A compressed light field imaging system is described. The light field 3D data is analyzed to determine optimal subset of light field samples to be (acquired) rendered, while the remaining samples are generated using multi-reference depth-image based rendering. The light field is encoded and transmitted to the display. The 3D display directly reconstructs the light field and avoids data expansion that usually occurs in conventional imaging systems. The present invention enables the realization of full parallax 3D compressed imaging system that achieves high compression performance while minimizing memory and computational requirements.

An apparatus and method for measuring the position of a stereo camera. The apparatus for measuring a position of the camera according to an embodiment includes a feature point extraction unit for extracting feature points from images captured by a first camera and a second camera and generating a first feature point list based on the feature points, a feature point recognition unit for extracting feature points from images captured by the cameras after the cameras have moved, generating a second feature point list based on the feature points, and recognizing actual feature points based on the first feature point list and the second feature point list, and a position variation measurement unit for measuring variation in positions of the cameras based on variation in relative positions of the actual feature points.

A method for obtaining a refocused image from a 4D raw light field data for a given focus (z.sub.focus) is described. The method is remarkable in that it comprises applying a shift correction parameter on shifted and summed images from said 4D raw light field data, the shifted and summed images being defined as a function of the given focus (z.sub.focus), and the shift correction parameter () including, for at least a part of pixels of at least two sub-aperture images derived from at least one 4D light field data of a test-chart image, determined shifts for pixels belonging to the part of pixels between the at least two sub-aperture images, the test-chart image comprising patterns adequate to compute disparities between the sub-apertures images.

A method of determining the characteristics of a scene around a vehicle comprises capturing a stereo pair of images of the scene and processing the images to produce a depth map of the scene. Each pixel in the depth map is assigned a value that corresponds to the range of a corresponding region in the scene, the pixels being arranged in a grid of rows and columns with each column of pixels in the grid corresponding to a vertically oriented set of regions in the scene and each row a horizontally oriented set of regions in the scene. The values for one or more columns of pixels in the depth map are binned to form a corresponding histogram, each bin in the histogram having a count value that corresponds to the number of pixels in the column that have a depth within the range assigned to the bin. The or each of the range bin histograms are processed to determine for the or each histogram the lowest range bin that is indicative that an object that represents a non-drivable region is present at a depth that lies in the range of depths assigned to the bin, thereby identifying the location of one or more boundary points that lie on a boundary of a drivable space in the scene.

The invention relates to a stereoscopic reproduction system without glasses, comprising an image reproduction device using transparency acting as means for illuminating multiple viewers with polarized light, two image capture elements separated from one another, containing polarizing filters that allow each of them to capture two images, one with the reflection of the light in the corneas and the other one eliminating said reflection, processing means for obtaining the pixel-by-pixel subtraction of those two images, the location of each eye in each image being obtained as the geometric center of the reflections in each cornea and the parallax of each eye between the two capture elements. With this data, the processing means generate as many luminous rectangles on a screen which backlights an array of converging lenses, which in turn focuses each of these luminous rectangles on the eye of each viewer after going through an image reproduction screen using transparency in which two images corresponding to the right eye and to the left eye are reproduced in synchronization with illumination of the luminous rectangles corresponding to each eye.

A method of treating diplopia or convergence insufficiency disorder in a patient; it includes providing a patient having a condition of diplopia or convergence insufficiency disorder with an image pair configured to present a first image to a first weaker eye of the patient and a second image to a second dominant eye of the patient; obtaining performance information of the patient when the patient performs a task requiring the perceiving of at least the information content of the first image; and adjusting, based on the performance information, the at least one image parameter such that the difference in perceptibility of the information content of the first image and the information content of the second image is reduced.

A display device includes a display panel having a plurality of sub-pixels, an optical member on the display panel, and a display driver configured to drive the display panel to display a test image on the display panel, and upon receiving a correction coefficient for each of a plurality of viewpoints of the display panel based on the display of the test image, to correct image data using the correction coefficient for each of the plurality of viewpoints.

According to an embodiment, an image processing apparatus includes an acquirer, first and second calculators, and a selector. The acquirer acquires a first image of an object captured in a first imaging direction and a second image of the object captured in a second imaging direction. The first calculator calculates, for each pixel included in the respective first and second images, likelihood of whether the pixel is included in a region of the object on the basis of feature information indicating image feature. The second calculator calculates, on the basis of the likelihood, a degree of similarity between a region of interest in the first image and a candidate region in the second image. The candidate region is a candidate of a corresponding region corresponding to the region of interest. The selector selects the candidate region serving as the corresponding region on the basis of the degree of similarity.

A handheld device for the image-based measurement of a remote object, comprising a housing having a front side and a rear side, a first and second camera, which are arranged having a stereo base on the rear side, for recording images of the object, an analysis unit having an algorithm for the stereophotogrammetric analysis of the images of the cameras and a display unit, which is arranged on the front side, for displaying images of the object and results of the stereophotogrammetric analysis, wherein the housing has a longitudinal axis, the stereo base is aligned diagonally relative to the longitudinal axis, and the analysis unit is designed for the purpose of taking into consideration the relative alignment of the stereo base during the stereophotogrammetric analysis.

To generate a warning that a stereoscopic image sequence has been synthesised from a 2D image sequence, a video processor correlates left-eye image data and right-eye image data to identify any sustained temporal offset between the left-eye and right-eye image data. A measure of sustained correlation between a measured spatial distribution of horizontal disparity and a spatial model can also be used to generate the warning.