Fingertip positioning method and fingertip positioning terminal
A positioning method and technology for positioning terminals, which are applied in the directions of instrument, character and pattern recognition, input/output of user/computer interaction, etc., can solve the problems of misjudging the position of fingertips, affecting the running speed, and large amount of calculation, etc. The effect of reducing the amount of calculation, increasing the running speed, and reducing the number of
Inactive Publication Date: 2014-10-15
DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY +1
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Problems solved by technology
[0004] However, the above-mentioned fingertip positioning method needs to take out a large number of points from the edge of the palm contour to calculate the curvature, so the requirement for the precision of extracting the palm contour is very high. Determine the position of the fingertip; at the same time, the above fingertip positioning method must take out a large number of points for curvature calculation, which makes the calculation amount very large and affects the running speed
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[0094] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.
[0095] Please refer to figure 2 , the flowchart of an embodiment of the fingertip positioning method of the present invention includes the following steps:
[0096] Step S101, acquiring a gesture image including gestures; specifically, the gesture image can be acquired by taking pictures with a camera;
[0097] Step S102, extracting the palm outline from the gesture image, wherein the extracted palm outline is as follows image 3 shown by the solid line;
[0098] Specifically, there are many ways to extract the outline of the palm from the gesture image, which can be extracted by ultrasonic or infrared technology, image segmentation, or skin color detection.
[0099] In this embodiment, the palm outline is extracted by skin color detection as an example for illustration. Specifically, the specific process of extracti...
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The invention discloses a fingertip positioning method. The fingertip positioning method includes the following steps: acquiring a gesture image containing a gesture; extracting palm profile from the gesture image; performing polygonal approximation on the palm profile to acquire a profile convex hull; sequentially judging whether each convex point of the profile convex hull to be a fingertip point or not. According to the fingertip positioning method, the profile convex hull is acquired by performing polygonal approximation on the palm profile, and a fingertip in the gesture usually corresponds to position of a convex point in the profile convex hull, so that a user only needs to judge whether each convex point is the fingertip point or not, number of fingertip points needed to be judged is reduced, calculation quantity is reduced, running speed is increased, and realtime requirements are met; curvature calculation of edge points on the palm profile is not needed, so that the extracted palm profile is allowed to have a certain error, and requirements on accuracy of the extracted palm profile are lowered. The invention further discloses a fingertip positioning terminal.
Description
technical field [0001] The present invention relates to the technical field of computer image processing and recognition, and more specifically to a fingertip positioning method and a fingertip positioning terminal. Background technique [0002] In recent years, the intelligent human-computer interaction technology based on the human hand has occupied an increasingly important position due to its flexible and natural characteristics, and the direct operation of electronic devices through gestures has become increasingly mature. Compared with traditional technical means that require access to hardware devices, it is closer to the core concept of human-computer interaction and has a better user experience. The high freedom and flexibility of the fingertips in the middle make it contain richer connotations than other parts. Changes in the number and position of fingertips can be mapped to rich semantics. On this basis, a series of applications can be developed, such as Virtual...
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IPC IPC(8): G06F3/01G06K9/00
Inventor 叶志勇姚美叶吕勇张贝源王文俊
Owner DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY