Abstract: A discovery and provisioning method. The method includes: A first device in an unprovisioned state sends a first message through a first antenna, where the first message is used by a second device to discover the first device, and the first message includes a device identifier of the first device; when a distance between the second device and the first device is less than or equal to a preset distance, the second device receives the device identifier sent by the first device; and after being discovered by the second device, the first device performs provisioning by using a second antenna.

Abstract: An image processing method and device are provided. The method includes determining at least one block covered by a mask and in a current frame image, the at least one block is obtained by dividing the current frame image; determining a pixel mean value of each block, and determining, according to the pixel mean value, a grayscale mapping curve function corresponding to each block; determining a ratio of an area of a part covered by the mask and in each block of the at least one block to an area of the mask; and determining an adjusted pixel value of the first pixel according to the ratio of the area of the part covered by the mask and in each block to the area of the mask, the grayscale mapping curve function corresponding to each block, and an original pixel value of the first pixel.

Abstract: A method of using an available mobile communication terminal as a relay station is applied to base stations (BS) and mobile communication terminals, and each mobile communication terminal can function as a relay station. When a mobile communication terminal performs communication and signals received from a base station are in a state of being weak, a relay request is sent to the base station to search for available mobile communication terminals having communication signals stronger than the signals learned to be weak within a coverage area of the base station which sends out a notice message. After receiving the notice message, an available mobile communication terminal is selected as a relay station, and a register request is sent to the relay station for connecting to the mobile communication terminal. Upon accepting the register request, the mobile communication terminal can be connected to the base station through the relay station.