Abstract: The present disclosure provides a positioning method, including: obtaining a current local topology map established based on objects in an environment currently observed by a robot, obtaining a full topology map pre-established based on objects in a full environment in a preset area, the current local topology map and the full topology map including nodes representing the objects; matching a node pair to be associated constructed by two nodes in the current local topology map and two nodes in the full topology map; if a degree of association of the node pair to be associated is greater than a threshold, determining that the node pair to be associated is an associated node pair; and determining a pose of the robot according to one of a plurality of search ranches, with a largest number of associated node pairs.

Abstract: A frame-type air purifier includes a purifier housing, a main frame and an image board. The purifier housing has a back plate and a front plate configured opposite to each other. The back plate has a wall positioner configured thereon. The front plate includes a first quick-demounting member configured thereon. The main frame has a central hollow and a second quick-demounting member configured thereon. The image board includes a baseboard and an imaging sheet configured on the baseboard, wherein the baseboard has a third quick-demounting member configured thereon. The first quick-demounting member of the purifier housing selectively assembles with the second quick-demounting member of the main frame correspondingly, or selectively assembles with the third quick-demounting member of the image board correspondingly.

Abstract: A machine-implemented method for producing multimedia is executed by a server. The server receives a selection of digital playbook defining a time schedule and a plurality of material requirements from a computing device, and retrieves the selected digital playbook from a digital playbook database. Then, the server generates at least one query of material content for each of the content requirements, and identifies a set of material candidates for producing multimedia from at least one material database. The server generates a multimedia file based on the material candidates and the time schedule.

Abstract: A heat-dissipating pipe module includes a first pipe unit including a first pipe member disposed at an elongate pipe-mounting portion of a cabinet for housing electronic equipment. A first connecting member engages threadably an end of the first pipe member. At least one side opening is in fluid communication with the first pipe member and is directed toward the electronic equipment. A second pipe unit includes a second pipe member disposed at the elongate pipe-mounting portion, a second connecting member, and at least one side opening. A major portion of the second pipe member has an inner diameter smaller than that of a major portion of the first pipe member. The second connecting member engages threadably the first connecting member and the second pipe member.

Abstract: An image extraction apparatus and flash control method for the same are provided. The method comprises taking a reference image, generates a first flash, and takes a first image. The first image is determined to be is overexposed or not. If the first image is not overexposed, a first flash parameter is set according to the first image. If so, a second flash is generated and a second image is taken. The second image is determined to be overexposed or not. If the second image is not overexposed, a second flash parameter is set according to the second image. If the second image is overexposed, a third flash parameter is set according to the reference image. Finally, a final flash is generated according to the first, second, or third flash parameter to obtain the desired image.