286results about How to "Avoid ghosting" patented technology

An OCT probe has a sheath to be inserted into a subject; and an optical system within the sheath, for changing the direction of light which propagates from a light source through an optical fiber to irradiate the light onto the subject through a transparent portion of the sheath, and for reflecting the light beam, which is reflected by the subject, to guide the light into the optical fiber. A light output surface, for causing the light to be output from the reflecting surface in a direction obliquely inclined with respect to the inner surface of the sheath, and a reflected light sheath entrance preventing portion, for preventing light reflected by the inner surface of the sheath from entering the optical fiber, are provided in the optical system. The reflected light sheath entrance preventing portion may be formed by providing a cut planar surface portion on the lens.

An OCT probe has a sheath to be inserted into a subject; and an optical system within the sheath, for changing the direction of light which propagates from a light source through an optical fiber to irradiate the light onto the subject through a transparent portion of the sheath, and for reflecting the light beam, which is reflected by the subject, to guide the light into the optical fiber. A light output surface, for causing the light to be output from the reflecting surface in a direction obliquely inclined with respect to the inner surface of the sheath, and a reflected light sheath entrance preventing portion, for preventing light reflected by the inner surface of the sheath from entering the optical fiber, are provided in the optical system. The reflected light sheath entrance preventing portion may be formed by providing a cut planar surface portion on the lens.

An intelligent monitoring and alarm method based on moving object detection has the following steps: step 1, picking up the grey scale information of a video signal; step 2, initializing a background matrix; step 3, carrying out background-based object detection; step 4, updating the background. The invention detects an initial sequence through a frame difference method and establishes the initial background according to the detection result; after the initial background is established, a background method is used to detect a moving object; the background model adopts a mean-based difference comparison method instead of a probability threshold value comparison method; the background updating is carried out in two parts, namely a foreground point part and a background point part. The method capable of automatically updating the background can detect the moving object in time with effectiveness and timeliness, thereby avoiding a 'ghost shadow' to a great extent. Furthermore, the invention can meet the requirements of multi-path real-time monitoring with simple operation and high speed.

The invention discloses a method, device and terminal for picture processing, and relates to the field of data processing. The method, device and the terminal enable shot pictured to be clearer, and picture processing efficiency is effectively improved. The method includes the steps of obtaining current ambient brightness for photographing and photographing movement speed of a target object, determining an exposure parameter and a gain parameter according to the current ambient brightness for photographing and the movement speed of the target object, and processing the picture of the obtained target object according to the exposure parameter and the gain parameter. The method, the device and terminal can be used in data processing technology.

A driving circuit is provided, which includes multiple shift register units, at least one scan control unit and at least one all-gate-on unit. An operation of the driving circuit includes a driving phase and a discharging phase. During the driving phase, the at least one scan control unit controls the shift register units to output multiple driving signals successively in a first direction or in a second direction, the first direction being opposite to the second direction. During the discharging phase, the at least one all-gate-on unit controls the shift register units to output multiple driving signals simultaneously. An array substrate and a display apparatus each including the driving circuit are further provided.

It is intended to provide magnetic toner that produces a stable image density in long-term use and can prevent ghosting under conditions of low-temperature and low-humidity. The present invention provides magnetic toner including magnetic toner particles each containing a binder resin, a magnetic material and a releasing agent, and silica fine particles, wherein the silica fine particles include silica fine particles A and B, the silica fine particles A have a number-average particle size of 5-20 nm as primary particles, the silica fine particles B are produced by a sol-gel method, and have a number-average particle size of 40-200 nm as primary particles, an abundance ratio of secondary particles of the silica fine particles B is 5-40% by number, and a coverage ratio X1 of the surface of the magnetic toner particles with the silica fine particles determined by ESCA is 40.0-75.0% by area.

A thermoplastic film for a laminated-glass pane having a non-linear continuous wedge insert in the vertical direction in some sections. The thermoplastic film has a continuous non-linear wedge angle profile having a first section, which has a wedge angle that is constant or that is variable at least in some sections in order to avoid double images in transmission. The nonlinear wedge angle profile also has a second section, which adjoins the first section. The second section has a variable wedge angle in order to avoid ghost images in reflection. The wedge angle profile has a third section, which adjoins the second section. The third section has a wedge angle that is constant or that is variable at least in some sections in order to avoid double images in transmission.

The invention relates to a method for making an ophthalmic lens intended to correct the visual acuity of a user, comprising the steps of determining the shape of a base optical corrective element, determining the profile of a phase element structure, said determination comprising the steps of defining a desired depth of focus of said ophthalmic lens; calculating the phase distribution to be created at the entrance pupil of the lens, selecting a phase distribution and performing an iterative calculation to obtain the depth of focus, finding the phase which minimizes the differences between the effective phase distribution and the desired phase distribution and of converting the phase data into geometrical data to define the profile of the phase distribution structure and juxtaposing the resulting phase element structure and the base optical corrective element.

A fruit grader based on image processing belongs to the technical field of agricultural machinery and comprises a loading mechanism, a batch-type multi-channel material transport mechanism, a continuous single-channel material transport mechanism, a sorting box and a fruit information collecting mechanism. The front end of the batch-type multi-channel material transport mechanism is provided with the loading mechanism, the upper part of the batch-type multi-channel material transport mechanism is provided with the fruit information collecting mechanism, and the tail part of the batch-type multi-channel material transport mechanism is in vertical connection with the continuous single-channel material transport mechanism which is connected with the sorting box. Due to the effective machinery design, the fruit grader based on image process disclosed by the invention effectively avoids the ghost phenomenon when images are collected without lowering the grading efficiency and effectively improves the grading precision and the grading efficiency by combining with a schedule control method.

An embodiment of the invention provides a digital heads up display system in order to solve the problem that a driver needs to roll eyes to observe road conditions and information on a front windshield glass or a diffusive imaging unit and consequently feels vision fatigue since an existing digital heads up display system directly images on the front windshield glass or diffusive imaging unit. The digital heads up display system mounted on a dashboard comprises a housing, a miniature projector and a concave mirror. The miniature projector and the concave mirror are assembled in the housing, and the optical length between the miniature projector and the concave mirror is smaller than the focal length of the concave mirror. The housing is provided with a projection outlet. Light reflected by the concave mirror is emitted through the projection outlet. Switching to and fro of eyeball focal length during driving is avoided, and the purpose of safety driving is achieved. After the images are zoomed out, more automobile information can be displayed on the heads up display system, so that the digital heads up display system is richer in content and more powerful in function. Besides, the digital heads up display system is simple in structure and easy to implement.

A laminated safety glass windscreen, which can also be used as a reflector in a HUD system, comprises at least first and second panes and a thermoplastic intermediate layer which joins these panes together. The cross-section of the intermediate layer is in the shape of a wedge, decreasing in thickness from top to bottom. The thermoplastic intermediate layer may be composed of two sheets, one of which is provided with a colored filtering strip and has a wedged cross-section conditioned by the appearance of this filtering strip. The other sheet has a wedged cross-section such that the two sheets together have the prescribed convergence angle for using the windscreen as a reflector.

An optical information recording medium having a structure in which irregular reflection of information light and recording / reproducing light from the reflective layer of an optical information record medium is prevented, thereby reducing the noise appearing on the reproduced image. The optical information recording medium for recording information by holography comprises a transparent substrate, a recording layer where information is recorded by an interference pattern, and a filter layer formed between the transparent substrate and the recording layer and adapted to transmit a light of a first wavelength and reflect a light of a second wavelength. The filter layer of the thus structured optical information recording medium transmits a light of the first wavelength (for example, red light) and reflects a light of the second wavelength (for example, green light). As a result, two lights of different wavelengths can be separated and used for different purposes without being influenced by each other.

A device for simulating visual gap seepage by magnetic fluid comprises a main body framework, wherein a camera is arranged in the main body framework and is hinged with a mobile auxiliary framework bya top universal ball on the main body framework, a visual rock sample is placed on an upper surface of a shearing counter-force rack by an expansion pressurization pad and comprises upper cover platetransparent resin and a conventional rock sample, a gap is formed between the upper cover plate transparent resin and the conventional rock sample, two side surfaces of the visual rock sample are connected with an inner side wall of the shearing counter-force rack by a hydraulic rod loading device, a stress sensor and a displacement sensor are arranged at the hydraulic rod loading device, and a paste / water injection pipe of a paste / water injection device is matched with the gap between the upper cover plate transparent resin and the conventional rock sample. With the device and method for simulating visual gap seepage by magnetic fluid, provided by the invention, the seepage rules under various conditions are researched by the magnetic fluid to simulate gap seepage conditions under conditions of multi-angle different confining pressure and yawing forces.

The invention relates to a method for determining the configuration of an ophthalmic lens intended to correct the visual acuity of a user, this method comprising the steps of determining the form of a base optical corrective element according to at least one of the following parameters: the desired power of the ophthalmic lens; the desired resolution or modulation transfer function MTF; the desired extent of the correction of the spherical aberrations (SA) of said ophthalmic lens; the desired extent of the correction of the spherical aberrations (SA) of the cornea of the user; the desired extent of the correction of the chromatic aberrations of said ophthalmic lens; the desired extent of the correction of the chromatic aberrations of the cornea of the user; the desired extent of the correction of high order aberrations (HOA). Furthermore the method comprises a step of determining the profile of a diffractive phase element (DPE) structure, said determination comprising the steps of defining a desired depth of focus of said ophthalmic lens; of calculating the phase distribution to be created at the entrance pupil of the lens, from the desired depth of focus; of finding the phases which minimize the differences between the effective phase distribution and the desired phase distribution and of converting the phase data into geometrical data in order to define the profile of the diffractive phase distribution structure. The method finally comprises juxtaposing the resulting diffractive phase element structure and the base optical corrective element.The invention also concerns a lens obtained according to the above mentioned method as well as a method for the producing such a lens.

The present invention provides an optical element capable of preventing a ghost in the use for a sensor such as a CCD or CMOS. In the optical element including an optical function surface of high surface accuracy and a flange formed around the surface, the optical function surface having an optical surface diameter somewhat larger than an effective diameter in order to secure high surface accuracy for the effective diameter, a parting diameter of a molding die is made larger than the optical surface diameter and a parting position is disposed outside the optical surface diameter.

A face image synthesis apparatus includes a storage device (2) and an arithmetic processing unit (1). The storage device (2) stores a plurality of face images and a plurality of feature points including an origin. The plurality of feature points are set to each of the plurality of face images. The arithmetic processing unit (1) generates a plurality of deformed face images by deforming the plurality of face images so that the origin and the other feature points thereof are matched to each other and generates a synthesized face image from the deformed face images.

A CL-type rear view mirror able to automatically regulate light is composed of LCD, photosensitive device, power supply and casing. Its advantages are low drive voltage, high response speed to electric field, wide visional angle and high contrast.

The invention relates to an HUD luminance improving device, namely, a high-luminance HUD optical system based on laser micro projection. The HUD luminance improving device comprises an image analysis system, an image receiving system and an eyepiece system. The HUD luminance improving device is characterized in that a red laser device, a green laser device and a blue laser device are used as signal light sources; an optical thin film is introduced into the eyepiece system, so that corresponding red light, corresponding green light and corresponding blue light are reflected, and light with other wave lengths directly penetrates through the optical thin film or part of the light penetrates through the optical thin film, wherein the corresponding red light, the corresponding green light and the corresponding blue light are emitted by the laser devices. The HUD luminance improving device has the high-luminance information display effect and enables a high-definition external environment display view to be obtained.

