Abstract: A data integrity protection method is applied to an electronic device, and the electronic device stores vendor data and first verification information. The first verification information is stored in a first storage area of the electronic device and is used to perform integrity verification on the vendor data. The method includes: First data is obtained. Digital signature is performed on the first data to generate second data and second verification information. The second data and the second verification information are stored, where the second verification information is stored in a second storage area of the electronic device. According to the data integrity protection method provided in this embodiment of this application, firmware or software customized by a third-party integrator is supported in being reloaded to a system for running, thereby simplifying a process and improving integrated development efficiency of an electronic device.

Abstract: An image processing method and a camera are provided to implement that a relative position of an intelligent analysis rule relative to a corresponding reference object can remain unchanged when a camera with a pan tilt zoom (PTZ) function is rotated and/or zooms in/out. The method includes receiving an image operation instruction, where the image operation instruction includes performing at least one of a rotation operation or a zoom operation, performing an operation on an image according to the image operation instruction, where the image is overlaid with a rule which is a tripwire or a geometric region and includes a reference object, and displaying the rule on the image on which the operation has been performed such that a relative position of the rule relative to the reference object remains unchanged before and after the operation.

Abstract: An image processing method and a camera are provided to implement that a relative position of an intelligent analysis rule relative to a corresponding reference object can remain unchanged when a camera with a pan tilt zoom (PTZ) function is rotated and/or zooms in/out. The method includes receiving an image operation instruction, where the image operation instruction includes performing at least one of a rotation operation or a zoom operation, performing an operation on an image according to the image operation instruction, where the image is overlaid with a rule which is a tripwire or a geometric region and includes a reference object, and displaying the rule on the image on which the operation has been performed such that a relative position of the rule relative to the reference object remains unchanged before and after the operation.

Abstract: A pan-tilt-zoom device identification method, a pan-tilt-zoom device, a camera, and a pan-tilt-zoom device control system are provided. The corresponding method includes, when a pan-tilt-zoom device finds that a device connects to a predetermined interface, sending a keep-alive command to the connecting device, where the keep-alive command includes pan-tilt-zoom device capability information carrying a control function of the pan-tilt-zoom device; and determining, by the connecting device, the control function of the pan-tilt-zoom device according to the keep-alive command, and reporting control capability information of the pan-tilt-zoom device.

Abstract: A pan-tilt-zoom device identification method, a pan-tilt-zoom device, a camera, and a pan-tilt-zoom device control system are provided. The corresponding method includes, when a pan-tilt-zoom device finds that a device connects to a predetermined interface, sending a keep-alive command to the connecting device, where the keep-alive command includes pan-tilt-zoom device capability information carrying a control function of the pan-tilt-zoom device; and determining, by the connecting device, the control function of the pan-tilt-zoom device according to the keep-alive command, and reporting control capability information of the pan-tilt-zoom device.