126 results about "Wide open angle" patented technology

The invention provides a video monitoring system, which comprises a first image pick-up system, a second image pick-up system and a control system. The first image pick-up system comprises one or more cameras for shooting a wide-angle video within a large-scene vision field; the second image pick-up system comprises one or more pan / tilt / zoom (PTZ) cameras for shooting a local video within the large-scene vision field; and the control system comprises an image acquisition module, a foreground extraction module and a coordinate conversion module. The image acquisition module is used for receiving the wide-angle video shot by the first image pick-up system; the foreground extraction module is used for extracting a target of interest from the wide-angle video; and the coordinate conversion module is used for converting a two-dimensional coordinate (x, y) of the projection of an arbitrary point shot by the first image pick-up system in the large-scene vision field on an image plane of the wide-angle video shot by the first image pick-up system into a vertical altitude angle theta and a horizontal azimuth angle phi when one selected PTZ camera in the second image pick-up system is aligned with the arbitrary point in a picture center by a coordinate conversion mechanism, wherein the coordinate conversion mechanism is established by at least three arbitrary points selected randomly in the large-scene vision field.

The present invention includes a foveated wide-angle imaging system and method for capturing a wide-angle image and for viewing the captured wide-angle image in real time. In general, the foveated wide-angle imaging system includes a foveated wide-angle camera system having multiple cameras for capturing a scene and outputting raw output images, a foveated wide-angle stitching system for generating a stitch table, and a real-time wide-angle image correction system that creates a composed warp table from the stitch table and processes the raw output images using the composed warp table to correct distortion and perception problems. The foveated wide-angle imaging method includes using a foveated wide-angle camera system to capture a plurality of raw output images, generating a composed warp table, and processing the plurality of raw output images using the composed warp table to generate a corrected wide-angle image for viewing.

The invention provides an image switching accuracy improving method and device which is used for multi-camera system which can produce wide-angle image. The distortion of lens will make the overlap area photographed by multi-camera not accord with the characteristics, so, the gap of combined wide-angle images can be seen. The image switching accuracy improving method and device provided by the invention proofreads the distortion of lens, and makes the characteristics in overlap area accord with it and jointing engine can produce the seamless wide-angle image easily.

In a stereoscopic imaging device including a plurality of imaging optical systems, a wide-image in which a principal subject is shifted from the center is taken, and also, a tele-image in which the principal subject is enlarged is taken at the same time. A size of a wide-side frame W, that is, a size of an angle of view of a trimming wide-image is decided based on a size of a tele-side frame T, that is, a zoom magnification of a tele-side imaging optical system, a position of the wide-side frame W displayed in the decided size is arbitrarily moved depending on an instruction from an operation unit, an area delimited by the wide-side frame W moved to any position is clipped from a default wide-image, and thereby, the trimming wide-image is obtained. Thereby, the tele-image which is a telephoto image in which a desired subject is zoomed, and the trimming wide-image which is a wide-angle image in which the subject can exist at a position other than the center of the image are simultaneously obtained.

A method for orienting a digital panoramic image obtained using at least one initial wide-angle image the image points of which are transferred into a three-dimensional coordinate system includes inserting an orientation mark into the initial image at the time of the exposure. The method further includes detecting the location of the orientation mark in the digital panoramic image, performed by an image analysis algorithm.

The present invention provides a wide-angle imaging lens assembly comprising, in order from an object side to an image side: a first lens element with negative refractive power having a convex object-side surface and a concave image-side surface; a second lens element with negative refractive power having a convex object-side surface and a concave image-side surface; a third lens element with positive refractive power; a fourth lens element with negative refractive power having a concave image-side surface; and a fifth lens element with positive refractive power; wherein the two lens elements with refractive power closest to the object side are the first lens element and the second lens element; and wherein the number of lens elements with refractive power does not exceed six.

A flat wide-angle lens system of the invention has a reduced axial length and is intended for creating images with extremely wide angle of observation. The system consists of the first component which is intended for reduction of the field angle of light incidence onto the objective and comprises an assembly of at least two microlens arrays with the same pitch between the adjacent microlenses and arranged with respect to each other so as to provide afocality, and a second component that comprises an assembly of conventional spherical or aspherical microlenses that create an image on an image receiver. Each two coaxial microlenses of the microlens arrays of the first component form an inverted microtelescope of Galileo. The outlet aperture of a single microtelescope is made so that spherical aberration can be minimized almost to 0, while field aberrations can be corrected by design parameters of the microlenses.

