43results about How to "Distortion free" patented technology

An intraoral camera system is disclosed, which includes a dental mirror having a aperture for transmitting light therethrough, the aperture being provided in the center or any other part of the mirror by removing a reflective material therefrom. A CCD camera is secured on a back surface of the dental mirror in such a manner that the aperture coincides with its incident portion coincides with aperture in the dental mirror. A hand mirror shaped monitor is also provided for displaying image data received from the CCD camera via cable or radio, and a server is also provided that is capable of storing and outputting the image data any time onto the monitor, wherein even though a patient is laid down on a chair in a horizontal position, the patient or a third party can utilize the hand mirror shaped monitor to view an image which is very close to the image that a dentist views through reflection from the dental mirror having said CCD camera built therein.

The invention relates to simulating 2D X-ray images from 3D CT data. A user can access a repository of CT data of a patient's anatomy 2 by using a computer network system. The CT data has been obtained by a CT scanning of the patient 1. Firstly, the user retrieves the CT image data 3 and a 3D image is generated 4. Secondly, the user may orient the CT image in any orientation desirable with respect to a virtual X-ray source and a virtual image plane. And thirdly, a 2D X-ray image is simulated 6 from the chosen viewpoint and shown to the user.

An improved mathematically modeled family of bellow fold patterns, useful for making bellows from stiff but foldable materials, which forms a corner of a bellow consisting of a series of several single inversion fold patterns, each having a characteristic design angle which is mathematically computed to provide a desired initial wall angle for the bellow and to minimize wall tilting over a predetermined extension angle range, thereby allowing low cost bellows to be made which can extend long distances while using a minimal amount of stiff but foldable material. In addition, each characteristic design angle can be computed to provide exactly zero tilting of the bellow walls at one or more non-zero extension lengths specified by a designer, thus allowing, unlike all other prior art folds, a structurally stiff, long extending bellow to be formed in an extended state using fast production techniques such as vacuum forming, blow molding or injection molding, while also allowing the bellow to be free of distortion in the compressed state.

A digital camera acquires the image of an original including an original from a shot image acquired by shooting. The digital camera reduces the image of the original and corrects distortion of the reduced image which is originated from the characteristic of a lens. As the digital camera performs distortion correction on the reduced image, the number of arithmetic operations in distortion correction is reduced, making distortion correction simpler. The digital camera acquires a rectangle defined by the contour of the original, extracts the image of the original to acquire an original image before reduction, and acquires an associated projection-transformed image by affine transformation. The digital camera acquires pixel positions of the original image using an affine parameter, and acquires pixel positions of the image before distortion correction using a relational expression of distortion correction performed on the reduced image.

An image processing apparatus for displaying an input image on a display, includes an image converting unit for converting the input image into an equiaspect ratio image, the equiaspect ratio image having the same aspect ratio as the input image, having one of a horizontal size and a vertical size thereof equal to one of a horizontal size and a vertical size of a display screen of the display, and having an image size thereof being equal to or smaller than the size of the display screen, an additional image generating unit for generating an additional image from the input image, a combination image generating unit for generating a combination image into which the equiaspect ratio image and the additional image are combined, and a display control unit for causing the display to display the combination image.

Apparatus for imaging an area of a surface along a viewing angle that is oblique to the surface includes an afocal optical relay, which is adapted to form a tilted initial image of the area by collecting optical radiation from the area along an optical axis oriented at the viewing angle. A tilt correction unit is coupled to correct a tilt of the initial image so as to form a substantially undistorted intermediate image. A magnification module is coupled to focus the intermediate image onto an image detector.

An information-recording/-reproducing device comprises a rotor assembly formed of a disc portion having information recording layer provided on the main surface and an axle portion, the disc portion being connected at the center of a surface opposite to the main surface with the rotating axle so that the rotating axis crosses at right angle with the main surface of disc portion at the center of rotation, a bearing for supporting the axle of disc portion freely rotatable, a rotating magnet fixed to a rotor yoke, a stator disposed opposing to the rotating magnet, and a motor for rotating the disc portion with the rotating axis of the axle as the center of rotation. Preferably, the disc portion with the rotating axle portion having a round column shape or a cylindrical shape, further may have a shallow hollow in the central part of the main surface which being a surface opposite to the surface having the rotating axle.

An image processing apparatus is designed for displaying an image written in a video memory, on a display device in the form of an array of dots, by performing distortion correction of the image based on a distortion rate, and by performing tilt correction of the image based on a tilt angle. In the image processing apparatus, a first computing part computes a position before the tilt correction based on the tilt angle, for each dot of the image displayed in the display device. A second computing part computes a position before the distortion correction based on the distortion rate, for each position computed by the first computing part. A color data computing part computes color data of the position computed by the second computing part, based on color data of dots around the position in the video memory.

The present invention relates to an image warping software algorithm for a real time alteration of a display scene running under the Microsoft Windows Operating System. The image warping software algorithm alters the display scene and allows an observer to view the display scene as a single unbroken image when the display scene is distributed across multiple display screens. The purpose of the image warping software algorithm is to significantly reduce the distortion observed at the abutting edges of the joined display screens.

The invention relates to a projector (1) for projecting an image (6), comprising: a light source (2) for generating a light bundle (12); a pivotable deflection unit (3) designed for deflecting the light bundle (12) generated by the light source (2) onto a projection surface (5); and an imaging device (7, 8, 9) for imaging an aperture of the deflection unit (3) onto the projection surface (5); wherein the imaging device (7, 8, 9) comprises a mirror objective (7) having at least two mirror elements (8, 9). The invention further relates to a corresponding method.

Provided is a semiconductor device including: a multilayer substrate including an optical element; a light-transmitting plate provided on the substrate to cover the optical element; and a lens of an inorganic material provided between the substrate and the light-transmitting plate. A structure having a same strength as a strength per unit area of the lens is provided at a portion outside an effective photosensitive region where the optical element is formed, when the substrate is viewed in plan.

A lattice strain measuring method comprising the steps of: using a scanning transmission electron microscope 12 to apply convergent electron beams 34 to a sample 32 and obtain a convergent-beam electron diffraction image 36 of the sample 32; computing a lattice strain magnitude of the sample 32, based on the obtained convergent-beam electron diffraction image; and displaying the computed lattice strain magnitude, associated with an electron microscope image of the sample 32. A scanning transmission electron microscope 12 is used, whereby electron beams 34 are caused to scan to thereby suitably set an incidence position. Accordingly, the incidence position of the electron beams can be displaced at a nanometer-order pitch accurately in a short period of time. The use of a scanning transmission electron microscope 12 requires no image forming lens below the sample 32, and the convergent-beam electron diffraction image is free from the distortion due to the influence of an image forming lens. Thus, a distribution of lattice strains in an electronic device having, e.g., a micronized structure can be displayed in an image with high resolving power and with high accuracy and furthermore in a short period of time.

The invention relates to a pressure-actuated member (1), in particular a paint pressure controller or a coating agent valve, for influencing a mean coating agent pressure of a coating agent to be applied in a painting system, comprising a component (6, 14), which is subjected directly to the coating agent during operation and is mobile and/or can be deformed to influence the pressure. It is proposed that the component (6, 14) subjected to the coating agent at least partially comprises a ceramic material in order to achieve a longer service life.

A fingerprint input apparatus includes scattered light and a two-dimensional image sensor. The scattered light is generated inside a finger having a fingerprint pattern in accordance with external light. The fingerprint pattern is made up of a ridge portion and a valley portion. The two-dimensional image sensor is made of a large number of light-receiving elements arranged in a two-dimensional array. The image of the fingerprint pattern is input to a light-receiving surface of the light-receiving element. The light-receiving element whose light-receiving surface is in substantially contact with the ridge portion detects as the ridge portion a bright portion where the scattered light emerging from the finger reaches at a high intensity. The light-receiving element whose light-receiving surface corresponds to the valley portion via a space detects as the valley portion a dark portion where the scattering light emerging from the finger reaches at a low intensity.

A method and apparatus for compensating for aberrations or distortions of an optical system such as an eye of a patient which is to be imaged by a camera is disclosed. Light passing through the optical system is detected by a charge coupled device (62) via an imaging system (60). Phase data relating to the light passing through the system is determined and a processor (64) processes the data so that a transformation is determined which transforms the data relating to the wavefront of the light so that the phase data is transformed to remove aberrations or distortions introduced by the optical system. Thus, clearer images of the fundus of an eye generated by light passing through the optical system of the eye and for determining distortions or aberrations introduced by the optical system of the eye are provided.