Patent ID: 8649559

Claim:
A method of recognizing a user's dynamic organ for use in an electric-using apparatus, the method comprising: generating a skin color image from a target image inputted through an imaging element; scanning the skin color image using a window; generating a HOG descriptor of a region of the skin color image that is scanned when it is judged that the scanned region includes a dynamic organ; measuring a resemblance value between the HOG descriptor of the scanned region and a HOG descriptor of a query template for a gesture of the dynamic organ; and judging that the scanned region includes the gesture of the dynamic organ when the resemblance value meets a predetermined condition, wherein generating the HOG descriptor of the scanned region includes: generating a HOS (high order statistics) map for the scanned region using a HOS information for brightness of the scanned region; and generating the HOG descriptor of the scanned region based upon the HOS map, wherein the HOS information is found through second and third expressions, wherein the second expression is m ( 2 ) ⁡ ( x , y ) = 1 N B ⁢ ∑ ( x , y ) ∈ B ⁡ ( x , y ) ⁢ ⁢ ( I ⁡ ( x , y ) - m ^ ⁡ ( x , y ) ) 2 (where the B(x,y) is a set of a pixel at a coordinate (x,y) and the surrounding pixels, the N B is a magnitude of the B(x,y), the I(x,y) is a brightness of the pixel at the coordinate (x,y), the {circumflex over (m)}(x,y) is an average brightness of the B(x,y), and the m (2) (x, y) is a second-order moment), and wherein the third expression is HOS ⁡ ( x , y ) = MIN ( UL , m ( 2 ) ⁡ ( x , y ) DSF ) (where the UL is a top limit value, and the DSF is a down scaling factor), and wherein generating the skin color image from the target image includes applying a HSI (hue saturation intensity) color model to the target image to generate the skin color image.