Abstract: Disclosed are a method for determining semi-synchronous exposure parameters and an electronic device. The method in the embodiments of the present invention comprises: acquiring first exposure parameters corresponding to each lens; if it is determined that a preset EV limit value is not satisfied according to the first exposure parameters of each lens and adjacent lenses, respectively calculating exposure control parameters of each lens; calculating second exposure parameters corresponding to each lens according to the exposure control parameters of each lens and the first exposure parameters corresponding to each lens; if it is determined that the preset EV limit value is satisfied according to the second exposure parameters of each lens and adjacent lenses, determining the second exposure parameters corresponding to each lens to be semi-synchronized exposure parameters of each lens.

Abstract: Disclosed are a method for determining semi-synchronous exposure parameters and an electronic device. The method in the embodiments of the present invention comprises: acquiring first exposure parameters corresponding to each lens; if it is determined that a preset EV limit value is not satisfied according to the first exposure parameters of each lens and adjacent lenses, respectively calculating exposure control parameters of each lens; calculating second exposure parameters corresponding to each lens according to the exposure control parameters of each lens and the first exposure parameters corresponding to each lens; if it is determined that the preset EV limit value is satisfied according to the second exposure parameters of each lens and adjacent lenses, determining the second exposure parameters corresponding to each lens to be semi-synchronized exposure parameters of each lens.

Abstract: The present invention provides an anti-shake method for a panoramic video, which comprises: obtaining, in real time, an output video frame, a fisheye image corresponding thereto, a pixel timestamp in the video frame, and a corresponding camera gyroscope timestamp; synchronizing the pixel timestamp in the video frame with the corresponding camera gyroscope timestamp, and calculating a rotation matrix of the camera movement in the camera gyroscope timestamp; smoothing the camera movement and establishing a coordinate system of a smooth trajectory; correcting the fisheye image distortion; and rendering the fisheye image by means of forward rendering to generate a stable video. According to the present invention, the rolling shutter distortion of a panoramic video sequence can be corrected, the image distortion caused by the rolling shutter of a CMOS can be corrected, and the rolling shutter is eliminated, thereby achieving a better anti-shake effect of a video image.

Abstract: The present invention provides an anti-shake method for a panoramic video, which comprises: obtaining, in real time, an output video frame, a fisheye image corresponding thereto, a pixel timestamp in the video frame, and a corresponding camera gyroscope timestamp; synchronizing the pixel timestamp in the video frame with the corresponding camera gyroscope timestamp, and calculating a rotation matrix of the camera movement in the camera gyroscope timestamp; smoothing the camera movement and establishing a coordinate system of a smooth trajectory; correcting the fisheye image distortion; and rendering the fisheye image by means of forward rendering to generate a stable video. According to the present invention, the rolling shutter distortion of a panoramic video sequence can be corrected, the image distortion caused by the rolling shutter of a CMOS can be corrected, and the rolling shutter is eliminated, thereby achieving a better anti-shake effect of a video image.

Abstract: A method for anti-virus scanning is described, including: when performing an anti-virus operation on at least one file in a disk, recording information of the at least one file and information of a disk section having a read/write operation during the anti-virus scan operation; analyzing the information of the at least one file and the information of the disk section having the read/write operation during the anti-virus scan operation, and obtaining a cache reference section; loading one or more files in the cache reference section into a memory, and reading the loaded one or more files in the memory to scan when receiving an anti-virus scan request. Further, a device for anti-virus scanning is also described. In the method and the device, the amount of disk read/write operations during the anti-virus scan can be decreased, and the efficiency of anti-virus scanning can be improved.

Abstract: A method for anti-virus scanning is described, including: when performing an anti-virus operation on at least one file in a disk, recording information of the at least one file and information of a disk section having a read/write operation during the anti-virus scan operation; analyzing the information of the at least one file and the information of the disk section having the read/write operation during the anti-virus scan operation, and obtaining a cache reference section; loading one or more files in the cache reference section into a memory, and reading the loaded one or more files in the memory to scan when receiving an anti-virus scan request. Further, a device for anti-virus scanning is also described. In the method and the device, the amount of disk read/write operations during the anti-virus scan can be decreased, and the efficiency of anti-virus scanning can be improved.