90results about How to "Suppress ghosting" patented technology

The present invention provides a camera module night scene camera processing method and device, an electronic device and a storage medium, belong to that field of imaging technology. The method comprises the following steps: detecting the current jitter degree of the image pickup module in the night scene shooting mode; determining the number of images to be captured and the reference sensitivitycorresponding to each frame of images to be captured according to the current jitter degree of the image capturing module; according to the illuminance of the current shooting scene and the referencesensitivity corresponding to each frame of the image to be captured, determining the exposure time corresponding to each frame of the image to be captured; according to the corresponding reference sensitivity and exposure time of each frame of the image to be collected, sequentially collecting and synthesizing multiple frames of images to generate target images. Thus, the method not only improvesthe dynamic range and overall brightness of the night scene image pickup, effectively suppresses noise in the image, but also suppresses ghost shadow caused by handheld shake, improves the quality ofthe night scene image pickup, and improves the user experience.

In order to provide an electrophotographic photosensitive member with which a ghost is suppressed even under a low temperature and low humidity environment, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member, the electrophotographic photosensitive member has a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer and comprising a charge generating material and a hole transporting material, wherein the undercoat layer comprises a particular amine compound.

The invention discloses a ghost quick-inhibition method based on a ViBe algorithm. The method is characterized by comprising the following steps: step SS1, inputting a video sequence, detecting the video sequence by using a ViBe algorithm, judging whether the video sequence is a background or not, updating a background model if the video sequence is a background, or going to step SS2; step SS2, performing ghost detection on the video sequence in step SS1, judging whether the video sequence is a ghost, judging the video sequence as a background and updating the background model if the video sequence is a ghost, or going to step SS3; and step SS3, judging the video sequence as a foreground and outputting the foreground. By adopting the method of the invention, that a background model does not absorb a transitorily still target quickly is ensured while a ghost can be inhibited quickly.

The invention provides a motion object real time extraction method of a Vibe improvement algorithm based on combination of graph cut. The motion object real time extraction method comprises steps of performing retreatment on video orders through a Vibe background modeling algorism, dividing the pixels in the image into a foreground, a background and an unknown type and establishing an incompletion ternary diagram, obtaining an incompletion ternary diagram according to the Vibe algorithm, establishing mapping from an image to the diagram, constructing a goal energy function by combining with a membership degree of the foreground and the background and the similarity degree characteristics of the adjacent pixels, obtaining the gather of the sides and the points which can minimize the energy function through the max-flow min-cut theory and performing image division based on the min-cut, performing a post-processing based on the division result of the graph cut algorithm, marking the motion object in the original image by an outer-connected rectangle, and further detecting the motion object through the modeling match. The invention improves the robustness and accuracy of extracting the motion object.

Provided are a liquid crystal display device that suppresses occurrence of drop marks during production without degrading various properties, such as dielectric anisotropy, viscosity, nematic phase upper limit temperature, rotational viscosity (γ1), and ghosting property, and a method for producing the liquid crystal display device. A liquid crystal display device 10 of the present invention includes a liquid crystal composition layer 13 sandwiched between a first substrate 11 and a second substrate 12 and vertical alignment films 16 and 17 that contain a polymer of a polymerizable compound having a polyimide skeleton as a main chain and a crosslinkable functional group as a side chain. The liquid crystal composition constituting the liquid crystal composition layer 13 contains compounds represented by general formulae (I) and (II).

The present invention relates to: a solid-state imaging element which is capable of providing a solid-state imaging element that comprises a polarizing element which has simple configuration and structure based on wire grid polarizer technology; a solid-state imaging device; an imaging apparatus; and a method for producing a polarizing element. The solid-state imaging device comprises a plurality of solid-state imaging elements (41) each of which comprises a photoelectric conversion element (61) and a polarizing element (70) that is arranged on the light incident side of the photoelectric conversion element (61). The solid-state imaging device comprises two or more kinds of polarizing elements (70) that have different polarization directions, and each polarizing element has a lamination structure wherein a stripe-patterned reflective layer (71), an insulating layer (72) that is formed on the reflective layer (71) and a light absorption layer (73), which is composed of a plurality of pieces (73') that are formed on the insulating layer (72) so as to be separated from each other, are laminated from the photoelectric conversion element side.

The invention provides an image mosaic method and device and a storage medium. The method comprises the following steps: positioning the overlapping region of two images to be stitched, obtaining theinformation of the overlapping region, dividing the two overlapping sub-images into blocks in the boundary line of the overlapping region, obtaining the pair of the sub-images of the overlapping region, and directionally registering the feature points to obtain the feature point set of the overlapping region; According to the optimized TPS thin plate spline function, the feature point set is calculated, two deformation images to be fused are obtained, the deformation sub-image pairs corresponding to the boundary line of the overlapping region in the deformation image to be fused are obtained,the pixel position information of the deformation sub-image pairs is mapped to the unit circle, and the smooth transition process is carried out, so as to obtain the overlapping region image. The invention extracts feature points in the overlapping area, which improves the efficiency of feature extraction and the accuracy of matching. Using the optimized TPS function to deform the original image,the problem of ghost and deformation is restrained effectively. Adaptively smoothing pixel value of unit circle solves the problem of chromatic gap.

