KR102280412B1 - Electronic terminal device that performs control command execution and feedback output corresponding to a user's hand gesture and operating method thereof - Google Patents

Abstract

Disclosed are an electronic terminal device for executing a control command corresponding to a hand gesture of a user and outputting feedback, and an operation method thereof. In accordance with the present invention, when a user makes a predetermined hand gesture, an image of the hand of the user is acquired through a camera, joint points about the hand of the user are extracted from the image, a predetermined reference circle for checking the gesture is created with respect to the hand area of the user, and then, a checking procedure is carried out as to whether any one of the joint points belongs to the reference circle or not, and, as a result, the electronic terminal device can execute a proper control command corresponding to the hand gesture of the user and output feedback. Here, in accordance with the present invention, when the user inputs a hand gesture into the electronic terminal device, feedback corresponding to the same is outputted, and, as a result, the user can be aware of whether the hand gesture inputted by the user is accurately recognized by the electronic terminal device.

Description

An electronic terminal device that executes a control command corresponding to a user's hand gesture and outputs a feedback, and an operating method thereof

The present invention relates to an electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback, and an operating method thereof.

Recently, as various electronic terminal devices equipped with touch screens have been released, various interfacing technologies for controlling such electronic terminal devices have emerged. An electronic terminal device equipped with a touch screen recognizes a user's touch input pattern input on the touch screen and executes a control command corresponding to the pattern.

In addition, recently, with the advent of virtual reality (VR) devices, research on an interfacing technology that allows a device to be controlled only with a user's gesture without a separate controller is being actively conducted.

This interfacing technique is configured to photograph a user's hand shape through a predetermined camera and then apply an appropriate control command corresponding thereto to the electronic terminal device according to the user's hand shape in the captured image.

In this way, the interfacing technology, which allows the user to control the device only by making a specific shape of the hand, has high utility in next-generation multimedia equipment that does not use a separate controller, such as a VR device, so the demand for the technology is high. is a growing trend.

On the other hand, when using an interfacing technology that allows a user to control a device using only a gesture, it is often difficult to determine whether the user has properly recognized the gesture in the electronic terminal device. Therefore, when the user recognizes the gesture to the electronic terminal device, there is a need to introduce a feedback technology for notifying the user whether the gesture has been correctly recognized.

For example, if feedback such as a specific animation effect is displayed or a sound is output when the user recognizes a predetermined gesture in the electronic terminal device, the user can easily determine whether the user has correctly recognized the gesture in the electronic terminal device. you will be able to figure out If the feedback corresponding to the specific gesture input by the user is not output, the user may recognize that the gesture is not properly recognized in the electronic terminal device, and by re-recognizing the gesture in the electronic terminal device, a control command desired by the user can be accurately applied to the electronic terminal device.

According to the present invention, when the user takes a predetermined hand shape, an image of the user's hand is obtained through a camera, joint points of the user's hand are extracted from the image, and gesture confirmation is performed on the user's hand region. An electronic terminal device capable of executing an appropriate control command corresponding to a user's hand shape by generating a predetermined reference circle for would like to present

In addition, the electronic terminal device and the method for operating the same according to the present invention output a corresponding feedback when a user inputs a hand gesture to the electronic terminal device, so that the hand gesture input by the user is accurately performed in the electronic terminal device. We want to support you in recognizing whether it has been recognized or not.

According to an embodiment of the present invention, the electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback is a plurality of preset different control commands and corresponding to each of the plurality of control commands. A plurality of preset different n (n is a natural number greater than or equal to 2) dimensional gesture determination reference vectors - Each of the plurality of gesture determination reference vectors is a vector having codes of '0' and '1' as components - this storage A gesture determination reference vector storage unit, the plurality of gesture determination reference vectors, and a plurality of different gesture matching notification feedback output information preset to correspond to each of the plurality of gesture determination reference vectors - the plurality of gestures Each of the matching notification feedback output information means information on feedback that can be output through the electronic terminal device - by capturing the user's hand through the stored gesture matching notification feedback output information storage unit and the camera An image acquisition unit for acquiring an image including the user's hand, a joint point extraction unit for detecting the user's hand region from the image, and extracting n joint points from the user's hand region, the user's hand region A reference circle generator for generating a virtual reference circle (Circle) for confirming a gesture, by checking whether the n joint points are located inside the virtual reference circle, the virtual among the n joint points By assigning a code of '1' to a point located inside the reference circle of , and a code of '0' to a point located outside the virtual reference circle, to each of the n joint points After calculating the similarity between the gesture vector and each of the plurality of gesture determination reference vectors stored in the gesture vector generation unit and the gesture determination reference vector storage unit for generating an n-dimensional gesture vector having the assigned code as a component, It is confirmed that the plurality of gesture determination reference vectors have the highest degree of similarity. A similarity calculating unit that selects a first gesture determination reference vector to be used. When the first gesture determination reference vector is selected, whether the similarity of the maximum value calculated between the first gesture determination reference vector and the gesture vector exceeds a preset threshold. If it is confirmed that the similarity of the maximum value exceeds the threshold, the first gesture matching notification feedback output information stored in correspondence with the first gesture determination reference vector is retrieved from the gesture matching notification feedback output information storage unit. After extraction, a feedback output unit for outputting a feedback according to the first gesture matching notification feedback output information through the electronic terminal device, and when the feedback according to the first gesture matching notification feedback output information is output, the gesture determination criterion vector storage unit and a control command execution unit configured to execute the first control command after checking a first control command stored in correspondence with the first gesture determination reference vector as a control command corresponding to the shape of the user's hand.

In addition, the method of operating an electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback according to an embodiment of the present invention includes a plurality of preset different control commands and the plurality of control commands. A plurality of different n (n is a natural number greater than or equal to 2) dimensional gesture determination reference vectors preset to correspond to each - Each of the plurality of gesture determination reference vectors has a code of '0' and '1' as a component vector - maintaining the stored gesture determination reference vector storage unit, the plurality of gesture determination reference vectors, and a plurality of different gesture matching notification feedback preset to correspond to each of the plurality of gesture determination reference vectors The output information - each of the plurality of gesture matching notification feedback output information means information on feedback outputable through the electronic terminal device - maintaining the stored gesture matching notification feedback output information storage unit; acquiring an image including the user's hand by photographing the user's hand through the steps, detecting the user's hand area from the image, and extracting n joint points from the user's hand area, the user generating a virtual reference circle for gesture confirmation for a hand region of , checking whether the n joint points are located inside the virtual reference circle and checking whether the n joint points are the virtual reference circle among the n joint points A code assigned to each of the n joint points by assigning a code of '1' to a point located inside of and assigning a code of '0' to a point located outside the virtual reference circle generating an n-dimensional gesture vector having as a component, calculating a degree of similarity between each of the plurality of gesture determination reference vectors stored in the gesture determination reference vector storage unit and the gesture vector, and then determining the plurality of gesture determination standards Determining the first gesture confirmed to have the maximum similarity among vectors selecting a reference vector; if the first gesture determination reference vector is selected, it is checked whether the degree of similarity between the maximum value calculated between the first gesture determination reference vector and the gesture vector exceeds a preset threshold, and the maximum value When it is confirmed that the similarity of , exceeds the threshold, first gesture matching notification feedback output information stored in correspondence to the first gesture determination reference vector is extracted from the gesture matching notification feedback output information storage unit, and then the first gesture outputting a feedback according to the matching notification feedback output information through the electronic terminal device, and when the feedback according to the first gesture matching notification feedback output information is output, the first gesture determination reference vector from the gesture determination reference vector storage unit and executing the first control command after confirming that the stored first control command corresponds to the control command corresponding to the shape of the user's hand.

According to the present invention, when the user takes a predetermined hand shape, an image of the user's hand is obtained through a camera, joint points of the user's hand are extracted from the image, and gesture confirmation is performed on the user's hand region. An electronic terminal device capable of executing an appropriate control command corresponding to a user's hand shape by generating a predetermined reference circle for can present

In addition, the electronic terminal device and the method for operating the same according to the present invention output a corresponding feedback when a user inputs a hand gesture to the electronic terminal device, so that the hand gesture input by the user is accurately performed in the electronic terminal device. It can help to recognize whether or not it has been recognized.

1 is a diagram showing the structure of an electronic terminal device according to an embodiment of the present invention.
2 to 5 are diagrams for explaining the operation of the electronic terminal device according to an embodiment of the present invention.
6 is a flowchart illustrating a method of operating an electronic terminal device according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. These descriptions are not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. While describing each drawing, like reference numerals are used for similar components, and unless otherwise defined, all terms used in this specification, including technical or scientific terms, refer to those of ordinary skill in the art to which the present invention belongs. It has the same meaning as is commonly understood by those who have it.

In this document, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, in various embodiments of the present invention, each of the components, functional blocks or means may be composed of one or more sub-components, and the electrical, electronic, and mechanical functions performed by each component are electronic. A circuit, an integrated circuit, an ASIC (Application Specific Integrated Circuit), etc. may be implemented as various well-known devices or mechanical elements, and may be implemented separately or two or more may be integrated into one.

On the other hand, the blocks in the accompanying block diagram or steps in the flowchart are computer program instructions that are loaded in a processor or memory of equipment capable of data processing, such as a general-purpose computer, a special-purpose computer, a portable notebook computer, and a network computer, and perform specified functions. can be interpreted as meaning Since these computer program instructions may be stored in a memory provided in a computer device or in a memory readable by a computer, the functions described in the blocks of the block diagrams or the steps of the flowcharts are produced as articles of manufacture containing instruction means for performing the same. could be In addition, each block or each step may represent a module, segment, or portion of code comprising one or more executable instructions for executing the specified logical function(s). It should also be noted that, in some alternative embodiments, it is also possible for the functions recited in blocks or steps to be executed out of the prescribed order. For example, two blocks or steps shown one after another may be performed substantially simultaneously or in the reverse order, and in some cases, some blocks or steps may be omitted.

1 is a diagram illustrating a structure of an electronic terminal device that executes a control command corresponding to a user's hand gesture and outputs a feedback according to an embodiment of the present invention.

Referring to FIG. 1 , the electronic terminal device 110 according to the present invention includes a gesture determination reference vector storage unit 111 , a gesture matching notification feedback output information storage unit 112 , an image acquisition unit 113 , and a joint point extraction unit. 114 , a reference circle generating unit 115 , a gesture vector generating unit 116 , a similarity calculating unit 117 , a feedback output unit 118 , and a control command executing unit 119 .

In the gesture determination reference vector storage unit 111, a plurality of different preset control commands and a plurality of different n (n is a natural number greater than or equal to 2) dimensional gestures preset to correspond to each of the plurality of control commands are determined. Reference vectors are stored.

Here, each of the plurality of gesture determination reference vectors means a vector having codes of '0' and '1' as components.

In relation to this, when 'n=21', information may be stored in the gesture determination reference vector storage unit 111 as shown in Table 1 below.

multiple control commands a plurality of gesture criterion vectors control command 1 [1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0] control command 2 [0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0] control command 3 [0 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0] ... ...

The gesture matching notification feedback output information storage unit 112 stores the plurality of gesture determination reference vectors and a plurality of different gesture matching notification feedback output information preset to correspond to each of the plurality of gesture determination reference vectors, there is.

Here, each of the plurality of gesture matching notification feedback output information means information on feedback outputable through the electronic terminal device 110 . In this regard, as feedback corresponding to each of the plurality of gesture matching notification feedback output information, a predetermined sound effect that may be output through a speaker of the electronic terminal device 110, A predetermined screen animation effect that can be applied, light of a specific color that can be output through the LED module mounted on the electronic terminal device 110 , vibration feedback that can be output through a haptic module mounted on the electronic terminal device 110 , etc. means

In relation to this, information as shown in Table 2 below may be stored in the gesture matching notification feedback output information storage unit 112 .

a plurality of gesture criterion vectors A plurality of gesture matching notification feedback output information [1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0] Output sound effect through the speaker [0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0] Output animation effects through the display [0 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0] Output vibration feedback through the haptic module ... ...

The image acquisition unit 113 acquires an image including the user's hand by photographing the user's hand through a camera.

The joint point extraction unit 114 detects the user's hand region from the image, and extracts n joint points from the user's hand region.

Here, the joint point extraction unit 114 may extract the n joint points from the user's hand region by utilizing a CPM (Convolutional Pose Machines) technology.

CPM is a model that trains a network that outputs a human pose for one person. In order to understand the relationship between human joints and refine the output, it is constructed in the form of a multi-state network and evaluated. It is a model characterized by evaluation. It has a network structure that outputs the heatmap of each joint using CNN (Convolutional Neural Networks), and the result of Stage 1 is used again as an input of Stage 2 together with image features. The final result of processing over , becomes the output of the CPM network. This is because, in the early stage, joints are found through a part of the image area, and in the later stage, the relationship between different joints is considered due to the effect of the larger Receptive Field, so that more accurate heatmap results can be obtained.

At this time, the joint point extraction unit 114 utilizes this CPM technology to extract 21 joint points (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21) can be extracted.

At this time, according to an embodiment of the present invention, the joint point extraction unit 114 allocates a sequence number corresponding to each of the n joint points based on the location of the n joint points in the user's hand region. can

In relation to this, as shown in the figure shown in FIG. 2 , the joint point extraction unit 114 may allocate the order numbers 1 to 21 one by one according to the positions of the 21 joint points in the user's hand region.

The reference circle generator 115 generates a virtual reference circle for gesture confirmation for the user's hand region.

In relation to this, the reference circle generating unit 115 may generate a virtual reference circle 310 for confirming a gesture with respect to the user's hand region, as shown in the figure indicated by reference numeral 310 in FIG. 3 .

The gesture vector generator 116 checks whether the n joint points are located inside the virtual reference circle, and sets '1' to a point located inside the virtual reference circle among the n joint points. By assigning a code of ' and assigning a code of '0' to a point located outside the virtual reference circle, an n-dimensional gesture vector having a code assigned to each of the n joint points as a component is obtained. create

At this time, according to an embodiment of the present invention, the gesture vector generator 116 designates a code assigned to each of the n joint points as a component of a vector according to an order corresponding to each of the n joint points. By doing so, the gesture vector can be generated.

In relation to, as shown in FIG. 3 , when 21 joint points are extracted and sequential numbers 1 to 21 are assigned, the gesture vector generator 116 generates a virtual reference circle among the 21 joint points. A code of '1' may be allocated to a point located inside the 310 , and a code of '0' may be allocated to a point located outside the virtual reference circle 310 .

Then, the gesture vector generator 116 sequentially designates the codes assigned to each joint point as a component of the vector one by one according to the order of the 21 joint points, so that '[1 1 1 0 1 1 1 1 1 1 0 0 0 1 0 0 0 1 0 0 0]', a 21-dimensional gesture vector can be generated.

The similarity calculating unit 117 calculates a similarity between each of the plurality of gesture determination reference vectors stored in the gesture determination reference vector storage unit 111 and the gesture vector, and then calculates a maximum value of the plurality of gesture determination reference vectors. A first gesture determination reference vector confirmed to have similarity is selected.

At this time, according to an embodiment of the present invention, the similarity calculating unit 117 calculates a Hadamard product between each of the plurality of gesture determination reference vectors and the gesture vector, and according to the operation of the Hadamard product, The number of code values of '1' in components constituting the calculated vector may be calculated with the degree of similarity.

Here, the Hadamard product means the operation of multiplying each component in a vector or matrix of the same size. can

In this regard, as in the above example, the gesture vector generator 116 generates a 21-dimensional gesture vector called '[1 1 1 0 1 1 1 1 1 1 0 0 0 1 0 0 0 1 0 0 0]'. and that the information is stored in the gesture determination reference vector storage unit 111 as shown in Table 1 above, the similarity calculating unit 117 determines the first gesture determination criterion stored in the gesture determination reference vector storage unit 111 . The vectors '[1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0]' and '[1 1 1 0 1 1 1 1 1 0 0 0 1 0 0 0 1 0 0 Component composing the calculated vector after calculating the Hadamard product between gesture vectors called '0]' to calculate the vector called '[1 1 1 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0]' [1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0]' and '[1', which is the number of code values of '1' in 1 1 0 1 1 1 1 1 1 0 0 0 1 0 0 0 1 0 0 0] can be calculated as the degree of similarity between gesture vectors.

In this way, the similarity calculating unit 117 may calculate both the gesture determination reference vectors stored in the gesture determination reference vector storage unit 111 as shown in Table 1 and the similarity between the gesture vectors.

Thereafter, the similarity calculating unit 117 converts the gesture determination reference vector confirmed to have the maximum similarity among the gesture determination reference vectors stored in the gesture determination reference vector storage unit 111 as the first gesture determination reference vector. You can choose.

Meanwhile, a situation in which two or more gesture determination reference vectors identified as having the maximum similarity among the plurality of gesture determination reference vectors exist may be considered.

In relation to this, according to an embodiment of the present invention, the similarity calculating unit 117 determines that there are two or more gesture determination reference vectors that are confirmed to have the maximum similarity among the plurality of gesture determination reference vectors. Any one randomly selected gesture determination reference vector among the above gesture determination reference vectors may be determined as the first gesture determination reference vector.

When the first gesture determination reference vector is selected, the feedback output unit 118 checks whether the similarity of the maximum value calculated between the first gesture determination reference vector and the gesture vector exceeds a preset threshold, and the maximum value If it is confirmed that the similarity of , exceeds the threshold, the first gesture matching notification feedback output information stored in correspondence to the first gesture determination reference vector is extracted from the gesture matching notification feedback output information storage unit 112, and then the second gesture matching notification feedback output information is extracted. 1 A feedback according to the gesture matching notification feedback output information is output through the electronic terminal device 110 .

When the feedback according to the first gesture matching notification feedback output information is output, the control command execution unit 119 stores a first control stored in correspondence with the first gesture determination reference vector from the gesture determination reference vector storage unit 111 . After confirming the command as a control command corresponding to the shape of the user's hand, the first control command is executed.

In this regard, when it is said that the first gesture determination reference vector is selected as '[1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0]', the feedback output unit 118 is The first gesture determination reference vector '[1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0]' and the gesture vector '[1 1 1 0 1 1 1 1 1 1 0] 0 0 1 0 0 0 1 0 0 0], it may be confirmed whether '8', which is the degree of similarity of the maximum value calculated between '8', exceeds the threshold.

If the threshold value is '7', the feedback output unit 118 confirms that '8', which is the similarity of the maximum value, exceeds the threshold value '7', so that the gesture matching notification as shown in Table 2 above The first stored in response to '[1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0]' which is the first gesture determination reference vector from the feedback output information storage unit 112 After extracting 'output sound effect through the speaker' which is gesture matching notification feedback output information, feedback according to 'output sound effect through the speaker' which is the first gesture matching notification feedback output information is output through the electronic terminal device 110 can

That is, the feedback output unit 118 may output a predetermined sound effect through a speaker provided in the electronic terminal device 110 . Through this, the user may determine that the user has properly recognized the gesture by the electronic terminal device 110 .

