Abstract: A device control method, apparatus, and system applicable to the field of smart home technologies. The method includes: recognizing a collected environmental image; determining at least one to-be-recognized region in the environmental image; monitoring a target body part movement in the to-be-recognized region; if it is monitored that the target body part movement is consistent with a preset activation movement, tracking and monitoring a target body part movement in a target to-be-recognized region; or if it is monitored that the target body part movement in the target to-be-recognized region is a preset control movement, controlling a terminal device to perform a function operation corresponding to the control movement. The terminal device is controlled by using a target body part movement including two-stage movements.

Abstract: A text recognition method includes scaling a to-be-recognized image based on a first scale ratio, determining first coordinate information corresponding to a text line area in the scaled to-be-recognized image, determining, based on the first scale ratio, second coordinate information corresponding to the first coordinate information, where the second coordinate information is coordinate information of the text line area in the to-be-recognized image, performing character recognition on text line images corresponding to the second coordinate information by using a recognition model, and determining text line content corresponding to the text line images, where the to-be-recognized image includes the text line images.