The invention provides a video splicing system and method for a binocular robot, and belongs to the technical field of robot visual images. The system comprises a robot video frame acquisition module,an image splicing system processing module, a wireless transmission module and a terminal display module, wherein the image splicing system processing module comprises an overlapping area positioningmodule, a feature point parallel directional registration module, an image color correction module, an image deformation module, a dynamic planning suture line module and an image smooth fusion module; the system can carry out system, video frame coincidence area positioning, feature point directional registration, image color correction, image deformation, dynamic suture line planning and imagesmooth fusion processing on an image frame collected by a robot in a binocular mode to obtain high-quality spliced video; the visual field of the robot is greatly expanded, purposes of movement, positioning, identification and the like can be better completed, and the image frame splicing speed and the splicing efficiency are improved.

The invention discloses a method for correcting the infrared focal plane heterogeneity based on a sigma filter. According to the method, sigma filter with the template size of 5*5 is performed on an image after linearity correction, self-adaptive adjustment of the iteration step length of a correction parameter and detection and replacement of abnormal pixels (bad pixels, impulse noise and the like) are completed when edge-preserving smooth filter is achieved, motion detection is achieved by using a change reference image, and only when the difference between the corrected image and the change reference image is larger than a change threshold value, update of the self-adaptive iteration step length is performed on the heterogeneity correction parameter. The sigma filter is applied to correction of the infrared focal plane heterogeneity, the heterogeneity parameter estimation error is reduced by using the edge preserving characteristic, the 'ghost objects' inhibiting capacity is strengthened, simultaneously, the self-adaptive iteration step length and detection and replacement of the abnormal pixels are achieved through the sigma filter, the computational complexity is low, and the method is suitable for hardware circuits.

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.

An imaging optical system a high quality image may be implemented by determining the optimum design conditions for suppressing the generation of ghost while holding uniform and sufficient light using a simulation method. In the imaging optical system having a slit, the requirements for removing the stray light are the inclination of a lens arrangement direction, the slit width, the lens pitch, the view angle, and the height of the light-shielding wall. The slit location, the lens thickness, and the lens row width do not affect the stray light removal, but affect the brightness. In the imaging optical system having no slit, the essential requirements for removing the stray light are the height of the light-shielding wall and the lens pitch. The lens thickness and the lens row width do not affect the stray light removal, but affect the brightness.

An optical imaging system suppresses the generation of red-toned ghosting in an image particularly when there is a background light or when a strong light source shines on the screen. The optical imaging system has a reflection-type infrared cut filter comprising a multi-layer film, color filters that selectively transmit light according to the wavelength, and an imaging element. Ghosting is suppressed to inconspicuous levels by adjusting the transmittance of the color filters and the infrared cut filter, and by setting the spectral characteristics of the color filters.

An optical system includes, in order from an object side, a first lens group having positive refractive power, a second lens group having negative refractive power, and a third lens group having positive refractive power. The second lens group is moved upon carrying out focusing from an infinitely distant object to a close object, at least a portion of the third lens group is moved in a direction including a component perpendicular to an optical axis, and given conditional expressions is satisfied. Accordingly, an optical system excellently suppressing variations in aberrations generated upon vibration reduction, an optical apparatus equipped therewith, and a method for manufacturing the optical system are provided.

The invention provides a display imaging system, a display imaging method and a head-up display device. The display imaging system comprises the components of an imaging window which comprises a transflective film; and an image source which is used for transmitting s polarized light that is incident to the transflective film; wherein the average reflectivity of the transflective film to the s polarized light is higher than 50%, and the imaging window is used for transmitting ambient light. The display imaging system, the display imaging method and the head-up display device have advantages of reducing a requirement for brightness of the image source, eliminating ghosts, realizing a better visual effect and reducing cost.

The invention relates to an electrophotographic photoreceptor, a process cartridge and an image forming apparatus, and aims to provide an electrophotographic photoreceptor having an outermost surface with high mechanical strength and can restrain thickness nonuniform and image ghost for long. The electrophotographic photoreceptor comprising: a conductive substrate; a photosensitive layer formed on the conductive substrate; and an outermost surface layer that is a layer made of a cured material of a composition including at least one compound represented by the following formula (I) and at least one compound having charge transportability and an azo group: wherein in formula (I), F represents an n-valent organic group having a hole transporting property, R represents a hydrogen atom or an alkyl group, L represents a divalent organic group, n represents an integer of 1 or more, and j represents 0 or 1.

