493results about How to "Resolve distortion" patented technology

The invention provides an automatic synthesis method for a facial image. A user inputs two facial source images, a target image and semantic information of an area to be edited; a model matching module utilizes an active appearance model to automatically search an image and provide facial shape information and facial texture information of the facial image; then, the shapes of the two facial images are aligned by using the characteristics of the model, and the shapes of the source images in the edited area are aligned to a corresponding area in the target image by virtue of the deformation of a sheet sample band; a characteristic synthesis module is used for characteristic synthesis for the shape information and the texture information of the aligned source images and the target image, so as to generate a synthetic image automatically; an occlusion processing module is used for occlusion processing the synthetic image, and the occlusion areas of the source images are divided, matched and seamlessly integrated into the target image. Compared with the traditional facial synthesis, the invention integrates the characteristic areas of the two images and solves the problem of image distortion caused by partial face occlusion in the target image.

The invention belongs to the field of visual sensors, laser radars, embedded unmanned aerial vehicles and provides a visual sensor laser radar fused unmanned aerial vehicle positioning and mapping device and method in order to solve the problems of autonomous positioning and environment map establishment of an unmanned aerial vehicle in a GPS denial environment and achieve autonomous flight and obstacle avoidance of the unmanned aerial vehicle in an unknown environment. The invention comprises a binocular camera, a laser radar, an IMU inertial measurement unit, an embedded airborne processor and an unmanned aerial vehicle platform. The binocular camera collects visual information of the surrounding environment; the laser radar is mainly used for measuring three-dimensional position information of the surrounding environment of the unmanned aerial vehicle; the IMU inertial measurement unit is used for measuring acceleration and angular velocity information of the unmanned aerial vehicleat high frequency; the embedded airborne processor is used for algorithm operation, and operates an autonomous positioning and mapping algorithm by processing data acquired by the camera, the radar and the IMU, so as to obtain the pose of the unmanned aerial vehicle and establish an environment map. The invention is mainly applied to unmanned aerial vehicle design and manufacturing occasions.

The invention provides a method and a device used for video enhancement. The method comprises the steps as follows: a nonlinear tensioning curve mapping table is arranged; for each frame of image, the histogram balance mapping table of the frame of image is calculated according to the brightness data; subsequently, the mapping value of at least each brightness value of a brightness value set of the pixel point of the frame of image in the nonlinear tensioning curve mapping table and the histogram balance mapping table is weighted and averaged; furthermore, a brightness mapping table is used for recording the corresponding relationship between each brightness value and the mapping value after weighted-average; subsequently, according to the brightness mapping table, the brightness value of the pixel point of the frame of image is updated as the mapping value after weighted average corresponding to the brightness value. The device of the invention comprises a brightness enhancement module which further comprises a nonlinear curve tensioning table memory unit, a histogram balance mapping table calculation unit, a brightness mapping table calculation unit and an image brightness enhancement mapping unit. The method and the device of the invention can improve the visible effect of the video images under the condition of low illumination and normal illumination.

The invention belongs to the technical field of computers, relates to a personalized recommendation technology finished by a computer and discloses three recommendation methods based on the neighborhood. The method includes that attributes of users are analyzed through modeling of interests and hobbies of the users, then similar user groups are found for target users, and objects which the users may be interested in are recommended for the users. During object recommendation, the method considers observed behavior data such as scoring and purchasing information, and also considers missed scoring information, namely hidden feedback information. Meanwhile, the method fully uses similarity of the interests and the hobbies of the users in social networks to model the interests of the users, considers effects of hidden feedback on results and effectively improves the recommendation precision.

The invention discloses an image processing method, device and terminal. According to the scheme, when an image is processed, the overexposure region, provided with the target color, in the image is judged according to color components of pixels in the image, then, the color components of the pixels in the overexposure region are corrected according to a preset correction model, and through correction, the spectral characteristic of the overexposure region can be changed, the color of the image can be restored to a certain degree, and the problem of image distortion is solved.

The invention provides a display driving method used for driving a 3D (three-dimensional) display device. The display driving method includes: dividing each of a first view and a second view to be displayed, into multiple theoretical pixel units, and determining a color component of each color in each theoretical pixel unit; for each sub-pixel of each view, determining brightness of the sub-pixel according to the color component of the color of the sub-pixel in the theoretical pixel unit which is covered by the rectangular sampling area corresponding to the sub-pixel and which the view belongs to. Midpoints of lines of the center of each sub-pixel and centers of adjacent like sub-pixels are both on the edge of the rectangular sampling area which the sub-pixel corresponds to; the like sub-pixels of the sub-pixel refer to those belonging to same color of the same view. The display driving method has the advantage that no sampling overlapping occurs during complete sampling of a whole display area, and thus, the problem of image distortion caused by failure of complete sampling or by sampling overlapping can be avoided.

The invention discloses an automatic geometric correction and orthorectification method for multispectral remote sensing satellite images of a mountainous area. The method comprises the following steps of: selection and splicing of reference images; automatic selection of object points with same names; screening of the object points with same names, and geometric correction and orthorectification for correcting the images; precision evaluation; and output of the images. The multispectral remote sensing satellite images of the mountainous area, such as images of China domestic environment and disaster monitoring small satellite (with the model HJ-1A / B), have the characteristic of serious geometric distortion, but the automatic geometric correction and orthorectification method can be used for performing the orthorectification on the multispectral remote sensing satellite images of the mountainous area in mass and generating residual error reports of the coherent images by adopting a concept of the object points with same names to implement the geometric correction and orthorectification. The automatic geometric correction and orthorectification method has the advantages of high efficiency and precision, is very efficient when being used for processing the multispectral remote sensing satellite images with mass data of the mountainous area, can remarkably save manpower and material resources needed by the conventional remote sensing image processing process, and particularly is beneficial to the processing of the images of the China domestic environment and disaster monitoring small satellite.

The invention relates to the fields of computer graphics, system software, computer networks and the like, in particular to a multi-projection autocorrection display system based on a camera. A multi-projection autocorrection display method comprises the steps of utilizing structured light to automatically perform geometrical position correction on a projection picture, performing color correction on the projection picture to reduce influence of background textures and utilizing a color enhancement technology to improve observation experience of the projection picture. An independent geometrical correction and color correction technology is integrated together under a multi-projection environment to solve the problems of projection picture distortion caused by projection background textures and projection picture splicing failure caused by movement of a projector. The invention further discloses an independent geometric correction subsystem, a background texture color correction subsystem and a multi-projection display subsystem for achieving the multi-projection autocorrection display system. The technical scheme is universally suitable for the multi-projection autocorrection display system aiming at projector movement and projection background screen textures and platform support can be provided for a high-resolution and large display screen projection display system which enables people to have a strong immersion feeling.

The invention combines a wavelet lifting process and a difference process and provides an integratable fast algorithm for denoising electrocardiosignal and identifying QRS waves. The invention provides a method for denoising a weighted threshold value and solves the problem of signal distortion after denoising by using a global threshold value. The invention proposes to realize the lifting transformation of an electrocardiosignal by using a DB4 first-order derivative, avoid a wavelet lifting and re-decomposing process of the denoised signal and speed up the identification of QRS waves by combining the difference process in a DB4 wavelet lifting transformation process; meanwhile, an improved self-adaptive threshold updating method is adopted to improve the accuracy of QRS wave identification. In the invention, both the wavelet lifting process and a difference process, which are adopted, have the characteristics of high computing speed, low memory space occupation and capacity of realizing integer operation; therefore, the integrated application of the algorithm can be realized easily on the conventional hardware platform and can be realized easily in applications of computers and large processors.

An ultrasound gray-scale imaging system and method. The system comprises a probe (1); a transmission circuit (2) for exciting the probe (1) to transmit non-focused ultrasound beams to fluid; a receiving circuit (4) and a beam-forming module (5) for receiving echoes of the non-focused ultrasound beams and obtaining non-focused ultrasound echo signals; a signal processing module (6) for obtaining fluid display data after performing signal detection and enhancement process on the multi-group of non-focused ultrasound echo signals; an image processing module (7) for performing data conversion on the fluid display data and obtaining a B mode ultrasound image sequence; and a display (8) for displaying the B mode ultrasound image sequence to present the visual effect of fluid dynamic flow. A plurality of scanning lines even the whole image can be obtained for one time by utilization of non-focused wave or plane wave emission, time resolution of the ultrasound image can be largely improved, and the distortion problem when high-speed blood flow is displayed by traditional gray-scale blood flow imaging is solved.

The invention provides a shift register and a drive method thereof. The shift register comprises first to fifth transistors, wherein the grid electrode of the first transistor is connected with an output end; the drain electrode of the first transistor is connected with a first level signal end; the source electrode of the first transistor is connected with the drain electrode of the second transistor and the grid electrode of the fourth transistor; the grid electrode of the second transistor is connected with a first clock signal end; the source electrode of the second transistor is connected with a second level signal end; the grid electrode of the third transistor is connected with the first clock signal end; the source electrode of the third transistor is connected with an input end; the drain electrode of the third transistor is connected with the grid electrode of the fifth transistor; the drain electrode of the fourth transistor is connected with the first level signal end; the source electrode of the fourth transistor is connected with the output end; a first capacitor is connected with the grid electrode and the drain electrode of the fourth transistor; the source electrode of the fifth transistor is connected with a second clock signal end; the drain electrode of the fifth transistor is connected with the output end; a second capacitor is connected with the grid electrode and the drain electrode of the fifth transistor. When the output end needs to be kept, stable first level signals are always obtained from the first level signal end, so that the problem of distortion of output signals is prevented.

The present invention relates to the digital image processing technology, especially to a water level identification method based on binary coding character staff gauge and image processing. The water level identification method based on the binary coding character staff gauge and the image processing comprises: extracting the binary coding character staff gauge image key pixel, performing binary coding character staff gauge tilt correction through adoption of the Radon conversion algorithm; determining the left, the right, the upper and the lower edges of the binary coding character staff gauge; extracting the binary coding character staff gauge scale line; performing the location and the segment of the binary coding character representing the staff gauge measuring range; performing the binary coding character staff gauge measuring range identification through combination of the Hopfield nerve network and the template matching; and realizing the resolving of the water level value through adoption of the mathematical relationship of the binary coding character staff gauge scale line and the binary coding character staff gauge measuring range. The water level identification method based on the binary coding character staff gauge and the image processing is safe, efficient and small in investment.

The invention discloses a narrow-band imaging endoscope device which comprises a light source structure, an endoscope structure, an image processing module, a synchronous irradiating assembly and a spectrum light splitting assembly. The light source structure irradiates at least one beam of illuminating light provided with regulated wavelength frequency bands on detected tissue. The endoscope structure photographs an image of the detected tissue irradiated by the illuminating light provided with the regulated wavelength frequency bands. The image processing module processes the image photographed by the endoscope structure. The synchronous irradiating assembly irradiates the illuminating light emitted by the light source structure on the surface of the detected tissue synchronously. The spectrum light splitting assembly splits the light reflected back by the detected tissue and then inputs the light into the image processing module. The narrow-band imaging endoscope device effectively solves the problem that due to motion of the detected tissue, a narrow-band image is distorted, the structure of the endoscope device is simplified, the reliability of the endoscope device is improved, and consumed energy is reduced.

The present invention discloses a rendering method of an ambient occlusion image, a method for generating an effect image and an apparatus. The rendering method includes the following steps that: a rendering model located in a camera space is obtained; each pixel of the rendering model in the camera space is projected to a screen space through perspective transformation; the ambient occlusion value of each pixel in the screen space is calculated; and the ambient occlusion image is generated according to the ambient occlusion value of each pixel. According to the rendering method provided by the technical schemes of the invention, the pixels of the rendering model in a scene are projected to the screen space from the camera space; the ambient occlusion values of the pixels in the screen space are calculated; and therefore, a frequent space transformation process is omitted, the number of the instructions of a GPU during operation can be saved, and the operation efficiency of the GPU canbe improved.

The invention discloses a spark platform based space data parallel calculating system and method. The system is used for parallel calculation of mobile conversation data, and comprises an index and storage layer, a query and operation layer and an API layer; the index and storage layer is configured to read a space data set to be processed from a spark cluster and stores the space data set, space data stored in the space data set is the mobile conversation data, and a space index is established for the space data set to be processed; the query and operation layer is configured to receive a space operation request of the API layer, makes responses to the space operation request, realizes space operation of the concentrated mobile conversation data in the space data set to be processed, and back feeds a result after space operation to the API layer; and the API layer receives the input space operation request through a space operation interface, transmits the input space operation request to the query and operation layer, and receives and outputs the result after space operation of the query and operation layer.

The invention is suitable for communication fields and provides a method, a system and an IAD (Integrated Access Device) for processing a voice message. The method comprises the following steps of: intercepting a message voice pack of a remote user in a PSTN (Public Switched Telephone Network) network or an IP (Internet Protocol) network by the IAD; extracting voice data in the voice pack by the IAD; and storing the voice data into a local voice mail database by the IAD after preprocessing the voice data. According to the method, the system and the IAD for processing the voice message, through a manner that a voice mail is arranged in the IAD, a method for accessing the voice mail by three manners including a remote phone, a local phone and a Web page is realized, the requirements of different users on voice mail services on various occasions can be met, and the dependence of a pure software voice mail on a PC (Personal Computer) machine can be removed.

The invention discloses a water level gauge positioning and water level measuring method based on image processing, wherein the water level gauge positioning method comprises the following steps: calculating the longitudinal inclination angle of a mark rod main body of a pre-extracted water level gauge image; obtaining a water level gauge main body image after inclination correction by adopting arotation correction technology according to the longitudinal inclination angle of the mark rod main body; correcting perspective distortion by using a calibration point technology for the main image of the water level gauge after inclination correction; using a projection method to carry out adjacent pixel repair on a missing value part in the distortion-corrected image; carrying out accurate target clipping on the repaired image according to the coordinate equation of the left and right dividing lines; the starting position of the water level gauge and the position of the boundary line with the water surface are identified and the main body position of the water level gauge is cut according to the starting position and the position of the boundary line with the water surface. According tothe water level gauge positioning and water level measuring method based on image processing, the distortion correction is carried out on the water level gauge image after the inclination correction,the distortion problem caused by the non-parallel lateral boundary of the target caused by the viewpoint selection angle of the image is solved, and the precision of target extraction is improved.

The invention relates to a histogram local image contrast enhancing method and a histogram local image contrast enhancing device. After the histogram distribution of one image or video image is obtained, a gray space of a non-key-brightness region of a histogram is compressed by adopting a mode of selecting the brightness range, so that the pixel of the non-key-brightness region is extruded to a small range; the pixel in a key-bright region can obtain a greater brightness gray value equalization space; then, the gray range of an image key block is expanded through specific HS (Histogram Stretching) based method or HE (Histogram Equalization) based method technology; more obvious contrast enhancing and image sharpness improving effects can be obtained; and the problem of distortion of contents of the whole image due to simultaneous distribution out-of-balancing of the brightness gray value of the pixel in other regions of the image or the video image when the brightness gray value of a local part of the whole image or the video image needs to be enhanced in the prior art is solved.

The invention relates to a method for splicing maskless digital projection lithography pattern. The method comprises the steps of S1 segmenting a pattern to be etched to obtain multiple segmented frames of sub-pattern, wherein each frame of sub-pattern is of same size; S2 setting a template size which is the same with the size of each frame of sub-pattern; S3 multiplying each segmented frame of sub-pattern by the template to obtain a boundary splicing region of the sub-pattern, and employing a gray modulation template to modulate the gray value of the boundary splicing region to obtain the modulated sub-pattern; S4 carrying out exposure on the modulated sub-pattern frame-by-frame with digital micromirror display to realize the splicing of the reproduction transfer of the modulated sub-pattern which is displayed by the digital micromirror to a substrate. The method provided by the invention can fairly solve the splicing problem which exists when a pattern with a large area is etched, thus the etching quality of the digital projection lithography pattern is improved.

