173results about How to "Guaranteed picture quality" patented technology

The invention discloses a method for achieving user authentication by utilizing a camera. The method comprises the following steps: (1) pre-collecting and storing a facial image of a user, (2) performing vivo detection on a facial image of a current user through the camera in the field use process, executing the step (3) if the detection succeeds, and prompting that the detection fails if not, (3) performing field photographing on the current user through the camera and performing storing, (4) comparing the stored facial image of the user with the pre-collected facial image of the user to obtain the degree of similarity, and (5) comparing the degree of similarity and a preset threshold value and determining whether the two compared facial images belong to the same person, wherein it is determined that the two compared facial images belong to the same person if the degree of similarity is greater than or equal to the preset threshold value, and the authentication cannot be passed if the degree of similarity is smaller than the preset threshold value. According to the method for achieving the user authentication by utilizing the camera, because dual detection is performed through a facial recognition system and the vivo detection, the situation of easily invading the system can be effectively controlled, and the security of user data is promoted.

The invention provides a real-time video transmission method, which relates to the field of data transmission, is applied to a video sending end in a real-time video transmission system, and comprisesthe following steps of: obtaining an available bandwidth and an available frame rate according to feedback information sent by a server; Performing frame loss processing on the video data according to the available bandwidth and the available frame rate to obtain video data after frame loss processing; According to the available bandwidth and the available frame rate, encoding the video data subjected to frame loss processing to obtain encoded video data; And sending the encoded video data to a server. an available bandwidth and an available frame rate are obtained according to feedback information sent by the server, the real-time video transmission is carried out on the video data, then the video data is subjected to frame loss processing, and then the video data subjected to the frameloss processing is coded and sent, so that the video code rate is smoothened by the real-time video transmission, and the self-adaptive coding adjustment is realized, thereby ensuring the image quality and fluency of a video sent by a video sending end in real time in a weak network environment.

The invention discloses a video transmission method and device. The method comprises following steps of determining a total current network bandwidth; determining code streams of videos currently transmitted by video channels; combining the videos transmitted by the video channels according to preset rules when the network bandwidth needing to be occupied by the total code streams of the videos currently transmitted by the video channels is greater than the total current network bandwidth; and then transmitting the videos from the video channels. Through adoption of the scheme, when the bandwidth is insufficient, all the video channels are monitored under the condition of smooth playing; the videos are played smoothly; and moreover, the demanded video image quality is ensured.

The invention discloses a display screen image adjusting method. The display screen image adjusting method comprises the following steps: obtaining a to-be-displayed image on a display terminal and analyzing the image, to determine display information of the to-be-displayed image; according to the display information of the to-be-displayed image, determining display data, and processing the display data according to a preset rule, to obtain display control parameters; inputting the display control parameters to corresponding control functions, to obtain corresponding control curves; according to the corresponding control curves, adjusting the to-be-displayed image and displaying the image on the display terminal. The invention also discloses a display terminal and a readable storage medium. The scheme improves a light leakage problem of a display screen on the premise of not increasing any hardware cost, and the scheme maintains image quality standard of the display screen.

The embodiment of the invention, which relates to the technical field of camera testing, discloses a camera testing system and method, a terminal and a computer-readable storage medium. The testing system is composed of a control unit, a test light box, a test stand arranged in the test light box, and a test picture card arranged in the test light box. The test stand is used for fixing a to-be-tested terminal and being connected to a camera of the to-be-tested terminal. The control unit in communication connection with the test stand and the camera is used for controlling the test stand to move freely in the test light box, triggering the camera to carry out shooting after the test stand reaches a designated position, and acquiring image information shot by the camera. With the camera testing system and method, the terminal and the computer-readable storage medium, while the need of testing the camera of the terminal is met, the testing requirements of the resolution, ambient light source types, and picture quality and the like are guaranteed and the testing costs are lowered and the economic and practical effects are good.

The invention provides a touch screen and a display device. The touch screen comprises a touch electrode plate and pixel electrodes arranged in a matrix mode. The touch electrode plate is arranged on the orthographic projection direction of the pixel electrodes. A black matrix is further arranged on the orthographic projection direction of the pixel electrodes. The black matrix corresponds to the area between any two adjacent pixel electrodes. The touch electrode plate is located on the orthographic projection direction of the black matrix, and the black matrix shields the edge line of the touch electrode plate completely. According to the touch screen, the black matrix shields the edge line of the touch electrode plate completely so that touch electrode plates of any graphs can not be seen by the human eyes in the displaying process, and therefore the frame quality in the displaying process of the touch screen can be ensured; the problem of vanishing of the touch electrode plate in the touch screen is solved, and the display effect of the touch screen is improved.

A head-mounted display includes a left-eye display panel that displays a left-eye image, a left-eye optical system that has an angle of view from 45 to 55 degrees and forms a virtual image of the left-eye image, a right-eye display panel that displays a right-eye image, a right-eye optical system that has an angle of view from 45 to 55 degrees and forms a virtual image of the right-eye image, and a display control unit that controls the screen display of the left-eye display panel and the right-eye display panel.

The invention discloses a multi-stream broadcast method and device. The method includes the steps: firstly, selecting one stream from various stream and playing a video; secondly, acquiring continuous smooth display time S and continuous unsmooth display time T of the stream; comparing the continuous smooth display time S and the continuous unsmooth display time T with preset continuous smooth video playing time N, and switching the streams according to comparison results; finally, playing the switched streams. By the aid of the technology, network bandwidth is optimally matched with the streams, a user automatically watches the video as clear as possible on the premise of limited bandwidth, existing video playing fluency is improved, picture quality is ensured, and the method and the device are suitable for practical application.

The invention discloses an intelligent vehicle insurance mobile video surveying system, mainly comprising a mobile terminal, a service terminal and a cloud service terminal, wherein the mobile terminal is provided with a vehicle insurance system therein, the vehicle insurance system comprises an operation module, a video module, an audio module, an image processing module, an audio and video synchronization module and an information feedback module, login verification is performed on user information through the vehicle insurance system in the mobile terminal, shooting and explanation are performed on a damaged part of an on-site vehicle by the video module and the audio module, then a shot video is uploaded to the cloud service terminal by the audio and video synchronization module to achieve recording, the service terminal performs real-time interface interconnection to check the site and make a loss assessment bill, feedback and explanation for the loss assessment bill can be performed through the information feedback module. In conclusion, through adoption of the intelligent vehicle insurance mobile video surveying system of the invention, the damaged part of the vehicle can besurveyed quickly, loss assessment can be completed in a remote way, and at the same time, clearness and non-distortion of video pictures can be ensured, and the damaged part can be well explained.

The invention discloses an image brightness correction method which comprises steps as follows: S1, taking a partitioned to-be-corrected image as a current to-be-corrected zone; S2, determining correction coefficients of all pixels in the current to-be-corrected zone with a bilinear interpolation algorithm; S3, determining brightness values of the pixels after correction according to original brightness values and the correction coefficients of the pixels in the current to-be-corrected zone; S4, contracting the to-be-corrected zone towards the optical center of the image, partitioning the contacted zone again, taking the partitioned zone as the current to-be-corrected zone, and returning to S2 until the preset correction times are reached. With the adoption of the image brightness correction method, the brightness correction running speed can be greatly increased, the method is more applicable to practical application of a production line, the correction result can be more detailed, and the quality of corrected images is guaranteed.

The present invention relates to a drive method of a display device, comprising receiving an input signal which includes input red gray-scale values, input green gray-scale values and input blue gray-scale values; and adjusting the input signal to an output signal which includes output red gray-scale values, output green gray-scale values and output blue gray-scale values. The output red gray-scale values is not greater than the input red gray-scale values, the output green gray-scale values is not less than the input green gray-scale values, and the output blue gray-scale values is not greater than the input blue gray-scale values.

The embodiment of the invention discloses a video transmission method and device, electronic equipment and a storage medium. The method comprises the following steps: determining a current real-time network bandwidth; adjusting the code rate of a video encoder according to the real-time network bandwidth and a preset expected network bandwidth; performing compression processing on a target video based on the adjusted code rate through the video encoder to obtain a compressed target video; sending the compressed target video to a video server through a network, wherein the video server sends the compressed target video to the video receiving end. According to the mehtod disclosed in the technical scheme of the embodiment of the invention, the real-time transmission of the video between thevideo sending end and the video server is ensured, and the video picture quality can be ensured.

