Abstract: Provided are an image capturing method and apparatus, a device and a storage medium. The method includes: at a new acquisition moment, predicting a predicted projection area position of a target object in a current captured image on an image sensor and estimated exposure brightness information of the target object in the predicted projection area position; adjusting, according to a type of the target object and the estimated exposure brightness information, an exposure parameter of the target object in the predicted projection area position when the new acquisition moment arrives; and acquiring a new captured image at the new acquisition moment according to the adjusted exposure parameter, where both the new captured image and the current captured image include the target object.

Abstract: Provided are a vehicle monitoring method and a vehicle monitoring system. The vehicle monitoring method includes that: a polarization angle of polarized light in a sky image reflected by a vehicle window in a monitoring scenario is calculated, and a light-filtering polarization angle is calculated according to the polarization angle of the polarized light in the sky image reflected by the vehicle window, where the polarized light in the sky image is formed by scattered sunlight in a sky region corresponding to the sky image; the polarized light in the sky image reflected by the vehicle window in the monitoring scenario is filtered out according to the light-filtering polarization angle; and the monitoring scenario is imaged to form a monitoring image.

Abstract: Provided are a watermark adding method and apparatus, a storage medium and a device. The method includes steps described below. To-be-added watermark information is acquired, and a time offset is determined according to the watermark information; a video frame rate is acquired, and time information of a frame image in a video is determined according to the video frame rate; and offset processing is performed on the time information according to the time offset to add the watermark information to the video.

Abstract: Provided are a wake-up method and device for a surveillance camera, a surveillance camera and a medium. The surveillance camera includes a detection sensor and an image sensor. The wake-up method for a surveillance camera includes: in response to the detection sensor detecting presence of an intrusion target in a surveilled region, controlling the image sensor to enter a first image acquisition mode; controlling the image sensor in the first image acquisition mode to acquire at least two frames of surveillance images; determining whether the intrusion target is a surveilled target according to the at least two frames of surveillance images; and in response to determining that the intrusion target is a surveilled target, switching the image sensor from the first image acquisition mode to a second image acquisition mode, and controlling the image sensor in the second image acquisition mode to acquire a surveillance image having the surveilled target.

Abstract: Provided are a white balance correction method and apparatus, a device, and a storage medium. The white balance correction method includes: inputting an image to be corrected into a pre-trained chromatic-aberration-free point model to obtain a chromatic-aberration-free point weight map of the image to be corrected; determining, according to the chromatic-aberration-free point weight map, an illumination color parameter of the image to be corrected; and performing, according to the illumination color parameter, white balance correction on the image to be corrected to obtain a corrected image.

Abstract: Provided are an image fusion method, a storage medium and an electronic device are to-be-fused are acquired. Luminance and chrominance separation is performed on the visible light image to extract a luminance component and a chrominance component. Luminance fusion is performed on the luminance component of the visible light image and the infrared image to obtain a luminance fusion result. Image reconstruction is performed according to the luminance fusion result and the chrominance component of the visible light image to obtain a fused image.

Abstract: A video stream transmission control method includes that: in response to detecting that a receiving time interval of two adjacent received video frames in multiple received video frames is less than an interval threshold, theoretical receiving time of a next video frame sent by a video stream sending device corresponding to the each received video frame is determined; multiple theoretical receiving times corresponding to the multiple video stream sending devices are sorted, and expected receiving time of a next video frame sent by each video stream sending device of the multiple video stream sending devices is determined according to a sorting result and interval adjustment time; and the video frame sending time interval of the each video stream sending device is adjusted according to the expected receiving time and the theoretical receiving time corresponding to the each video stream sending device.

Abstract: Provided are a method and apparatus for processing map point location information and a server. The method includes steps described below. A total number of point locations within a to-be-marked region in an electronic map is acquired, and the to-be-marked region is divided into a multiple subregions according to the total number of point locations; where the multiple subregions have the same length in a longitude direction and the same length in a latitude direction. The multiple point locations are divided into the plurality of subregions respectively according to location information of the multiple point locations within the to-be-marked region. Numbers of point locations within the multiple subregions are acquired respectively, and the length of the multiple subregions in the longitude direction and the length of the multiple subregions in the latitude direction are adjusted according to the numbers of point locations within the multiple subregions.

Abstract: Provided is an object recognition method which includes obtaining a first visible-light image acquired by the first camera device and a second visible-light image acquired by the second camera device; performing exposure processing on the first visible-light image according to the luminance information of the bright area image of the first visible-light image and performing exposure processing on the second visible-light image according to the luminance information of the dark area images of the first visible-light image and/or the second visible-light image, where the dark area image is an area image having a luminance value less than or equal to the preset value; and performing target object detection on the first visible-light image obtained after exposure processing and the second visible-light image obtained after exposure processing and recognizing and verifying a target object according to the detection result.

Abstract: A vector data processing method includes that each computing node receives newly added vector data and places the data in a cache; when detecting that an amount of the data in the cache of one computing node meets a preset amount, the one computing node sends the amount to a master node; the master node acquires an amount of all computing nodes, and in the case where the average amount reaches a preset average amount, the master node instructs each computing node to extract a training sample; each computing node extracts a training sample from and sends the training sample to a training node; the training node trains a classifier to obtain a target classifier; each computing node classifies the newly added vector data according to the similarity of vector features and establishes a feature classification index according to a classification result and performs vector data retrieval.

