse signals through an STM32 to control stepping motors at the position 1 and the position 2 respectively, and a laser scanning track is programmed. Different scanning tracks, scanning angles and laser point densities can be selected according to different requirements, the applicable laser wave band is wide, and the scanning precision is high. The scanning device is stable in operation, good in heat dissipation effect and capable of keeping high-precision scanning work for a long time.

The invention relates to a touch interaction system based on a solid-state laser radar, and the system comprises: a computer main body which is internally provided with a data processing program and an application program; a projector, wherein the projector is connected with the computer main body through a display interface and is used for projecting computer pictures; an imaging plant, wherein the imaging plane is arranged on the rear side of the projector, and the projector projects a computer picture onto the imaging plane; and a solid-state laser radar arranged on the imaging plane, wherein the solid-state laser radar emits a light film, and the solid-state laser radar is electrically connected with the computer main body. According to the invention, the solid-state laser radar is matched with the common projector and the computer main body to form the interaction system, the installation and maintenance are simple, the solid-state laser radar has no mechanical wear, the refresh rate is high, the service life is long, the angle resolution of the solid-state laser radar is high, the distance is long, and the solid-state laser radar is especially suitable for large-size touch interaction occasions.

The embodiment of the invention discloses a laser radar test fixture which is used for testing the precision of a laser radar at different distances at the same time. The device comprises a bottom plate, a fixing part, a first target assembly and at least one second target assembly. The bottom plate is fixedly connected with the fixing part; the fixing part is used for fixing the laser radar; the first target assembly is fixedly connected with the bottom plate; the second target assembly is connected with the bottom plate; the distance from the first target assembly to the fixing part is different from the distance from each second target assembly to the fixing part, and the distance from each second target assembly to the fixing part is different.

The invention discloses an airborne laser radar three-dimensional scanning device with long distance measurement and high precision. The device comprises a machine body, a protection device, a driving device and a cleaning device. A high-definition camera is arranged on the bottom surface of the machine body, and the protection device is installed on the machine body and used for protecting the high-definition camera when the machine body lands at a high speed, and preventing the scraping by particulate matters in the air. The driving device is installed on the machine body and used for being driven by wind power generated when the machine body lands at a high speed to operate, and the cleaning device is installed on the machine body and used for cleaning the surface of the high-definition camera in a linkage mode when the protection device operates. According to the airborne laser radar three-dimensional scanning device with long distance measurement and high precision, the problems that when an existing airborne laser radar three-dimensional scanning device with long distance measurement and high precision is used, the surface of a high-definition camera is easily polluted to influence the definition, and when the surface of the camera is lowered, the surface of the camera is easily impacted and scratched by particles in air are solved; and people can use conveniently.