34results about How to "Remove parallax" patented technology

A liquid crystal display is furnished with: a liquid crystal display element having a pair of substrates, to which alignment members are provided to their respective opposing surfaces, and a liquid crystal layer sandwiched by the pair of substrates; an alignment mechanism for providing at least two different director configurations simultaneously on different arbitrary regions used for display in the liquid crystal layer; and a reflection film provided to at least one of the different arbitrary regions showing different director configurations; wherein the different arbitrary regions showing different director configurations are used for a reflection display section for showing reflection display and a transmission display section for showing transmission display, respectively. Examples of the alignment mechanism include an alignment film to which the alignment treatment is applied in different orientations in the reflection display section and transmission display section, respectively, an insulation film having different film thicknesses in the reflection display section and transmission display section, and so forth.

A stereoscopic image aligning apparatus (200) automatically aligns image pairs for stereoscopic viewing in a shorter amount of time than conventional apparatuses, which is applicable to image pairs captured by a single sensor camera or a variable baseline camera, without relying on camera parameters. The stereoscopic image aligning apparatus (200) includes: an image pair obtaining unit (205) obtaining an image pair including a left-eye image and a right-eye image corresponding to the left-eye image; a corresponding point detecting unit (252) detecting a corresponding point representing a set of a first point included in a first image that is one of the images of the image pair and a second point included in a second image that is the other of the images of the image pair and corresponding to the first point; a first matrix computing unit (254) computing a homography transformation matrix for transforming the first point such that a vertical parallax between the first and second points is smallest and an epipolar constraint is satisfied; a transforming unit (260) transforming the first image using the homography transformation matrix; and an output unit (210) outputting: a third image that is the transformed first image; and the second image.

A stereoscopic display apparatus displays a catalog of images as planar images or stereoscopic images, and at least one of the images is selected from the displayed catalog. The stereoscopic display apparatus then converts the stereoscopic appearance of the at least one selected image.

An image pickup device which can obtain an image of wide range picked up by a plurality of cameras is provided by preventing occurrence of parallax. The image pickup device is constructed such that an object of wide range is divided into a plurality of divided object portions to be separately picked up by a plurality of image pickup elements and images of divided object portions are processed into one combined video image by a processing element to which information on video images supplied from the respective image pickup elements is input; the image pickup element includes a lens 21 and an image pickup element 23 which detects rays of light passed through the lens 21, and when principal rays positioned in a Gauss area are selected from among the principal rays passing through the center of an aperture stop 22 of the lens 21 in the image pickup element and a point where linear components of the selected principal rays in an object side space are extended to intersect an optical axis is defined as an NP point 26, in respective image pickup elements a position of the NP point 26 is set behind the image pickup element 23 and respective NP points of the plurality of image pickup elements are made to congregate within a predetermined radius area in which one NP point 26 is centered.

An image pickup device which can obtain an image of wide range picked up by a plurality of cameras is provided by preventing occurrence of parallax. The image pickup device is constructed such that an object of wide range is divided into a plurality of divided object portions to be separately picked up by a plurality of image pickup elements and images of divided object portions are processed into one combined video image by a processing element to which information on video images supplied from the respective image pickup elements is input; the image pickup element includes a lens 21 and an image pickup element 23 which detects rays of light passed through the lens 21, and when principal rays positioned in a Gauss area are selected from among the principal rays passing through the center of an aperture stop 22 of the lens 21 in the image pickup element and a point where linear components of the selected principal rays in an object side space are extended to intersect an optical axis is defined as an NP point 26, in respective image pickup elements a position of the NP point 26 is set behind the image pickup element 23 and respective NP points of the plurality of image pickup elements are made to congregate within a predetermined radius area in which one NP point 26 is centered.

A telescopic gun sight free of parallax error is introduced which can accurately display a weapon's point of aim independent of the position of the shooter's eye. Additionally, the telescopic gun sight provides a wide viewing angle and a long, comfortable eye-relief.

The invention discloses an array image calibration method. A central image is used as reverence, multi-scale characteristics are adopted for characteristic point matching operation, then RANSAC is introduced for improving matching precision, and therefore overall calibration can be realized. Still the central image is used as a reference image, a mathematic limit principle is adopted for blocking calibration, and therefore parallax error of array images caused by different position relations can be eliminated. The multi-scale characteristics are also adopted for the blocking calibration, and structure similarity between two image blocks is calculated after calibration; if similarity value is smaller than a set threshold value, a gray scale-based calibration method is adopted; if the similarity value is still smaller than the threshold value, the size of the image blocks is changed till the similarity value meets requirement. Seamless splicing is completed according to results of two times of blocking calibration, and array cameras are put under a visual angle of a central camera in a unified manner. Via use of the method disclosed in the invention, no camera calibration is needed, good calibration effects can be exerted for parts where characteristic points are extracted, and good calibration effects can be exerted for margins or parts where no characteristic point can be extracted.

The invention discloses a visible light / long-wave infrared broad band spectrum joint focusing optical imaging system comprises a broad spectrum focusing window, a color separation film, a long wave infrared lens group and a visible light lens group. The color separation film and a horizontal optical axis form an angle of 45 degrees, and light incoming from the broad spectrum focusing window passes through the color separation film and the visible light lens group to image on a visible light sensor. The long wave infrared lens group is composed of a first lens, a second lens, a reflector and athird lens from an object space to an image space in sequence, the reflector is parallel to the color separation film, and infrared light in broad spectrum light passes through the color separation film and the long wave infrared lens group to image on a non-refrigeration detector. A first face of the second lens is a binary surface, a second face of the third lens is an aspheric surface, and systematic heat difference and optical aberration are removed through the design of the binary surface and the aspheric surface. The visible light / long-wave infrared broad band spectrum joint focusing optical imaging system can solve the problem that a single wave band is not high in detection accuracy, two wavebands and two lenses have optical parallax on imaging, two wavebands are big in imaging aberration, an infrared system has heat difference, and two wavebands need focusing mutually.

The embodiments of the present invention provide an image splicing method and device. According to the method, the overlapping area of a first image and a second image which are to be spliced is determined, and a plurality of pixel point pairs in the overlapping area are determined; a pixel point pair is optionally selected from the plurality of pixel point pairs as a first pixel point pair, and the first pixel point pair is projected onto a geometric curved surface of which the curved surface radius is a first preset value, and an arc distance L between the first pixel point pair is obtained;the curved surface radiuses of the remaining pixel point pairs are respectively calculated according to the depth values of target real scenes corresponding to the remaining pixel point pairs, a first depth value and the first preset value; the coordinate of each pixel point on an unfolded image is determined; and the coordinates of pixel points in the first image or the second image in the overlapping area are translated by L, so that two coordinates corresponding to each pixel point pair can be overlapped with each other; and the unfolded image in which the coordinates of the plurality of pixel point pairs are overlapped with each other is determined as a spliced image. With the image splicing method and device of the invention adopted, the coordinates corresponding to the pixel point pairs in the overlapping area can be completely overlapped with each other in the unfolded image, and the accurate splicing of the images to be spliced is realized.

A video stabilization method based on local and overall motion difference compensation, comprising the following steps: 1) using the optical flow method to obtain the motion trajectories of feature points in adjacent video frames, gridding the video frames, and preserving constraints and similarities according to the content Invariant constraints, calculate the camera path of each grid and the overall video frame; 2) Calculate the compensation matrix between the overall camera path and the grid camera path, and calculate an optimized overall camera according to the smooth and overlapping constraints of the path 3) Calculate the optimized grid camera path according to the compensation matrix between the optimized overall camera path and the grid camera path; 4) Calculate the deformation matrix of each grid according to the grid camera path before and after optimization , and deform the mesh to obtain a stable video frame. Compared with the existing methods, this method uses the compensation matrix to reduce the number of paths to be optimized from the number of grids to a whole path, which reduces the calculation time and improves the calculation efficiency.

A mirror device includes a reflecting surface. The reflecting surface is arranged in a vicinity of a rear window of a vehicle. The reflecting surface includes a concave part in a longitudinal direction of the reflecting surface and a convex part in a lateral direction of the reflecting surface. A line passing through a center of a virtual circle defining the concave part is inclined relative to a virtual horizontal line extending in a vehicle width direction toward a side opposite to a driver seat in the vehicle width direction.

The invention discloses a fast imaging method and device based on a neural network positioning algorithm. The device includes a coding hole collimator, a detector, a signal readout unit, an MLP type neural network, an event statistics unit, and an image reconstruction unit. In the present invention, the surface of the scintillator of the detector is first gridded so that each grid corresponds to a coordinate, and then the MLP type neural network is trained so that the input is the response matrix of the detector array and the output is the coordinate of the ray action position. ability. During imaging, the positive and negative coding patterns corresponding to the coding hole collimator at the initial position and 90° rotation are respectively obtained; and then respectively reconstructed, combined with subtraction operation, wavelet transform, and high-frequency and low-frequency denoising, to obtain the image of the present invention. The invention can effectively reduce the interference of near-field artifacts on reconstructed images, increase image clarity, and has the advantages of simple structure, small volume, convenient operation, high detection efficiency and fast reconstruction speed.