The present invention provides methods of obtaining panoramic images that appear most natural to the naked eye by executing a mathematically precise image processing operation on a wide-angle image acquired using a wide-angle lens that is rotationally symmetric about an optical axis, and devices using the methods. Imaging systems using this method can be used not only in security surveillance applications for indoor and outdoor environments, but also in diverse areas such as video phones for apartment entrance doors, rear view cameras for vehicles, visual sensors for unmanned aerial vehicles and robots, and broadcasting cameras. Also, it can be used to obtain panoramic photographs using digital cameras.

A wide angle imaging system for providing a wide angle field of view of an area exteriorly of a vehicle includes an image capture device having a field of view directed exteriorly of the vehicle, an outer wide angle lens, a focusing lens and a display. The image capture device may comprise an array of pixels and may have a coarse distribution of pixels and a fine distribution of pixels. The display may be operable to display a substantially undistorted image to the driver or occupant of the vehicle in response to a signal output of the image capture device.

Provided is a surveillance camera apparatus with a wide-angle camera and a telephotographic camera supported by a foundation. A wide-angle camera is fixed to direct an optical axis in a fixed direction. A telephotographic camera can be inclined in panning and tilting directions to change an aiming direction of its optical axis. An image signal from the wide-angle camera is evaluated. When an image of a moving object is identified in a frame captured by the wide-angle camera, directivity information corresponding to a position of the moving object is calculated based on a relative position to the center of the frame. In accordance with the directivity information, posture of the telephotographic camera is controlled to aim its optical axis at the moving object. Thereafter, the posture of the telephotographic camera is controlled continuously to place the image of the moving object in the center of the frame captured by the telephotographic camera. The telephotographic camera captures the moving object while tracking it.

A camera system and method for operating that system. The camera system comprises a stationary camera having a wide angle view, a remotely controllable camera having a relatively smaller angle view for providing images in substantially full resolution, and a processor. The processor monitors the wide angle view of the stationary camera, receives information concerning a selected desired subject within the wide angle view, generates an electronic pan-tilt-zoom view of the selected desired subject based on the wide angle view of the stationary camera, controls the remotely controllable camera for providing a view that overlaps the electronic pan-tilt-zoom view of the desired subject, and processes the electronic pan-tilt-zoom view of the desired subject in accordance with the resolution of the remotely controllable camera.

The invention discloses a vehicle around-view monitor system and an around-view monitor image generating method. The vehicle around-view monitor system is characterized in that the front camera of thesystem is located in the front of a vehicle, the left camera of the system is located on the left of the vehicle, the right camera of the system is located on the right of the vehicle, and the rear camera of the system is located at the rear of the vehicle; each of the front camera, the left camera, the right camera and the rear camera comprises a fish-eye lens module, the fish-eye lens modules are identical in structure, and the wide angle of each fish-eye lens module is 190 degrees; a processor is connected with the front camera, the left camera, the right camera, the rear camera and a vehicle-mounted display and used for splicing the image information acquired by the front camera, the left camera, the right camera and the rear camera into an around-view monitor image and transmitting the around-view monitor image to the vehicle mounted display for displaying. By the vehicle around-view monitor system, the around-view monitor image can be generated according to the acquired image information, around-view monitoring is achieved, the view of a driver is expanded, and driving safety is increased.

A wide-angle double-hinge structure to allow an electronic device to flip at different angles includes a coupling plate, a resistant hinge and a cam hinge. The double-hinge structure couples a first chassis and a second chassis of the electronic device to enable users to selectively flip in an ordinary notebook computer operating condition or a back-to-back operating condition according to their preference. Thus the users can selectively perform input operation in a handheld or desktop fashion.