The invention discloses a video stitching method for a sports scene. The video stitching method for the sports scene includes that firstly, using an improved congruence-transformation invariant-feature algorithm to solve common feature points in different videos to improve feature extraction speed; secondly, using an iteration method to calculate a minimum brightness difference route to dynamically regulate a stitching seam to process problems when a moving object passes through the overlapped region between stitching frames so as to avoid the double image of the moving object after passing the overlapped region; finally, using a feature-based video tone normalization method to eliminate the color difference between video frames. The video stitching method for the sports scene can be broadly used for the video monitoring for the large sports scene; the video stitching method for the sports scene improves the adaptation of the video stitching to different environments, solves the common problems of the video stitching and directly and greatly drives the improvement of the video stitching algorithm.

The invention discloses an imaging method of an image sensor, an imaging device and an electronic device. The image sensor includes a photosensitive pixel array and an optical filter arranged on the photosensitive pixel array, the optical filter includes a filtering unit array, and each filtering unit and a plurality of adjacent photosensitive pixels in the photosensitive pixel array which are covered by the filtering unit jointly form a merged pixel. The imaging method includes the steps of: reading an output of a photosensitive pixel array, and extracting pixel values of photosensitive pixels of different merged pixels from a single frame of high-resolution image that is read to be combined, thereby obtaining multiple frames of low-resolution images; and synthesizing the multiple frames of low-resolution images. The imaging method only requires one-frame output of the image sensor to obtain a high-dynamic range image through synthesis, reduces time for waiting for data frames, and can prevent generation of ghosting.

A zoom lens unit includes: a positive first lens group; a negative second lens group; and a positive subsequent lens group as a whole, the subsequent lens group includes a third lens group, and an aperture stop is disposed between the second lens group and the third lens group, and a lens construction including the first and the second lens groups satisfies the condition (1): 1.0<ri / ri+1<5.0, in which ri and ri+1 are curvature radii of lens surfaces Si and Si+1 in the lens construction, respectively, the lens surfaces Si and Si+1 being “i”th and “i+1”th lens surfaces, respectively, counted from the object side, and a reflectivity-reducing treatment adapted to reduce intensity of a ghost image is performed on each lens surface forming at least one of pairs of lens surfaces satisfying the condition (1).

The embodiment of the invention provides an image processing method and a mobile terminal. The image processing method comprises: obtaining the first automatic focusing position of a color camera lens; arranging the focusing position of a black and white camera lens to be the first automatic focusing position; obtaining a first color image and a first black and white image synchronously captured by the color camera lens and the black and white camera lens at a first moment at the first automatic focusing position; obtaining a second black and white image captured by the black and white camera lens at a second moment at a second automatic focusing position; and obtaining a color result image through composition by means of a presetting composition algorithm according to the first color image, the first black and white image and the second black and white image. The image processing method provided by the embodiment of the invention is able to avoid the conditions that images generate ghosting caused by non-synchronous time and result images are intelligible caused by intelligible input source images.

A vehicle head-up display device for preventing ghost images, includes a base, a display module and a lid, wherein the lid is translucent material, a lower thickness of the lid is smaller than an upper thickness, the display module is used to project image information on the lid. By the composition of the above elements, the variation in thickness that the upper of the lid is thick and the lower of the lid is thin is used to generate the refraction of the prism, to let the position of ghost images be overlapped with real images, to thereby effectively solve the problem of ghost images.

The invention belongs to the technical field of mobile terminals, and provides a high-dynamic-range image acquisition method, a device, a mobile terminal and a computer-readable storage medium, the method comprises: when a moving object exists in a shooting scene, shooting N frames of images on the shooting scene, wherein N is an integer greater than 1; Acquiring a quality evaluation value of eachof the N frames of images, wherein the quality evaluation value indicates a picture quality of the image; If there is an image whose quality evaluation value is higher than a preset threshold value in the N-frame image, obtaining a target image according to the image whose quality evaluation value is higher than the preset threshold value, wherein the target image is a high dynamic range image. With the present application, ghost shadows in high dynamic range images can be avoided, and picture quality of the high dynamic range images can be improved.