The invention discloses a panoramic image shooting method, a terminal device and a storage medium. The panoramic image shooting method comprises the following steps: displaying the preset default target box and default calibration box on the shooting interface when the terminal device turns on the AR panoramic camera mode; receiving a mobile operation of a user, adjusting the default calibration box according to the mobile operation, and judging whether the default calibration box is aligned with the default target box or not in real time; receiving a shooting instruction to take a first imagewhen the default calibration box is aligned with the default target box, wherein the first image carries the initial location information of the camera; generating a number of target boxes accordingto a preset rule based on the initial location information to guide the panoramic shooting, and prompting the user to align at the generated target boxes successively to take the corresponding secondimages; and splicing the shot and obtained first image and all the second images into a panoramic image. The panoramic image shooting method adopts the enhanced display technology to enable the user to take a plurality of images in the quiescent state, therefore, the quality of the image is guaranteed.

The present invention relates to a wifi-based family courtyard intelligent nursing device, which comprises a video acquisition module, an environment data acquisition module, a cloud platform, an irrigation and light module, a system core module and a control terminal. Through the adoption of the nursing device, under the condition of unmanned maintenance, users can carry out real-time monitoring for a courtyard environment and nursing for plants in families through a computer WEB page or a mobile terminal. The device provides different control methods and supports WeChat control, and personalized nursing and monitoring solutions can be set according to different environments and plants.

The invention provides an ultra-wide picture fusion display method. The method comprises the following steps: cutting a super-wide multimedia source into a plurality of picture blocks; Taking the width value of the ultra-wide multimedia source resolution as a picture block cutting width value within the display size range of the display device; In the display size range of the multimedia interface, equally dividing the length value of the ultra-wide multimedia source resolution to serve as a picture block cutting length value; Sequentially arranging the picture blocks layer by layer to recombine an output picture source conforming to the display size range of the multimedia interface; enabling Each display device to acquire an output picture source; showing corresponding picture block areas in the output picture source respectively; splicing the picture block areas into the fusion display, so that the image quality of the multimedia source of the ultra-wide image during output is effectively ensured, the fusion display of the ultra-wide image is realized in an economic manner by using fewer multimedia interfaces, the difficulty and cost of the fusion display of the ultra-wide image are reduced, and the popularization and promotion are facilitated.

The invention discloses a coding method of an instant video and electronic equipment and belongs to the video field. The method comprises the following steps of acquiring an interest area in a current instant video frame; if a network bandwidth satisfies a first preset condition, dividing the instant video frame which at least includes the interest area into at least one macro block, and setting and composing a quantization parameter corresponding to the at least one macro block; according to the quantization parameter, coding the at least one macro block and generating the instant video frame after coding. Through the quantization parameter used for indicating a fine degree of the macro block in a coding process, coding is performed on the at least one macro block so that transmission efficiency of the instant video is improved and a user experience is increased.

The invention provides a liquid crystal display television brightness adjustment system, which comprises a control device, an adjustment signal decoder, an adjustment signal selector, an image adjustment module, a backlight adjustment module, a liquid crystal display screen and a backlight, wherein the control device is used for generating an image brightness adjustment command, the adjustment signal decoder is used for receiving and decoding the image brightness adjustment command, the adjustment signal selector is used for generating a corresponding image adjustment signal to the image adjustment module or a brightness adjustment signal to the backlight adjustment module according to an adjustment mode designated by the decoded image brightness adjustment command, the image adjustment module is used for receiving the image adjustment signal to adjust the image brightness of the liquid crystal display screen, and the backlight adjustment module is used for receiving the brightness adjustment signal to adjust the glow brightness of the backlight. Since the system adopts a method of controlling the glow brightness of the backlight to control the image brightness of the liquid crystal display television, no impact is caused to the gray level of the image signal, the image quality at low brightness can be ensured and the goals of saving energy and prolonging the service life of the backlight are achieved at the same time.

The invention discloses a grid integrated drive circuit, a display panel and a display device. The grid integrated drive circuit comprises a plurality of shifting register units which are in cascade connection and at least one signal line used for inputting control signals to the grid integrated drive circuit. The signal line is provided with signal output branches with the number being smaller than the number of the shifting register units. At least one signal output branch is connected with control signal input ends corresponding to at least two shifting register units, and thus it can be guaranteed that the obtained signal intensity attenuation phenomenon of at least some shifting register units is retarded. Compared with the mode that all control signals are input from one end of the display panel and sequentially pass through all the shifting register units in the grid integrated drive circuit in the prior art, the grid integrated drive circuit can effectively retard the output intensity attenuation of all the control signals, the output strength uniformity of all the control signals can be effectively improved, and the quality of displayed images and the working performance of the display panel are guaranteed.