A security camera system according to present invention embodiments includes a telephoto type lens with one or more factors of optical zoom. A set of prisms that steer incoming beams from the surrounding environment (to adjust the field of view) is disposed in front of the lens. The security camera system preferably includes a wide angle staring mode that encompasses a large field of view, where the prisms are oriented to provide no steering effect. The security camera system further includes a high-resolution zoom mode, where the telephoto lens focuses on a region of interest and the prisms perform beam steering to adjust the field of view and enable the region of interest or an object to remain at the center of the security camera system view. Image processing techniques may be employed that consider the beam steering angle and the field of view to compensate for distortion effects.

In a digital camera, when the shutter is half-depressed, a controlling section 20 sequentially acquires current through-images imaged by an image acquiring section 10 which are wide-angle images imaged before zooming. Then, when a zoom operation is performed, the controlling section 20 holds a wide-angle image acquired at that point as a guidance image. Next, when the zoom magnification exceeds a predetermined magnification (for example, 3×), the controlling section 20 displays in a display section 25 the guidance image (wide-angle: low magnification) imaged before the zoom operation with a telephoto image imaged after the zoom operation. At the same time, a position corresponding to the current telephoto image is displayed to be identifiable within the guidance image. As a result, an imaging subject is easily confirmed when zooming is performed from wide-angle imaging to telephoto imaging.

An image capture system including two imaging systems of the same structure each having a wide-angle lens, which includes a front group, a reflection surface, and a rear group arranged in order from an object side, has a field angle larger than 180 degrees, and bends an optical axis of the front group toward the rear group by the reflection surface, and an imaging sensor, obtains an image in a solid angle of 4pi radian by combining images imaged by the imaging systems. Each of the two wide-angle lenses includes the reflection surface between the front group and the rear group, the reflection surfaces are made to be common to the two imaging systems. This reduces an interval between lenses nearest to the object side in the front groups of the two wide-angle lenses, thereby reducing a distance between maximum field angles of the two wide-angle lenses.

The invention discloses a wide-angle video monitoring device and method for multiple IP cameras. The wide-angle video monitoring device and method mainly solve the problem that the monitoring range of a single camera is small, in other words, when the monitoring angle of the camera is large, the monitoring distance is not long, and when the monitoring distance is long, the monitoring angle is not large enough. The monitoring device comprises an image collecting device, a data transmission device and an image processing device, the IP cameras are integrated on the image collecting device and are matched to form a wide-angle monitoring camera, the data transmission device is connected with the IP cameras, and the image processing device is connected with the IP cameras through the data transmission device, splices images collected by the adjacent IP cameras into a monitoring video and outputs the monitoring video in real time. The wide-angle video monitoring device and method conduct local image comparison and calibration based on the SIFT algorithm, image fusion is conducted based on wavelet transformation, and then real-time display is conducted in a BITBLT mode.

The invention provides the virtuality to reality autonomous response technology, relates to synthesis of an image shot by a camera and a three-dimensional computer pattern in real time and aims to form a new TV program making system. The method comprises steps that 1, the position of a blue case coordinate center b (0, 0) is determined, a relative position relationship between an auxiliary camera shooting wide angle and a main camera is preset, and two adjacent images are inputted to virtuality and reality real-time interaction software; 2, the position of a target object b (x, y) is determined, an area A of the step 1 is taken as the foreground, an image of the target object is shot by an auxiliary camera in real time, displacement of the target object relative to a reference coordinate center b (0, 0) is calculated through an image processing system in real time, and the position coordinate b (x, y) of the target object taking a frame as a sampling unit is acquired; and 3, the three-dimensional rendering equipment is utilized for rendering, and the result is outputted.

A method and apparatus is disclosed for providing special effects for wide-angle video images. The special effects include replacing a selected portion of a wide-angle video image with a predetermined image or an associated portion of a video image captured in a subsequent frame. Other special effects include image intensity scaling for wide-angle video images.

The invention discloses a protecting shell applied to an electronic device, which is used for accommodating the electronic device. The electronic device comprises a camera shot; the protecting shell comprises a shell and a lens device, wherein the shell is used for accommodating the electronic device, the lens device is arranged on the shell and comprises a plurality of lenses, and the lens device can be used for operating and moves relative to the shell so that the lenses can respectively correspond to the camera shot of the electronic device, therefore, the camera shot has different functions of close-perspective recording, filter, wide-angle, polarized light, and the like by shifting different use modes.

The invention provides an image pickup apparatus. The image pickup apparatus includes a first imaging portion and a second imaging portion that takes an image of the subjects with a wider angle than the first imaging portion. Track of a speficic object is performed on a narrow angle frame image array based on output signals of the first imaging portion and the track of the specific object is also performed on a wide angle frame image array based on output signals of the second imaging portion. The narrow angle frame image array is displayed as a dynamic image in a main display area for displaying frames and wide angle image information is displayed in an auxiliary display area for displaying the frames. The wide angle imaging information indicates a rectangular frame ico corresponding to a pickup range of the first imaging portion, a rectangular frame ico corresponding to a pickup range of the second imaging portion, and an ico of a position of the specific object in the relationships with the pickup ranges of the first imaging portion and the second imaging portion. Therefore, when occurring, frame-out can be prevented easily.

An electronic imaging apparatus includes a zoom optical system having, in order from the object side, a first lens unit with negative power and a second lens unit with positive power, in which lens components having refracting power in the first lens unit are only a single biconcave negative lens element located at the most object-side position and a positive lens component located at the most image-side position; an electronic image sensor placed on the image side of the zoom optical system; and an image processing section electrically processing image data obtained by the electronic image sensor to change the shape thereof. The zoom lens system satisfies the following conditions in focusing of a nearly infinite object point: 0.85<|y07 / (fw·tan ω07w)|<0.97 0.75<|y10 / (fw·tan ω10w)|<0.93 where fw is the focal length of the entire zoom optical system at a wide-angle position, y10 is a distance from the center of an effective imaging surface of the electronic image sensor to a point furthest from the center, y07 is an image height expressed by 0.7 y10, and ω07w is an angle made by a direction of an object point corresponding to an image point, connecting the center of the effective imaging surface of the electronic image sensor at the wide-angle position and the position of the image height y07, with the optical axis.

A wide-angle lens system is formed, sequentially from an object side, with a first group having a positive power, a second group having a negative power and a third group having a positive power, and at the time of focusing, only the second group is moved on an optical axis. The lens system satisfies conditional formulas of 0.3<BH1 / T1<0.7 and 0.9<f3 / f<1.8 (where BH1 is a distance from the final surface of the first group to a principal point position on the back side of the first group, T1 is a distance on the optical axis from a lens element surface of the first group closest to the side of the object to a lens element surface closest to the side of the image, f3 is the focal length of the third group and f is the focal length of the entire system).

A 3-D viewing system is disclosed that enables multiple operators to share a common objective element while readily adjusting the orientation of images that are displayed to one or more moveable display units. The orientation of images that are displayed at a movable display unit can be made to automatically depend on the position / orientation of the display unit. Thus, greater freedom in viewing postures is provided than previously available in 3-D viewing systems that share a common objective element, and each operator may view a 3-D image with proper perspective for his position / orientation. In order to reduce the number of optical components, the need to adjust optical components, and reduce costs, images from at least two different optical perspectives may be time-division multiplexed onto a single optical detecting device. Moreover, wide-angle, electronic color displays are disclosed which demodulate time-multiplexed image signals having two different parallaxes in a manner that dispenses with the need for wearing polarized glasses in order to experience a wide-angle, 3-D viewing experience. An electronic image display unit demultiplexes image data using left and right LED sets that are energized in sequence to emit up to three color light beams toward the left and right eyes of a viewer, at a frequency higher than 30 times per second. The light beams are then modulated with the image data for that color component using one or more high-speed, image modulators. Such modulators may be formed of transmissive or reflective liquid crystals in a known manner, or by an array of DMD's that are controlled in a binary fashion to reflect light for a given pixel within or outside an exit pupil of the display. If DMD's are used as the modulator, the duty cycle for a given pixel may be controlled in order to provide gradation of the display brightness for that pixel.

A wide-angle lens system includes: from the object side, (1) a first lens element formed of glass having both surfaces thereof so formed as to be spherical, having a meniscus shape convex to the object side, and having a negative optical power; (2) a second lens element formed of plastic having a meniscus shape convex to the image side and having a positive optical power; (3) an aperture stop; and (4) a third lens element formed of plastic having a meniscus shape convex to the image side and having a positive optical power, and the wide-angle lens system includes three lens elements in total. This permits providing a low-cost, compact super-wide-angle lens system having a favorable optical performance.