Abstract: An image fusion method based on image and LiDAR point cloud is provided. The method comprises: acquiring a first image and sparse point cloud data, point cloud data in each channel of the sparse point cloud data corresponding to pixels in the first image respectively, and the sparse point cloud data and the first image having space and time synchronicity; obtaining a target gradient value corresponding to at least one target pixel in the first image according to the first image, the target pixel being a non-edge pixel of the first image; up-sampling the sparse point cloud data based on at least one target gradient value to obtain dense point cloud data, the target gradient value being determined according to a corresponding target pixel between adjacent channels of the sparse point cloud data; and obtaining a target fusion image based on the first image and the dense point cloud data.

Abstract: A method for training an image segmentation model includes: acquiring target category feature information that represents category features of a training sample and a prediction sample, and associated scene feature information thereof; performing splicing processing on the target category feature information and the associated scene feature information; inputting first spliced feature information obtained by the splicing processing into an initial generation network to perform image synthesis processing; inputting a first synthesized image obtained by the synthesis processing into an initial determination network to determine authenticity; inputting the first synthesized image into a classification network of an initial image segmentation model to perform image segmentation, to obtain a first image segmentation result; and training the classification network of the initial image segmentation model based on a first image determination result, the first image segmentation result, and the target category feature

Abstract: An electric toothbrush comprises a toothbrush handle (1), a toothbrush rod (2) and a toothbrush head. The toothbrush head comprises a left-rotating hairbrush and a right-rotating hairbrush (3, 3?), which are oppositely and rotatably fixed on a toothbrush shaft (4). The right end of the toothbrush shall (4) is arranged in a shaft hole at the upper end of the toothbrush rod (2) and is axially positioned on the shaft hole through the right-rotating hairbrush (3?) and a shaft cap arranged at the right end of the toothbrush shaft (4); and the bristles of each of the left-rotating hairbrush and the right-rotating hairbrush (3, 3?) comprise an inner ring of bristles and an outer ring of bristles (6, 6?, 7, 7?).

Abstract: An electric toothbrush comprises a toothbrush handle (1), a toothbrush rod (2) and a toothbrush head. The toothbrush head comprises a left-rotating hairbrush and a right-rotating hairbrush (3, 3?), which are oppositely and rotatably fixed on a toothbrush shaft (4). The right end of the toothbrush shall (4) is arranged in a shaft hole at the upper end of the toothbrush rod (2) and is axially positioned on the shaft hole through the right-rotating hairbrush (3?) and a shaft cap arranged at the right end of the toothbrush shaft (4); and the bristles of each of the left-rotating hairbrush and the right-rotating hairbrush (3, 3?) comprise an inner ring of bristles and an outer ring of bristles (6, 6?, 7, 7?).