Gesture recognition system and gesture recognition method thereof

A gesture recognition system, recognizing two-hands gestures, comprising:

• a first lighting module for emitting a first light according to a first lighting control signal, wherein the first light has a first light illumination range;
• a third lighting module for emitting a third light according to a third lighting control signal, wherein the third light has a third light illumination range;
• a first angle detecting module for receiving a first reflection light of the first light according to an first angle detecting control signal, and outputting a first light sensing signal according to the first reflection light, wherein the first reflection light is generated from the reflection resulted when the first light illuminates a first hand;
• a second angle detecting module for receiving a third reflection light of the third light according to an second angle detecting control signal, and outputting a second light sensing signal according to the third reflection light, wherein the third reflection light is generated from the reflection resulted when the third light illuminates a second hand;
• an image capturing module capturing at least one two-dimensional reference image of the first hand and the second hand, and outputting the two-dimensional reference image, wherein the distance between the first angle detecting module and the image capturing module is a first fixed length and the distance between the second angle detecting module and the image capturing module is a second fixed length;
• and
• a gesture information control module electrically connected to the first lighting module, the third lighting module, the first angle detecting module, the second angle detecting module and the image capturing module, and the gesture information control module acquiring a first angle reference data and a second angle reference data respectively according to the first light sensing signal and the two dimension reference image and acquiring a third angle reference data and a fourth angle reference data respectively according to the second light sensing signal and the two-dimensional reference image;
• wherein the gesture information control module calculates a first depth data and a first horizontal displacement data of the first hand according to the first angle reference data, the second angle reference data and the first fixed length and calculates a second depth data and a second horizontal displacement data of the second hand according to the third angle reference data, the fourth angle reference data and the second fixed length, so as to recognize gestures of the first hand and the second hand;
• wherein the gesture information control module respectively transmits the first lighting control signal, the third lighting control signal, the first angle detecting control signal and the second angle detecting control signal to the first lighting module, the third lighting module, the first angle detecting module and the second angle detecting module.

A gesture recognition method, used in a gesture recognition system recognizing single-hand gestures, the gesture recognition system comprising a first lighting module, an angle detecting module, an image capturing module and a gesture information control module, the gesture information control module electrically connected to the first lighting module, the image capturing module and the angle detecting module, and the gesture recognition method comprising:

• emitting a first light by the first lighting module according to a first lighting control signal, wherein the first light has a first light illumination range;
• receiving a first reflection light of the first light by the angle detecting module according to an angle detecting control signal and outputting a light sensing signal according to the first reflection light, wherein the first reflection light is generated from the reflection resulted when the first light illuminates the single hand;
• capturing at least one two-dimensional reference image of the single hand from the image capturing module, wherein the distance between the angle detecting module and the image capturing module is a fixed length;
• acquiring a first angle reference data and a second angle reference data by the gesture information control module respectively according to the light sensing signal and the two-dimensional reference image;
• and
• calculating a depth data and a horizontal displacement data of the single hand by the gesture information control module according to the first angle reference data, the second angle reference data and the fixed length, so as to recognize single-hand gestures;
• wherein the gesture information control module respectively transmits the first lighting control signal and the angle detecting control signal to the first lighting module and the angle detecting module.

A gesture recognition method, used in a gesture recognition system for recognizing two-hands gestures, the gesture recognition system comprises a first lighting module, a third lighting module, a first angle detecting module, a second angle detecting module, an image capturing module and a gesture information control module, the gesture information control module electrically connected to the first lighting module, the third lighting module, the first angle detecting module, the second angle detecting module and the image capturing module, and the gesture recognition method comprising:

• emitting a first light by the first lighting module according to a first lighting control signal wherein the first light has a first light illumination range;
• emitting a third light by third lighting module the according to a third lighting control signal wherein the third light has a third light illumination range;
• receiving a first reflection light of the first light by the first angle detecting module according to a first angle detecting control signal, and outputting a first light sensing signal according to the first reflection light, wherein the first reflection light is generated from the reflection resulted when the first light illuminates a first hand;
• receiving a third reflection light of the third light by the second angle detecting module according to a second angle detecting control signal, and outputting a second light sensing signal according to the third reflection light, wherein the third reflection light is generated from the reflection resulted when the third light illuminates a second hand;
• capturing at least one two-dimensional reference image of the first hand and the second hand by the image capturing module, and outputting the two-dimensional reference image, wherein the distance between the first angle detecting module and the image capturing module is a first fixed length and the distance between the second angle detecting module and the image capturing module is a second fixed length;
• acquiring a first angle reference data and a second angle reference data respectively according to the first light sensing signal and the two-dimensional reference image by the gesture information control module, and acquiring a third angle reference data and a fourth angle reference data respectively according to the second light sensing signal and the two-dimensional reference image;
• and
• calculating a first depth data and a first horizontal displacement data of the first hand according to the first angle reference data, the second angle reference data and the first fixed length by the gesture information control module, and calculating a second depth data and a second horizontal displacement data of the second hand according to the third angle reference data, the fourth angle reference data and the second fixed length by the gesture information control module, so as to recognize gestures of the second hand;
• wherein the gesture information control module respectively transmits the first lighting control signal, the third lighting control signal, the first angle detecting control signal and the second angle detecting control signal to the first lighting module, the third lighting module, the first angle detecting module and the second angle detecting module.