VIDEO BASED APPARATUS AND METHOD FOR CONTROLLING THE CURSOR
First Claim
Patent Images
1. An apparatus for controlling a cursor, comprising:
- an image capturing unit, for receiving a hand image of a user; and
an image processing unit, coupled to the image capturing unit, for extracting features of the hand image, and determining whether the hand image presents a “
V”
shaped hand gesture or not, and if yes, three feature points of the “
V”
shaped hand gesture are respectively corresponding to coordinates of a cursor, a mouse left button, and a mouse right button,wherein the three feature points of the “
V”
shaped hand gesture comprises a first finger image, a second finger image, and a valley point of a “
V”
shape formed there-between, the image processing unit controls the cursor, the mouse left button, and the mouse right button according to the extracted three feature points of the “
V”
shaped hand gesture, wherein the first finger image is corresponding to the mouse left button, the second finger image is corresponding to the mouse right button, a position variation of the valley part of the “
V”
shape formed by the first finger image and the second finger image is corresponding to a position of the cursor.
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Abstract
A video-based apparatus and method for controlling the cursor are provided. A video camera is used to acquire a hand image of a user, and then the image is analyzed and processed to move the cursor and to take place of functions of a mouse left button and a mouse right button. The user may use a “V” shaped hand gesture to replace the mouse. An index finger image is corresponding to the mouse left button, and a middle finger image is corresponding to the mouse right button. A valley point of the “V” shaped hand gesture is corresponding to the position of the cursor.
25 Citations
15 Claims
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1. An apparatus for controlling a cursor, comprising:
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an image capturing unit, for receiving a hand image of a user; and an image processing unit, coupled to the image capturing unit, for extracting features of the hand image, and determining whether the hand image presents a “
V”
shaped hand gesture or not, and if yes, three feature points of the “
V”
shaped hand gesture are respectively corresponding to coordinates of a cursor, a mouse left button, and a mouse right button,wherein the three feature points of the “
V”
shaped hand gesture comprises a first finger image, a second finger image, and a valley point of a “
V”
shape formed there-between, the image processing unit controls the cursor, the mouse left button, and the mouse right button according to the extracted three feature points of the “
V”
shaped hand gesture, wherein the first finger image is corresponding to the mouse left button, the second finger image is corresponding to the mouse right button, a position variation of the valley part of the “
V”
shape formed by the first finger image and the second finger image is corresponding to a position of the cursor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for controlling a cursor, comprising:
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capturing a hand image of a user; performing a background removal to extract a motion area; performing a skin color detection on the motion area to extract a hand image area and to filter noises; performing a vertical projection to determine whether the hand image presents a “
V”
shaped hand gesture or not; andif the hand image contains the “
V”
shaped hand gesture, extracting three feature points of the “
V”
shaped hand gesture, and controlling a cursor, a mouse left button, and a mouse right button according to the three feature points of the “
V”
shaped hand gesture,wherein the three feature points of the “
V”
shaped hand gesture comprise a first finger image, a second finger image, and a valley part of a “
V”
shape formed there-between, the first finger image is corresponding to the mouse left button, the second finger image is corresponding to the mouse right button, and a position variation of the valley part of the “
V”
shape formed between the first finger image and the second finger image is corresponding to a position of the cursor. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification