Dimension Stream Labs Ab

Zeropoint Technologies Ab

Erik Sintorn

Ulf Assarsson

Per Stenström

Angelos Arelakis

Alexandra Angerd

Sverker Rasmuson

A data compression method is disclosed which involves obtaining a plurality of data blocks, each data block comprising a plurality of data values. The method performs base-delta encoding of the obtained plurality of data blocks, wherein a delta value means a difference between a data value and a base value. This involves determining, among the data values of the plurality of data blocks, a set of global base values common to said plurality of data blocks. The set of global base values is selected to minimize delta values for the data values of the plurality of data blocks with respect to the global base values in said set of global base values. The method further involve encoding individual data values of the plurality of data blocks by selecting, in the set of global base values, for each individual data value a global base value that is numerically closest to the individual data value and thus results in a smallest delta value, and then generating metadata for the encoded individual data value to represent the selected global base value and the resulting delta value.

Systems, methods and devices for exploiting value similarity in computer memories

The present invention relates to a method of real-time generation of a 3D geometry of an object. The method comprises the steps of calibrating at least one RGB camera pair arranged to provide images of the object, receiving input images of the object from the at least on RGB camera pair, and performing a stereo reconstruction in a first hierarchical level using the input images. The stereo reconstruction step further comprises the steps of a) performing a ray marching operation in a first resolution on the input images to determine geometry positions along each view ray of the images; b) applying a uniqueness criterion to the geometry positions; c) determining a normal for each geometry position; d) performing a regularization operation based on the geometry positions and the respective normal, providing updated geometry positions; and e) performing an interpolation operation on the updated geometry positions and respective normal. The method further comprises repeating steps a) and c)-e) in at least one iteration in at least one ascending hierarchical level, wherein the resolution in the ray marching operation is doubled for each iteration, resulting in a geometry buffer for each of the at least one camera pair. The present invention further relates to a 3D image generation device and a system comprising such device.

Method of real-time generation of 3D imaging

The present disclosure relates to a method and capturing arrangement for creating a three-dimensional model of a scene. The model comprises a three-dimensional space comprising a plurality of discrete three-dimensional volume elements (V, V) associated with three initial direction-independent color values and an initial opacity value. The method comprises obtaining a plurality of images of said scene and defining a minimization problem. Wherein the minimization problem comprises three residuals, one for each color value, wherein each residual is based on the difference between (a) the color value of each image element of each image and (b) an accumulated direction-independent color value of the volume along each ray path of each image element. The method further comprises creating the three-dimensional model of the scene by solving said minimization problem.

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Gothenburg, Sweden

Erik Sintorn