Distance Technologies Oy

Jolla Oy

Joona Petrell

Mikko Strandborg

Petteri Timonen

Jetro Lauha

Martin Schüle

Jaakko Tapani Samuel Roppola

A graphical element is rasterized onto a set of light-emitting elements based on perceived shapes, perceived angular sizes and relative perceived positions of the light-emitting elements from a perspective of a given eye. Colour values, computed for the light-emitting elements based on the rasterization of the graphical element, are stored along with cadence information indicating a reference cadence of a reference light-emitting element in the set with respect to a multiscopic cell. When a cadence of a corresponding light-emitting element in another set matches the reference cadence within a predefined similarity threshold, the stored colour values are reused for light-emitting elements of the another set to display the graphical element to the given eye.

Reusing pixel-accurate graphics rasterization in multiscopic displays

A system including a tracker, a display, an optical combiner arranged on an optical path of the display and of a real-world light field of a real-world environment, at least one real-world facing camera, and at least one processor. The processor is configured to determine a relative position of each eye of at least one user with respect to the optical combiner using the tracker, generate or retrieve an image to be displayed based on the relative position of each eye of the at least one user with respect to the optical combiner, and determine a corresponding portion of the optical combiner for a given region of the image. The processor is further configured to capture at least one real-world image, calculate a colour difference and a luminance difference, adjust the graphical element based on the differences, and display the image while optically combining it with the real-world light field.

Adaptive visibility enhancement in augmented reality

A 3D bounding volume within which a graphical element is to be rasterized for a given eye is determined. A set of light-emitting elements from which light is directed toward the given eye along a direction intersecting the 3D bounding volume is identified. For each light-emitting element in the set, its perceived shape and angular size from a perspective of the given eye is determined. The graphical element is rasterized onto the set of light-emitting elements based at least on relative perceived positions of the light-emitting elements from the perspective of the given eye, and their perceived shape and their perceived angular size. A colour value is computed for each light-emitting element in the set based on the rasterization of the graphical element. A synthetic light field is then produced displaying the graphical element, using computed colour values for the light-emitting elements in the set.

Pixel-accurate graphics rasterization for multiscopic displays

A method includes obtaining information indicative of a relative location of each eye of at least one user with respect to an image plane of an augmented-reality display, generating or retrieving at least one image to be displayed based on the obtained information, identifying a plurality of graphical elements to be presented by the at least one image, detecting a potential overlap between at least two of the plurality of graphical elements from a perspective of a given eye of the at least one user, identifying distinct sets of allowed operations for respective graphical elements, determining a corresponding cost for each allowed operation, selecting at least one operation based on the allowed operations and their corresponding costs, applying the selected operation to at least one graphical element to modify the at least one image, and displaying the at least one image at the augmented-reality display.

Managing graphical elements in augmented reality

A relative position of a given eye of user(s) is determined with respect to a semi-reflective surface of an optical combiner, using a tracker. A given reflection region is identified on the semi-reflective surface from which light emitted by a light-emitting surface () of an autostereoscopic display is reflected toward the given eye. A given three-dimensional (3D) view frustum corresponding to the given eye is determined. For a given virtual depth at which graphical element(s) is/are to be presented, a frustum cross-section of the given 3D view frustum is determined at the given virtual depth relative to the given eye. Spatial anchor(s) is/are positioned at predefined position(s) on the frustum cross-section. A position for the graphical element(s) on the frustum cross-section is determined relative to the spatial anchor(s). A given image for presenting the graphical element(s) to the given eye, is determined, the graphical element(s) being positioned at the determined position.

Growing community of inventors

Tampere, Finland

Joona Petrell