Abstract: A depth determining method and a depth determining device of an operating body are provided. The depth determining method includes following steps: deriving a first image and a second image that include the operating body from the at least two image capturing units respectively to calculate a first width of the operating body and a first displacement distance of the operating body between the first image and the second image in a first time point; deriving the first image and the second image that include the operating body from the at least two image capturing units respectively to calculate a second width of the operation body in a second time point; and calculating displacement depth of operating body between the first time point and the second time point by a transform function according to the first displacement distance and a different between the first width and the second width.

Abstract: An optical touch module, a method for determining gestures thereof and a computer-readable medium are provided. The method includes the following steps. A plurality of first sensing results outputted by a first optical sensor which continuously senses a touch area from a first corner of the touch area are obtained. A plurality of second sensing results outputted by a second optical sensor which continuously senses the touch area from a second corner of the touch area are obtained. A gesture is determined according a first center of a plurality of first touch reference points of each of the first sensing results and a second center of a plurality of second touch reference points of each of the second sensing results.

Abstract: A locating method, a locating device, a depth determining method, and a depth determining device of an operating body are provided. The locating method includes following steps: deriving an image that includes an operating body; scanning the image transversely according to each of scan lines of the image, and deriving each of width values of the operating body in each of the scan lines according to the bright dot information in each of the scan lines of the image; calculating a relative variation level between each of the width values in the adjacent scan line sequentially; when the relative variation level is less than a threshold, determining a locating point of the operating body according to one of the scan lines and one of the width values corresponding to the relative variation level.

Abstract: A gesture recognition module for recognizing a gesture of a user is disclosed. The gesture recognition module comprises an image capturing unit, for capturing a first pixel value, a second pixel value, a third pixel value and a fourth pixel value sequentially of images of the gesture of the user; a computing unit, coupled to the image capturing unit, for determining a first minimum surrounding shape comprising a first pixel difference between the first pixel value and the second pixel value, and determining a second minimum surrounding shape comprising a second pixel difference between the third pixel value and the fourth pixel value; and a determining unit, coupled to the computing unit, for determining the gesture according to a relation between the first minimum surrounding shape and the second minimum surrounding shape.

Abstract: An optical touch system is provided. At least one light source is disposed at a side of a base plane. A first optical sensor and a second optical sensor detect a space in front of the base plane to generate a first signal and a second signal. When two groups of objects approach to or touch the base plane, a processing unit determines at least one first portion of the first signal corresponding to the two groups of the objects and at least one second portion of the second signal corresponding to the two groups of the objects, and converts the at least one first portion and the at least one second portion into a plurality of touch regions, and determines group transformations according to positions corresponding to at least part of touch regions. Additionally, a method of touch detection, and a computer program product are also provided.

Abstract: A locating method, a locating device, a depth determining method, and a depth determining device of an operating body are provided. The locating method includes following steps: deriving an image that includes an operating body; scanning the image transversely according to each of scan lines of the image, and deriving each of width values of the operating body in each of the scan lines according to the bright dot information in each of the scan lines of the image; calculating a relative variation level between each of the width values in the adjacent scan line sequentially; when the relative variation level is less than a threshold, determining a locating point of the operating body according to one of the scan lines and one of the width values corresponding to the relative variation level.

Abstract: A touch control apparatus includes a first light source, a first sensor, a second light source, a second sensor and a controller. A selection method for the touch control apparatus includes steps of: driving the first light to generate a first initial structured light; sensing a first reflected light distribution by the first sensor; driving the second light source to generate a second initial structured light; sensing a second reflected light by the second sensor; and, from multiple candidate touch positions, selecting positions corresponding to at least two touch points according to a first left reflected structured light, a second left reflected structured light, a first right reflected structured light and a second right reflected structured light.

Abstract: A touch sensing module including a plurality of image sensors and a processing unit is provided. The image sensors are disposed beside a reference plane and configured to detect the reference plane and to convert a detection result into a plurality of image signals respectively. The processing unit is configured to receive and process the image signals from the image sensors. When an object moves with respect to the reference plane in a plurality of first times and intersects or approaches the reference plane in each of the first times, the processing unit selects one first diagonal having the least length variation in the first times from a plurality of first diagonals of a first polygon surrounding the object in each first time to be a first orientation diagonal corresponding to a real orientation of the object. A touch sensing method and a computer program product are also provided.

Abstract: An optical touch device includes an indication plane, two image sensing units and a processing unit. The two image sensing units are disposed at two corners of the indication plane diagonal to each other, respectively, and the two corners define a diagonal line connected therebetween. The processing unit is electrically connected to the two image sensing units. When two touch points are performed on the indication plane, the processing unit determines whether the two touch points are located at opposite sides of the diagonal line, respectively, according to images sensed by the two image sensing units. Once the two touch points are located at opposite sides of the diagonal line, respectively, the processing unit calculates and outputs coordinates of the two touch points immediately according to the images sensed by the two image sensing units.

Abstract: A gesture detecting method is adapted to an optical touch device. The optical touch device includes an indication plane and two image sensing units disposed at two corners of one side of the indication plane. The gesture detecting method includes steps of sensing two images of a gesture by the two image sensing units, wherein the gesture is performed on the indication plane; determining whether at least two touch points exist in one of the two images; if at least two touch points exist in one of the two images, generating a quadrangle according to a far left boundary and a far right boundary of each of the two images; calculating a reference radius of a reference circle corresponding to the quadrangle; and determining whether the gesture is a grab gesture according to a variance of the reference radius.

Abstract: A touch control apparatus includes a first light source, a first sensor, a second light source, a second sensor and a controller. An associated selection method includes following steps. The first and the second light sources are driven to respectively generate a first and a second plane lights. Both the first and the second plane light are reflected by at least two touch points. A left reflected light distribution is sensed and transformed into multiple left depth parameters by the first sensor, and a right reflected light distribution is sensed and transformed into multiple right depth parameters by the second sensor. Correspondingly, positions of the at least two touch points are selected from the candidate touch points according to the left and right depth parameters.

Abstract: A touch sensing module including a plurality of image sensors and a processing unit is provided. The image sensors are disposed beside a reference plane and configured to detect the reference plane and to convert a detection result into a plurality of image signals respectively. The processing unit is configured to receive and process the image signals from the image sensors. When an object moves with respect to the reference plane in a plurality of first times and intersects or approaches the reference plane in each of the first times, the processing unit selects one first diagonal having the least length variation in the first times from a plurality of first diagonals of a first polygon surrounding the object in each first time to be a first orientation diagonal corresponding to a real orientation of the object. A touch sensing method and a computer program product are also provided.

Abstract: A locating method, a locating device, a depth determining method, and a depth determining device of an operating body are provided. The locating method includes following steps: deriving an image that includes an operating body; scanning the image transversely according to each of scan lines of the image, and deriving each of width values of the operating body in each of the scan lines according to the bright dot information in each of the scan lines of the image; calculating a relative variation level between each of the width values in the adjacent scan line sequentially; when the relative variation level is less than a threshold, determining a locating point of the operating body according to one of the scan lines and one of the width values corresponding to the relative variation level.

Abstract: An optical touch system is provided. At least one light source is disposed at a side of a base plane. A first optical sensor and a second optical sensor detect a space in front of the base plane to generate a first signal and a second signal. When two groups of objects approach to or touch the base plane, a processing unit determines at least one first portion of the first signal corresponding to the two groups of the objects and at least one second portion of the second signal corresponding to the two groups of the objects, and converts the at least one first portion and the at least one second portion into a plurality of touch regions, and determines group transformations according to positions corresponding to at least part of touch regions. Additionally, a method of touch detection, and a computer program product are also provided.

Abstract: A gesture detecting method is adapted to an optical touch device. The optical touch device includes an indication plane and two image sensing units disposed at two corners of one side of the indication plane. The gesture detecting method includes steps of sensing two images of a gesture by the two image sensing units, wherein the gesture is performed on the indication plane; determining whether at least two touch points exist in one of the two images; if at least two touch points exist in one of the two images, generating a quadrangle according to a far left boundary and a far right boundary of each of the two images; calculating a reference radius of a reference circle corresponding to the quadrangle; and determining whether the gesture is a grab gesture according to a variance of the reference radius.

Abstract: Methods for determining positions of objects for use in an optical touch system are provided. The optical touch system at least includes a depth image sensor and a touch plane, the depth image sensor having a sensing area covering the touch plane. First, when an object is detected by the depth image sensor, image information is obtained by using the depth image sensor, wherein the image information includes angle information and depth information related to the depth image sensor for the object. Thereafter, it is determined whether a position of the object is located at the inside or the outside of the touch plane according to the angle information and the depth information.

Abstract: An input device includes a housing; a plurality of keyswitches disposed on the housing; a touch panel disposed on the housing; and a processing unit disposed in the housing and electrically connected to the keyswitches and the touch panel, the processing unit being used for switching coordinate information outputted by the touch panel to a cursor control function or a virtual numeric keypad function.

Abstract: A touch control apparatus includes a first light source, a first sensor, a second light source, a second sensor and a controller. An associated selection method includes following steps. The first and the second light sources are driven to respectively generate a first and a second plane lights. Both the first and the second plane light are reflected by at least two touch points. A left reflected light distribution is sensed and transformed into multiple left depth parameters by the first sensor, and a right reflected light distribution is sensed and transformed into multiple right depth parameters by the second sensor. Correspondingly, positions of the at least two touch points are selected from the candidate touch points according to the left and right depth parameters.

Abstract: A touch control apparatus includes a first light source, a first sensor, a second light source, a second sensor and a controller. A selection method for the touch control apparatus includes steps of: driving the first light to generate a first initial structured light; sensing a first reflected light distribution by the first sensor; driving the second light source to generate a second initial structured light; sensing a second reflected light by the second sensor; and, from multiple candidate touch positions, selecting positions corresponding to at least two touch points according to a first left reflected structured light, a second left reflected structured light, a first right reflected structured light and a second right reflected structured light.

Abstract: A gesture recognition module for recognizing a gesture of a user is disclosed. The gesture recognition module comprises an image capturing unit, for capturing a first pixel value, a second pixel value, a third pixel value and a fourth pixel value sequentially of images of the gesture of the user; a computing unit, coupled to the image capturing unit, for determining a first minimum surrounding shape comprising a first pixel difference between the first pixel value and the second pixel value, and determining a second minimum surrounding shape comprising a second pixel difference between the third pixel value and the fourth pixel value; and a determining unit, coupled to the computing unit, for determining the gesture according to a relation between the first minimum surrounding shape and the second minimum surrounding shape.