KR102510017B1 - Apparatus and method for providing video contents for preventing user from harmful contents and protecting user's eyes - Google Patents

Abstract

According to an embodiment disclosed in this specification, a video content providing method includes selectively providing a video according to conditions separately set for each user by executing a video providing program that selectively provides video contents according to conditions set separately for each user. step; and providing a reward to the first user based on the distance at which the first user, who is a ward, watches a video.

Description

Apparatus and method for providing contents for preventing reproduction of harmful contents and protecting eyesight

Embodiments disclosed herein are directed to a video content providing apparatus and method for minimizing children's exposure to harmful content, preventing children's eyesight damage, and preferentially recommending content necessary for children in a video playback service. it's about

The center of content consumption is shifting from text- or image-oriented content to video content. This phenomenon is especially noticeable in the younger generation. It is being investigated that the young generation, who have been exposed to media frequently since childhood and are familiar with the environment of using smart devices, prefer video content relatively.

Accordingly, the need to properly control children's video exposure is also increasing. Harmful videos with high violent or suggestive nature are sometimes provided to children without being filtered, and there are concerns about deterioration in learning ability or motor ability due to watching videos for a long time, and vision damage may occur due to close viewing.

However, on the other hand, not all videos are harmful, and are also used as useful learning materials or toys.

Therefore, rather than controlling all videos, guardians want to prevent children from being exposed to harmful content, properly control video viewing time or distance from the screen, and select useful content to provide to children.

However, conventional video playback services did not meet the needs of these guardians. As a prior art, Korea Patent Registration No. 10-1548588 'Safe contents use system and method based on content use level' assigns a use level for each content and controls exposure to protected persons accordingly. However, in order to control the content exposed to protected persons based on the rating, it is cumbersome to assign an appropriate rating to all content, and in this way, there is a problem in that it is difficult to select and provide useful content to users.

Therefore, there is a need for a technology capable of solving the above-mentioned problems and meeting the needs of guardians at the same time.

In addition, the age of presbyopia has recently dropped, and users' smartphone viewing is expanding. Therefore, middle-aged people also want to protect their eyesight, and for this purpose, they want to maintain a certain distance to the smartphone screen, but their personal will is not enough. In addition, there is no service that motivates people to maintain a certain distance to the smartphone screen.

On the other hand, the above-mentioned background art is technical information that the inventor possessed for derivation of the present invention or acquired in the process of derivation of the present invention, and cannot necessarily be said to be known art disclosed to the general public prior to filing the present invention. .

Embodiments disclosed in this specification are aimed at providing a video content providing apparatus and method capable of blocking harmful content and providing useful content to a ward in a video playback service.

Embodiments disclosed in this specification are aimed at presenting a video content providing apparatus and method capable of restricting a ward's indiscriminate viewing of a video.

Embodiments disclosed in this specification are aimed at suggesting a video content providing device and method that allows a guardian to selectively provide necessary content to a ward.

Embodiments disclosed in this specification are aimed at presenting a video content providing apparatus and method for preventing damage to the eyesight of a ward.

According to one embodiment as a technical means for achieving the above-described technical problem, in a moving image content providing device, a storage unit for storing a moving image providing program and data for selectively providing moving image content according to separately set conditions for each user; A control unit for selectively providing a video according to a condition separately set for each user by executing the program, wherein the control unit provides a reward to the first user based on the distance at which the first user, a ward, watches the video can do.

According to another embodiment, a video content providing method includes the steps of: selectively providing a video according to a condition separately set for each user by executing a video providing program that selectively provides video content according to a condition separately set for each user; and providing a reward to the first user based on the distance at which the first user, who is a ward, watches a video.

According to another embodiment, a computer readable recording medium in which a program for performing a method of providing video content is recorded is disclosed. The method includes: selectively providing a video according to a condition set separately for each user by executing a video providing program that selectively provides video content according to a condition separately set for each user; and providing a reward to the first user based on the distance at which the first user, who is a ward, watches a video.

According to another embodiment, a computer program stored in a medium is disclosed to perform a video content providing method. The method includes: selectively providing a video according to a condition set separately for each user by executing a video providing program that selectively provides video content according to a condition separately set for each user; and providing a reward to the first user based on the distance at which the first user, who is a ward, watches a video.

According to any one of the above-described problem solving means, it is possible to propose a video content providing apparatus and method capable of blocking harmful content and providing useful content to a ward in a video playback service.

