Abstract: Disclosed are an image selection method and an electronic device. In the method, an electronic device can detect feedback information related to a user operation. The feedback information may include an optimal image selected by a decision model and a changed optimal image. The feedback information may further include images that are deleted, browsed, added-to-favorites, or shared and operation records. The feedback information may further include a facial feature in a gallery and a proportion of images including the facial feature in the gallery. The electronic device adjusts, according to the feedback information, parameters of the decision model configured to perform image selection, to obtain an updated decision model. The electronic device can perform image selection according to the updated decision model. Through the implementation of the technical solution, a selected optimal image is more in line with user habits, thereby improving convenience.

Abstract: An electronic device obtains N frames of images, and then obtains a first operation performed by a user on a target object on a screen. The electronic device displays a target box whose area cyclically changes, obtains information about the target box in an Nth frame of image based on a second operation performed by the user on the target object, and determines a feature vector of the target object based on the information about the target box.

Abstract: This application discloses a charging management and control method and an electronic device. The method includes: When connecting to an external power supply, the electronic device starts to obtain data such as a time at which the external power supply is connected, a battery level, and a charger type; the electronic device obtains first duration and second duration based on the data; in the first duration, the electronic device performs fast charging on the battery; and in the second duration, the electronic device performs slow charging on the battery, or suspends charging the battery. In this way, the electronic device performs management and control on a charging process of the battery when charging the battery, to reduce a time of continuing charging the battery in a fully charged state by the electronic device.

Abstract: Disclosed are an image selection method and an electronic device. In the method, an electronic device can detect feedback information related to a user operation. The feedback information may include an optimal image selected by a decision model and a changed optimal image. The feedback information may further include images that are deleted, browsed, added-to-favorites, or shared and operation records. The feedback information may further include a facial feature in a gallery and a proportion of images including the facial feature in the gallery. The electronic device adjusts, according to the feedback information, parameters of the decision model configured to perform image selection, to obtain an updated decision model. The electronic device can perform image selection according to the updated decision model. Through the implementation of the technical solution, a selected optimal image is more in line with user habits, thereby improving convenience.

Abstract: A video processing method is provided. The method includes obtaining a first video frame, determining that the first video frame includes at least one target object, determining a cropping box by using the at least one target object as a center, obtaining content in the cropping box, and displaying the content as a second video frame.