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Interaction Detection Using Structured Light Images

A structured light and image technology, applied in the input/output process of the image reproducer, picture duplicator, data processing, etc. of the projection device, which can solve the problem of not providing accurate reading of the interactive position.

Active Publication Date: 2014-09-17
TEXAS INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these solutions do not provide an accurate readout on the location of the interaction

Method used

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  • Interaction Detection Using Structured Light Images
  • Interaction Detection Using Structured Light Images
  • Interaction Detection Using Structured Light Images

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] First refer to figure 1 , which shows an apparatus 100 for sensing and interface interaction according to various methods in a block diagram form. Apparatus 100 includes at least one processing device 102 and at least one single-element light sensor 104 coupled to processing device 102 . Processing device 102 may be coupled to or contained within at least one memory device 106 . The single-element sensor 104 can be a photodiode, photosensor, photosensor, photoswitch, phototube, phototransistor, photon counter, wavefront sensor, single-pixel active pixel sensor, photovoltaic sensor, or other known or current Unknown single element light sensor. By some means, multiple single element sensors, such as sensors 104, 108, 110, 112, may be used. However, these multiple sensors 104, 108, 110, 112 are typically not co-located with each other, being provided to take readings of the scene 114 from different angles and viewpoints. A scene 114 is defined as a region that one or ...

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PUM

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Abstract

An apparatus (100) and method are provided to determine the occurrence and location of an interaction with an interface, particularly with an image of a user interface (120) that may be projected or otherwise produced on a surface (128). The apparatus (100) uses one or more single-element sensors (104) (such as a photodiode) to sense and capture light readings of a scene (114), the readings corresponding to a plurality of structured light images (300) injected within the presentation of the interface. The readings are compared to a baseline set of readings to determine the occurrence and location of an interaction event by an obstacle (204) (i.e., a finger or a stylus) such as a touch event or a movement of the obstacle (204).

Description

technical field [0001] The present invention generally relates to detection of interaction with an interface. Background technique [0002] Interaction with an interface, eg, a person's touch interaction with an image projected or otherwise displayed on a surface, can be detected by a number of means. Such previous interaction detection methods included in digital cameras (eg, charge-coupled device (CCD) cameras or CMOS cameras) continuously captured images of the scene and continuously processed the scene to determine the occurrence or location of interactions with the interface. However, these solutions require the use of one or more additional cameras and associated optics to monitor the scene, which, in addition to being expensive, are difficult to incorporate into the small form factor required for implementation in portable electronic devices such as mobile communication devices. Further, these solutions require large amounts of processing power to process scene image...

Claims

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Application Information

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IPC IPC(8): G06F3/042G06F3/0488H04N9/31
CPCG06F3/03542G06F3/0386G06F3/042G06F3/048G06F3/0304G06F3/0418G06F3/0426
Inventor M·C·查珀斯G·德代奥卢
Owner TEXAS INSTR INC