68 results about "Stereoscopic depth" patented technology

A three-dimensional display is provided which can produce a stereoscopic image with a natural stereoscopic depth even on different screen sizes. A stereoscopic video signal generation circuit, which supplies a stereoscopic video signal to the three-dimensional display that forms a stereoscopic image by taking advantage of binocular disparity parallax, comprises: an information retrieving means for retrieving video information on the stereoscopic image and display information on the three-dimensional display; and an offset setting means for offsetting a left-eye image and a right-eye image relative to each other according to the video information and the display information to adjust the stereoscopic depth of the image displayed.

Teleconferencing is performed between two telecommunication devices having a display device and a stereoscopic pair of cameras positioned outside opposed sides of the display device at the same level partway along those sides. The separation between the centers of the cameras is in a range having a lower limit of 60 mm and an upper limit of 110 mm to improve the perceived roundness in a displayed stereoscopic image of a head. In captured stereo images that are video images, a head is segmented and the segmented backgrounds are replaced by replacement images that have a lower degree of perceived stereoscopic depth to compensate for non-linear depth perception in the displayed stereo images. Images are shifted vertically to position an eye-line of a detected face at the level of the stereoscopic pair of cameras of the telecommunication device where the images are displayed, improving the naturalness of the displayed image.

The invention discloses a method for establishing a relation between a scene stereoscopic depth and a vision difference in a binocular stereoscopic vision system. the method comprises the steps of firstly, solving inner parameters, and relative rotary matrixes and translation vectors of left and right cameras; then, analyzing a main error source and an error model of the binocular stereoscopic vision system; then, analyzing influences of the main error on a base line length and the vision difference of the parallel binocular stereoscopic vision system; then, establishing a common relation model of the scene stereoscopic depth and the vision difference in the binocular stereoscopic vision system; obtaining depth information by a laser distance measuring instrument by selecting a certain amount of demarcation points and carrying out demarcation based on a least square method to solve a relation model between the scene stereoscopic depth and the vision difference in the binocular stereoscopic vision system; and finally, solving the vision difference in left and right images through a corresponding fixed matching method so as to realize accurate recovery and three-dimensional reestablishment of the scene stereoscopic depth. The method has the beneficial effect of directly, simply, accurately and extremely improving the accuracy of the stereoscopic depth recovery and the three-dimensional reestablishment.

Influences of physiological stereoscopic elements are removed by image processing using projection transformation. A horopter-plane image projection unit 311 is designed to project a non-stereo image supplied via a signal line 129 onto a cylindrical plane (horopter plane) including a horopter circle. The size of the horopter circle is specified using, for example, the radius as horopter circle information. Additionally, the relationship with two eyes is specified by the interocular distance. A display surface right-eye projection unit 316 is designed to project an image projected on the horopter plane onto a display surface for the right eye. A display surface left-eye projection unit 317 is designed to project the image projected on the horopter plane onto a display surface for the left eye. Therefore, retinal images that are identical to each other are supplied to the two eyes to remove influences of physiological stereoscopic elements, and stereoscopic depth is given.

The invention discloses a method for realizing omnidirectional stereo imaging by using a single camera and a device thereof. A first catadioptric device and a second catadioptric device are coaxially arranged in opposite directions; the first catadioptric device refracts or reflects an omnidirectional scene beam observed from a first view point, and the second catadioptric device refracts or reflects an omnidirectional scene beam observed from a second view point; a light path redirector is placed in the center between the first catadioptric device and the second catadioptric device and is coaxial with the first catadioptric device and the second catadioptric device; the light path redirector deflects the beams reflected by the first catadioptric device and the second catadioptric device in the same direction; an imager captures the beams deflected by the light path redirector to form an image and outputs a first view image and a second view image with the same resolution. The method and the device thereof have the advantages of wide baseline, the same resolution of image pairs, high real-time, high extraction accuracy of stereoscopic depth, simple matching algorithm of stereo image pairs, wide range of application, and the like.

