KR102475243B1 - Sports education system with video background editing function - Google Patents

Abstract

According to the present invention, a sports education system with a video background editing function comprises: a video input module receiving a video including the body of a host; an area detection module detecting a background area and a body area of the host in the video; and a background synthesis module including a background database storing a plurality of backgrounds for synthesis, a background synthesis part synthesizing one among the backgrounds for synthesis in the background area, and a video output part outputting a video with the synthesized background. According to the present invention, the sports education system with a video background editing function can freely synthesize backgrounds in a video for providing sports education to film a video and edit only the background without limitations on space to provide sports education videos without limitations on place for the socially weak including the old and weak and students including children and teenagers.

Description

Sports education system with video background editing function {Sports education system with video background editing function}

The present invention relates to a sports education system having a background editing function of video, and more specifically, to provide sports education combining various backgrounds to students including children and teenagers, the elderly, and the socially underprivileged regardless of place and time. It is about a sports education system that makes it possible.

In order to train martial arts such as kendo, taekwondo, judo, and hapkido, or sports for life such as tennis, bowling, swimming, and golf, it is common to apply for classes directly at educational institutions such as dojangs or academies that professionally teach them. .

However, in this method, not only are there not many professional paint shops around, but there is a lot of time wastage due to the time to go back and forth to take classes, and the cost of taking classes is not small, so it is economically difficult. In addition, as a busy modern person, it is difficult to attend a school or academy without omission to fit the training time, and on the other hand, it is not easy to choose an event that suits one's hobbies.

In order to solve these problems, Internet distance education was introduced to various sports education including life sports and martial arts. In line with the popularization of Internet use, the education industry is also overcoming the limitations of space through distance education through the Internet.

As a prior art for this, Korea Patent Publication No. 10-2022-0039861 discloses 'Physical education development for the disabled and education management system and its method'.

The above invention relates to an online-based education system, in particular, to a special physical education system for the disabled, and more specifically, to select and provide only physical education contents suitable for the user's physical ability level accessed from the system, thereby improving usability and educational effect. It is possible to increase diversity and interest of users by breaking away from typical educational contents that are difficult to arouse user interest, and to provide educational contents used for physical education with video educational data contents that can be used for video learning, User convenience by classifying and processing lecture material contents that can be used in class and self-learning material contents that can be used for users' self-directed learning so that users can easily select and receive the physical education contents they want. It relates to an education management system and method that can further increase the educational effect through learning by user level by increasing the educational effect and accurately verifying and providing the user's learning ability level.

However, in the case of such remote sports education, training video recording is performed only in a specific place or center, and in order to provide videos filmed in various places, the facilitator has to move the location.

Therefore, in order to solve the above-mentioned problems, it is necessary to develop a sports education system that can provide sports education combining various backgrounds to the socially disadvantaged such as students and the elderly, including children and adolescents, regardless of place and time. The need is emerging.

Korean Patent Publication No. 10-2022-0039861

The main object of the present invention is to solve the space limitation when providing sports education videos.

Another object of the present invention is to increase the body recognition rate for separating the body and the background in an image.

Another object of the present invention is to provide a material composition capable of maximizing body region recognition efficiency.

In order to achieve the above object, a sports education system having a background editing function of an image according to the present invention includes an image input module for receiving an image including a host's body; an area detection module for detecting a body area and a background area of the presenter in the image, respectively; A background database storing a plurality of backgrounds for synthesis; and and a background composition module including a background composition unit for synthesizing any one of the backgrounds for synthesis in the background area, and an image output unit for outputting an image synthesized with the background.

Furthermore, the system, illumination for irradiating a light source having a wavelength of 750 to 1560nm to the presenter; and a sensing device worn by the moderator and having a sensing area coated with a coating agent containing a light source reflective pigment that reflects the light source, wherein the area detection module detects the moderator via the sensing area. It is characterized in that it includes a body detector for recognizing and detecting the host's body region in the image, and a background detector for detecting an area excluding the host's body region in the image as a background region.

In addition, the coating agent is characterized in that it further comprises a reflectivity enhancer containing hawthorn extract (Crataegus Pinnatifida).

According to the sports education system having the background editing function of the image of the present invention,

1) In the video providing sports education, the background can be freely synthesized so that the video can be filmed without space restrictions and only the background edited so that the sports education video without space restrictions can be used by students and the elderly, including children and teenagers. can be provided to the socially underprivileged of

2) The presenter can be recognized as shining by the coating agent coated on the sensing area provided in the sensing equipment worn by the presenter, increasing the body region recognition rate in the image,

3) The reflectivity enhancer containing the hawthorn extract is mixed with the light-reflection pigment and applied to the sensing device, thereby maximizing the light-reflection performance of the sensing area, thereby increasing the recognition efficiency of the body area.

1 is a conceptual diagram showing a schematic configuration of the system of the present invention.
2 is a block diagram showing the overall configuration of the system of the present invention.
3 is a conceptual diagram illustrating an example of partitioning a body area and a background area;
4 is a conceptual diagram illustrating an example of an image in which a background is synthesized;
5 is a conceptual diagram illustrating an example of a sensing device;
6 is a flow chart showing steps for manufacturing a reflectivity enhancer.
Figure 7 is a flow chart showing the steps of preparing a coating property enhancer.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each drawing indicate like elements.

1 is a conceptual diagram showing a schematic configuration of the system of the present invention.

Referring to FIG. 1 , the sports education system of the present invention includes a presenter 20 , a camera, a main server 10 , a lighting 40 and a sensing device 30 .

The presenter (20) is a person who appears in the video and provides sports education, and is a sports center operator, a sports information providing YouTuber, an announcer, a host, or a professional emcee who conducts sports events, kindergarten/elementary school/middle school/high school teachers, etc. can be a presenter.

A camera may be provided to take an image of the presenter 20, and a lighting 40 is installed at the location where the presenter 20 is located as well as the camera to adjust the brightness of the captured image and provide a clearer image is of course

Therefore, an image including the host's body may be input by a camera that shoots the host and provided to the main server 10 to be described later, and furthermore, the background of such an image may be changed in the main server 10 to be described later. .

At this time, in order to change the background, it is necessary to be able to recognize only the body region 50 of the host 20 within the image. can

In the case of the sensing device 30, which will be described later, a light source having a specific wavelength is reflected so that the recognition rate of the body region 50 of the presenter 20 can be increased by the reflection of the corresponding light source. In this case, the light 40 applied to the presenter 20 for wavelength recognition through the sensing equipment 30 may be specified as having a wavelength in a specific region.

The main server 10 is a subject that generates a synthesized image by synthesizing a background with an image through the system of the present invention, and the body region 50 of the host 20 and the background region 60 excluding the body region 50 are excluded from the image. ) and provides a function of generating a synthesized image obtained by combining any one of the backgrounds stored in the database with the background area 60.

The main server 10 is a series of subjects for implementing the system of the present invention, and includes a server PC and a network communication network. In addition, the main server 10 has a central processing unit (CPU) and a hardware-based memory and storage means such as a hard disk, and a program that can be executed in the central processing unit, that is, software is installed and can run this software. A series of detailed configurations of the software will be described later as units such as 'modules', 'parts', and 'parts'.

Configurations such as 'modules' or 'units' or 'interfaces' or 'parts' are components of hardware such as software or FPGA or ASIC that is installed and stored in the storage means of the main server and executed via CPU and memory means At this time, the configuration of 'module' or 'unit' or 'interface' is not limited to hardware, and may be configured to be in an addressable storage medium or configured to reproduce one or more processors. As an example, 'module' or 'part' or 'interface' refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, and attributes. fields, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables.

Functions provided by these 'modules' or 'units' or 'interfaces' may be combined into a smaller number of components and 'units' or 'modules', or may be combined into additional components and 'units' or 'modules'. can be further separated.

In addition, the main server 10 means all types of hardware devices including at least one processor, and may be understood as encompassing software configurations operating in the corresponding hardware devices according to embodiments. For example, a computing device as an example of a server may be understood as including all of smart phones, tablet PCs, desktops, laptops, and user clients and applications running on each device, but is not limited thereto.

Hereinafter, a detailed configuration of a sports education system having a background editing function of an image of the present invention based on this configuration will be described with drawings.

2 is a block diagram showing the overall configuration of the system of the present invention, FIG. 3 is a conceptual diagram showing an example of partitioning a body region and a background region, and FIG. 4 is a conceptual diagram showing an example of an image in which a background is synthesized.

Referring to FIGS. 2 to 4 , the sports education system having a background editing function of an image of the present invention includes an image input module 100, a region detection module 200, and a background synthesis module 300. to be characterized

The image input module 100 performs a function of receiving an image including the body of the presenter 20 as an input. In this case, the video may be a video of a sports day or an educational video that teaches exercise or stretching, and is an image of a body of a host conducting sports education, a sports day, or an event.

At this time, the body includes part or the entire body of the presenter 20, and there is no limit to the number of input images, and images stored through the image input module may be stored in a separate database, or images captured through the camera. It is also possible to receive and input in real time.

Here, since there is no limitation on the shooting location where the video is taken, studio shooting, outdoor shooting, set shooting, etc. can be performed, or it is also possible to take a video at the place where the host is currently located and input it without having a separate set.

In addition, since there may be one presenter 20 or there may be a plurality of presenters 20, no restrictions are placed on the number, age, gender, etc. of the presenters 20.

The region detection module 200 performs a function of detecting the body region 50 and the background region 60 of the presenter 20 from the input image, respectively. In the above description, since the video includes the body of the host 20, the representative object of the video becomes the host 20. That is, only the body region 50 of the host 20 who can sit, stand, or move is detected from the image of the host 20, and the background region 60 excluding the body region 50 is separately detected. It is also possible.

At this time, if the entire body of the presenter 20 is photographed in the video, the entire body becomes the body area 50, and if a part of the body is photographed, the body part becomes the body area 50. In other words, the body region 50 refers to the whole or part of the body of the host 20 .

In this case, in order to detect the body area 50 and the background area 60, the outline of the person (host 20) captured in the image is detected, and the area within the closed curve formed by the outline is detected as the body area 50. and an area not detected as the body area 50 may be detected as a background area. Since this can be done by applying a conventional method for detecting a person in an image, a separate description will be omitted.

More preferably, the area detection module 200 may include a body detection unit 210 and a background detection unit 220. At this time, the body detection unit 210 has a function of detecting the body region 50 of the presenter 20 in the image. , and the background detection unit 220 performs a function of detecting an area excluding the body area 50 of the presenter 20 as the background area 60 in the image.

As an embodiment, for easier detection of the body region 50, images of the shape, size, and shape of a person, including the shape or shape of a general person and various poses that a person can take, are stored in a database and then stored in a database. It is also possible to detect the body region 50 within the corresponding frame by comparing and processing the frame of the corresponding image and video.

Accordingly, when the body region 50 of the presenter 20 is detected in the image, the region excluding the body region 50 is detected as the background region 60, and through this, it is possible to separate the person and the background in the image. At this time, detecting the body region 50 and the background region 60 in the image may be preferably performed for each frame constituting the image.

The background composition module 300 performs a function of synthesizing a separate background for synthesis in the background area 60 and outputting an image synthesized with the background. It includes an image output unit 330.

The background database 310 means that a plurality of backgrounds for synthesis including images or photos taken in any one of indoor and outdoor places are stored. In this case, the background for synthesis is an image or video as described above, and includes a video or photo taken at a specific outdoor location or indoor location. At this time, in the case of outdoor, it may be photographed by time such as day, night, afternoon, evening, and morning, or photographed by weather is also possible. Therefore, videos and images taken of various indoor or outdoor spaces can be stored as backgrounds for synthesis and used for background synthesis to be described later.

The background synthesis unit 320 performs a function of synthesizing one of the backgrounds for synthesis with the detected background area 60 . Through this, any one of the backgrounds for synthesis stored in the background database 310 can be synthesized in the background area 60 except for the body area 50, and preferably, the background for synthesis selected from the host 20 or the system administrator. This synthesis can be processed.

The image output unit 330 performs a function of outputting an image synthesized with a background. At this time, the image may be output in a live streaming method through a separate Internet site or application, or may be provided in a broadcasting format, or may be provided in the form of a background synthesis. It is also possible that the video is output to a PC or smartphone possessed by the requested presenter 20 .

Therefore, according to the sports education system having the background editing function of the video of the present invention, the background can be freely synthesized in the video providing various sports education, so that the video can be filmed without space limitations and only the background edited. There is an effect of providing sports education videos without restrictions of location.

In addition, the above-described background synthesizing module 300 may further include an image editing unit 340 to give visual effects to images.

The image editing unit 340 performs a function of applying a video editing technique to an image in which a background is synthesized to give a visual effect. At this time, the visual effect digitizes an image signal and processes it, and the screen is enlarged/reduced/rotated and It can be screen brightness/contrast/saturation/color adjustment, section repetition, fade in/fade out, etc. These visual effects can be applied to one image or multiple effects at the same time. have.

Furthermore, when a visual effect is applied to the image, the image output unit 330 outputs the image to which the visual effect is applied, thereby increasing the sense of immersion in the image and allowing viewers who are provided with the sports education video to have a higher degree of concentration in the image. Of course, it can be shown.

Furthermore, in the above description, it is said that the lighting 40 and the sensing equipment 30 may be further provided separately in the space where the image including the body of the presenter 20 is taken. At this time, the wavelength band of the lighting 40 is preferably used. It goes without saying that the detection equipment 30 can more easily detect the body region 50 of the presenter 20 within the image.

Preferably, the lighting 40 irradiates (radiates) a light source having a wavelength of 750 to 1560 nm to the host 20, and such lighting 40 provides a light source of the corresponding wavelength range to simply increase the brightness of the shooting place. Furthermore, it can be used to increase the accuracy of detecting the body region 50 in conjunction with a configuration to be described later. In this case, of course, the lighting 40 may be integrally configured with the camera.

At this time, the light source provided from the lighting 40 represents a wavelength of 750 to 1560 nm, which represents the near-infrared region, so that no change in color or brightness occurs in the image due to the light source during image capture, but the sensing device 30 and It can be interlocked and used when detecting the body region 50 .

5 is a conceptual diagram illustrating an example of a sensing device.

Referring to FIG. 5, the sensing device 30 is wearable by the presenter 20, and includes a sensing area 31 coated with a coating agent containing a light source reflective pigment that reflects a light source. do.