And according to any one of the problem solving means, it is possible to propose a video content providing device and method capable of restricting indiscriminate viewing of videos by wards.

Furthermore, according to any one of the problem solving means, it is possible to propose a video content providing apparatus and method that allows a guardian to selectively provide necessary content to a ward.

Furthermore, according to any one of the problem solving means, it is possible to present a video content providing apparatus and method for preventing damage to the eyesight of a ward. Through this, it is possible to provide a healthcare service that prevents damage to the eyesight of the ward.

Effects obtainable from the disclosed embodiments are not limited to those mentioned above, and other effects not mentioned are clear to those skilled in the art from the description below to which the disclosed embodiments belong. will be understandable.

1 is a block diagram showing the configuration of a video content device from video according to an exemplary embodiment.
2 is an exemplary diagram for explaining a video content providing method according to an exemplary embodiment.
3 is an exemplary diagram for explaining a video content providing method according to an exemplary embodiment.
4 is a flowchart illustrating a method of providing content according to an exemplary embodiment.
5 is a flowchart illustrating a method of deriving an age based on a recognized face of a person.

Hereinafter, various embodiments will be described in detail with reference to the accompanying drawings. Embodiments described below may be modified and implemented in various different forms. In order to more clearly describe the characteristics of the embodiments, detailed descriptions of matters widely known to those skilled in the art to which the following embodiments belong are omitted. And, in the drawings, parts irrelevant to the description of the embodiments are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a component is said to be “connected” to another component, this includes not only the case of being “directly connected” but also the case of being “connected with another component intervening therebetween”. In addition, when a certain component "includes" a certain component, this means that other components may be further included without excluding other components unless otherwise specified.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

The video content providing device 100 may be implemented as an electronic terminal in which an application such as a video playback program or web browser is installed, or may be implemented as a server or server-client system. When the video content providing device 100 is implemented as a server-client system, it may include an electronic terminal in which a client for interaction with a user is installed.

At this time, the electronic terminal may be implemented as a computer, a portable terminal, a television, a wearable device, or the like that may include an interface capable of interacting with a user. Here, the computer includes, for example, a laptop, desktop, or laptop equipped with a web browser, and the portable terminal is, for example, a wireless communication device that ensures portability and mobility. , PCS(Personal Communication System), PDC(Personal Digital Cellular), PHS(Personal Handyphone System), PDA(Personal Digital Assistant), GSM(Global System for Mobile communications), IMT(International Mobile Telecommunication)-2000, CDMA(Code Division Multiple Access)-2000, W-CDMA (WCode Division Multiple Access), Wibro (Wireless Broadband Internet), Smart Phone, Mobile WiMAX (Mobile Worldwide Interoperability for Microwave Access), etc. )-based wireless communication device. In addition, television may include IPTV (Internet Protocol Television), Internet TV (Internet Television), terrestrial TV, cable TV, and the like. Furthermore, a wearable device is a type of information processing device that can be worn directly on the human body, such as, for example, a watch, glasses, accessories, clothes, shoes, etc. can be connected with

At this time, the electronic terminal may include a camera for capturing an image toward the front of the display of the electronic terminal, or a proximity sensor for detecting a distance to a front object. Through this, the electronic terminal can calculate an approximate distance between the user and the electronic terminal.

In addition, the server may be implemented as a computer capable of communicating with an electronic terminal having an application for interaction with a user or a web browser installed thereon and a network, or may be implemented as a cloud computing server. In addition, the server may include a storage device capable of storing data or may store data through a third server.

1 is a block diagram showing the configuration of a video content providing apparatus 100 according to an embodiment. An apparatus 100 for providing video content according to an embodiment may include an input/output unit 110, a communication unit 120, a storage unit 130, and a control unit 140.

The input/output unit 110 may include an input unit for receiving an input from a user and an output unit for displaying information such as a job performance result or a state of the video content providing apparatus 100 .

The input/output unit 110 may receive a search command or play command for a video from a user, output a search result based on the received command, or reproduce and display the video.

Meanwhile, the communication unit 120 may perform wired/wireless communication with other devices or networks. To this end, the communication unit 120 may include a communication module supporting at least one of various wired/wireless communication methods. For example, the communication module may be implemented in the form of a chipset.

The wireless communication supported by the communication unit 120 may be, for example, Wireless Fidelity (Wi-Fi), Wi-Fi Direct, Bluetooth, Ultra Wide Band (UWB), or Near Field Communication (NFC). In addition, wired communication supported by the communication unit 120 may be, for example, USB or High Definition Multimedia Interface (HDMI).

The storage unit 130 may install and store various types of data such as files, applications, and programs. The control unit 140, which will be described later, may access and use data stored in the storage unit 130, or may store new data in the storage unit 130. Also, the controller 140 may execute a program installed in the storage unit 130 . A video providing program that selectively provides video content according to conditions separately set for each user may be installed in the storage unit 130 .

In addition, the storage unit 130 may store a plurality of video contents that may be provided to users and meta information about each video content, for example, a video title, producer, description, related keywords, and the like.

In addition, the storage unit 130 may store information on video restriction conditions separately set for each user. In this case, the video limiting condition information may include setting values for limiting the number of videos that the user can play during a certain period of time or limiting the video playback time or capacity. In addition, video restriction condition information may include keywords (hereinafter referred to as 'banned words') related to videos that are excluded from search results provided to users or that users cannot view even if they are searched for. At this time, the video restriction condition information can be set by each user or the user's guardian, and in particular, the banned words are compared with the title, creator, description, keywords, etc. of the video included in the meta information of each video, and the banned words are added to the meta information. The included video may be excluded from the search results for the user, or playback may be restricted so that the user cannot watch it even if it is not excluded from the search results.

Also, video recommendation condition information may be stored in the storage 130 . In this case, the video recommendation condition information may be set as tags including keywords selected by the user or the user's guardian, as information on conditions to which videos that are preferentially recommended to the user or that the user can watch belong to. This is a condition that restricts the exposure of only the videos that include the tags set accordingly in the meta information to the corresponding user. Alternatively, another video may be automatically played when playback of the corresponding video ends after the user watches the video.

Meanwhile, the above-described video content and meta information of each video content are not necessarily stored in the video content providing device 100 but may be stored in a separate device. In this case, the separate device may be a device providing a third party service operated by an operating entity different from the entity operating the video content providing device 100 .

Accordingly, the above-described video content providing apparatus 100 may filter video content provided by a third party service between a server of another operating entity providing video content through the third party service and the user so that the video content is provided to the user. there is.

Meanwhile, the control unit 140 controls the overall operation of the video content providing device 100 and may include a processor such as a CPU. The controller 140 may control other components included in the video content providing apparatus 100 to perform an operation corresponding to a user input received through the input/output unit 110 .

For example, the controller 140 may execute a program stored in the storage unit 130, read a file stored in the storage unit 130, or store a new file in the storage unit 130.

A specific operation of the control unit 140 will be further described below.

Hereinafter, a video content providing method performed step by step by the control unit 140 of the video content providing device 100 will be described in more detail with reference to the drawings.

As shown in FIG. 1 , the controller 140 may receive video recommendation conditions set by the user or the user's guardian and store them in the storage 130 as video recommendation condition information.

At this time, if the user's guardian sets video recommendation conditions, the user's guardian may set the video recommendation conditions through the user's electronic terminal, or after the guardian authenticates the user's guardian through his or her electronic terminal, the guardian's Video recommendation conditions may be set through the electronic terminal.

For example, when the guardian executes an application for providing video contents installed in the user's electronic terminal and selects a video recommendation condition setting menu, the controller 140 may request authentication of whether the guardian corresponds to the guardian. Accordingly, the guardian may set video recommendation conditions through, for example, an adult certification process. In addition, in order to change the set conditions, guardian authentication may be performed again.

Meanwhile, for example, when a guardian wants to set video recommendation conditions for a user corresponding to a ward using the guardian's electronic terminal, the controller 140 specifies the ward's electronic terminal or the ward's user account in the guardian's electronic terminal. After that, it is possible to set video recommendation conditions through parental authentication. In addition, the controller 140 may apply the set video recommendation conditions to the electronic terminal specified by the guardian or to the user account of the ward.

In this case, in order to set video recommendation conditions, the control unit 140 may register a tag composed of keywords from the guardian. At this time, the keywords set as tags may be directly input from the guardian, or may be registered as tags by receiving some of the keywords selected by the control unit 140 preferentially based on the personal information of the guardian from the guardian.

In addition, the controller 140 may list and display registered tags so that the guardian manages the tags. Accordingly, the guardian may register additional keywords as tags or delete unnecessary keywords among keywords already registered as tags.

In this way, when a tag is registered for a ward, the controller 140 may associate the registered tag with the ward's user account and store it in the storage unit 130 as video recommendation condition information. In addition, the controller 140 may provide a user corresponding to the ward with a recommendation list including videos including tags included in video recommendation condition information in meta information or similar tags in meta information.

Alternatively, the control unit 140 provides only videos that include the tags included in the video recommendation condition information in the meta information or similar tags in the meta information to the ward, and other videos are included in the search results or recommendation list. can make it not happen.

Alternatively, when playback of a video for the user ends and another video is automatically played, the controller 140 may automatically play only videos including tags included in video recommendation condition information in meta information.

Through this, the guardian may preferentially provide videos necessary for the ward or prevent other videos from being provided to the ward.

Meanwhile, FIG. 2 is an exemplary view for explaining a video content providing method according to an exemplary embodiment.

As shown in FIG. 2 , the control unit 140 may allow the guardian to set video restriction conditions.

At this time, if the user's guardian sets the video restriction conditions, the user's guardian may set the video restriction conditions through the user's electronic terminal, or after the guardian authenticates the user's guardian through his or her electronic terminal, the guardian's Video restriction conditions may be set through the electronic terminal.

For example, when the guardian executes an application for providing video content installed in the user's electronic terminal and selects a video restriction condition setting menu, the controller 140 may request authentication of whether the guardian corresponds to the guardian. Accordingly, the guardian may set video restriction conditions through, for example, an adult authentication process. In addition, in order to change the set conditions, guardian authentication may be performed again.

On the other hand, for example, when the guardian uses the guardian's electronic terminal to set restrictions on the video of the user corresponding to the ward, the controller 140 specifies the ward's electronic terminal or the ward's user account in the guardian's electronic terminal. After that, you can set video restriction conditions through parental authentication. Accordingly, the control unit 140 may apply video restriction conditions to the specified electronic terminal or the user account of the ward.

At this time, in order to set video restriction conditions, the control unit 140 may register a prohibited word composed of keywords from the guardian. At this time, the keywords set as banned words may be directly input from the guardian, or may be registered as banned words by receiving some of the keywords selected by the control unit 140 preferentially based on the personal information of the guardian from the guardian.

In addition, the controller 140 may list and display registered banned words so that the guardian manages the banned words. Accordingly, the guardian may register additional keywords as banned words or delete unnecessary keywords among keywords already registered as banned words.

When a forbidden word is registered for a ward, the control unit 140 may associate the registered forbidden word with the ward's user account and store it in the storage unit 130 as video restriction condition information. In addition, the controller 140 may block videos including banned words included in video restriction condition information in meta information or similar prohibited words in meta information from being exposed to protected persons.

Furthermore, the controller 140 may perform filtering again using a banned word for videos that have already undergone a filtering process according to a specific condition according to an embodiment, and provide only the remaining videos to the user.

For example, the controller 140 may preferentially block videos classified as adult or violent, and may additionally block videos including prohibited words, for example, a specific game name in meta information. In addition, the banned word may include a specific producer's name or account name, and in this case, the controller 140 may prevent videos registered with the corresponding producer or account name from being exposed.

In this case, the controller 140 may prevent a video including the banned word in the meta information from being included in the recommendation list or the search list, and even if included, prevent the thumbnail of the corresponding video from being displayed or played. At this time, in order to prevent thumbnails from being displayed, the controller 140 may, for example, overlap a separate layer on top of the thumbnails.

Meanwhile, FIG. 3 is an exemplary diagram for explaining a video content providing method according to an exemplary embodiment.

As shown in FIG. 3 , the control unit 140 may set the number of videos that a ward can watch during a certain period of time as a condition for limiting videos. Accordingly, the guardian can select the number of videos and limit the number of videos that the ward can watch within a selected range.

However, the number of videos is an example, and video limiting conditions may be set in such a way as to limit video viewing time or video capacity.

In addition, the control unit 140 may store in the storage unit 130 the video restriction condition information set, such as a forbidden word or the number of videos, in association with the ward's account.

Accordingly, the controller 140 determines videos to be included in a recommendation list or a search list of videos to be provided to the user by referring to the prohibited words and tags. Among the videos, videos including the keyword corresponding to the tag may be preferentially arranged in the recommendation list or the search list, except for videos including prohibited words in meta information.

In addition, the controller 140 may count the number of videos used by the user for a predetermined period and prevent the number from exceeding the number included in the video limitation condition. That is, when the number of videos watched by the user during a certain period of time reaches the maximum viewable number set in the video limit condition, the controller 140 plays the video without responding to the user's request for playing the video until the corresponding period elapses. can block

Furthermore, the control unit 140 may provide a list of tags set as video recommendation conditions to the user, who is a ward, and allow the user to select one tag from among them, so that videos corresponding to the tag selected by the user are immediately searched. can

On the other hand, if the controller 140 determines that the distance between the electronic terminal and the user is close while the user is watching the video as the video is played, an alarm may be displayed or playback of the video content may be stopped.

To this end, the controller 140 photographs the front through the front camera provided in the electronic terminal, recognizes a person's face in the photographed image, and determines that the user is approaching when the size of the recognized face area is larger than a preset size. You can output an alarm or stop playing video content.

Accordingly, if the user corresponds to a ward, the video viewing time and distance may be limited, and playable video content may also be limited according to conditions.

In this regard, the controller 140 may stop providing video content when it is determined that the user does not look at the output screen of the electronic terminal by tracking the recognized eye. In addition, the controller 140 identifies and tracks the recognized eye, and when it is determined that the user is viewing the output screen of the electronic terminal, the provided video content can be reproduced.

Also, the controller 140 may provide a reward to a user who is a ward based on a distance at which the user watches a video. For example, the viewing distance of the video may be a distance from the display of the electronic terminal to the user's eyes, or a distance from the display of the electronic terminal to the tip of the nose.

At this time, the reward is provided to induce the user to watch while maintaining a certain distance or more. 'Reward' means rewarding a user for use in a specific shopping mall or a specific site. Rewards may be provided to users in various forms, such as points, recharges, or reserves. In addition, rewards should be understood as a concept that includes all means for obtaining various economic benefits, such as points, coupons, reserves, discount benefits, badges, game items, cryptocurrency, and digital assets. In addition, the reward may be a point used by an operating entity providing video content. For example, the reward may be a currency used by YouTube, which is the operating entity.

Also, the controller 140 may provide a reward to the user based on at least one of video viewing time and distance. In this case, if a guardian and a ward exist and the guardian watches a video, a reward can be provided to the user who is a ward, and a reward can be provided to the user when the user watches the video regardless of the guardian and the ward.

For example, the controller 140 may provide a reward to the user when a distance of a certain distance or more is maintained for a certain period of time or longer to protect the user's eyesight. At this time, there may be various methods of setting a certain distance to protect the eyesight of the user who is a ward.

Also, for example, the controller 140 may calculate and grant a reward by applying different weights according to viewing time or provide an additional reward. For example, the controller 140 may provide 1 point for viewing for 1 hour, 2 points for viewing for 2 hours, and 3 points for viewing for 3 hours.

Alternatively, the controller 140 may provide a reward to the user in proportion to the viewing time of users watching from a distance greater than or equal to a certain distance.

Alternatively, the controller 140 may provide a reward if the user changes the distance according to the suggested distance when the suggested distance is presented to the user watching from a distance greater than or equal to a certain distance. For example, when a suggestion is made to a user who was watching from a distance of about 20 cm to step back by 10 cm, if the user follows suit, a reward may be provided to the user.

Alternatively, the controller 140 may provide a reward to the user when watching a video matching a preset keyword at a distance greater than or equal to a certain distance. Alternatively, the controller 140 may provide a reward to the user in proportion to the viewing time of the user when watching a video matching a preset keyword at a distance greater than or equal to a certain distance. At this time, for example, the preset keyword is related to an educational video, and may be English study, English fairy tale, and the like.

Alternatively, the controller 140 may deduct a reward provided to the user when watching a video including a banned word in meta information at a distance greater than or equal to a certain distance. Through this, it is possible to motivate not to watch videos that include banned words in meta information primarily, as well as prevent videos containing banned words in meta information from being included in recommendation lists or search lists. . For example, the controller 140 may deduct a reward provided to the user when watching videos classified as adult or violent.

In this regard, the controller 140 may provide a questionnaire to the user who is not a ward and set a distance for protecting the eyesight of the user who is a ward based on the user's response to the questionnaire.

For example, the questionnaire may include information about age, visual acuity, average viewing time, etc., and the controller 140 assigns scores according to responses to each questionnaire, and protects the eyesight of the user based on the summed scores. distance can be set. For example, if the score is higher than or equal to a predetermined distance, the preset distance may be set, and if the score is lower than the predetermined score, the distance for eye protection may be set to be larger than the preset distance.

In addition, the controller 140 may perform a normal eye test on the user, who is a ward, and set a distance for protecting the eyesight of the user, who is a ward, based on the result of the eye test.

For example, in relation to a method for performing an eye test, the controller 140 may guide the test to be performed at a distance of 1.5 m. Thereafter, the controller 140 may display the text and figures of the corresponding time table in order of time table, and may display time intervals from time table 0.1 to time 2.0. The control unit may determine a target corresponding to a character or figure that is determined to be identified by the user through voice input or text input, with the current visual acuity.

Or, for example, in relation to a method of performing an eye test, the controller 140 primarily displays a text or figure and reduces the size of the text or figure, and the user responds according to a voice or text input from the user. It is determined whether the corresponding character or figure can be identified, and a visual acuity corresponding to the identified size may be determined as the user's current visual acuity.

In relation to this, FIG. 4 is a flowchart illustrating a method of providing content according to an exemplary embodiment.

Referring to FIG. 4 , in step S410, the controller 140 captures a user's face looking at the display of the electronic terminal in order to view video content through a front camera provided in the electronic terminal. Then, in step S420, the controller 140 recognizes a person's face in the captured image. Then, in step S430, the controller 140 estimates the age of the recognized person based on the face. Thereafter, in step S440, the controller 140 may set a distance for protecting the eyesight of the user according to the estimated age.

In this case, big data deep learning may be used to derive an age based on a recognized person's face.

5 is a flowchart illustrating a method of deriving an age based on a recognized face of a person.

Referring to FIG. 5 , in step S510, the control unit 140 may perform face area detection and eye area detection using the Adaboost algorithm, and each of the eyes uses the Adaboost algorithm to determine the center point of each of the eyes. The center coordinates of can be determined. In this case, the controller 140 may terminate age estimation for the corresponding face image when the detection of the face region or the eye region is not successful. That is, the controller 140 determines whether or not a face exists in the input face image, and attempts to detect the presence of a face, but when detection of the face region fails, the age estimation of the corresponding face image may be terminated. In addition, the controller 140 detects an eye area in the detected face area, but when the detected eye area is covered by hair shadows or the image quality of the input face image is low, a detection error occurs and the accuracy of age estimation is deteriorated. Therefore, age estimation for the corresponding face image can be terminated.

Then, in step S520, the controller 140 corrects the rotated face image due to the natural face posture of the person. This is because age estimation results may not be good if the faces are not aligned. The controller 140 may correct the rotation of the face image so that a line segment connecting the centers of both eyes becomes horizontal. At this time, the controller 140 calculates an angle formed by a line segment connecting the centers of both eyes and a horizontal line, and corrects the rotation of the face image by rotating the face image by the calculated angle so that the line segment connecting the centers of the eyes becomes horizontal. can In relation to this, the controller 140 measures the inclination of a straight line connecting the centers of the detected eyes and performs in-plane rotation correction by an angle of Equation 1 below.

는 오른 눈의 위치 좌표,

는 왼 눈의 좌표를 나타낸다.here,

is the positional coordinates of the right eye,

represents the coordinates of the left eye.

Then, in step S530, the controller 140 re-detects the face region from the rotation-corrected face image. At this time, the controller 140 re-detects the face region by redefining the face region in the face image so that background elements unnecessary for age estimation are minimized.

Then, in step S540, the controller 140 partitions the detected face area into a plurality of blocks and extracts image pixel values for each block as histogram characteristics. The controller 140 divides the redefined face region into sub-blocks and extracts characteristics for each block by using a commonly used local binary pattern (LBP). The control unit 140 generates one histogram characteristic by combining as many histogram characteristics as the number of sub blocks in this way.

Subsequently, in step S550, the control unit 140 fuses a plurality of single-level LBP characteristics with different numbers of divisions of sub-blocks, and the texture characteristics of the entire region by a multi-level local binary pattern (MLBP). generate

After that, in step S560, the controller 140 extracts texture characteristics of a partial region such as wrinkles of the facial region through Gabor filtering. The controller 140 defines several wrinkle areas based on the eye position in order to extract wrinkle characteristics of the partial area, and extracts a high-frequency component by convolving the defined wrinkle areas with Gabor filtering. Then, the controller 140 uses the average and standard deviation of the filtered image as the extracted wrinkle characteristics. At this time, step S560 may be performed simultaneously with step S550.