After that, the control command execution unit 119 receives the '[1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0] from the gesture determination reference vector storage unit 111 as shown in Table 1 above. After checking 'control command 1' stored in correspondence to the gesture determination reference vector ' as a control command corresponding to the user's hand shape, 'control command 1' may be executed.

After all, when the user takes a predetermined hand shape, the electronic terminal device 110 according to the present invention acquires an image of the user's hand through a camera, extracts joint points for the user's hand from the image, , an appropriate control command corresponding to the user's hand shape is executed by generating a predetermined reference circle for gesture confirmation for the user's hand region and checking which of the joint points does not belong to the reference circle. can Through this, the user can easily control the electronic terminal device 110 only by making a predetermined gesture using his/her hand without a separate controller.

In addition, when the user inputs a hand gesture to the electronic terminal device 110 , the electronic terminal device 110 according to the present invention outputs a feedback corresponding thereto, so that the user's inputted hand gesture is the electronic terminal device (110) can be supported to recognize whether it has been correctly recognized.

The electronic terminal device 110 according to the present invention determines the gesture corresponding to the user's hand shape by checking which joint points are included in the reference circle and not included in the reference circle, in that the user's hand is photographed. The size or position of the reference circle needs to be appropriately designated according to the size of the image.

In this regard, according to an embodiment of the present invention, the reference circle generating unit 115 may include a generating unit 120 and an arrangement unit 121 .

The generating unit 120 generates a virtual rectangular area surrounding the user's hand area, compares the virtual rectangular area with a reference rectangular area having a preset shape and size, and compares the reference rectangular area with each other. After confirming the horizontal axis size ratio and the vertical axis size ratio of the virtual rectangular region, the horizontal axis size ratio is multiplied by the horizontal axis diameter of a reference circle having a preset shape and size, and the vertical axis diameter of the reference circle is By multiplying the vertical axis size ratio to change the shape and size of the reference circle, the virtual reference circle is generated.

In addition, the arrangement unit 121 identifies a first point corresponding to a first relative ratio preset with respect to a left point on the horizontal axis of the virtual rectangular area, and on the vertical axis of the virtual rectangular area, the upper end After confirming the second point corresponding to the second relative ratio preset based on the point, the intersection point of the vertical line passing through the first point and the horizontal line passing through the second point is set as the center point of the virtual reference circle By doing so, the imaginary reference circle is arranged on the imaginary rectangular area.

In relation to this, with reference to FIGS. 3 to 5 , the operations of the generating unit 120 and the disposing unit 121 will be described as an example.

As illustrated in FIG. 3 , the generator 120 may generate a virtual rectangular area 320 surrounding the user's hand area in the image.

Then, the generating unit 120 compares the virtual rectangular area 320 with the reference rectangular area 411 having a preset shape and size with each other as shown in reference numeral 410 of FIG. 4 and compares the reference rectangular area with each other. The horizontal axis size ratio and the vertical axis size ratio of the virtual rectangular area 320 to the area 411 may be checked.

After that, the generating unit 120 multiplies the horizontal axis size ratio by the horizontal axis diameter of the reference circle 421 having a preset shape and size as shown in reference numeral 420 of FIG. 4 , and the reference circle By multiplying the vertical axis size ratio with the vertical axis diameter of 421 to change the shape and size of the reference circle 421 , the virtual reference circle 310 may be generated.

For example, when the horizontal axis size ratio is '1.3' and the vertical axis size ratio is '1.8', the generator 120 multiplies the horizontal axis diameter of the reference circle 421 by '1.3', and the vertical axis By multiplying the diameter by '1.8', a virtual reference circle 310 can be created.

In this way, when the virtual reference circle 310 is generated, the arrangement unit 120 sets the first relative preset based on the left point on the horizontal axis of the virtual rectangular area 320 as shown in FIG. 5 . The first point 510 corresponding to the ratio may be checked, and on the vertical axis of the virtual rectangular area 320 , the second point 520 corresponding to the second relative ratio preset based on the upper point may be checked. .

For example, when the first relative ratio is '3/5' and the second relative ratio is '4/7', the arrangement unit 120 selects the left point on the horizontal axis of the virtual rectangular area 320 . Check the point corresponding to '3/5' as the first point 510 as a reference, and subtract the point corresponding to '4/7' based on the upper point on the vertical axis of the virtual rectangular area 320 Two points 520 can be identified.

Thereafter, as shown in the figure shown in FIG. 5 , the arrangement unit 120 sets the intersection point 530 where the vertical line passing through the first point 510 and the horizontal line passing through the second point 520 meet as a virtual reference. By setting the center point of the circle 310 , the virtual reference circle 310 may be disposed on the virtual rectangular area 320 . Through this, the virtual reference circle 310 may be arranged in an appropriate size and shape at an appropriate location on the user's hand region, as shown in the figure shown in FIG. 3 .

6 is a flowchart illustrating a method of operating an electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback according to an embodiment of the present invention.

In step S610, a plurality of different preset control commands and a plurality of different preset n (n is a natural number greater than or equal to 2) dimensional gesture determination reference vectors (the above) are set to correspond to each of the plurality of control commands. Each of the plurality of gesture determination reference vectors is a vector having codes of '0' and '1' as components) and maintains a gesture determination reference vector storage unit in which is stored.

In step S620, the plurality of gesture determination reference vectors and a plurality of different gesture matching notification feedback output information (the plurality of gesture matching notification feedback output) preset to correspond to each of the plurality of gesture determination reference vectors Each piece of information maintains a gesture matching notification feedback output information storage unit in which information on feedback outputable through the electronic terminal device is stored.

In step S630, the user's hand is photographed through a camera to obtain an image including the user's hand.

In step S640, the user's hand region is detected in the image, and n joint points are extracted from the user's hand region.

In step S650, a virtual reference circle for gesture confirmation is generated for the user's hand region.

In step S660, it is checked whether the n joint points are located inside the virtual reference circle, and a code of '1' for a point located inside the virtual reference circle among the n joint points. , and assigning a code of '0' to a point located outside the virtual reference circle, an n-dimensional gesture vector having a code assigned to each of the n joint points as a component is generated.

In step S670, the degree of similarity between each of the plurality of gesture determination reference vectors stored in the gesture determination reference vector storage unit and the gesture vector is calculated, and the maximum similarity of the plurality of gesture determination reference vectors is obtained. A first gesture determination reference vector that is confirmed to be selected is selected.

In step S680, when the first gesture determination reference vector is selected, it is checked whether the degree of similarity of the maximum value calculated between the first gesture determination reference vector and the gesture vector exceeds a preset threshold, and the degree of similarity of the maximum value When it is determined that ? exceeds the threshold, first gesture matching notification feedback output information stored in correspondence with the first gesture determination reference vector is extracted from the gesture matching notification feedback output information storage unit, and then the first gesture matching notification A feedback according to the feedback output information is output through the electronic terminal device.

In step S690, when the feedback according to the first gesture matching notification feedback output information is output, a first control command stored in correspondence to the first gesture determination reference vector is transmitted from the gesture determination reference vector storage unit to the user. and executing the first control command after confirming the control command corresponding to the shape of the hand.

At this time, according to an embodiment of the present invention, in step S640, an order number corresponding to each of the n joint points may be assigned based on the positions of the n joint points in the user's hand region.

In this case, in step S660, the gesture vector may be generated by designating one code assigned to each of the n joint points as a component of the vector according to the order corresponding to each of the n joint points.

In addition, according to an embodiment of the present invention, in step S670, a Hadamard product between each of the plurality of gesture determination reference vectors and the gesture vector is calculated, and a vector calculated according to the operation of the Hadamard product is configured. The number of code values of '1' in the component may be calculated with the degree of similarity.

In addition, according to an embodiment of the present invention, in step S650, a virtual rectangular area surrounding the user's hand area is generated, and the virtual rectangular area and a reference rectangular area having a preset shape and size are defined. After confirming the horizontal axis size ratio and the vertical axis size ratio of the virtual rectangular region with respect to the reference rectangular region by comparing with each other, multiply the horizontal axis size ratio by the horizontal axis diameter of the reference circle having a preset shape and size, generating the virtual reference circle by changing the shape and size of the reference circle by multiplying the vertical axis size ratio by the vertical axis diameter of the reference circle; A first point corresponding to a preset first relative ratio is identified as a reference, and a second point corresponding to a preset second relative ratio is identified on the vertical axis of the virtual rectangular area with respect to an upper point, and then the second point is identified. Placing the virtual reference circle on the virtual rectangular area by setting an intersection point where the vertical line passing through the first point and the horizontal line passing through the second point meet as the center point of the virtual reference circle. can

In addition, according to an embodiment of the present invention, in step S670, when two or more gesture determination reference vectors identified as having the maximum similarity among the plurality of gesture determination reference vectors exist, the two or more gestures Any one randomly selected gesture determination reference vector among the determination reference vectors may be determined as the first gesture determination reference vector.

In the above, a method of operating an electronic terminal device according to an embodiment of the present invention has been described with reference to FIG. 6 . Here, since the method of operating the electronic terminal device according to an embodiment of the present invention may correspond to the configuration of the operation of the electronic terminal device 110 described with reference to FIGS. 1 to 5 , a more detailed description thereof will be omitted. decide to do

The method of operating an electronic terminal device according to an embodiment of the present invention may be implemented as a computer program stored in a storage medium for execution through combination with a computer.

In addition, the method of operating an electronic terminal device according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and carry out program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.

As described above, the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

110: electronic terminal device
111: gesture determination criterion vector storage unit
112: gesture matching notification feedback output information storage unit
113: image acquisition unit 114: joint point extraction unit
115: reference circle generator 116: gesture vector generator
117: similarity calculating unit 118: feedback output unit
119: control command execution unit 120: generation unit
121: placement unit

Claims (12)

An electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback, the electronic terminal device comprising:
A plurality of different preset control commands and a plurality of different n (n is a natural number greater than or equal to 2) dimensional gesture determination reference vectors preset to correspond to each of the plurality of control commands - the plurality of gesture determination standards Each of the vectors is a vector having codes of '0' and '1' as components - a gesture determination reference vector storage unit in which this is stored;
The plurality of gesture determination reference vectors and a plurality of different gesture matching notification feedback output information preset to correspond to each of the plurality of gesture determination reference vectors - Each of the plurality of gesture matching notification feedback output information is the means information on feedback outputable through the electronic terminal device - a gesture matching notification feedback output information storage unit that is stored;
an image acquisition unit for acquiring an image including the user's hand by photographing the user's hand through a camera;
a joint point extraction unit for detecting the user's hand region from the image and extracting n joint points from the user's hand region;
a reference circle generator for generating a virtual reference circle for gesture confirmation with respect to the user's hand region;
Checking whether the n joint points are located inside the virtual reference circle assigns a code of '1' to a point located inside the virtual reference circle among the n joint points, and a gesture vector generator for generating an n-dimensional gesture vector having a code assigned to each of the n joint points as a component by assigning a code of '0' to a point located outside the virtual reference circle;
After calculating the degree of similarity between each of the plurality of gesture determination reference vectors and the gesture vector stored in the gesture determination reference vector storage unit, a first determined to have a maximum degree of similarity among the plurality of gesture determination reference vectors a similarity calculating unit that selects a gesture determination reference vector;
When the first gesture determination reference vector is selected, it is checked whether the degree of similarity of the maximum value calculated between the first gesture determination reference vector and the gesture vector exceeds a preset threshold, and the degree of similarity of the maximum value exceeds the threshold. If it is confirmed that, after extracting the first gesture matching notification feedback output information stored in correspondence to the first gesture determination reference vector from the gesture matching notification feedback output information storage unit, the first gesture matching notification feedback output information is extracted according to the first gesture matching notification feedback output information. a feedback output unit for outputting feedback through the electronic terminal device; and
When the feedback according to the first gesture matching notification feedback output information is output, a first control command stored in correspondence to the first gesture determination reference vector from the gesture determination reference vector storage unit corresponds to the shape of the user's hand A control command execution unit that executes the first control command after confirming that the control command is
An electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback, comprising: According to claim 1,
The joint point extraction unit
Allocating an order number corresponding to each of the n joint points based on the location of the n joint points in the user's hand region,
The gesture vector generator
Executing a control command corresponding to the user's hand gesture generating the gesture vector by designating a code assigned to each of the n joint points as a component of a vector one by one according to an order corresponding to each of the n joint points; and An electronic terminal device that performs feedback output. According to claim 1,
The similarity calculator
A Hadamard product is calculated between each of the plurality of gesture determination reference vectors and the gesture vector, and a code value of '1' exists in a component constituting a vector calculated according to the operation of the Hadamard product. An electronic terminal device that executes a control command corresponding to a user's hand gesture for calculating the number as the degree of similarity and outputs a feedback. According to claim 1,
The reference circle generating unit
A virtual rectangular area surrounding the user's hand area is generated, and the virtual rectangular area and a reference rectangular area having a preset shape and size are compared with each other, and the width of the virtual rectangular area with respect to the reference rectangular area is compared with each other. After checking the axis size ratio and the vertical axis size ratio, the horizontal axis size ratio is multiplied by the horizontal axis diameter of the reference circle having a preset shape and size, and the vertical axis size ratio is multiplied by the vertical axis diameter of the reference circle. a generator configured to generate the virtual reference circle by changing the shape and size of the reference circle; and
In the horizontal axis of the virtual rectangular area, a first point corresponding to a first relative ratio preset with respect to the left point is identified, and on the vertical axis of the virtual rectangular area, a second preset point based on the upper point is confirmed. After confirming the second point corresponding to the relative ratio, the point of intersection of the vertical line passing through the first point and the horizontal line passing through the second point is set as the central point of the virtual reference circle, thereby forming the virtual reference circle. an arrangement unit disposed on the virtual rectangular area
An electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback, comprising: According to claim 1,
The similarity calculator
