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Gesture recognition method and apparatus with improved background suppression

A background interference and gesture technology, applied in image data processing, instrument, character and pattern recognition, etc., to avoid misjudgment

Active Publication Date: 2014-02-12
PIXART IMAGING INC
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Problems solved by technology

[0004] In other words, if the user swings his hand from left to right, the resulting center of gravity positions P1-P7 of the object will appear as follows: Figure 1F In the trajectory shown, since the displacement Δx=0, the processor may judge that the user's gesture is an action of drawing a circle and misjudge it

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  • Gesture recognition method and apparatus with improved background suppression
  • Gesture recognition method and apparatus with improved background suppression
  • Gesture recognition method and apparatus with improved background suppression

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[0041] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0042] figure 2 It is a schematic diagram of a gesture judging device according to an embodiment of the present invention. Please refer to figure 2 , the gesture determination device 200 of this embodiment includes an image acquisition unit 210 and a processing unit 220 . The image acquisition unit 210 may be a complementary metal-oxide-semiconductor (Complementary Metal-Oxide-Semiconductor, CMOS) image sensor or a charge-coupled device (Charge-coupled Device, CCD) image sensor, wherein the imag...

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Abstract

A gesture recognition method with improved background suppression includes the following steps. First, a plurality of images are sequentially captured. Next, a position of at least one object in each of the images is calculated to respectively obtain a moving vector of the object at different times. Then, an average brightness of the object in each of the images is calculated. Finally, magnitudes of the moving vectors of the object at different times are respectively adjusted according to the average brightness of the object in each of the images. There is further provided a gesture recognition apparatus using the method mentioned above.

Description

technical field [0001] The present invention relates to a gesture judging method and its device, and in particular to a gesture judging method capable of reducing background interference and its device. Background technique [0002] Figure 1A-Figure 1E is a continuous schematic diagram of the user's gestures waving from left to right, and Figure 1F then Figure 1A-Figure 1E Schematic diagram of the trajectory of the continuous movement of the object's center of gravity. Please refer to Figure 1A , firstly the user's hand has not moved yet, and the Figure 1A The image I1 can vaguely see the user's body as the background image. Next, by Figure 1B-Figure 1D It can be found that when the user's hand image moves from left to right, the hand first gradually becomes larger and brighter, then gradually becomes smaller and darker, and finally returns to the user's body as the background image. [0003] Generally speaking, when calculating the position of an object, the posi...

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Application Information

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IPC IPC(8): G06K9/00
CPCG06K9/00335G06V40/20G06T7/60G06T7/50
Inventor 黄昱豪高铭璨黄森煌
Owner PIXART IMAGING INC
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