Portable terminal and user interface control method thereof based on pattern recognition and analysis of image captured by camera
First Claim
1. A user interface control method of a portable terminal including a camera module, the method comprising:
- capturing first and second images through a camera module;
recognizing, by a pattern recognition unit, patterns of the first and second images by calculating positions of target points extracted from the first and second images respectively;
analyzing, by a pattern analysis unit, the recognized patterns by calculating a displacement angle θ
based on the positions of the target points;
selecting, by the pattern analysis unit, a control command based on the analysis result; and
performing by a controller, a function corresponding to the control command.
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Accused Products
Abstract
A portable terminal and a user interface control method thereof are provided. In the terminal and method, patterns of a subject image captured by a camera are recognized and analyzed. First and second images changed according to motion (movement, holding away from or drawing close to a user) of the portable terminal are captured by the camera module. Patterns of the first and second images are recognized. The motion of the portable terminal is analyzed based on the recognized patterns. Control commands corresponding to the analyzed motion are selected. A function corresponding to the selected control command is performed. The portable terminal can be intuitively and simply used as its motion is directly applied to user interface control. User interface can be controlled without an additional part, using a camera installed to the portable terminal. Also, the present invention can resolve the problems caused when the conventional navigation key is operated.
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Citations
25 Claims
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1. A user interface control method of a portable terminal including a camera module, the method comprising:
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capturing first and second images through a camera module; recognizing, by a pattern recognition unit, patterns of the first and second images by calculating positions of target points extracted from the first and second images respectively; analyzing, by a pattern analysis unit, the recognized patterns by calculating a displacement angle θ
based on the positions of the target points;selecting, by the pattern analysis unit, a control command based on the analysis result; and performing by a controller, a function corresponding to the control command. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A user interface control method of a portable terminal including a camera module, the method comprising:
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capturing first and second images through a camera module; recognizing, by a pattern recognition unit, patterns of the first and second images by calculating positions of target points extracted from the first and second images respectively; analyzing, by a pattern analysis unit, the recognized patterns by calculating a distance increment/decrement Δ
d from the positions of the target points and determining whether the distance increment/decrement Δ
d comprises a positive or negative value;selecting, by the pattern analysis unit, a control command based on the analysis result; and performing, by a controller, a function corresponding to the control command. - View Dependent Claims (15, 16)
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17. A user interface control method of a portable terminal including a camera module, the method comprising:
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capturing first and second images through a camera module; recognizing, by a pattern recognition unit, patterns of the first and second images by calculating positions of target points extracted from the first and second images respectively; analyzing, by a pattern analysis unit, the recognized patterns by calculating an average displacement m and a distance change from the positions of the target points and comparing the average displacement m with the distance change; selecting, by the pattern analysis unit, a control command based on the analysis result; and performing, by a controller, a function corresponding to the control command. - View Dependent Claims (18, 19)
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20. A user interface control method of a portable terminal including a camera module, the method comprising:
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capturing first and second images corresponding to motion of a portable terminal through a camera module; recognizing, by a pattern recognition unit, patterns of the first and second images by calculating positions of target points extracted from the first and second images respectively; analyzing, by a pattern analysis unit, the motion of the portable terminal based on the recognized patterns by calculating a displacement angle θ
based on the positions of the target points;selecting, by the pattern analysis unit, a control command corresponding to the analyzed motion of the portable terminal; and performing, by a controller, a function corresponding to the control command. - View Dependent Claims (21, 22, 23, 24)
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25. A portable terminal comprising:
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a camera module for capturing first and second images; a pattern recognition unit for recognizing patterns of the first and second images by calculating positions of target points extracted from the first and second images respectively; a pattern analysis unit for analyzing the recognized patterns, based on the pattern recognition result of the pattern recognition unit by calculating a displacement angle θ
based on the positions of the target points, and for selecting a control command based on the analysis result; anda controller for performing a function corresponding to the control command.
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Specification