Abstract: A non-subsampled contourlet transform (NSCT)-uniform phase empirical mode decomposition (UPEMD)-polar harmonic transform (PHT) based robust zero-watermarking algorithm is provided, including the following steps: step 1: encryption on a watermark image through a Tent map; step 2: watermark embedding; step 3: watermark extraction; and step 4: decryption on the watermark image. Before embedded into a host image, the watermark image is encrypted based on the Tent map, ensuring the security of the watermark. The NSCT is performed on a host image, low-frequency information is extracted, and the UPEMD and the PHT are performed on the low-frequency information, thereby realizing the watermark embedding. This application organically combines the chaotic map algorithm and the novel watermarking technique, realizing the method of embedding a digital zero-watermark into a digital image.

Abstract: A method and an apparatus for in-game information interaction, and an electronic device are provided. The method includes: in response to determining that a first virtual object executes a first target interaction operation on a target object in a game scene, generating clue information corresponding to the first virtual object, and associating the clue information with the target object, where the target object is at least one of: a second virtual object, a non-player character and a virtual article; and in response to the second virtual object acquiring, from the target object, the clue information corresponding to the first virtual object, displaying identifier information corresponding to the first virtual object, based on the clue information, in a graphical user interface corresponding to the second virtual object.

Abstract: The present disclosure provides a game character control method. The method includes: in response to an attack instruction, controlling a game character to perform an attack operation on a target virtual object in a game scene; in response to the attack operation and the target virtual object satisfying a preset interaction condition, determining a current additional impact parameter possessed by the game character and corresponding to the target virtual object; and based on the current additional impact parameter and a basic impact parameter of the attack operation, updating a preset attribute value of the target virtual object.

Abstract: A method for controlling a virtual object, including: determining, in response to a trigger instruction for a game skill of a first player character located in a game scene, a target virtual object corresponding to the trigger instruction, and controlling the target virtual object to monitor a monitoring area in the game scene so as to locate a second player character within the monitoring area; and, displaying calibration information of the second player character located in the graphical user interface, where the calibration information of the second player character comprises at least one of a character identification corresponding to the second player character or a position identification corresponding to the second player character.

Abstract: A method and an apparatus for in-game information interaction, and an electronic device are provided. The method includes: in response to determining that a first virtual object executes a first target interaction operation on a target object in a game scene, generating clue information corresponding to the first virtual object, and associating the clue information with the target object, where the target object is at least one of: a second virtual object, a non-player character and a virtual article; and in response to the second virtual object acquiring, from the target object, the clue information corresponding to the first virtual object, displaying identifier information corresponding to the first virtual object, based on the clue information, in a graphical user interface corresponding to the second virtual object.

Abstract: An in-game interaction method and apparatus, an electronic device and a storage medium are provided. The method includes: in response to a control instruction by a first user with respect to a first virtual skill of a first controlled virtual object, obtaining position coordinates of the first controlled virtual object in a virtual scene; obtaining a second controlled virtual object within a preset range with the position coordinates as a reference, the second controlled virtual object being controlled by a second user; determining whether the initial outline information of the second controlled virtual object is consistent with current outline information; and displaying, in the graphical user interface of the first user, prompt information that the second controlled virtual object is a camouflaged object, if it is determined that the initial outline information is inconsistent with the current outline information.

Abstract: A method and an apparatus for in-game information interaction, and an electronic device are provided. The method includes: in response to determining that a first virtual object executes a first target interaction operation on a target object in a game scene, generating clue information corresponding to the first virtual object, and associating the clue information with the target object, where the target object is at least one of: a second virtual object, a non-player character and a virtual article; and in response to the second virtual object acquiring, from the target object, the clue information corresponding to the first virtual object, displaying identifier information corresponding to the first virtual object, based on the clue information, in a graphical user interface corresponding to the second virtual object.