Provided are a liquid crystal display device that suppresses occurrence of drop marks during production without degrading various properties, such as dielectric anisotropy, viscosity, nematic phase upper limit temperature, rotational viscosity (γ1), and ghosting property, and a method for producing the liquid crystal display device.A liquid crystal display device 10 of the present invention includes a liquid crystal composition layer 13 sandwiched between a first substrate 11 and a second substrate 12 and vertical alignment films 16 and 17 formed of a cured product of a polymerizable liquid crystal compound. The liquid crystal composition constituting the liquid crystal composition layer 13 contains compounds represented by general formulae (I) and (II).

The invention provides an improved ViBe (Visual Background Extractor) algorithm in allusion to problems that it is easy to introduce ghosts and still targets in foreground detection of the traditionalViBe algorithm and that the ghosts and the still targets can only be eliminated after many frames. The improved ViBe algorithm aims to quickly and effectively suppress ghosts and still targets when foreground detection is performed. On the basis of the original ViBe algorithm, ViBe foreground extraction is respectively performed on two continuous frame images and a background model, an extractedcommon part is a detected ghost and still target region, then whether there is a ghost or a still target in the region is judged through comparing the current pixel value variance of the region and the pixel value variance of the background model, and finally the background model is updated through different strategies, thereby achieving a purpose of quickly and effectively suppressing the ghost and the still target. The ghost and still target suppression method has a obvious effect for quickly suppressing ghosts and still targets appeared in the traditional ViBe algorithm, and improves the accuracy of foreground detection.

The invention discloses a screen design method and device for an OLED (organic light emitting diode) based on optical path matching. The screen design method for the OLED based on optical path matching comprises the steps that the working wavelength of the OLED to be detected and optical parameters and geometric parameters of each layer of microstructures are obtained, the far field diffraction distribution of each layer of the microstructures in the OLED under the illumination of parallel beams are obtained according to the optical parameters and the geometric parameters to determine a targetlayer microstructure which does not meet a preset phase uniform distribution condition; the target layer microstructure is adjusted according to a preset adjustment strategy and the preset phase uniform distribution condition so that the adjusted target microstructure meets the preset phase uniform distribution condition under the illumination of the parallel beams. Thus, by adjusting the targetlayer microstructure until the adjusted target layer microstructure meets the phase uniform distribution condition under the illustration of the parallel beams, resulting ghosting and blurring phenomena caused by a periodic structure in an OLED screen when imaging using an under-screen imaging system are suppressed, and imaging quality is significantly improved.

An optical element includes an effective diameter area that is centered on an optical axis and transmits an effective light beam, and a flange portion having, on a side surface around the effective diameter area, a slope that is not perpendicular to a direction of the optical axis.

There is provided a Fresnel lens sheet for converging light rays fallen thereon from oblique directions, and capable of reducing the reflection of external light, of enabling displaying images in satisfactory contrast, of suppressing the occurrence of moire and of being easily manufactured. The Fresnel lens sheet 10 includes: a flat base part 11; a plurality of prisms 12 formed on the entrance surface of the base part 11, a plurality of V grooves 13 formed in the exit surface of the base part 11, and a plurality of wedge-shaped light absorbing parts 14 embedded in the V grooves 13, respectively. Each prism 12 has a refraction facet 12a that refracts light rays fallen thereon and a total-reflection facet 12b that totally reflects light rays fallen thereon. The prisms 12 refract and reflect light rays L1 incident thereon at large incident angles to deflect the light rays L1 for travel in a direction substantially perpendicular to the base part 11. The light absorbing parts 14 have a refractive index lower than that of the base part 11. The inclined surfaces 15a, contiguous with the base part 11, of the light absorbing parts 14 embedded in the grooves 13 of the base part 11 reflect the light rays L1 traveling through the base part 11.

An image forming apparatus includes: an electrophotographic photoreceptor including a conductive support and a photosensitive layer including an outermost surface layer capable of transporting a charge, the layer being farthest from the conductive support and containing a resin having a crosslinking structure; a charging unit that charges the electrophotographic photoreceptor; a first exposure unit that exposes the electrophotographic photoreceptor to form an electrostatic latent image on the electrophotographic photoreceptor charged; a developing unit that develop the electrostatic latent image with a toner to form a toner image; a transfer unit that transfer the toner image from the electrophotographic photoreceptor to a medium to be transferred; and a second exposure unit that uniformly expose the electrophotographic photoreceptor, the outermost surface layer absorbing exposure light of the second exposure unit and having a maximum absorbance of about 0.05 or less in the entire wavelength range of the exposure light.