Then, in step S560, the control unit 140 normalizes the characteristics by MPBP and the characteristics by Gabor filtering, and concatenates them to generate final characteristics in which the characteristics of all regions and the characteristics of some regions of the face region are combined. .

After that, in step S570, the control unit 140 reduces the dimension of data by using Principal Component Analysis (PCA) on the combined characteristics. This is because the dimension of the LBP feature not only increases because the face region is divided into several partial regions when generating the LBP feature, but also the dimensions of the final feature increase as the continuous LBP feature dimension is included in the MLBP feature. When the dimension of the data is high, the controller 140 may estimate the age with low accuracy and take a lot of time to process the data.

In step S580 thereafter, the controller 140 estimates the age from the dimensionally reduced characteristics. The controller 140 trains the data to generate training data in which a relationship between the age characteristic and the verified age is formed. The control unit 140 can select a support vector suitable for the type of kernel, its parameters and input values, and the verification age using the generated training data, and store the training data to use when estimating the age for a new input value thereafter. do.

In step S580 thereafter, the controller 140 may set a distance for protecting the eyesight of the user according to the estimated age. For example, the controller 140 may appropriately set a distance for eye protection when the estimated age corresponds to the age of the ward.

Meanwhile, in the video content providing method provided by the above-described video content providing device 100, users can be divided into general users who have no restrictions on viewing and wards whose viewing is partially restricted according to the settings of their guardians, and can be managed. Within one terminal, a warded mode and a general mode may be distinguished. At this time, in order to distinguish between modes, the video content providing device 100 may use a service in a general mode through an authentication procedure. The authentication procedure may be performed as a normal adult authentication procedure, and presents a problem that is difficult for children to solve. It can also be a way to input an answer to it.

On the other hand, the controller 140 photographs the front through the front camera provided in the electronic terminal, recognizes human eyes in the captured image, and controls video content to be provided based on the result of tracking the recognized eyes. can

Further, the video content providing device 100 may primarily block videos classified as adult by sexuality or violence in the protected person mode, and may additionally block videos according to set prohibited words. Also, in the protected person mode, based on tags, recommended videos may be preferentially displayed or only videos corresponding to tags may be exposed, and viewing time may be restricted according to settings. Conversely, in normal mode, these restrictions may not be applied.

The video content providing method includes steps processed time-sequentially in the video content providing apparatus 100 . Therefore, even if the contents are omitted below, the contents described above regarding the apparatus 100 for providing video contents can also be applied to the video contents providing method according to the embodiment.

In addition, the terms "...unit" and "...module" described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software.

The term '~unit' used in the above embodiments means software or a hardware component such as a field programmable gate array (FPGA) or ASIC, and '~unit' performs certain roles. However, '~ part' is not limited to software or hardware. '~bu' may be configured to be in an addressable storage medium and may be configured to reproduce one or more processors. Therefore, as an example, '~unit' refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, and procedures. , subroutines, segments of program patent code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables.

Functions provided within components and '~units' may be combined into smaller numbers of components and '~units' or separated from additional components and '~units'.

In addition, components and '~units' may be implemented to play one or more CPUs in a device or a secure multimedia card.

The video content providing method according to the embodiments described with reference to FIGS. 2 to 5 may also be implemented in the form of a computer-readable medium storing instructions and data executable by a computer. In this case, instructions and data may be stored in the form of program codes, and when executed by a processor, a predetermined program module may be generated to perform a predetermined operation. Also, computer-readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. Also, a computer-readable medium may be a computer recording medium, which is a volatile and non-volatile memory implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules, or other data. It can include both volatile, removable and non-removable media. For example, the computer recording medium may be a magnetic storage medium such as HDD and SSD, an optical recording medium such as CD, DVD, and Blu-ray disc, or a memory included in a server accessible through a network.

Also, the method for providing video content according to the embodiments described with reference to FIGS. 2 to 5 may be implemented as a computer program (or computer program product) including instructions executable by a computer. A computer program includes programmable machine instructions processed by a processor and may be implemented in a high-level programming language, object-oriented programming language, assembly language, or machine language. . Also, the computer program may be recorded on a tangible computer-readable recording medium (eg, a memory, a hard disk, a magnetic/optical medium, or a solid-state drive (SSD)).

Therefore, the video content providing method according to the embodiments described with reference to FIGS. 2 to 5 can be implemented by executing the above-described computer program by a computing device. A computing device may include at least some of a processor, a memory, a storage device, a high-speed interface connected to the memory and a high-speed expansion port, and a low-speed interface connected to a low-speed bus and a storage device. Each of these components are connected to each other using various buses and may be mounted on a common motherboard or mounted in any other suitable manner.

