Abstract: The present disclosure relates to systems and methods for automatic exposure control. The methods may include obtaining a first frame and a second frame of a current scene from a camera, wherein a ratio of a first exposure time of the first frame to a second exposure time of the second frame is a first exposure ratio; obtaining a first average luminance of a brightest region in the second frame; obtaining a second average luminance of a darkest region in the first frame; and determining a dynamic range of the current scene based on the first exposure ratio, the first average luminance, and the second average luminance.

Abstract: The present disclosure relates to systems and methods for coding. The methods may include receiving at least two contexts, for each of the at least two contexts, obtaining at least one coding parameter corresponding to the context from at least one lookup table, determining a probability interval value corresponding to the context based on a previous probability interval value and the at least one coding parameter, determining a normalized probability interval value corresponding to the context by performing a normalization operation on the probability interval value, determining a probability interval lower limit corresponding to the context based on a previous probability interval lower limit and the at least one coding parameter, determining a normalized probability interval lower limit corresponding to the context by performing the normalization operation on the probability interval lower limit, and outputting at least one byte based on the normalized probability interval lower limit.

Abstract: The present disclosure relates to systems and methods for image processing. The methods may include obtaining, by a first processor, a first image and a second image of a target region. The methods may further include generating, by the first processor, a fused image based on the first image and the second image. The methods may further include identifying, by a second processor, a region of interest (ROI) associated with a target object in the first image. And the method may also include generating, by the second processor, a target image based at least in part on information associated with the ROI in the first image and the fused image.

Abstract: A system and method for jointly displaying an image and a map is disclosed. The method may including obtaining an image captured by a camera. The image may include a target in a surrounding environment of the camera. The method may further include obtaining a map of the surrounding environment. The map may at least include a location corresponding to the target and a location corresponding to the camera. The method may jointly display the image and the map, wherein a representation of the image is aligned with the location corresponding to the target and the location corresponding to the camera in the map.

Abstract: The present disclosure may relate to systems and methods for inter frame prediction of a video. A method may include setting, based on a block to be predicted of an image frame, a search template. The method may also include searching for, based on a search strategy, an optimal search block of the search template in a reference frame of the image frame. The method may further include determining, based on the optimal search block, prediction information of the block to be predicted.

Abstract: The present disclosure relates to zoom lenses and optical devices using the same. A zoom lens may include in order from an object side to an image side: a first lens group, a second lens group, a third lens group, a fourth lens group; and a fifth lens group. The zoom lens may satisfy the following conditions: ?2.28?f2/fw???1.08, and 0.15?TTL/(BFL*fw?)?0.45, wherein f2 denotes a focal length of the second lens group, fw? denotes a focal length of the zoom lens at a wide angle end, TTL denotes a total track length of the zoom lens, and BFL denotes a back focal length of the zoom lens.

Abstract: The present disclosure provides methods and systems for image correction. The method may include obtaining a first frame captured by an image acquisition device, a second frame captured by the image acquisition device prior to the first frame, and a correction coefficient of the first frame; determining, based on the first frame and the second frame, whether a gamma curve of the image acquisition device has been adjusted; in response to determining that the gamma curve of the image acquisition device has been adjusted, determining an adjustment coefficient of the correction coefficient based on the first frame and the second frame; and adjusting, based on the adjustment coefficient, the correction coefficient of the first frame.

Abstract: Intercom systems and methods for image data transmission are provided. The intercom system may include a first intercom including a first image acquisition device, one or more second image acquisition devices, and a second intercom. During an intercom with the second intercom, the first intercom may receive a request for target image data captured by one or more target image acquisition devices of the first image acquisition device and the one or more second image acquisition devices from the second intercom. The one or more target image acquisition devices may include at least one target second image acquisition device of the one or more second image acquisition devices. In response to the request, the first intercom may obtain the target image data from the one or more target image acquisition devices. The first intercom may also send a signal encoding the target image data to the second intercom for display.

Abstract: The present disclosure may provide a package assembly for packaging an object. The package assembly may include a bottom panel, at least one group of side panels, a left panel, a right panel, and at least one fastener. The at least one fastener may correspond to the at least one group of side panels respectively. For each of the at least one fastener, the fastener may be fixedly connected to a portion of a corresponding group of side panels. The portion of the group of side panels can be folded inwardly to make the fastener contact with an object placed on the bottom panel. The left side panel and the right side panel can be folded outwardly to fasten the fastener such that the object is fixed on the bottom panel.

Abstract: System and method for determining a 3D coordinate of a moving target are provided. The system may obtain 2D detection data of the moving target generated by a 2D detection device including two detection assemblies that are mounted at a known height above a horizontal plane along a first axis that forms a tilting angle with the horizontal plane. The system may determine a 2D coordinate of the moving target in a first coordinate system including the first axis and a second axis that is perpendicular to the first axis based on the 2D detection data. The 2D coordinate of the moving target may include a first value of the first axis and a second value of the second axis. The system may determine the 3D coordinate of the moving target in a second coordinate system based on the 2D coordinate, the tilting angle, and the known height.