A reconfigurable backlighting construction for use in portable computer-based systems having direct and projection viewing modes of operation. In the illustrative embodiments of the present invention, the backlighting construction is integrated with a LCD display panel, a micropolarization panel, and a touch-screen writing panel to provide several different types of portable computer-based systems including, for example, a portable notebook computer, a computer-driven image display device, and a portable pen-computing device. In general, each of these computer-based systems are capable of selectively displaying color video images on an actively driven display surface, or projecting such video images onto a wall surface or projection screen without the need for a bulky overhead projector, required by all prior art systems. These computer-based systems can be easily reconfigured for projection viewing without physical removal of the light guiding panel and its light diffusing structures. If desired, these computer-based systems can be used to directly view “spatially-multiplexed” images of 3-D objects or imagery during the direct viewing mode, and when desired these spatially-multiplexed images can be projected onto a wall surface or projection screen during the projection viewing mode. When the spatially-multiplexed images are viewed through electrically-passive polarized glasses, the 3-D object is perceived with stereoscopic depth sensation in either mode of viewing. A portable light projection accessory device is provided for use with the portable computer-based systems of the present invention. In the illustrative embodiments, the portable light projection device has first and second housing portions that are interconnected by a foldable structure that permits the first and second housing portions to be selectively reconfigured for simple trouble-free use during the projection viewing mode of operation, and for compact storage during the direct viewing mode of operation.

Systems and methods may provide for tuning content for display based on a user viewing distance as detected by stereoscopic depth cameras. The depth cameras improve the accuracy of detection and segmentation for users, particularly for off axis viewing. The detected viewing distance thereby allows the resolution, size, type and format of the content to be more precisely adjusted to improve the viewing experience and/or to provide an appropriate user interface. Detecting the viewer distance allows the resolution of the content to be reduced when appropriate, thereby reducing the encoding and processing requirements to provide significant improvements in power and bandwidth efficiency.

The invention relates to an evaluation analysis method for three-dimensional viewing fatigue resulting from three-dimensional motion-in-depth. The method comprises the following steps of processing a test three-dimensional image material image, and enabling a target to carry out periodic reciprocating uniform motion in a parallax range of plus or minus 1 degree, wherein the uniform motion is divided into different motion speed levels; dividing subjective evaluation criteria to obtain score levels; analyzing subjective evaluation results of testees; measuring electroencephalograms of the testees before and after the testees view the three-dimensional motion-in-depth namely before and after fatigue, and extracting three basic frequency bands of eight brain regions; and carrying out comparison analysis on various brain region indexes under different fatigue situations, and comparing results with the subjective evaluation results, thereby obtaining the most effective electroencephalogram index for measuring the three-dimensional viewing fatigue resulting from three-dimensional motion-in-depth.

The invention discloses an object detecting method and system based on stereoscopic vision. The method includes acquiring a foreground depth image extracted from a stereoscopic depth image; and setting a height threshold value for obtaining a block, whose value is greater than the height threshold value, in the foreground depth image. If the obtained block meets a predetermined single object condition, the obtained block is detected as a block with a single object. If the obtained block meets a predetermined multi-object condition, smaller blocks with the objects in the obtained block are detected as the blocks with the single objects. If the obtained block does not meet the predetermined single object condition or the predetermined multi-object condition, the height threshold value is changed until the obtained block meets the predetermined single object condition or the predetermined multi-object condition.

The invention discloses a Jingchu folktale clay sculpture figure digital 3D model synthesis method, which comprises the steps of: steps 1, acquiring videos and pictures of Jingchu folktale clay sculpture figures in a digitalized manner; step 2, carrying out layered clay sculpture 3D model geometric modeling, wherein the modeling process can be divided into feature point extraction, surface grid model acquisition, bone creation, skin covering, standard template matching, 3D model calibration, 3D model adjustment and 3D model output; step 3, carrying out clay sculpture 3D model behavioral modeling, and determining attitudes of clay sculpture figures in the process of movements; step 4, reconstructing 3D attitude based on attitude capturing; step 5, and constructing a Jingchu folktale clay sculpture figure resource base. The invention further provides a Jingchu folktale clay sculpture figure digital 3D model synthesis system. The beneficial effects of the method and the system provided by the invention are that: a 3D scanning instrument or a stereoscopic depth video camera is not needed, the modeling is low in cost and fast in speed, the operability is high, the modeling accuracy is improved, the effect is more realistic and vivid, and modification is convenient.

An anaglyphic image presentation system is provided to evaluate and train a user's depth perception abilities. In embodiments, anaglyphic image target components are presented to a user on a display device. The image target components are then viewed by the user through a set of transmission filter lenses. The transmission filter lenses present and block one or more target components based on the peak wavelength transmission associated with each lens. As a result, a user perceives an anaglyphic target image that is resultant from the perceived image target components when viewed through the transmission filter lenses.

The invention discloses a shaft-shifting stereo camera. A left lens group and a right lens group which are independent from each other and are the same with each other and parallel to the center linein the shaft-shifting stereo camera translate for a distance of L = T/(2A) along the horizontal direction and towards the opposite direction. Two images with different visual angles obtained by the tilt-shift stereo camera have no trapezoidal distortion, and the relationship between the stereo depth of an object of interest in a real scene and the stereo depth of a stereo image convergence point of the object of interest is a linear relationship. The invention further discloses a same-screen chip, the problem that the focal plane of the eyes is separated from the image plane of the three-dimensional image is solved, and the healthy three-dimensional player enables the three-dimensional image measurement process to be more intelligent, simpler and more accurate. The camera can be applied tothe fields of medical endoscopes, endoscopes, industrial endoscopes, stereo cameras, stereo measurement and other stereo image manufacturing and application.

