88results about How to "Suppress ghosting" patented technology

The invention provides an imaging lens and an imaging apparatus. The imaging lens (1) includes: a stop; and a lens group (GP) disposed between the stop and an imaging plane of the imaging lens and having a positive power as a whole. The lens group (GP) has an air lens formed by an air gap between lenses adjacent to each other, and the imaging lens satisfies conditional expression (1): -8 < L ( 1 / Ra 2 - 1 / Ra 1 ) < -3, Ra 1 represents a radius of curvature of an object-side surface of the air lens which has a convex shape and is closest to an image side of the imaging lens in the lens group, Ra 2 represents a radius of curvature of an image-side surface of the air lens, and L represents a distance on an optical axis of the imaging lens from an object-side surface of a lens closest to an object side in the imaging lens to an imaging plane.

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 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 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.

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.

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).

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).

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.

The present invention provides a frequency-time saliency combination-based moving target detection method. According to the method, an image is preprocessed; salient moving target information in the image is detected through a frequency tuning algorithm; a dynamic saliency graph is calculated; and the dynamic saliency graph is further detected through a Gaussian mixture model algorithm, so that a final detection result is obtained. The method of the invention integrates the frequency tuning method and the Gaussian mixture model method, and therefore, the calculation amount of the method is small, and the method can inhibit the ghosting of the moving object in the detection image.