Abstract: The present disclosure relates to systems and methods for power outage protection. The system may obtain a read/write signal of each of a plurality of storage devices. For each of the plurality of storage devices, the system may identify a state of the storage device based on the read/write signal of the storage device. The state of the storage device may include a read/write state or an idle state of the storage device. In response to an interruption of power supply to the plurality of storage devices, the system may selectively provide electric power to the plurality of storage devices using a power source based at least partially on the states of the plurality of storage devices.

Abstract: The present disclosure relates to systems and methods for code optimization. The methods include generating, based on a first macro of a user code, an assembly code corresponding to the user code. The first macro includes one or more parameters relating to one or more branch codes, and the assembly code includes assembly branch codes corresponding to the branch codes and jump codes corresponding to the assembly branch codes. The methods further include obtaining, based on a second macro of the user code, target information for identifying an execution condition of the one or more branch codes, and determining, based on the assembly code and the target information, a compiled user code. When being executed, the compiled user code may call, based on the target information, a procedure to determine a value of the execution condition. The procedure is configured to modify an execution flow of the compiled user code.

Abstract: The present disclosure relates to a lighting device for automatically switching between a visible light source and an infrared light source. The lighting device may include a light source, an infrared filter, and a driving module for driving the infrared filter.

Abstract: A circuit for driving a light-emitting diode (LED) load and a direct current to direct current (DC-DC) converter includes a first sampling sub-circuit, a driving circuit. The first sampling sub-circuit is configured to generate a current signal representing a load current of the LED load. The driving circuit is configured to receive a brightness adjustment signal and a frequency adjustment signal; generate a first control signal, based on the current signal and the brightness adjustment signal, for controlling an output current of the DC-DC converter; and generate a second control signal, based on the frequency adjustment signal, for controlling a switching frequency of the LED load.

Abstract: The present disclosure relates to systems and methods for video surveillance. The systems may obtain an initial time period corresponding to at least part of a time period during which at least one target image frame is captured by the monitoring equipment based on at least one parameter of a monitoring equipment. The systems may obtain a warning scheme associated with the initial time period. The warning scheme may include controlling an operation of a light associated with the monitoring equipment within at least one candidate time period in the initial time period and processing the at least one target image frame.

Abstract: A method for image combination may include obtaining a first image and a second image; dividing the first image into a plurality of first image blocks and dividing the second image into a plurality of second image blocks; for each of the plurality of first image blocks, determining a first block weight based on edge information of the first image block and determining a second block weight based on overall information of the first image block; for each of the plurality of second image blocks, determining a third block weight based on overall information of the second image block; determining an exposure gain ratio based on the second block weights and the third block weights; determining a first combination weight and a second combination weight based on the exposure gain ratio; generating a third image based on the first combination weights and the second combination weights.

Abstract: Systems and methods for determining a time difference are provided in the present disclosure. The systems includes a first base station configured to receive a first signal transmitted from a terminal and receive a second signal from a second base station. The systems may also include the second base station configured to receive the first signal transmitted from the terminal, and transmit the second signal after receiving the first signal. The systems may further include at least one processor configured to determine a time duration between the first base station receiving the first signal and receiving the second signal and determine the time difference between a first time period of the first signal transmitted from the terminal to the first base station and a second time period of the first signal transmitted from the terminal to the second base station based on a third time period and the time duration.

Abstract: A method and system for generating a fusion image. The method may include obtaining a first image and a second image of a same scene. Pixels of at least a part of the first image may correspond to pixels of at least a part of the second image. The method may include generating, based on the first image, a first low-frequency image corresponding to a low-frequency component of the first image, the first low-frequency image including a plurality of first pixels. The method may include generating, based on the second image, a first high-frequency image corresponding to a high-frequency component of the second image, the first high-frequency image including a plurality of second pixels, the plurality of second pixels corresponding to the plurality of first pixels.

Abstract: A power sourcing equipment is provided. The power sourcing equipment may include an input terminal, an output terminal, a switch, and a device detection circuit. The input terminal may receive a power signal. The output terminal may be electrically coupled to a powered device via a coaxial cable, which transmits the power signal from the power sourcing equipment to the powered device or a data signal from the powered device to the power sourcing equipment. The switch may control an electrical connection between the input and output terminal(s). The device detection circuit may detect whether the data signal is being transmitted from the powered device to the power sourcing equipment. If the data signal is not being transmitted from the powered device to the power sourcing equipment, the device detection circuit may control an operation of the switch based on an electrical parameter associated with the powered device.

Abstract: A device for processing images are provided. The device a support bar, a mounting housing mounted with a camera lens, and a connector configured to connect the support bar to the mounting housing. The mounting housing is integrally rotatable with the connector with respect to the support bar. The mounting housing may further be mounted with an ultrasonic probe and a lightening device. The ultrasonic probe is configured to monitor a predefined change, such as a change in an occupation state of a parking space, and the camera lens and the lightening device is controlled at least by the monitored change. When the ultrasonic probe monitors that a car is leaving or entering a parking space, the camera lens and the lightening may be switched on.