When there are two or more gesture determination reference vectors that are confirmed to have the maximum similarity among the plurality of gesture determination reference vectors, any one randomly selected gesture determination reference vector among the two or more gesture determination reference vectors is selected. An electronic terminal device that executes a control command corresponding to the user's hand gesture determined by the first gesture determination reference vector and outputs a feedback. A method of operating an electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback, the method comprising:
A plurality of different preset control commands and a plurality of different n (n is a natural number greater than or equal to 2) dimensional gesture determination reference vectors preset to correspond to each of the plurality of control commands - the plurality of gesture determination standards Each of the vectors is a vector having codes of '0' and '1' as components - maintaining the stored gesture determination reference vector storage unit;
The plurality of gesture determination reference vectors and a plurality of different gesture matching notification feedback output information preset to correspond to each of the plurality of gesture determination reference vectors - Each of the plurality of gesture matching notification feedback output information is the means information on feedback outputable through the electronic terminal device - maintaining the stored gesture matching notification feedback output information storage;
acquiring an image including the user's hand by photographing the user's hand through a camera;
detecting the user's hand region in the image, and extracting n joint points from the user's hand region;
generating a virtual reference circle for gesture confirmation with respect to the user's hand region;
Checking whether the n joint points are located inside the virtual reference circle assigns a code of '1' to a point located inside the virtual reference circle among the n joint points, and generating an n-dimensional gesture vector having a code assigned to each of the n joint points as a component by assigning a code of '0' to a point located outside the virtual reference circle;
After calculating the degree of similarity between each of the plurality of gesture determination reference vectors and the gesture vector stored in the gesture determination reference vector storage unit, a first determined to have a maximum degree of similarity among the plurality of gesture determination reference vectors selecting a gesture criterion vector;
When the first gesture determination reference vector is selected, it is checked whether the degree of similarity of the maximum value calculated between the first gesture determination reference vector and the gesture vector exceeds a preset threshold, and the degree of similarity of the maximum value exceeds the threshold. If it is confirmed that, after extracting the first gesture matching notification feedback output information stored in correspondence with the first gesture determination reference vector from the gesture matching notification feedback output information storage unit, outputting feedback through the electronic terminal device; and
When the feedback according to the first gesture matching notification feedback output information is output, a first control command stored in correspondence to the first gesture determination reference vector from the gesture determination reference vector storage unit corresponds to the shape of the user's hand executing the first control command after confirming that the control command is
An operating method of an electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback, comprising: 7. The method of claim 6,
The extraction step
Allocating an order number corresponding to each of the n joint points based on the location of the n joint points in the user's hand region,
The step of generating the gesture vector is
Executing a control command corresponding to the user's hand gesture generating the gesture vector by designating a code assigned to each of the n joint points as a component of a vector one by one according to an order corresponding to each of the n joint points; and A method of operating an electronic terminal device for performing feedback output. 7. The method of claim 6,
The selecting step
A Hadamard product is calculated between each of the plurality of gesture determination reference vectors and the gesture vector, and a code value of '1' exists in a component constituting a vector calculated according to the operation of the Hadamard product. A method of operating an electronic terminal device for executing a control command corresponding to a user's hand gesture for calculating the number as the degree of similarity and outputting a feedback. 7. The method of claim 6,
The step of generating the reference circle is
A virtual rectangular area surrounding the user's hand area is generated, and the virtual rectangular area and a reference rectangular area having a preset shape and size are compared with each other, and the width of the virtual rectangular area with respect to the reference rectangular area is compared with each other. After checking the axis size ratio and the vertical axis size ratio, the horizontal axis size ratio is multiplied by the horizontal axis diameter of a reference circle having a preset shape and size, and the vertical axis size ratio is multiplied by the vertical axis diameter of the reference circle. generating the virtual reference circle by changing the shape and size of the reference circle; and
In the horizontal axis of the virtual rectangular area, a first point corresponding to a first relative ratio preset with respect to the left point is identified, and on the vertical axis of the virtual rectangular area, a second preset point based on the upper point is confirmed. After confirming the second point corresponding to the relative ratio, the point of intersection of the vertical line passing through the first point and the horizontal line passing through the second point is set as the central point of the virtual reference circle, thereby forming the virtual reference circle. disposing on the virtual rectangular area
A method of operating an electronic terminal device for executing a control command corresponding to a user's hand gesture and outputting a feedback, comprising: 7. The method of claim 6,
The selecting step
When there are two or more gesture determination reference vectors that are confirmed to have the maximum similarity among the plurality of gesture determination reference vectors, any one randomly selected gesture determination reference vector among the two or more gesture determination reference vectors is selected. A method of operating an electronic terminal device for executing a control command corresponding to the user's hand gesture determined by the first gesture determination reference vector and outputting a feedback. A computer-readable recording medium recording a computer program for executing the method of any one of claims 6 to 10 through combination with a computer. A computer program stored in a storage medium for executing the method of any one of claims 6 to 10 through combination with a computer.

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