Abstract: Method and an imaging and processing circuit for identifying a certain pixel as a local extreme point. The imaging and processing circuit generates, in a certain sensing element associated with said certain pixel and in two or more of its closest neighboring sensing elements, sensed signal levels, respectively, based on sensed light during an exposure to light. It provides, based on comparisons between said sensed signal levels and at least two different threshold levels, binarized image data of said certain sensing element and said two or more of its closest neighboring sensing elements. The imaging and processing circuit then identifies, by means of a computing element configured to operate on the provided binarized image data, said certain pixel as the local extreme point based on that the provided binarized image data of said certain sensing element differ from the provided binarized image data of said two or more of its closest neighboring sensing elements.

Abstract: Method and motion encoder for providing a measure indicative of motion of an object. The indicated motion is relative to an image sensing circuitry and in a direction that is perpendicular to an optical axis of the image sensing circuitry when the image sensing circuitry provides image frames sequentially imaging at least part of said object during the motion. The motion encoder obtains image data of a sequence of said image frames and then computes, for at least one pixel position of said sequence of image frames and based on the obtained image data, at least one duration value. Each duration value indicating a duration of consecutively occurring local extreme points in said sequence of image frames. The motion encoder then provides, based on said at least one duration value, said measure indicative of the motion.

Abstract: A mobile device, a method in a mobile device, a server and a method in a server for augmented reality.