Here, the processor may process commands within the computing device, for example, to display graphic information for providing a GUI (Graphic User Interface) on an external input/output device, such as a display connected to a high-speed interface. Examples include instructions stored in memory or storage devices. As another example, multiple processors and/or multiple buses may be used along with multiple memories and memory types as appropriate. Also, the processor may be implemented as a chipset comprising chips including a plurality of independent analog and/or digital processors.

Memory also stores information within the computing device. In one example, the memory may consist of a volatile memory unit or a collection thereof. As another example, the memory may be composed of a non-volatile memory unit or a collection thereof. Memory may also be another form of computer readable medium, such as, for example, a magnetic or optical disk.

Also, the storage device may provide a large amount of storage space to the computing device. A storage device may be a computer-readable medium or a component that includes such a medium, and may include, for example, devices in a storage area network (SAN) or other components, such as a floppy disk device, a hard disk device, an optical disk device, or a tape device, flash memory, or other semiconductor memory device or device array of the like.

The above-described embodiments are for illustrative purposes, and those skilled in the art to which the above-described embodiments belong can easily transform into other specific forms without changing the technical spirit or essential features of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope to be protected through this specification is indicated by the following claims rather than the detailed description above, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof. .

100: video content providing device
110: input/output unit 120: communication unit
130: storage unit 140: control unit

Claims (14)

In the video content providing device,
A video providing program that selectively provides video content according to video restriction conditions including set values for the number of videos that can be played for each user for a certain period of time and prohibited words related to videos that cannot be viewed, and a storage unit for storing data;
And a control unit for selectively providing a video according to the video restriction condition for each user by executing the program,
The control unit,
A questionnaire containing at least one of the age, visual acuity, and average viewing time of the first user, who is a ward, is provided to the second user who is not a ward, and based on the second user's response to the questionnaire, a questionnaire is provided to the first user. Set a distance to protect eyesight,
Providing a reward to the first user when the first user watches a video selectively provided according to the video limiting condition while maintaining a predetermined distance for eye protection for a predetermined time or longer;
The control unit,
Device that does not primarily provide a video containing the banned word but does not provide it by displaying a separate layer over the thumbnail of the video, and deducts the reward when secondarily watching a video containing the banned word. delete delete delete According to claim 1,
The content providing device includes an electronic terminal,
The control unit,
The front is photographed through the front camera provided in the electronic terminal, the eye area and the face area are detected in the captured image, and the rotation of the face image is corrected so that the line connecting the centers of both eyes becomes horizontal, and the face area is then corrected. A device for re-detecting a face region of a person, estimating an age based on the recognized face of the person, and setting a distance for protecting the user's eyesight according to the estimated age. delete In the method of providing video contents, by executing a video providing program that selectively provides video contents according to video restriction conditions including set values for the number of videos that can be played for a certain period of time for each user and prohibited words related to videos that cannot be viewed. selectively providing a video according to the video restriction condition; and
Providing a reward to the first user based on the distance at which the first user, who is a ward, watches a video;
The step of providing the reward is,
A questionnaire containing at least one of the first user's age, visual acuity, and average viewing time is provided to a second user who is not a ward, and based on the second user's response to the questionnaire, a questionnaire is provided to the first user. Setting a distance for eye protection; and
Providing a reward to the first user when the first user watches a video selectively provided according to the video restriction condition while maintaining the distance for protecting the eyesight for a predetermined time or more;
The video content providing method,
The reward is deducted when the video containing the banned word is not primarily provided, but not provided by overlapping a separate layer on the thumbnail of the video, and secondarily the video containing the banned word is viewed. Method. delete delete delete According to claim 7,
The step of providing the reward is,
Taking a picture of the front through a front camera provided in the electronic terminal;
Detecting a face region and an eye region of a person in a photographed image;
correcting rotation of the face image so that a line connecting the centers of the detected eyes is horizontal;
recognizing a face region of a person by re-detecting the face region from the rotation-corrected face image;
estimating an age based on the face of the recognized person; and
The method further comprises setting a distance for protecting the eyesight of the user according to the estimated age. delete A computer-readable recording medium storing a program for causing a computer to execute the method according to claim 7. A computer program executed by a video content providing device and stored in a medium to perform the method according to claim 7.

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