KR20170107731A - dust measuring device in air using photographing digital image, and method of measuring dust for the same, and computer-readable recording medium for the same - Google Patents

dust measuring device in air using photographing digital image, and method of measuring dust for the same, and computer-readable recording medium for the same Download PDF

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KR20170107731A
KR20170107731A KR1020160031427A KR20160031427A KR20170107731A KR 20170107731 A KR20170107731 A KR 20170107731A KR 1020160031427 A KR1020160031427 A KR 1020160031427A KR 20160031427 A KR20160031427 A KR 20160031427A KR 20170107731 A KR20170107731 A KR 20170107731A
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dust
photographing
passage
image
air
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KR1020160031427A
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Korean (ko)
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KR101805907B1 (en
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이창규
김기용
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엔팩토리주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids
    • G01N21/8507—Probe photometers, i.e. with optical measuring part dipped into fluid sample
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/94—Investigating contamination, e.g. dust
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G06T7/0008—Industrial image inspection checking presence/absence
    • G01N2021/17—

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The present invention is a technology for photographing a specific space in a state where bright light is shone on the specific space in the air, and measuring an amount of dust positioned in the specific space. The present invention is a technology for digitizing an amount of dust in the air in the specific space and notifying a user of the amount of dust by analyzing the image that is acquired by photographing the specific space in a state where light is brightly shone on the specific space in the air. In particular, the present invention is a technology of, in terms of photographing a specific space to or from which air enters or exists, maximally preventing light shone on the specific space from being reflected from an adjacent inner wall and entering again the specific space, thus distinctly apply the dust existing in the specific space to the photographed image, and accordingly precisely measuring an amount of dust. Accordingly, the present invention has an advantage of enabling a user to precisely determine a pollution degree of interior air in accordance with the amount of dust in the air by measuring and digitizing the amount of dust in the air.

Description

Technical Field [0001] The present invention relates to an apparatus for measuring dust in the air using a digital image capturing method, a measuring method thereof, and a recording medium therefor,

The present invention relates to a technique for photographing a specific space in a state of illuminating bright light with respect to a specific space in the air and measuring the amount of dust located in the specific space.

More particularly, the present invention relates to a technique of illuminating light in a specific space in the air, analyzing a video image of the specific space, and quantifying the amount of dust in the air in the specific space to inform the user.

Particularly, in taking a specific space in which air enters and exits, the light irradiated to the specific space is reflected to the adjacent inner wall to suppress the entry into the specific space to the maximum, It is a technology that can reflect the captured image clearly and accurately perform the dust measurement accordingly.

Generally, there are many dust particles in the air, but it is difficult to visually confirm it.

However, when a part of the curtain is rolled up indoors on a clear day, when the bright sunlight enters the opening of the curtain, the dust in the air through which the light passes is visually confirmed.

As such, when a very bright sun shines in a dark space and a user in the dark space can see the dust in the bright sunlight, the amount of dust in the room air can be measured numerically, It is possible to easily judge the degree of contamination of the room air and to cope with it easily.

Korean Patent Application No. 10-2000-0023090 "Measurement Method of Atmospheric Dust Using Image Analysis" Korean Patent Application No. 10-2009-0112180 "Digital Camera and Dust Detection Method Using the Same & Korean Patent Application No. 10-2006-0012868 "Dust volume measurement system and measurement method using the same" Korean Patent Application No. 10-2009-0127173 "Dust Flap Measuring Device for Dustbin"

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an airborne dust measuring device and a measuring method thereof using digital image taking capable of measuring the amount of dust in room air regardless of outside sunlight do.

Also, an object of the present invention is to provide an airborne dust measuring apparatus and method for measuring airborne dust using a digital image photographing method in which the amount of dust in air is measured and quantified to enable the user to cope with the indoor air according to the numerical value of the degree of contamination in the air do.

According to an aspect of the present invention, there is provided an apparatus for measuring airborne dust using digital image taking, including: a block body; A photographing passage part formed by a predetermined length incision from one side wall of the block body part toward the other side wall; A dust entrance part for communicating with the photographing passage part from the lower surface of the block body part corresponding to the photographing passage part so as to allow air to flow into the photographing passage part from the outside; And an illumination passage part formed at a predetermined length from the one side wall of the block body part so as to intersect the shooting passage part with respect to the dust entrance part. In the state that the illumination device is installed in the entranceway of the illumination passage part, And the illumination device installed in the entrance path of the illumination passage portion irradiates light across the shooting passage portion corresponding to the upper portion of the dust entrance portion so as to constitute a dark room in which the shooting passage portion is closed in a state in which the imaging device is installed in the entrance path of the shooting passage portion The photographing apparatus is configured to photograph the upper portion of the dust entrance portion.

When the photographing apparatus photographs the upper portion of the dust entrance portion through the photographing passage portion, the photographing apparatus illuminates the illumination passage portion at a position opposed to the illumination passage portion with respect to the dust entrance portion so that the reflected light received by the light irradiated from the entrance portion of the illumination passage portion can be lowered. And the illumination path light absorbing region is formed in a space having a diameter larger than a diameter of the illumination path portion.

When the photographing apparatus photographs the upper portion of the dust entrance portion through the photographing passage portion, the photographing apparatus photographs the dust entrance portion at a position opposed to the photographing passage portion with respect to the dust entrance portion so that the reflected light received by the light irradiated from the entrance portion of the illumination passage portion can be lowered. And the photographing passage light absorbing region portion communicating with the passage portion, wherein the photographing passage light absorbing region portion is preferably a space having a diameter relatively larger than the diameter of the photographing passage portion.

Further, the imaging apparatus may further include a hollow reference partition wall 111 provided in the imaging passage portion adjacent to the dust entry / exit portion so as to measure the size of the image captured by the imaging apparatus.

A method for measuring airborne dust using a digital image capturing method according to the first embodiment of the present invention includes the steps of: (a) acquiring a captured image of a specific space in a state in which light is irradiated to a specific space in and out of the air, ; (b) generating a background image in which a background color is extracted from a captured image of the digital file; (c) XORing the captured image and the background image to generate a composite image; (d) computing the area of the particle from the composite image by comparing the total area on the composite image and digitizing the area.

A method for measuring airborne dust using digital image sensing according to a second embodiment of the present invention includes the steps of (a) measuring a first shot image taken with respect to a specific space in a state in which light is irradiated to a specific space in which air enters and exits Acquiring and storing the digital file as a digital file; (b) acquiring a second shot image taken with respect to a specific space in a state in which light is irradiated to a specific space through which air enters and exiting, and storing the acquired second shot image as a digital file; (c) XORing the first captured image and the second captured image stored in the digital file to generate a composite image; (d) computing the area of the particle from the composite image by comparing the total area on the composite image and digitizing the area.

In addition, a method for measuring airborne dust using a digital image capturing method according to a third embodiment of the present invention includes the steps of: (a) detecting a specific space in which air enters and exits, Acquiring data; (b) identifying a moving object on the moving picture data; (c) computing the area of the particle relative to the entire area on the frame of the moving image data based on the number of moving objects, and numerically calculating the area.

Meanwhile, a computer-readable recording medium according to the present invention records a program for causing a computer to execute a method for measuring dust in the air using digital image capturing.

According to the present invention, there is an advantage that the degree of contamination of the indoor air can be easily recognized regardless of the outside sunlight by photographing the specific space in a state in which bright light is irradiated to a specific space in which dust enters and exits.

In addition, according to the present invention, the amount of dust in the air is measured and quantified, thereby allowing the user to accurately determine the degree of contamination of the room air according to the amount of dust in the air.

In addition, according to the present invention, since the illumination passage light absorbing area and the photographing passage light absorbing area are provided, the amount of particles mixed in the air can be accurately photographed at the time of photographing the dust entrance part through the lighting device.

FIG. 1 is a perspective view of an airborne dust measuring device according to the present invention as viewed obliquely from above, FIG.
FIG. 2 is another perspective view of an airborne dust measuring device according to the present invention as viewed obliquely from above; FIG.
3 is a side perspective view of an airborne dust measuring device according to the present invention,
4 is a view illustrating an airborne dust measurement method using digital image taking according to a first embodiment of the present invention.
5 is a view illustrating an airborne dust measurement method using a digital image pickup according to a second embodiment of the present invention.
FIG. 6 is a diagram illustrating an airborne dust measurement method using digital image sensing according to a third embodiment of the present invention. FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of an airborne dust measuring apparatus according to the present invention obliquely viewed from above, FIG. 2 is another oblique view of an airborne dust measuring apparatus according to the present invention, 3] is a side perspective view of an airborne dust measuring device according to the present invention.

1 to 3, the present invention is a measurement device for measuring the amount of dust in the room air, regardless of the sunlight of the outside, through the camera, The illumination path portion 130, the illumination path light absorption region 140 and the imaging path light absorption region 150. The light path portion 130 includes the light path portion 100, the imaging path portion 110, the dust inserting portion 120,

The block body portion 100 is preferably formed in a hexahedron and has an illumination passage through which light by the illumination device 10 passes from the outside and a photographing passage for the photographing device 20 from the outside.

The imaging passage portion 110 is formed in a predetermined lengthwise incision from one side wall of the block body portion 100 toward the other side wall. The inner wall of the shooting passage 110 is preferably made of a dark color so as to minimize light reflection.

The dust entrance part 120 communicates with the photographing passage part 110 upward from the lower surface of the block body part 100 corresponding to the photographing passage part 110 so that air is introduced into the photographing passage part 110 from the outside. .

The dust entry / exit part 120 is formed at a position where the shooting path section 110 and the illumination path section 130 cross each other. At this time, the photographing apparatus 20 is installed in the entrance portion of the photographing passage portion 110 so as to photograph the upper portion of the dust entry / exit portion 120. When the photographing apparatus 20 photographs the upper portion of the dust entry / exit portion 120 The adjacent inner wall of the dust entry / exit unit 120 to which the photographing apparatus 20 is directed is maintained in an opened state so that the photographed image by the photographing apparatus 20 can exhibit a good resolution, It is preferable to configure the absorption region section 150.

The illumination passage portion 130 is formed in a predetermined lengthwise incision from one side wall of the block body portion 100 so as to intersect the shooting passage portion 110 with respect to the dust entrance portion 120. At this time, it is preferable that the illumination passage part 130 has a multi-folded structure from the dust entrance part 120 to the dust entrance part 120.

It is preferable that the illumination passage portion 130 constitute a closed darkroom in a state where the illumination device 10 is installed in the entrance of the illumination passage portion 130. [

At this time, it is preferable that the photographing passage section 110 also constitute a closed dark room in a state in which the photographing apparatus 20 is installed on the access road of the photographing passage section 110.

In detail, the imaging passage portion 110 and the inner wall of the illumination passage portion 130 are configured to have a dark-based color that minimizes the reflection of light, The light reflected to the photographing apparatus 20 can be minimized when photographing a specific space.

The illumination device 10 constituting the illumination passage part 130 and the imaging passage part 110 and installed in the access path of the illumination passage part 130 is connected to the imaging passage part 130 corresponding to the upper part of the dust entrance part 120 The photographing device 20 is configured to photograph the upper portion of the dust entry / exit portion 120 in a state in which light is irradiated across the dust entry / exit portion 120.

The illumination passage light absorbing region 140 preferably has a diameter that is relatively larger than the diameter of the illumination passage 130 and the photographing apparatus 20 is disposed in the dust entrance / When the photographing device 20 photographs the upper part of the dust receptacle 120, the photographic apparatus 20 can control the dust receptacle 120 with respect to the dust receptacle 120 so as to minimize the amount of light reflected by the light irradiated from the entrance of the dust- 130 at the position facing the illumination passage portion 130. [

The photographing path light absorbing region 150 preferably has a diameter larger than the diameter of the photographing path portion 110 and the photographing apparatus 20 is disposed in the dust entrance portion 110 through the photographing path portion 110, When the photographing device 20 photographs the upper part of the dust receptacle 120 with respect to the dust entrance part 120 so that the light reflected by the light irradiated from the entrance part of the illumination path part 130 can be minimized, 110 at the position facing the photographing passage portion 110. As shown in Fig.

As the photographing apparatus 20 photographs a specific space in the block body portion 100 corresponding to the upper portion of the dust entry / exit portion 120, it must be precisely confirmed to an area occupied by the dust particles with respect to the region of the specific space, , The resolution of the image captured by the photographing apparatus 20 should be good, among other things.

To this end, it is important that the light irradiated from the illumination passage portion 130 toward the dust entry / exit portion 120 does not form reflected light on the photographing apparatus 20 when the photographing apparatus 20 photographs it.

Specifically, when the photographing apparatus 20 photographs, the light emitted from the illumination passage section 130 toward the dust entry / exit section 120 does not form reflected light on the photographing apparatus 20, 140 and a photographing passage light absorbing region 150. [

That is, light from the entering portion of the illumination passage portion 130 to the dust entry / exit portion 120 moves directly to the illumination passage light absorption region 140 without colliding with the wall, The area where the reflected light can be formed can be minimized.

When the photographing apparatus 20 photographs from the entering portion of the photographing passage portion 110, due to the photographing passage light absorbing region portion 150 in front of the photographing passage portion 110 adjacent to the dust entry / exit portion 120, The light passing across the dust entry / exit part 120 from the illumination passage part 130 can be passed without being reflected.

Also, even when the light of the flash mounted on the photographing apparatus 20 is irradiated toward the dust entry / exit unit 120 due to the shooting path light absorption area unit 150, the light is struck against the wall adjacent to the dust entry / exit unit 120 It is possible to minimize the area where the reflected light can be formed as the photographing passage light absorbing region 150 absorbs light after moving to the photographing passage light absorbing region 150 without the wall.

It is preferable that the imaging device 20 includes a hollow reference barrier rib 111 provided in the imaging passage 110 adjacent to the dust entrance 120 so as to measure the size of the image to be imaged.

FIG. 4 is a view illustrating an airborne dust measurement method using digital image sensing according to a first embodiment of the present invention. FIG.

2, the method for measuring dust in air using digital image sensing according to the first embodiment of the present invention includes the steps of: The photographing apparatus 20 installed at the entrance of the photographing passage section 110 photographs the specific space and obtains the photographing image as shown in FIG.

Then, the acquired photographed image is stored as a digital file, and the particle P concentration of the dust is measured in the photographed image.

In detail, as shown in FIG. 4, a background image is extracted from a captured image stored in a digital file, and a composite image is generated by XORing the captured image and the background image with each other.

As a result, when dust particles P are detected on the composite image as shown in FIG. 4, the area of the particles P relative to the total area on the composite image is calculated according to a predetermined algorithm and numerically calculated. The pollution degree of the present air can be judged on the basis of the particles P thus quantified.

5 is a diagram illustrating an airborne dust measurement method using digital image taking according to a second embodiment of the present invention.

2, the method for measuring airborne dust using a digital image taking method according to the second embodiment of the present invention includes the steps of irradiating light to the dust outlet 120, which is a specific space in which air enters and exits from the illumination passage 130, The photographing apparatus 20 installed at the entrance of the photographing passage section 110 photographs the specific space with a time lag and obtains the first photographing image and the second photographing image as shown in FIG.

Then, a composite image is generated by XORing the first captured image and the second captured image stored in the digital file as shown in FIG.

In detail, when the particles P1 of the dust distributed on the first captured image are finely moved to distribute the particles P2 of the dust on the second position on the second captured image, (Ps) of the particle (Ps).

As a result, when the particles Ps of the dust are detected on the composite image, the area of the particles Ps relative to the total area on the composite image is calculated according to a predetermined algorithm and numerically calculated. Based on the thus quantified particles of dust (Ps), it becomes possible to judge the degree of contamination of the air at present.

FIG. 6 is a diagram illustrating an airborne dust measurement method using digital image sensing according to a third embodiment of the present invention. FIG.

The method for measuring airborne dust using a digital image taking method according to the third embodiment of the present invention is a method for measuring the airborne dust by using light emitted from a light entrance part 120, which is a specific space in which air enters and exits from the illumination passage part 130, The photographing apparatus 20 installed at the entrance of the photographing passage section 110 continuously photographs the specific space for a predetermined time and acquires the moving picture data as shown in FIG.

Then, according to a preset algorithm, the moving object (e.g., particles of dust) on the moving image data is identified for each image sequentially captured relative to the first reference image among the moving image data.

Based on the number of moving objects, the area of the particle relative to the entire area on the frame of the moving image data is calculated according to a predetermined algorithm and numerically calculated. Based on the dust particles thus quantified, it becomes possible to judge the pollution degree of the present air.

The present invention can also be embodied in the form of computer readable code on a computer readable recording medium. At this time, the computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored.

Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage, and the like, and may be implemented in the form of a carrier wave . The computer-readable recording medium can also be stored and executed by a computer-readable code in a distributed manner on a networked computer system. And functional programs, codes, and code segments for implementing the present invention can be easily deduced by programmers skilled in the art to which the present invention belongs.

10: Lighting device
20: photographing apparatus
100:
110:
111: Reference bulkhead
120: dust outlet
130:
140: light passage light absorption area part
150: shooting path light absorbing area part

Claims (8)

A block body part (100);
A photographing passage part 110 formed in a predetermined lengthwise incision from one side wall of the block body part toward the other side wall;
A dust outlet 120 communicating with the photographing passage in an upward direction from a lower surface of the block body corresponding to the photographing passage to allow air to flow into the photographing passage from the outside;
An illumination passage part 130 formed at a predetermined length from the one side wall of the block body part so as to intersect the photographing passage part with reference to the dust entrance part;
And,
The illuminating passage is configured to form a closed darkroom in a state where the illuminating device is installed in the entrance of the illuminating passage, and the photographing passage is closed with the photographing device installed in the entranceway of the photographing passage,
Wherein the photographing apparatus is configured to photograph the upper portion of the dust entrance portion in a state in which the illuminating device installed in the entrance of the illuminating passage portion irradiates light across the photographing passage portion corresponding to the upper portion of the dust entrance portion. Airborne dust measurement system using image capture.
The method according to claim 1,
When the photographing apparatus photographs the upper portion of the dust entrance portion through the photographing passage portion, the photographing apparatus is provided with the dust outlet portion in the illumination passage portion with reference to the dust entrance portion so as to lower the reflected light received by the light irradiated from the entrance portion of the illumination passage portion An illumination passage light absorbing area part (140) communicating with the illumination passage part at an opposed position;
Further comprising:
Wherein the illumination path light absorption area part (140) comprises a space having a diameter relatively larger than a diameter of the illumination path part.
The method of claim 2,
When the photographing apparatus photographs the upper portion of the dust entrance portion through the photographing passage portion, the photographing apparatus is provided with the dust outlet portion in the photographing passage portion with reference to the dust entrance portion so as to lower the reflected light received by the light irradiated from the entrance portion of the illumination passage portion A shooting path light absorbing region 150 communicating with the shooting path portion at an opposed position;
Further comprising:
Wherein the photographing path light absorbing region (150) is formed of a space having a diameter relatively larger than a diameter of the photographing passage portion.
The method of claim 3,
A hollow reference barrier rib (111) provided in the photographing passage portion adjacent to the dust entrance portion so as to measure the size of an image to be photographed by the photographing device;
Wherein the dust detection unit detects the dust in the air.
(a) acquiring a photographed image photographed with respect to the specific space in a state in which light is irradiated to a specific space through which air enters and exiting, and storing the photographed image as a digital file;
(b) generating a background image in which a background color is extracted from a captured image of the digital file;
(c) XORing the captured image and the background image to generate a composite image;
(d) calculating an area of the particle from the composite image by calculating an area of the particle relative to the total area of the composite image;
And measuring the amount of dust in the air.
(a) acquiring a first shot image of a specific space taken in and out of the specific space in a state in which light is irradiated, and storing the acquired first shot image as a digital file;
(b) acquiring a second shot image taken with respect to the specific space in a state that light is irradiated to a specific space in which air enters and exits, and storing the obtained second shot image as a digital file;
(c) XORing the first captured image and the second captured image stored in the digital file to generate a composite image;
(d) calculating an area of the particle from the composite image by calculating an area of the particle relative to the total area of the composite image;
And measuring the amount of dust in the air.
(a) acquiring motion picture data photographed for a predetermined time with respect to the specific space in a state in which light is irradiated to a specific space in which air enters and exits;
(b) identifying a moving object on the moving picture data;
(c) computing an area of the particle relative to the entire area of the frame of the moving image data based on the number of the moving objects to quantify the area;
And measuring the amount of dust in the air.
A computer-readable recording medium storing a program for causing a computer to execute a method for measuring dust in air using digital image pickup according to any one of claims 5 to 7.
KR1020160031427A 2016-03-16 2016-03-16 dust measuring method in air using photographing digital image KR101805907B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112818886A (en) * 2021-02-09 2021-05-18 广州富港万嘉智能科技有限公司 Flying dust detection method, readable storage medium, flying dust detection machine and intelligent food machine

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Publication number Priority date Publication date Assignee Title
JP3917096B2 (en) 2003-03-25 2007-05-23 シャープ株式会社 Photoelectric dust sensor
JP2013195261A (en) * 2012-03-21 2013-09-30 Sharp Corp Photoelectric powder dust detector and powder dust gas detector
JP6291740B2 (en) * 2013-07-26 2018-03-14 セイコーインスツル株式会社 Dust amount detection device and control method of dust amount detection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112818886A (en) * 2021-02-09 2021-05-18 广州富港万嘉智能科技有限公司 Flying dust detection method, readable storage medium, flying dust detection machine and intelligent food machine

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