Provided is an apparatus for integrally encoding and decoding a speech signal and an audio signal. An encoding apparatus for integrally encoding a speech signal and an audio signal, may include: a module selection unit to analyze a characteristic of an input signal and to select a first encoding module for encoding a first frame of the input signal; a speech encoding unit to encode the input signal according to a selection of the module selection unit and to generate a speech bitstream; an audio encoding unit to encode the input signal according to the selection of the module selection unit and to generate an audio bitstream; and a bitstream generation unit to generate an output bitstream from the speech encoding unit or the audio encoding unit according to the selection of the module selection unit.

The invention discloses a method for excavating a weak surrounding rock tunnel under water-rich high-ground-stress conditions. The method includes the following steps that firstly, advanced small pipe grouting and pre-supporting are carried out in advance before tunnel excavation; secondly, excavation is carried out according to a three-step seven-excavation-surface method; thirdly, C35 reinforced concrete is adopted in the secondary lining process, wherein the C35 reinforced concrete is 65cm in inverted arch thickness and 55cm in arch wall thickness and comprises phi22@20cm annular main ribs, phi14@20cm longitudinal steel ribs and phi8 stirrups. The method can effectively avoid the steel frame torsion and cracking phenomenon, thereby guaranteeing normal tunnel construction, accelerating construction and improving construction safety and engineering quality.

The invention discloses a filtering method for intra-frame and inter-frame prediction. For pixel values obtained after prediction, whether to filter prediction blocks or not is adaptively selected through RDO (Rate distortion optimization) decision; filters are established based on a generalized Gaussian distribution function; different filters are employed for the prediction blocks of different sizes; the prediction blocks of various sizes are trained to obtain filter parameters. At a coding end, RDO is carried out on each coding unit; intra-frame prediction or inter-frame prediction is carried out on each coding unit; the prediction blocks are filtered through utilization of the filtering method provided by the invention; and whether to employ prediction block filtering or not is determined through RDO decision. At a decoding end, for different prediction block sizes, different filtering coefficients are set; and decoding is carried out according to marks. The distortion problem of the prediction blocks is solved. The prediction precision is improved. The coding efficiency of intra-frame and inter-frame prediction blocks is improved.

The electronic throttle gate includes valve plate, shaft, casing and gas channel, and the valve plate is fixed to the shaft capable of rotating inside the gas channel. One stepped motor drives the shaft of the electronic throttle gate to rotate, and one rotation position indicator includes at least one triggering signal generator or one rotation position blocking mechanism. The present invention has raised throttle gate shaft position controlling precision, long service life, low cost, open-looped control of shaft position and less control time of the electric control unit.

The embodiment of the invention provides a shooting method and a mobile terminal. The method comprises the following steps: receiving a sliding input on the preset control in a shooting preview interface by a user; controlling a camera to perform rotary shooting in response to the sliding input; acquiring N frame images collected by the camera in the rotary shooting process; performing image processing on N frame images to output panoramic, wherein the first frame image is one frame image collected by the camera at a sliding start location of the sliding input; the N-th frame image is one frame image collected by the camera at a sliding ending location of the sliding input; the panoramic data comprises the image or a video, and N is integer greater than one. Through the shooting method provided by the embodiment of the invention, the problem that the torsion, the warping, the distortion and the morphing are existent in the panoramic image since the mobile terminal handheld by the useris easy to jitter in the movement in the existing panoramic image shooting process can be solved.

The invention provides an image correcting method for a projection terminal and the projection terminal. The image correcting method comprises the steps that the horizontal deflection angle of the projection terminal is acquired, and a to-be-projected image of the projection terminal is rotated and corrected according to the horizontal deflection angle and the projection optical axis of the projection terminal. According to the image correcting method for the projection terminal and the projection terminal, the horizontal deflection angle of the projection terminal is acquired, the to-be-projected image is rotated according to the horizontal deflection angle, and therefore the problem that the projection picture is distorted when the projection terminal is rotated with the projection optical axis as the center is solved; meanwhile, due to the fact that only to-be-projected image rotating is referred in the correcting process, a complex graph correction algorithm is not needed to carry out correction, cost is low, the correcting speed is high, the power consumption and the produced heat are low, and the using experience of a user of a portable terminal is greatly improved.

