System and method for smooth pointing of objects during a presentation

Abstract

A system and method are provided that allows a speaker to provide real-time annotations to one or more displayed images during a presentation. The speaker inputs the annotations my manually identify a portion of the displayed image using an input mechanism such as a touch screen that is in communication with a presentation monitor and a control system that is controlling the presentation. The identified portions are annotated onto the displayed images using a adaptive color that is selected to provide optimum contrast with the existing colors in the displayed image. In addition to providing adaptive, contrasting colors for the annotations, imperfection such as waviness are removed from the identified portions to created corrected portions that are then annotated onto the presentation image. Annotation is accomplished through computer generated graphics or through the use of a motorized, controllable laser pointer.

Description

FIELD OF THE INVENTION [0001] The present invention is directed to the field of interface devices for computer users, and more particularly to the use of pointing devices during presentations. BACKGROUND OF THE INVENTION [0002] In conference and meeting presentations, images are displayed on a monitor or projected on a screen for audience viewing. A speaker calls attention to specific portions of the displayed images using pointing devices such as illuminated arrows and laser pointers. Although laser pointers are generally preferred pointing devices, there are various limitations associated with the use of laser pointing devices. For example, the size of the projected image is typically large, especially in auditorium settings, and the speaker is positioned relatively close to the projected image. At this relatively close proximity to the projected image, the speaker cannot easily view the entire image, and there is significant perspective distortion when viewing projected images up...

AI Technical Summary

Benefits of technology

[0008] Exemplary embodiments in accordance with the present invention are directed to systems and methods that allow a speaker or presenter, while facing the audience and during a presentation, to select areas of a projected image for highlighting and to highlight the selected images on the projected image. Highlighting is accomplished by using lines, areas or figures that are superimposed onto the projected image or by controlling the movement of a pointing device such as a laser pointer. In addition to facilitating an indication by the speaker or presenter of an area or areas to be highlighted in the projected image, the exemplary systems and methods of the present invention reduce or eliminate random jitter or jagged lines in the displayed highlight or controlled pointing device using, for example, motion smoothing applied to indications made by the presenter. For example when the projected highlight is a traced path, the trajectory of the path is rendered with a smooth curve before projection onto the displayed image.

Problems solved by technology

Although laser pointers are generally preferred pointing devices, there are various limitations associated with the use of laser pointing devices.

At this relatively close proximity to the projected image, the speaker cannot easily view the entire image, and there is significant perspective distortion when viewing projected images up close.

Therefore, the speaker cannot easily view the presentation and must use a small computer screen on which the images are simultaneously displayed, alternating attention between the computer screen and the projected image.

Since laser pointers are typically held in the hand of the speaker and manually moved to the desired locations on the projected images, laser pointers are susceptible to motion jitter, causing inaccurate pointing and viewing problems for the audience.

In addition, the use of these physical highlighting systems are only applicable to presentations given at a single location and not to presentations made simultaneously to multiple distributed locations, for example across a computer network or through a video conference.

The system however, does not attempt to interpret the drawings made by the user or to correct errors or waviness in the points, lines or script entered by the user on the touch screen.

In addition, the system does not provide for enhancing contrast between the drawings entered by the user and the information displayed by the computer on the LCD screen in order to enhance the ability of the viewing audience to identify the highlighted areas of a projected image.

The system does not provide for random, real-time user input of highlighting during a presentation or for the selection of random areas of the presentation slide outside of the pre-selected areas.

In addition, the system does not maximize the highlighting contrast between the pre-selected areas of the presentation slide and the non-selected areas of the presentation slide.

This system, however, only provides for the selection of specific predefined graphics and does not allow for entry or recognition of user-defined graphics or shapes on the touch screen.

The colors, however, are not created or selected to maximize the contrast of the display screen over which the selected graphics are displayed.

Images