This sensing device 30 is made of a material such as a cloth having a certain area or a form of clothing that can be worn by a host, such as a vest, hood, cape, T-shirt, pants, or skirt, and is worn by the host 20 or It means wearable. That is, the sensing device 30 may have the same shape as conventional clothing, but preferably, a sensing area 31 is formed on at least one side to reflect wavelengths of 750 to 1560 nm through the sensing area 31. to be characterized

At this time, the sensing area 31 senses a light source having a wavelength of the above-mentioned wavelength range, that is, 750 to 1560 nm, and therefore, a coating agent containing a light source reflective pigment is applied to the sensing device 30 so that the sensing area 31 It is formed, and the sensing area 31 may be a part or the whole of the sensing device 30, and it is based on not limiting its area.

Therefore, preferably, the sensing area 31 is formed on a part or the whole of the sensing device 30, which may be in the shape of clothing, to reflect a region of the corresponding wavelength range. It is characterized in that a coating agent containing a light source reflective pigment that reflects a light source in a wavelength range of 750 to 1560 nm is applied to the sensing area 31 for reflection.

Here, since radiant energy having a wavelength of 700 nm to 1 mm is included in infrared rays, the light source reflecting pigment of the present invention that reflects a light source in a wavelength range of 750 to 1560 nm preferably reflects near infrared rays.

Examples of such light source reflecting pigments may include titanium dioxide, titanium dioxide coated mica flakes, iron titanium brown spinel, chrome oxide green, iron oxide red, chrome titanate yellow, nickel titanate yellow, blue and violet.

Some specific non-limiting examples are nickel antimony titanium, nickel niobium titanium, chromium antimony titanium, chromium niobium, chromium tungsten titanium, chromium iron nickel, chromium iron oxide, chromium oxide, chromium titanate, manganese antimony titanium, manganese ferrite , chrome green-black, cobalt titanate, chromite or phosphate, cobalt magnesium and aluminite, iron oxide, iron cobalt ferrite, iron titanium, zinc ferrite, zinc iron chromite, copper chromite, as well as combinations thereof do.

More particularly, non-limiting examples of commercially available light source reflecting pigments include RTZ Orange 10C341 (rutile tin zinc), Orange 30C342, NTP Yellow 10C151 (niobium tin pyrochlore), Azo Yellow, Yellow 10C112, Yellow 10C242, Yellow 10C272, Yellow 193 (Chrome Antimony Titanium), Yellow 30C119, Yellow 30C152, Yellow 30C236, Arctic Black 10C909 (Chrome Green-Black), Black 30C933, Black 30C941, Black 30C940, Black 30C965, Black 411 (Chrome Iron Oxide), Black 430, Black 20C920, Black 444, Black 10C909A, Black 411A, Brown 30C888, Brown 20C819, Brown 157, Brown 10C873, Brown 12 (Zinc Iron Chromite), Brown 8 (Iron Titanium Brown Spinel), Violet 11 , Violet 92, Blue 30C588, Blue 30C591, Blue 30C527, Blue 385, Blue 424, Blue 211, Green 260, Green 223, Green 187B, Green 410, Green 30C612, Green 30C6054, Green 30C678, and mixtures thereof. can

In this way, when the host 20 is wearing the sensing equipment 30 and proceeds with sports training near the lighting 40 that irradiates the light source, the camera captures an image including the body of the host 20 performing the sports training. is taken and inputted. In this case, the body detection unit 210 detects the body region 50 of the host 20 from the image through the sensing region 31. Recognizable.

When the presenter 20 is photographed in an image while wearing the sensing equipment 30, the wavelength irradiated from the lighting 40 is reflected in the sensing area 31, and therefore, in the captured image, the body area 50 This can further increase the recognition rate.

Furthermore, in order to further increase the recognition rate at this time, the same image is captured using an infrared camera and a general camera by using an infrared camera and a general camera at the same time when capturing an image, and the body of the host 20 in the captured image. area 50 to be sensed.

At this time, in the case of an image captured on an infrared camera, the presenter 20 can be recognized as shining by the coating agent coated on the sensing area 31 provided in the sensing equipment 30 worn by the presenter 20, thereby improving the recognition rate. Based on this, the body region 50 can be more precisely detected even in an image taken by a general camera.

Furthermore, the above-described background detection unit 220 may detect an area other than the body area 50 in the image as the background area 60 as described above.

According to the configuration of the region detection module 200 of the present invention, the sensing equipment worn by the presenter reflects the light source of a specific wavelength range, and based on this, the body region 50 of the presenter 20 is recognized in the image. By doing so, it is possible to detect a more precise body region by maximizing the recognition rate for an area that cannot be accurately recognized, for example, the end part forming an outline, such as the tip of a finger or a toe.

In other words, when the presenter 20 wears the sensing equipment 30 such as gloves or socks on the distal end of the body area 50, the sensing area 31 reflects the light source and shines in the image. Therefore, the recognition rate can be maximized, and based on this, there is an effect of recognizing the body region 50 more precisely.