The invention discloses a video enhancing method based on video frame self-adaption. The method comprises video frame self-adaption parameter adjustment and video frame enhancing processing. The invention also discloses a video enhancing system. The system comprises a parameter adjusting module and an enhancing processing module. According to the video frame self-adaptive video enhancing method based on an airspace point algorithm and the video enhancing system built based on the method, through starting from a performance and a video continuous frame enhancement flexibility, the performance is ensured; moreover, adjusting parameters are selected according to the video contents self-adaptively; the problem of video frame distortion resulting from excessively improving too dark images or excessively reducing too bright images by directly using conventional methods such as histogram equal saturability enhancing is solved; the enhancing of the processed video under various environments such as indoor, outdoor, low illumination and high illumination environments, is more flexible; and compared with the original video, the processed video is more clear in detail and more abundant in contrast and saturability and has better eye watching feelings.

The invention relates to a continuous casting billet surface defect binocular scanning and deep learning fusion recognition method and a continuous casting billet surface defect binocular scanning anddeep learning fusion recognition system. The method comprises the following steps: extracting a three-dimensional morphology image of the surface of a continuous casting billet by adopting binocularlaser scanning imaging; positioning a region of interest ROI according to the depth information; generating defect recognition candidate boxes. The real defect discrimination and the type recognitionare carried out on the defect area in the candidate box by adopting a full-connection neural network. For real defects, the semantic segmentation is carried out by adopting a full convolutional neuralnetwork. The three-dimensional quantitative morphological information of the defects can be accurately identified by fusing binocular laser three-dimensional scanning imaging and deep convolutional neural network target recognition and semantic segmentation methods. The method belongs to the field of continuous casting billet quality detection and control in ferrous metallurgy.

The invention discloses a wide-angle lens. The wide-angle lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens sequentially from the object side to the image side. The first lens is a plastic aspherical lens with negative refraction power, the second lens is a biconvex plus lens with a plastic aspherical lens, the third lens is a glass spherical lens with positive refraction power, the fourth lens is a plastic aspherical lens with negative refraction power, the fifth lens is a plastic aspherical lens, and focal power of all the lens satisfies the condition that f5<f2<f1<f3<f4, wherein f1, f2, f3, f4 and f5 are focal power of the first, second, third, fourth and fifth lens respectively. The first lens and the second lens collect wide-angle rays by adopting a minus lens and plus lens combination mode, so that an included angle between an off-axis primary ray and an optical axis can be reduced; due to the large focal power of the third lens, thermal shift can be corrected by the aid of the glass material, focal length change generated by temperature shift can be compensated effectively, and the problem of thermal shift caused when the lens is applied to severe environments at high and low temperature and the like is solved.

The invention discloses an Android system based screen capture method and a terminal. The method comprises: receiving an input instruction, wherein the input instruction is used for requesting screen capture for a terminal installed with an Android system; obtaining version information and storage path information of the terminal, and comparing the version information with a preset version; if the version is higher than the preset version, further judging whether the terminal has a screen capture (Screencap) storage path or not; if the terminal has the Screencap storage path, reading screen data of the terminal according to the Screencap storage path; and compressing the obtained screen data to generate a screenshot corresponding to the screen data. According to the method provided by an embodiment, the version information and the storage path information of the terminal are analyzed, so that the data is ensured to be preferentially read from Screencap and the generated screenshot is ensured not to be distorted; and the screen data is compressed, so that the efficiency of the whole screen capture process is improved.

The invention belongs to the technical field of plastic processing, and particularly relates to a double-open type hollow profile frame stretch bending forming method. By successfully using a whole filler filling method for the first time, the deformation of a profile cross section is controlled, and the problem of filler falling is solved; the problems of profile twisting deforming and opening shrinkage caused by intermediate heat treatment are solved through an improved technological process. The stretching bending forming method has the main advantages that a frame is stretched and bent along a die, so that the distortion and twisting of the cross section are prevented, the tensile rigidity of components can be improved, the resilience is low, the residual stress is lower, the forming quality is higher, components with large relative bending radiuses can be controlled, the hand finish amount is small, and the production rate is high. A product processed and formed by using the method is formed and qualified for delivery, the assembly requirement is guaranteed, and a technology foundation is established for other subsequent products using profile stretching bending frames of the structure.