The invention relates to a device to analyze an infrared thermal picture of a person under test. Currently, infrared thermal pictures can not be treated automatically after being inputted into a computer; the pictures that are provided can not fully reflect or predict the functional changes of the organs of the person under test; and the creativity of certain imaging technology leads to external or internal trauma to the patient. The device makes use of the picture of the person under test, inputs the picture into the computer, converts the picture into digital temperature picture, analyzes the converted digital temperature picture through an analyzing program, and compares the analysis result with the data bank of the computer to get the health state of the person under test. The method can detect diseases at early stage before the appearance of the symptoms, provides a plurality of set of data and information through thermal picture scanning, and gives a full estimation to the health state of the person under test. A converted three-dimensional hotspot picture or energy picture is direct and convenient to analyze and diagnose. The device changes the motion mode of an infrared video camera, and adopting the motion mode of directly moving up and down, the device avoids the occasion of false contour of the picture during the scanning process.

The invention discloses a real-time video stitching method based on a seam line. The method comprises the steps that the first frames of two monitoring videos are read respectively as a template frame; feature points on the template frames are extracted, and feature point matching is carried out to initially screen matching point sets; an RANSAC (random sampling consistency) algorithm is used to screen out a reliable matching point set to calculate a transformation matrix; the transformation matrix is used to register two frames of images; an overlapping area, non-overlapped areas and the sizeof a final complete image are calculated according to coordinates before and after corner point transformation; the seam line is calculated according to the color intensity and geometric structure ofthe overlapping area; the overlapping area is stitched; non-overlapped areas are spliced; a spliced complete image is calculated; and subsequent frames of the videos are spliced through the acquiredtransformation matrix and the seam line, and a CUDA platform is used to accelerate the process in parallel.

A reflection of unnecessary light, which should be prevented, can be suppressed, and occurrence of stray light can be reduced using a member having an antireflection structure, comprising a plate-like portion 2, and an aperture portion 3 formed in the plate-like portion 2, wherein the antireflection structure having an aspect ratio of 1 or more and comprising structural elements arranged in an array form at a period smaller than the shortest wavelength of light, the reflection of which should be prevented, is formed on an inner wall 4 of the aperture portion 3.

The invention discloses a method, a device and equipment for acquiring a high-dynamic range (HDR) image based on double cameras. The method comprises the following steps: obtaining a normal exposure image under a current shooting scene; determining an underexposure compensation value and an overexposure compensation value under the current shooting scene; controlling the first camera to obtain anunderexposure image and the second camera to obtain an overexposure image according to the underexposure compensation value and the overexposure compensation value; performing fusion processing on thenormal exposure image, the underexposure image and the overexposure image and generating the high-dynamic range under the current scene. The method disclosed by the invention has the beneficial effects that through simultaneously and respectively shooting images of different levels of exposure required by the HDR image by utilizing the double cameras, not only is the shooting time of the HDR image shortened, but also the ghosting of the finally-synthesized HDR image can be effectively avoided, so that the effect and the quality of the high-dynamic range image are improved, and the user experience is improved.

A camera module is composed from a lens unit including at least one lens, a barrel provided with the lens and having a barrel opening, and a lens holder for holding the barrel; and an image pickup device portion provided under the lens unit and having an image pickup device housing space in which an image pickup device is hermetically provided. The barrel opening of the barrel has an annular edge which serves as a diaphragm, and the annular edge of the barrel opening has a lower annular corner portion which is located on the side of the lens, wherein the lower annular corner portion of the annular edge is formed so as to have a rounded cross-sectional shape and staining is formed on the lower annular corner portion.