Abstract: An electrode assembly, a battery cell, a battery, and an electrical apparatus are disclosed. The electrode assembly includes a first electrode plate, the electrode plate includes a current collector and active material layers arranged on the current collector, the active material layer is provided with a plurality of material removal regions at intervals in an extension direction (L) of the first electrode plate, and the material removal region extends in a width direction (Y) of the first electrode plate; the active material layer is provided with a marking portion, a width of the marking portion in the extension direction (L) of the first electrode plate is greater than or equal to a width of the material removal region, and the marking portion spans across the material removal region.

Abstract: A method includes obtaining an image of a spatial object in a space. The spatial object is captured in the image by a camera component. The image includes one or more captured planar regions corresponding to one or more planes of the spatial object. A first captured planar region of the one or more captured planar regions includes an array of first captured identification codes and includes first captured straight lines associated with the first captured identification codes. The first captured straight lines in the image are associated with a first vanishing point. The method further includes identifying the first captured identification codes, identifying the first captured straight lines, determining first equations of the first captured straight lines, determining, coordinates of the first vanishing point, and determining one or more intrinsic parameters of the camera component based on at least the first vanishing point.

Abstract: A parameter processing method and apparatus for a virtual camera. The method includes obtaining a camera parameter of a first virtual camera in a virtual scene, the first virtual camera having a binding relationship with a physical camera in a real scene and the physical camera being configured to obtain image data of an object in the real scene, smoothing the camera parameter of the first virtual camera to obtain a target camera parameter; and configuring a second virtual camera in the virtual scene and adjusting a camera parameter of the second virtual camera based on the target camera parameter to obtain an adjusted second virtual camera, a focus of the second virtual camera corresponding to a focus of the first virtual camera, wherein the adjusted second virtual camera is configured for rendering based on the image data to obtain an image of the virtual scene comprising the object.

Abstract: Embodiments of this application provide an image processing method performed by a computer device. The method includes: obtaining an actual image photographed by a camera, the actual image comprising a target object image and a position reference pattern; determining first position information of the position reference pattern in an image coordinate system and second position information of the position reference pattern in a world coordinate system, respectively; determining target pose information of the camera in the world coordinate system based on the first position information, the second position information, and intrinsic information of the camera; and fusing a target object image and a virtual background image in the actual image based on intrinsic information and the pose information to obtain a target image.