A presentation system and a user device for use as a presentation aid is disclosed. The system comprises presentation means (5) for presenting images that associate with a presentation. Pointer means (4) are used for provision of a pointer on an image (11) presented by means of the presentation means. Detector means (8) are for detecting the pointer on the image and for determining the location of the pointer relative to the image. Control means (6) are adapted to provide at least one control function for the presentation based on information from the detector means.
A photography system includes a digital camera and a remote control. The remote control emits a light that the photographer can use to designate a subject to be photographed by pointing the remote control at the subject, casting a light spot on the subject. In a preferred embodiment, the light is generated by a laser pointer included in the remote control. The camera selects a region to photograph from its field of view, based on the location or motion of the light spot. The camera may optionally select a region that is centered on the light spot. The photographer may optionally specify the size of the region to be selected. The camera may optionally adjust the size of the selected region to assist in photographic composition. The camera may optionally be capable of making video recordings.
The present invention discloses methods for generating a slide show of an image. With the methods, every still image could be displayed with the vivid effect of a dynamic video. The steps of one method according to the present invention comprise: performing a semantic analysis of a image for detecting semantic regions; selecting a first region and a second region from the semantic regions; determining a first and a second zooming levels of the first and second regions, respectively; and generating a slide show of the image by panning the image from the first region to the second region while zooming the image from the first zooming level to the second zooming level, gradually.