Systems and methods may provide for occlusion detection in frame rate conversion. Detecting the occlusion allows frame rate conversion to be more accurately performed. In some embodiments, one or more stereoscopic depth cameras may be used to determine the depth of a moving object to more accurately determine the occlusion. In some embodiments, the compression ratio may be adjusted to balance the frame rate and power to help ensure compliance with a power budget. In at least some embodiments, the motion of a camera may be passed from a 3D render pipe to an encoder to avoid motion calculation and thereby saving power.

The invention discloses glasses based on a digital intelligent virtual three-dimensional stereoscopic image technology and for visual detuning monitoring and rehabilitation training. The glasses comprise a large wide angle depth-of-field adjustable optical imaging system, a digital intelligent main control system, an interaction communication system with a mobile terminal and a power source system. As to the glasses, through the intellectualized digital three-dimensional image technology and optical design, a large wide angle virtual three-dimensional stereoscopic depth scene is manufactured;through interaction communication with the mobile terminal, a special APP controls all stereoscopic picture and video playing functions and related interaction operations for visual detuning monitoring and rehabilitation training of the glasses, and the glasses are provided with a software program for conducting vision and a color blindness and color amblyopia examination on a user and have an interaction communication capacity with a cloud side and a doctor, can conveniently conduct vision detection and rehabilitation training on the user at home, comprise depth-of-field adjustment, angle-of-view adjustment, reaction adjustment, contrast ratio adjustment and the like and help the user to solve all visual detuning problems.

Apparatuses and methods are provided that stimulate realistic 3D depth perception from 3D image data. The solution helps the brain perceive a more realistic depth by placing an object, which may or may not be transparent, in virtual 3D space such that the object appears close to the user inside the panoramic viewer in order to give the brain a close point to reference in 3D space where it might normally struggle to perceive depth at the border of two opposing perceptions of 3D depth for the brain.

The present invention discloses a method of analyzing the stereo depth influence factors of a naked eye 3D display system. The method is characterized by according to the Panum's fusion and wave aberration theories, establishing an ideal stereo depth model and an actual stereo depth model, analyzing the factors influencing the actual stereo depth, and evaluating the stereo depth of the display system objectively, and comprises the following steps of S1 combining the human visual characteristics and the Panum's fusion theory to determine a parallax range within which the eyes can fuse to form a 3D experience, and establishing the ideal stereo depth model; S2 according to the wave aberration theory, establishing the actual stereo depth model, and calculating the actual stereo depth by the light spot distribution on the retinas and the monocular resolution limit of the people; S3 comparing the actual stereo depth and the ideal stereo depth, and analyzing the factors influencing the actual stereo depth. According to the present invention, the factors influencing the stereo depth of the naked eye 3D display system are analyzed systematically, and the bases for designing the naked eye 3D display system better and improving the experiences of the naked eye 3D display system are provided.

The invention belongs to the technical field of image processing, and particularly relates to an image stereo matching method. An existing stereo matching method based on deep learning is poor in generalization ability, the main reason is that data in the stereo matching field has certain defects such as too strong reflection and shielding, and on the other hand, an area lacking textures also exists in an image, so that some methods for adding neighborhood constraints are prone to over-fitting. Meanwhile, a high-quality data set in the stereo matching field is lacked, and a network with generalization ability is difficult to obtain through simple training. The invention provides the image stereo matching method which comprises the following steps: constructing a training image library; enhancing a training image; extracting point (line) features of all images; training a feature point extraction network; extracting unary features of the binocular image; acquiring a coarse precision disparity map by the iteration module; performing unitary feature aggregation; performing parallax regression; and performing disparity refinement. The problem of overfitting in a stereo depth matching algorithm is solved.

The invention relates to a structurally innovated and developed inner page of an album. The inner page is characterized in that in the album, a foldable base plate serves as a background; one or more layers of clip art are pasted on the base plate in a horizontal overlapped mode through supports; photos are used as a part of the clip art to be pasted on or connected to the clip art or are used as the independent clip art to be pasted on or connected to the base plate or other clip art through the supports, so that the stereoscopic depth effect is achieved, and the photos can be folded to cooperate with the normal folding function of the inner page of the album. The inner page is steady in structure and has very strong visual impact and great interestingness.