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A touch-sensitive film coated on top of a flat screen cannot detect hovering or mid-air gestures
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[0130] The present invention relates to devices, systems and methods related to camera-based computer input devices for human-computer interaction. Furthermore, the invention also relates to devices for implementing such a system and performing such a method.
[0131] Before the description of at least one embodiment of the invention is in detail, it is to be understood that the invention is not limited in application to the details of construction and arrangement of parts set forth in the following description or shown in the drawings. The invention is capable of other embodiments or of being practiced or carried out in various ways. Also, it is to be understood that the phrases and terminology used herein are for the purpose of description only and should not be regarded as limiting.
[0132] The principles and operation of interactive input device devices, systems and methods according to the present invention may be better understood with reference to the drawings and the...
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Abstract
The invention provides an apparatus, a system and a method. The apparatus, the system and the method are used for controlling and interacting within an interaction volume (1) within a height over the coordinate plane (12) of a computer such as a computer screen, an interactive whiteboard, a horizontal interaction surface, a video / web-conference system, a document camera, a rear-projection screen, a digital signage surface, a television screen or a gaming device, to provide pointing, hovering, selecting, tapping, gesturing, scaling, drawing, writing and erasing, using one or more interacting objects (2), for example, fingers, the hands, the feet, and other objects, for example, pens, brushes, wipers and even more specialized tools. The apparatus and the method can in a system be used together with, or even be integrated into, data projectors (3) of all types and its fixtures / stands (4), and used together with flat screens (12) (like LCD, plasma, OLED, rear-projection screen, etc.) to render such display systems interactive. The apparatus consists of a single camera (5) covering the interaction volume (1) from either a very short distance or from a larger distance to determine the lateral positions (X,Y) and even capturing the pose of the interacting object(s) (2).
Description
technical field [0001] The present invention relates to camera-based multi-touch interaction systems that utilize, for example, camera-based input devices and visible and / or infrared lighting to track objects within an area / space, such as tracking one or more finger or pen; the system enables determination of a two-dimensional position within an area and height above the surface of the area for providing actual two-dimensional input coordinates and in actual interaction states such as "inactive" (no tracking), A precise distinction is made between "hovering" (tracking without touching, sometimes called "in range") and "touching". The present invention also relates to multi-modal input devices and interfaces that eg allow pen and finger touch input and are also operable to handle several objects simultaneously, such as multi-touch computer input devices. Furthermore, the present invention relates to a method of inputting gestures using a three-dimensional based input device an...
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