Provided are a liquid crystal display device that suppresses occurrence of drop marks during production without degrading various properties, such as dielectric anisotropy, viscosity, nematic phase upper limit temperature, rotational viscosity (γ1), and ghosting property, and a method for producing the liquid crystal display device.A liquid crystal display device 10 of the present invention includes a liquid crystal composition layer 13 sandwiched between a first substrate 11 and a second substrate 12 and vertical alignment films 16 and 17 that contain a polymer of a polymerizable compound having a reactive group. The liquid crystal composition constituting the liquid crystal composition layer 13 contains compounds represented by general formulae (I) and (II).

In an imaging optical system 10, which comprises a plurality of optical members F and L1 to L12 and an aperture diaphragm P, the anti-reflection coating 1 is formed on the concave surfaces 2 and 3 of light-transmitting members (for example, negative meniscus lenses L1 and L2) that turn concavities to the aperture diaphragm P out of the optical members. The anti-reflection coating 1 is constituted to include at least one layer or more formed by using a sol-gel method.

Provided are a liquid crystal display device that suppresses occurrence of drop marks during production without degrading various properties, such as dielectric anisotropy, viscosity, nematic phase upper limit temperature, rotational viscosity (γ1), and ghosting property, and a method for producing the liquid crystal display device.A liquid crystal display device 10 of the present invention includes a liquid crystal composition layer 13 sandwiched between a first substrate 11 and a second substrate 12 and vertical alignment films 16 and 17 that contain a polymer of a polymerizable compound having a reactive group. The liquid crystal composition constituting the liquid crystal composition layer 13 contains compounds represented by general formulae (I) and (II).

An imaging device including a substrate, a charge generating layer, and a charge transport layer is disclosed. A particular charge generating layer is disclosed that includes porphine, or its derivatives, to facilitate charge generation while suppressing ghosting and improving photoreceptor performance.

The invention provides a camera lens, which is equipped with a first lens (with a focal length to be f1), a second lens (with a focal length to be f2), a third lens (with a focal length to be f3), and a fourth lens (with a focal length to be f4) sequentially from an object side to an image side. The following conditional expressions are met: 0.5<f1 / f<1.1, -2<f2 / f<-0.5, 0.65<f3 / f<1.1, -2.5<f4 / f<-1.8, and f is the focal length of the whole camera lens. Through reasonably optimizing the contour, distributing the focal power and selecting the optical material, a small camera lens is designed, and the camera lens has the advantages that the sensitivity is high, the sensibility is low, the color difference can be well corrected, and the optical performance is good.

An electrophotographic photoreceptor includes a conductive support; a photosensitive layer; and a surface protective layer as an outermost layer of the electrophotographic photoreceptor, wherein the electrophotographic photoreceptor satisfies following formulas (a) and (b): 3.6<=(A+B) / C x 100<=6 (a);B<=0.3 (b); wherein A (mum) represents a ten-point-averaged surface roughness RZJIS94 of the conductive support, B (mum) represents a ten-point-averaged surface roughness RZJIS94 of the surface protective layer, and C (%) represents a reflectivity of the surface protective layer against the conductive support.

The invention discloses an image sequence denoising method. The method comprises steps as follows: performing scaling processing on each image frame in a to-be-treated image sequence and generating a thumbnail sequence; performing fuzzy detection on the thumbnail sequence, selecting the thumbnail with the lowest fuzzy degree as a base thumbnail, and calculating the luminance coefficient of the base thumbnail; calculating offset thumbnails corresponding to the image frames except the base thumbnail in the thumbnail sequence to obtain an offset thumbnail sequence; generating an aligned image sequence of the to-be-treated image sequence according to the offset thumbnail sequence; calculating the aligning error coefficient of each image frame relative to the base thumbnail according to the aligned image sequence; calculating a gray template of the aligning error coefficient; generating fused weight according to the luminance coefficient, the aligning error coefficients and the gray template; performing pyramid fusion on the fused weight and aligned image sequence, and performing filtering to obtain the denoised image sequence. The invention further discloses a corresponding image sequence denoising device.

Provided is an imaging optical system wherein generation of flare and ghost which cause image quality deterioration can be sufficiently suppressed. An imaging optical system (7) is provided with, in sequence from an object side to an image surface side, an aperture stop (5), a biconvex first lens (1) having a positive power as an optical member, a second lens (2) which has a negative power and iscomposed of a meniscus lens having a concave lens surface on the image surface side, a third lens (3) which has a positive power and is composed of a meniscus lens having a convex lens surface on theimage surface side, and a fourth lens (4) which has a negative power and has a concave lens surface in the vicinity of an optical axis on the image surface side. On an effective aperture section on alens surface (e) on the image surface side of the second lens (2), a total reflection surface which totally reflects incoming beams outside the angle of view is provided.