Furthermore, the coating agent coated on the sensing area 31 may further include a reflectivity enhancer capable of further enhancing an infrared reflective function as well as a light source reflection pigment. In this case, the reflectivity enhancer includes hawthorn extract (Crataegus Pinnatifida) as an active ingredient. It is characterized by doing.

Hawthorn extract is obtained by extracting leaves, branches, flowers, and fruits of hawthorn, a deciduous broad-leaved tree of the Rosaceae family, according to conventional methods. This hawthorn extract means that it is prepared according to a conventional method known in the art, that is, using a conventional solvent under conditions of conventional temperature and pressure.

In the case of the hawthorn extract, it is found to exhibit a reflectance of about 0.03 to 0.05% for light in the infrared wavelength range having a wavelength of 1260 nm, providing an effect of increasing the near-infrared reflection effect.

Therefore, when the reflectivity enhancer is included in the coating agent, the coating agent may preferably include 1 to 20 parts by weight of the light source reflection pigment, 5 to 20 parts by weight of the reflectivity enhancer, and 60 to 90 parts by weight of the solvent.

Here, the solvent is methanol, purified water, methylethylketone, methyl isobutyl ketone, ethyl acetate, β-hydroxydiethyl ether, benzene ), and the type of solvent is not limited.

Therefore, as the reflectivity enhancer containing hawthorn extract is mixed with the light source reflection pigment and applied to the sensing device 30, the sensing area 31 is formed, thereby reflecting near-infrared rays provided through the illumination 40. The body region 50 recognition efficiency may be increased by maximizing the performance.

Furthermore, the reflectivity enhancer may further include additional components in addition to the hawthorn extract. A method for preparing the reflectivity enhancer is described as follows.

6 is a flow chart showing steps for preparing a reflectivity enhancer.

Referring to FIG. 6, the reflectivity enhancer of the present invention may be prepared through preparing a primary material (S11), preparing a secondary material (S12), and completing the reflectivity enhancer (S13). can

(S11) preparing a primary material

First, a primary material is prepared by mixing 10 to 15 parts by weight of cesium tungsten oxide, 40 to 70 parts by weight of hawthorn extract (Crataegus Pinnatifida), and 10 to 30 parts by weight of polyvinylalcohol. .

Cesium tungsten oxide is an insulating coating additive added to the insulating coating of glass or added to ECM mirrors and solid oxide fuel cells. is a substance in

As described above, the hawthorn extract has been found to exhibit a reflectance of about 0.03 to 0.05% for light in the infrared wavelength range having a wavelength of 1260 nm, providing an effect that can increase the near-infrared reflection effect.

Polyvinyl alcohol is a thermoplastic, oil-resistant, adhesive resin that serves as a base for the resin of the coating agent, and has a high level of adhesion so that the coating agent containing the reflectivity enhancer can be strongly attached to the surface of the sensing device 30. do.

(S12) preparing a secondary material

Subsequently, a secondary material is prepared by mixing 85 to 97 parts by weight of the primary material, 1 to 5 parts by weight of organopolysilazane, and 1 to 10 parts by weight of riboflavin.

Organopolysilazane is a silazane polymer in which organic functional groups such as carbon and hydrogen are combined. It has excellent flexibility and can increase the flexibility of the coating film formed when added, and also enhances the water-tightness of the film to increase water resistance. Since it is effective, it performs a function of imparting water resistance to the surface of the sensing device 30 when added to the coating agent.

Riboflavin is a type of water-soluble vitamin known as vitamin B2 and is also called lactoflavin. As a kind of photosensitizer, riboflavin partially absorbs infrared rays when irradiated with visible rays and near-infrared rays and infrared rays in a flash equipped with a filter 10 according to the present invention and is excited, and is converted from an excited state to a stable state and energy Light emission can be achieved by emitting. Therefore, the recognition rate of the body region 50, especially the detection region 31 included in the detection device 30, can be further increased in the photographed image by adding the luminous power to the infrared region.

(S13) Step of completing the reflectivity enhancer

Finally, 90 to 98 parts by weight of the secondary material, 1 to 5 parts by weight of curdlan, and 1 to 5 parts by weight of a coating enhancer including epigallocatechin gallate are mixed to obtain a reflectivity enhancer. complete

Curdlan is a kind of polysaccharide that can be produced by microorganisms, and is used as a thickener and stabilizer to control the viscosity of the reflectivity enhancer and furthermore, the viscosity of the coating agent, and further improves the adhesive strength by assisting the function of polyvinyl alcohol. can do.

The coating property enhancer includes epigallocatechin gallate as a main component, and epigallocatechin gallate is a component of esters mainly contained in catechins such as green tea, and is known to have a strong antioxidant action. Therefore, it provides a function to maintain the reflection quality of the light source by preventing oxidation of the reflectivity enhancer and at the same time preventing surface oxidation of the coating film.

Therefore, according to the reflectivity enhancer of the present invention, materials capable of increasing reflectivity for near-infrared and infrared rays are used as a basic configuration, and as the surface of the sensing device 30 is coated, water resistance can be imparted to the sensing device. Not only does the film not peel off easily, but the film has high oxidation resistance, so it can prevent quality deterioration that can occur over time.

Furthermore, the coating property enhancer may further include an additional composition in addition to epigallocatechin gallate, and a method for preparing such a coating property enhancer is described as follows.

7 is a flow chart showing steps for preparing a coating property enhancer.

Referring to FIG. 7, the coating property enhancer of the present invention is prepared through a step of preparing a first solution (S21), preparing a second solution (S22), and completing a coating property enhancer (S23). can be manufactured.

(S21) preparing a primary solution

First, epigallocatechin gallate (Epigallocatechin Gallate) 5 to 15 parts by weight, polyisobutylene (Polyisobutylene) 10 to 20 parts by weight and polyvinyl alcohol (Polyvinyl alcohol) 20 to 40 parts by weight. A primary solution is prepared by mixing 30 to 60 parts by weight of methylethylketone.

The above-described epigallocatechin gallate prevents oxidation of the reflection enhancing function itself to which the coating property enhancer is added, and at the same time, prevents oxidation of the surface of the sensing area 31, that is, a coating film formed on the surface of the sensing device. It is said that it provides a function to maintain the light source reflection quality through

Polyisobutylene is a synthetic rubber composed of a polymer of 2-methyl-1-propene. It is a colorless or light yellow, tenacious, and elastic rubber-like semi-solid, and is eco-friendly enough to be added to food and harmless to the human body. There is an effect of improving the adhesion of the coating agent on the surface of the sensing device 30.

Polyvinyl alcohol is a colorless powder obtained by hydrolyzing polyvinyl acetate as a thermoplastic polymer compound, and is used as an adhesive and coating agent, and is widely used in cosmetics because it is non-toxic to the human body. It is added as a basic solvent of the primary solution and has a lower level of adhesion than polyisobutylene, so that the viscosity of the coating property enhancer and the reflectivity enhancer can be adjusted to an appropriate level to maintain coating property and to have adhesion.

Methyl ethyl ketone is an organic solvent that controls the concentration of the coating property enhancer and at the same time increases the mixing of various components included in the coating property enhancer. The addition of methyl ethyl ketone increases the effect of forming a uniform film of the coating agent, so that the coating agent forms a more uniform film on the surface of the sensing device.

(S22) preparing a secondary solution

Subsequently, a secondary solution is prepared by mixing 85 to 95 parts by weight of the primary solution, 3 to 5 parts by weight of lecithin, and 1 to 10 parts by weight of aluminum butoxide.

Lecithin is one of the phospholipids containing glycerin and phosphoric acid, and is one of the main components constituting biological membranes. It softens the texture of the mixture and has a surfactant effect, so it has the effect of increasing the miscibility and increasing the viscosity. Therefore, when added to the coating property enhancer, it performs a function of improving the mixing between various materials included in the coating property enhancer and furthermore, the materials included in the reflectivity enhancer.

Aluminum butoxide is a metal alkoxide that assists the function of organopolysilazane included in the above-mentioned reflection enhancing functional agent to increase the water resistance and watertightness of the coating film on the surface of the sensing device 30, that is, the sensing area 31. , and furthermore, durability can be increased so that the coating film is not easily peeled off over time.

(S23) Step of completing the coating property enhancer

Finally, 90 to 98 parts by weight of the secondary solution, 1 to 5 parts by weight of tomatidine, and 1 to 5 parts by weight of dicumyl peroxide are mixed to complete the coating property enhancer.

Tomatidine is a substance corresponding to the aglycone part of tomatine, a Solanum alkaloid, a generic term for alkaloids contained in various plants of the Solanum family. It is a substance known to contain many. It is known to have an antioxidant effect, so it performs a function of preventing the oxidation of the coating agent and the surface oxidation of the coating film as well as the reflectivity enhancer containing the coating property enhancer.

Dicumyl peroxide has the effect of increasing the curing speed of the organopolysilazane in the film containing the organopolysilazane, thereby improving the curing speed of the coating agent containing the organopolysilazane, resulting in a function of increasing the speed of coating film formation. carry out

When such a coating property enhancer of the present invention is added, water resistance is imparted to the surface of the sensing device, and furthermore, the coating film having water resistance is cured more quickly on the surface of the sensing device 30, and at the same time, the adhesion between the coating agent and the sensing device has the effect of increasing

In order to explain the physical properties of the coating agent of the present invention, the evaluation results of Examples and Control Examples will be compared and described. The examples consist of Examples 1 to 3 of the coating agent including the light source reflection pigment and the reflectivity enhancer of the present invention, and the control example is a conventional coating agent.

Example 1 Preparation of Coatability Enhancer for Preparation

1-1. 100 g of a primary solution was prepared by mixing 10 g of epigallocatechin gallate, 15 g of polyisobutylene, 30 g of polyvinyl alcohol, and 45 g of methyl ethyl ketone.

1-2. 91 g of the prepared primary solution, 4 g of lecithin, and 5 g of aluminum butoxide were mixed to prepare a secondary solution of 100 g.

1-3. 94 g of the prepared secondary solution, 3 g of tomatidine, and 3 g of dicumyl peroxide were mixed to complete 100 g of a coating property enhancer.

Accordingly, the composition ratio of the coating property enhancer is as follows.

Table 1 is a table showing the composition ratio of the coating property enhancer. (Unit: % by weight) composition ratio
(weight%) blood
membrane
dog
line
My 2
car
dragon
liquid One
car
dragon
liquid Epigallocatechin Gallate 8.6 polyisobutylene 12.8 polyvinyl alcohol 25.7 methyl ethyl ketone 38.5 lecithin 3.8 aluminum butoxide 4.7 tomatidine 3.0 Dicumyl Peroxide 3.0

Preparation of reflectivity enhancers 1 and 2

[Reflectivity improver 1]

2-1. 100 g of a primary material was prepared by mixing 15 g of cesium tungsten oxide, 60 g of hawthorn extract, and 25 g of polyvinyl alcohol.

2-2. 100 g of the secondary material was prepared by mixing 92 g of the prepared primary material, 3 g of organopolysilazane, and 5 g of riboflavin.

2-3. 94 g of the prepared secondary material, 3 g of curdran, and 3 g of the coating property enhancer according to the composition of Table 1 were mixed to complete 100 g of reflectivity enhancer 1.

[Reflectivity improver 2]

2-1. 100 g of a primary material was prepared by mixing 15 g of cesium tungsten oxide, 60 g of hawthorn extract, and 25 g of polyvinyl alcohol.

2-2. 100 g of the secondary material was prepared by mixing 92 g of the prepared primary material, 3 g of organopolysilazane, and 5 g of riboflavin.

2-3. 94 g of the prepared secondary material, 3 g of curdlan, and 3 g of epigallocatechin gallate were mixed to complete 100 g of reflectivity enhancer 2.

Table 2 is a table showing the composition ratio of reflectivity improvers 1 and 2. (Unit: % by weight) reflective enhancer 1 reflective enhancer 2 half
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My 2
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quality One
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quality Cesium Tungsten Oxide 13.0 13.0 Hawthorn Extract 51.9 51.9 polyvinyl alcohol 21.6 21.6 organopolysilazanes 2.8 2.8 riboflavin 4.7 4.7 curdran 3.0 3.0 Coatability enhancer of Table 1 3.0 - Epigallocatechin Gallate - 3.0

Table 3 is a table showing the composition ratio of the coating agents of Examples 1 to 3 and Control Example. (Unit: % by weight) Example 1 Example 2 Example 3 control example light source reflective pigment 10 10 10 - reflective enhancer 1 10 - - - reflective enhancer 2 - 10 - - Hawthorn Extract - - 10 - Urethane Acrylate Oligomer - - - 20 Solvent (methyl isobutyl ketone) 80 80 80 80

The coating agents of Examples 1 to 3 and the control example were prepared by mixing each component according to the component ratio of Table 3, wherein the coating agent of the control example is a known hard coating composition. Near-infrared reflection experiments and pencil hardness, water droplet contact angle, and accelerated weathering resistance tests were performed for Examples 1 to 3 through near-infrared spectrometer measurement.

[Experimental Example 1] Near-infrared reflection test

Near-infrared rays fall between mid-infrared rays and visible rays, and are in the range of about 800 nm to 2500 nm, and are short-wavelength rays that transmit heat waves only to objects without heating the air as the infrared wavelength closest to the sun's radiant heat among the infrared range.

For the detergents of Examples 1 to 3 and Control Example, near-infrared reflectance was measured using an MPA Near Infrared Spectrometer (Bruker). The sample was dissolved in a liquid solvent without the interference effect of the sample and measured using the Reflection mode.

Table 4 is a table showing the near-infrared reflectance test results. (unit: %) sample name sample concentration reflectivity
(%, 1100nm) reflectivity
(%, 1420 nm) Example 1 10wt% 0.032 0.015 Example 2 10wt% 0.031 0.012 Example 3 10wt% 0.029 0.008 control example 10wt% 0.008 0.001

As can be seen from the results of Table 4, it can be seen that Examples 1 to 3 including the light source reflection pigment and the reflectivity enhancer of the present invention have very excellent near-infrared reflectance compared to the control example.

Furthermore, even in the comparison of Examples 1 to 3, it can be confirmed that the near-infrared reflectance is superior toward the more preferred Example 1.

[Experimental Example 2] Pencil hardness, water droplet contact angle, accelerated weathering test

After spraying the coating composition of Examples 1 to 3 and Control Example on the surface of a structure having a width of 1 meter and a thickness of 1 cm, drying was performed to form a coating layer on the surface, pencil hardness, water droplet contact angle, and accelerated weather resistance were obtained through methods described later. was inspected.

Pencil hardness: Pencil hardness was measured using SHINTO Scientific's HEIDON-14EW device. When measuring the pencil hardness, the pencil was measured using MITSUBISHI's pencil, speed: 60mm/min, scale: 10.0mm, force: 19.6N, load 1kg, and angle between the pencil and the antifouling coating layer: 45°. The pencil hardness was measured repeatedly with a pencil of the same hardness 5 times, and the pencil hardness was the largest value among the pencil hardnesses without visible scratches on the coating layer.

Water droplet contact angle: Using a fully automatic contact angle meter DM700 (manufactured by Kyowa Interface Science Co., Ltd.), 2 µl of pure water was dropped on the antifouling coating layer to measure the contact angle.

Accelerated Weathering Testing Evaluation: The color difference (ΔE) of the antifouling coating layer prepared according to ASTM D-4587 was measured. ΔE was measured by quantifying the degree of discoloration of the coating layer after coating for 2,000 hours.

Table 5 is a table showing the evaluation results. Example 1 Example 2 Example 3 control example pencil hardness 8H 8H 8H 3H water droplet contact angle 4° 5° 5° 11° Accelerated weathering (ΔE) 0.3 0.5 0.6 1.9

Referring to Table 5, the coating agents of Examples 1 to 3 of the present invention not only have excellent antifouling properties and hardness of the prepared coating layer compared to the coating agents of the control examples, but also show superhydrophilicity with a water droplet contact angle of 5 ° or less and excellent weather resistance. You can check.

In addition, even when comparing Examples 1 to 3, it can be confirmed that Example 1 exhibits the best physical properties in terms of water droplet contact angle and accelerated weather resistance.

As described so far, the configuration and operation of the sports education system having a background editing function of an image according to the present invention is expressed in the above description and drawings, but this is only an example and the spirit of the present invention is reflected in the above description and drawings. It is not limited, and various changes and modifications are possible within a range that does not deviate from the technical spirit of the present invention.

10: Main server 20: Moderator
30: detection equipment 31: detection area
40: lighting 50: body area
60: background area 100: image input module
200: area detection module 210: body detection unit
220: background detection unit 300: background synthesis module
310: background database 320: background synthesis unit
330: video output unit 340: video editing unit

Claims (6)

As a sports education system with a background editing function of video,
An image input module that receives an image including the host's body;
Illumination for irradiating a light source having a wavelength of 750 to 1560nm to the presenter;
Sensing equipment worn by the presenter and having a sensing area coated with a coating agent including a light source reflective pigment and a reflectivity enhancer that reflects the light source;
A body detection unit detecting the host's body region and background region in the image, recognizing the host through the sensing region and detecting the host's body region in the image; and the host's body in the image. an area detection module including a background detection unit that detects an area other than the area as a background area;
A background database storing a plurality of backgrounds for synthesis; A background synthesis module including a background composition unit for synthesizing one of the backgrounds for synthesis in the background area and an image output unit for outputting an image synthesized with the background;
The reflectivity enhancer,
Preparing a primary material by mixing 10 to 15 parts by weight of cesium tungsten oxide, 40 to 70 parts by weight of hawthorn extract (Crataegus Pinnatifida), and 10 to 30 parts by weight of polyvinylalcohol;
preparing a secondary material by mixing 85 to 97 parts by weight of the primary material, 1 to 5 parts by weight of organopolysilazane, and 1 to 10 parts by weight of riboflavin;
Mixing 90 to 98 parts by weight of the secondary material, 1 to 5 parts by weight of Curdlan, and 1 to 5 parts by weight of a coating property enhancer to complete a reflectivity enhancer;
The coating property enhancer,
5 to 15 parts by weight of epigallocatechin gallate, 10 to 20 parts by weight of polyisobutylene, and 20 to 40 parts by weight of polyvinyl alcohol. Preparing a primary solution by mixing 30 to 60 parts by weight of methylethylketone;
preparing a secondary solution by mixing 85 to 95 parts by weight of the primary solution, 3 to 5 parts by weight of lecithin, and 1 to 10 parts by weight of aluminum butoxide;
Preparing a coating property enhancer by mixing 90 to 98 parts by weight of the secondary solution, 1 to 5 parts by weight of tomatidine, and 1 to 5 parts by weight of dicumyl peroxide. Characterized in that, the sports education system. According to claim 1,
The background synthesis module,
An image editing unit for applying an image editing technique to the image synthesized with the background to give a visual effect;
The video output unit,
A sports education system, characterized in that for outputting an image to which the visual effect is applied. delete delete delete delete

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