Abstract: Provided are a white balance abnormality determination method and apparatus, a storage medium, and an electronic device. The method includes: acquiring at least one target block in a first channel image, and acquiring at least one reference block in a second channel image for each target block, where the first channel image is adjacent to the second channel image; determining a color feature representative value of each target block and a color feature representative value of each reference block associated with a position of a respective target block; determining, a color feature difference value between the first channel image and the second channel image; determining whether a white balance abnormality image exists in the first channel image and the second channel image; and in a case where a white balance abnormality image exists in the first channel image and the second channel image, adjusting the white balance abnormality image.

Abstract: A method for storing video data includes, when receiving the I-frame data to be stored, detecting whether the written data exists in the video cache space; when detecting that the written data exists in the video cache space, reading a target writing position of the I-frame data to be stored and determining whether the target writing position is located within a position range corresponding to the written data in the first cache space; when determining the target writing position is located within the position range, writing, based on the target writing position, the I-frame data to be stored to the first cache space for caching and detecting whether the first cache space is full; and when detecting that the first cache space is full, writing all the video data in the video cache space to a memory space of the terminal device for storage and emptying the video cache space.

Abstract: Provided are a camera, a method, apparatus and device for switching between a day mode and a night mode, and a medium. The method includes steps described below. In response to a current camera mode being the night mode, a color temperature value of a current imaging picture is determined. Visible light illuminance of the current imaging picture is determined by utilizing the color temperature value and an infrared light contribution ratio of picture brightness obtained based on white balance statistical information of the current imaging picture and used as first visible light illuminance. It is determined whether to switch from the current night mode to the day mode by utilizing a magnitude relationship between the first visible light illuminance and a first preset illuminance threshold.

Abstract: Provided are a color adjustment method, a color adjustment device, an electronic device, and a computer-readable storage medium. The method includes: determining an adjustment area corresponding to an edge pixel, where the adjustment area includes multiple pixels; acquiring color information of the edge pixel and color information of each similar pixel in the adjustment area, where a pixel type of the similar pixel is consistent with a pixel type of the edge pixel; and adjusting a parameter value of the edge pixel according to the color information of the each similar pixel, the color information of the edge pixel, and a brightness parameter of the edge pixel.

Abstract: A code rate control method and apparatus, an image acquisition device, and a readable storage medium are provided. The method includes: acquiring the gain and exposure time of an image to be encoded from an image processing module of an image acquisition device; obtaining corresponding reference distortion degree according to the gain and exposure time of said image; calculating the difference between the distortion degree in a characteristic region of said image and the reference distortion degree; calculating a distortion tolerance degree of macro blocks constituting said image according to the difference between the distortion degree in the characteristic region of said image and the reference distortion degree; performing macro block predictions on the respective macro blocks in said image, to obtain an optimum macro block prediction mode; and encoding said image, which corresponds to the optimum macro block prediction mode.

Abstract: Provided are a device cross-region access method and apparatus, an electronic device, and a storage medium. The method includes: receiving a cross-region access request from a target device and determining IP address information in the cross-region access request; determining information of a cross-region proxy server matching the target device according to the IP address information, where the cross-region proxy server is preset in a proxy region different from a target region where the target server is located, and the cross-region proxy server and the target server are in a distributed deployment; and transmitting the information of the cross-region proxy server to the target device to enable the target device to establish a connection to the cross-region proxy server.

Abstract: Provided are a video encoding method and apparatus, an electronic device, and a computer-readable storage medium. The method includes: acquiring status information of each macroblock in an image to be encoded; dividing the image to be encoded into a plurality of status regions according to the status information of each macroblock; determining a quantizer parameter adjustment value of each of the plurality of status regions in the image to be encoded according to a preset quantizer parameter value table; acquiring a quantizer parameter encoding value of each macroblock in a reference frame image of the image to be encoded; determining a quantizer parameter encoding value of each macroblock in the image to be encoded; and compressing and encoding the image to be encoded.

Abstract: Disclosed are a method and apparatus for automatically detecting and suppressing fringes, an electronic device, and a computer-readable storage medium. The method includes the following steps: an image shot by a camera is acquired, and a fringe of the image is recognized; at least one fringe action parameter is acquired among shooting parameters of the camera based on a recognition result obtained by recognizing the fringe of the image; and a parameter adjustment is performed on the acquired fringe action parameter by adopting a parameter adjustment strategy matched with the acquired fringe action parameter, to perform fringe suppression on the image shot by the camera.

Abstract: Provided are a dual-spectrum image automatic exposure method and apparatus, and a dual-spectrum image camera. This method includes acquiring an original image collected by the image sensor; performing logical light splitting processing on the original image to obtain an infrared image and a visible light image; determining whether to use infrared cutoff filter; if it is determined to use the infrared cutoff filter, performing exposure processing on the visible light image by using a single-spectrum exposure algorithm to obtain a visible light image that conforms to a target exposure effect; and if it is determined not to use the infrared cutoff filter, performing the exposure processing on the infrared image and the visible light image by using a dual-spectrum exposure algorithm to obtain a visible light image that conforms to a first exposure effect and an infrared image that conforms to a second exposure effect.

Abstract: Provided are a graphic drawing method applied to a terminal device. The terminal device includes a canvas deployed on an upper layer of a video stream display window and structured feature data of at least one basic graphic matching the canvas. The method includes: monitoring in real time a target graphic drawing event that is performed by a paintbrush based on a selected basic graphic; upon monitoring the target graphic drawing event, acquiring, for each time point in which each frame of image in a video stream is displayed, a drawing coordinate of the paintbrush at each time point; and rendering and drawing on the canvas a target graphic corresponding to an image displayed at each time point according to structured feature data of the selected basic graphic and the drawing coordinate. Further provided are a graphic drawing apparatus, a device, and a storage medium.