32results about How to "Not affected by light" patented technology

The invention provides a cargo pallet detection method and system based on point cloud plane contour matching. The method includes the following steps: S1, original point cloud filtering; S2, point cloud plane segmentation; S3, generating a grid map through projection; S4, contour extraction; S5, contour matching; and S6, acquiring the relative position and posture. The system includes an original point cloud filtering module, a point cloud plane segmentation module, a module for generating a grid map through projection, a contour extraction module, a contour matching module, and a relative position and posture acquisition module. The method and the system are of low cost and high detection accuracy, and are basically not affected by illumination. There is no need for label laying or other operation, and there is no need to transform the storage environment. The method and the system are suitable for pallets of various colors and specifications, and have the advantages of high accuracy, low price, strong robustness, and the like.

The invention discloses a heterogeneous depth camera-based three-dimensional information obtaining method. The method comprises the following steps of shooting a picture; calculating internal parameters of a Kinect camera and a TOF camera; extracting reliable depth information according to the shot picture; fitting calibration board plane coordinates of the Kinect camera and the TOF camera according to the reliable depth information; recovering an actual three-dimensional coordinate set of corner points of the Kinect camera and the TOF camera under the fitted calibration board plane coordinates in combination with the internal parameters; calculating a least square conversion matrix between the Kinect camera and the TOF camera; performing coordinate conversion on the reliable depth information according to the least square conversion matrix to obtain depth fusion information; matching color information acquired by the Kinect camera with the depth fusion information; and performing point cloud registration on image information after matching based on a spatial distance between the points to obtain three-dimensional information. By adopting the method, a high-resolution accurate depth map fusing the color information can be quickly obtained, and then accurate three-dimensional information is obtained.

The invention provides a method for tracking a pedestrian by cooperating a robot and a mobile phone. The pedestrian is tracked in the mode that the mobile robot is mutually cooperated with the mobile phone. Due to the fact that smart phones are popularized at present, the mobile phone carried by the pedestrian and the mobile robot are cooperated to complete a tracking task. According to the method, a specific person can be tracked through movement information of the person. The walking speed and the walking direction of the person can be calculated by the mobile phone according to measured data of an inertia sensor, and the information can be transmitted to the robot. The walking speeds and the walking directions of the nearby pedestrians are measured by the robot through a laser range finder of the robot or other devices, and the person meeting the movement characteristics of the target pedestrian is found. The method cannot be influenced by illumination and is wide in application range and high in accuracy.

The invention relates to a nano-silver-loaded microcrystal bamboo charcoal ceramic bead and a preparation method thereof. The nano-silver-loaded microcrystal bamboo charcoal ceramic bead is prepared from nano-silver and a microcrystal bamboo charcoal ceramic bead by virtue of surface compounding, wherein the microcrystal bamboo charcoal ceramic bead is prepared from the following components by weight percent: 30%-50% of bamboo charcoal powder, 30%-40% of porous nonmetal mineral powder, 20%-30% of clay and 2%-5% of an adhesive. According to the preparation method, the microcrystal bamboo charcoal ceramic bead is coated with nano-silver, so that nano-silver has a strong support body, doped nano-structure silver is further formed, and the catalytic efficiency of nano-silver is further improved; the microcrystal bamboo charcoal ceramic bead is high in structural strength and can resist high temperature, so that the microcrystal bamboo charcoal ceramic bead can be regenerated by virtue of a roasting manner after being used for a long time, and the adsorption capability and the catalytic degradation and killing effects are recovered; compared with porous-ceramic-loaded nano-silver, the nano-silver-loaded microcrystal bamboo charcoal ceramic bead has relatively good effects in the aspects of water quality purification, air purification and the like, furthermore, the preparation method is simple, and the application is convenient.

The invention discloses a method for degrading organic dye based on a pyroelectric effect of phase change. The method comprises the following steps: adding a lead-free piezoelectric material BZT-xBCTinto organic dye sewage, changing the temperature in a range near room temperature to enable the lead-free piezoelectric material BZT-xBCT to generate phase change, and degrading the organic dye in the sewage through polarized charges caused by the phase change. The degradation method provided by the invention has no secondary pollution, is suitable for industrial production, and has important significance for degradation of organic dyes in sewage.

The invention provides a combined processing apparatus and a combined processing method. This combined processing apparatus is provided with: an addition production unit for performing an addition production by irradiating a work with energy in a processing region; a cutting unit for cutting the work in the processing region; a cover unit which covers the processing region; and a light-blocking filter which is arranged on at least one surface of the cover unit and changes the degree of light-blocking in accordance with the light received from the processing region.