Method and device to control touchless recognition
First Claim
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1. A method for touchless character recognition, comprising:
- detecting a first pause of a finger in a touchless sensory space at a first location;
after the first pause, tracking a movement of the finger in the touchless sensory space;
detecting a second pause of the finger in the touchless sensory space at a second location;
after the second pause, creating a trace of the finger movement between the first pause and the second pause from the tracking;
recognizing a pattern from the trace, wherein the pattern is an alphanumeric character or a finger gesture;
presenting the pattern in response to the second pause at the second location; and
consequently thereafter providing a finger gesture detection state to accept or reject the pattern, consisting of;
detecting a returning movement of the finger from the second location upon release of the second pause to the first location of the trace coinciding with the first pause for accepting the pattern corresponding to the trace,detecting a finger discard action comprising a finger movement away from the first location for rejecting the pattern; and
either accepting the pattern corresponding to the trace when the returning movement is detected towards and returns to the first location, or rejecting the pattern when the finger action is directed away from the first location.
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Abstract
A sensor device (100) and method (300) for touchless finger signing and recognition is provided. The method can include detecting (304) a first pause of a finger in a touchless sensory space (101), tracking (306) a movement (140) of the finger, detecting (308) a second pause of the finger, creating (310) a trace (145) of the finger movement from the tracking, and recognizing (312) a pattern (146) from the trace. The pattern can be an alphanumeric character or a finger gesture. A user can accept or reject the recognized pattern via touchless finger control.
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Citations
17 Claims
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1. A method for touchless character recognition, comprising:
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detecting a first pause of a finger in a touchless sensory space at a first location; after the first pause, tracking a movement of the finger in the touchless sensory space; detecting a second pause of the finger in the touchless sensory space at a second location; after the second pause, creating a trace of the finger movement between the first pause and the second pause from the tracking; recognizing a pattern from the trace, wherein the pattern is an alphanumeric character or a finger gesture; presenting the pattern in response to the second pause at the second location; and consequently thereafter providing a finger gesture detection state to accept or reject the pattern, consisting of; detecting a returning movement of the finger from the second location upon release of the second pause to the first location of the trace coinciding with the first pause for accepting the pattern corresponding to the trace, detecting a finger discard action comprising a finger movement away from the first location for rejecting the pattern; and either accepting the pattern corresponding to the trace when the returning movement is detected towards and returns to the first location, or rejecting the pattern when the finger action is directed away from the first location. - View Dependent Claims (2, 3, 4, 5)
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6. A method for touchless finger gesturing, comprising:
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at a first time, upon detecting a first pause proceeded by detecting a finger at a first location in a touchless sensory space; tracking a movement of the finger in the touchless sensory space; at a second time, detecting the finger at a second location in the touchless sensory space proceeded by a second pause; creating a trace of the finger movement between the first location and the second location from the tracking; during the second pause, recognizing a pattern from the trace and presenting the pattern in response to detecting the finger the second time at the second location; and consequently thereafter providing a finger gesture detection state to accept or reject the pattern, consisting of; detecting a return movement of the finger from the second location upon release of the second pause to the first location of the trace for accepting the pattern corresponding to the trace, detecting a finger discard action comprising a finger movement away from the first location for rejecting the pattern; and
,either accepting the pattern corresponding to the trace when the returning movement is detected towards and returns to the first location, or rejecting the pattern when the finger action is directed away from the first location. - View Dependent Claims (7, 8, 9, 10)
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11. A mobile device suitable for touchless finger signing having a
a sensor device for tracking a movement of a finger in a touchless sensing space; - and
a recognition engine for detecting a first pause of a finger in a touchless sensory space at a first location; after the first pause, tracking a movement of the finger in the touchless sensory space; detecting a second pause of the finger in the touchless sensory space at a second location; after the second pause, creating a trace of the finger movement between the first pause and the second pause from the tracking; and during the second pause identifying at least one pattern in the trace, wherein the pattern is an alphanumeric character, letter, finger gesture or symbol also during the second a se presenting the pattern in response to the second pause at the second location; and consequently thereafter providing a finger gesture detection state to accept or reject the pattern, consisting of; detecting a return movement of the finger from the second location to the first location of the trace upon release of the second pause for accepting and processing the pattern to provide touchless user interface, detecting a finger discard action comprising a finger movement away from the first location for rejecting the pattern and either accepting the pattern corresponding to the trace when the returning movement is detected towards and returns to the first location or rejecting the pattern when the finger action is directed away from the first location. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification