JP2012108086A - Red end transmission body, satellite survey/criminal supervisory/identification camera system applying the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop an epoch-making red end transmission body in which observation and photography can be performed, without changing a color of green paint and other colors although chlorophyll may become red for naked eyes or a digital camera, and a satellite survey/supervisory/identification system applying the same.SOLUTION: For a red end transmission material, (1) red end light/infrared rays from about 680 nm are permeated approximately in 90%, (2) a transmission band is provided around 500 nm and (3) transmissivity is adjusted in such a manner that chlorophyll and abnormal reflection objects may be observed/photographed red and normal objects may be observed/photographed approximately normal when they are watched or photographed by a digital camera. By application to digital cameras, a satellite survey/supervisory/identification camera system is implemented in which red end abnormal reflection can be detected by a normal CCD or CMOS imaging device.

Description

Detailed Description of the Invention

  According to the present invention, normal object colors that have no abnormal reflection at the red end are routinely viewed in red only those having an abnormal reflection at the red end, such as chlorophyll, and can be photographed with an ordinary digital camera. (Long wavelength light of 680 nm or more) It is related to satellite exploration and crime prevention monitoring / identification system by transmission body and its application.

Green leaves contain chlorophyll, and the reflection of red-end light (near-infrared) and infrared rays is much stronger than the reflection of green. Therefore, a filter that can detect chlorophyll by transmitting red-end light and short-wavelength blue has been used. In addition, there is an infrared color film having a structure in which a silver salt film develops a red color when it feels red. It usually shifts the RGB spectral sensitivities of color films by 100 nm to the long wavelength side. As a result, blue light is not exposed, it feels green light, feels blue, red light feels green, infrared light feels red. Colored, false color (false color) effect is applied to remote sensing of artificial satellites, green leaves turn red even in satellite image (Land sat), but the urban area is displayed in gray or magenta, everything is displayed in false color .
In relation to the above, there are Japanese Patent No. 4126959 by the same applicant, <Pseudo Infrared Color Image Production Method> filed May 20, 1997, <Japanese Patent Application No. 2007-263786>, and the like.

Problems to be solved by the invention

However, the B light is not copied, the color of GR is replaced, and all the target colors are replaced with false colors. Therefore, in the conventional method, the blue roof is not reflected, the green roof tile is blue, and the red car is green. In remote sensing, urban areas are gray or reddish purple, and black clothes are red as well as green leaves because of strong red-end reflection. But to look for a red car, you have to look for a green car.
This is a major obstacle to the recognition of objects and the monitoring and identification work. In this case, in order to track a red car with a traffic violation, it was necessary to search for a green car and track it.
Further, according to the patents and patent applications filed by the same applicant to date, it has been extremely difficult to adjust a normal object so as to achieve gray balance. Therefore, the conventional method has a problem that it is not easy to search for objects other than chlorophyll.
In addition, even in patents and patent applications filed by the same applicant that were in the previous stage of the present invention, there have been no specific guidelines and standards for toning and color matching of color materials for producing the transparent body. For this reason, in particular, a normal gray object or the like is gray-balanced and is usually visually approximated, and it is extremely difficult to produce a transmissive body to be photographed.
In addition, conventional satellite exploration has required expensive equipment such as a multispectral camera. In addition, in the crime prevention monitoring / identification system, there has been a problem that infrared rays of 800 nm or more pass through clothing and the skin of the body is seen through (clothing see-through).

Means for solving the problem

Therefore, in the present invention, without the conventional special film and expensive multispectral apparatus, in the case of fluoroscopy and usually using a digital camera, those having infrared extraordinary reflection such as green leaves turn red, but there is no extraordinary reflection at the red end. The above problem is solved by developing a method in which ordinary objects are observed and photographed on a daily basis.
Therefore, in order to achieve the above object, the present invention adjusts the transmittance of a red powder light transmitting material such as gelatin, resin, glass or the like by using a color material such as yellow, red, blue, or a multilayer coating. ) In addition to a transmission band that strongly transmits red-end light (and infrared rays) of about 680 nm or more, 2) a blue-green (BG) light transmission band that transmits blue (B) light and green (G) light equally around 500 nm 3) Normally, by adjusting the transmission of each RGB light so that the blue-green (BG) light transmission and the red-end (R) light transmission work approximately equally in the RGB photosensitive area of the eye or digital camera, The color of the object is reproducible on a daily basis with a good gray balance, but a colorless gray standard reflector and red-light transmission are used so that red leaves and other abnormal reflections (transmissions) can be seen through and photographed in red. High density neutral density The color material is mixed with each other in the sunlight, and the mixing ratio of each color material is adjusted while comparing and applied to normal digital photography, satellite exploration, security monitoring and inspection system. To solve the problem.

(Principle background of the present invention)
1) Although the green leaf has a strong red reflection band of about 670 nm or more in addition to the green at the center of visible light, the green leaf looks green because the eye has very weak red-end light sensitivity (more than 680 nm).
2) Therefore, if the wavelength of 680 nm or less is completely cut and red end light is transmitted strongly, the green leaf turns red, but then all is observed red as was the case with conventional infrared filters.
3) The present invention achieves the object by transmitting nearly 90% of red-end light of about 680 nm or more and creating a transmission band in the vicinity of 500 nm. The principle is that the blue-green BG light is transmitted to the eye at the 500 nm position. In addition, in both the G and B sensitive areas of the image sensor, the CIE color matching function exposes the light almost uniformly as shown by 31 in FIG. 6, so that the BG light is transmitted to match the red-end R light. If so, the XYZ amounts calculated as a result are equalized. Therefore, the field of view is dark but normal objects are usually seen, and even with a digital camera similar to the eyes, even if the green is the same, the address sign on the telephone pole remains green, and the green leaves appear red and appear red. The
Note that when the transmission band is shifted to 500 nm or less, the object is biased to red or blue because G light is not transmitted and is not perceived by the eye or the image sensor as in the case of the dichroic filter.

4) Conventional problems with surveillance and identification cameras In the present invention, as described above, in the transmission band around 500, B light and G light corresponding to R light from the red-end transmission band are transmitted in a balanced manner. The normal object usually reproduces the colors of RGB close to RGB, the blue car is blue, and the green car is also recorded approximately and does not have a strange color. Therefore, there is a great effect that an object having no abnormal reflection is not mistaken and tracking is easy. The same effect can be obtained in other surveillance / inspection work, and there is a significant feature that is not possible in the conventional method, which is made possible by using a normal digital camera and video.

  Also, the problem of (clothing fluoroscopy) that occurs with conventional infrared devices is prevented by the use of an infrared absorption filter that cuts infrared light of about 800 nm or more and transmits the infrared light as in many portable cameras. That is, since red-end light of 800 nm or less is visible light, it is not infrared and therefore has no fluoroscopic effect.

  The uniqueness of the present invention resides in that a normal object is routinely seen through and photographed even with the same red powder light transmitting body. In the example shown in Japanese Patent No. 4126959 by the same applicant, the adjustment was not sufficient, and the gray object was seen through in blue, and the digital camera was also displaced in the blue direction. As a result of further experiments, as shown in FIG. In order to increase the transmittance of red light at about 690 nm to about 690 nm and to suppress the transmittance at about 500 nm to about 1%, a gray reflector and a high-density gray without ordinary abnormal transmission under sunlight are used. The above-mentioned object can be achieved by adjusting the mixing ratio of the color materials so that the RGB light is balanced by using the ND) filter together, and an unprecedented good red powder light transmitting body can be easily and reliably manufactured. Although the object of the invention has been achieved for the first time by acquiring data, the amount of BG light transmission is not necessarily limited to 1%. By pressure and by adjusting the transmittance curve thereof by dichroic method, a higher transmittance (brighter) allowing production of red powder permeate.

  In the monitoring / identification system, the above-mentioned red-end transmission filter is built in the camera, so that the same function can be given to the monitoring camera. In that case, the problem can be solved by having a plurality of image sensors, using the filter for at least a part of the image sensors, and numerically obtaining color characteristics from the plurality of sensor image information.

The invention's effect

In fact, the transparent body shown in the embodiment specified in FIG. 1 below is used as a general portable camera lens, and when a standard gray reflector is photographed against a background of green grass by direct sunlight, the green background becomes red. However, it is possible to submit evidence that the gray reflector is photographed in a colorless approximation. It is easy to determine the quality of the good red powder through the reproducible and reliable quality control. Manufacturing becomes possible.

  When this is compared with the old type (the embodiment shown in Japanese Patent No. 4126959), there are differences as shown in FIGS. FIG. 2 shows the short wavelength side, and FIG. 3 shows the long wavelength side. The dotted line is the old type, and the solid line is the state of the embodiment of the present invention. Although the difference is negligible, the dotted line is shifted to the left on the short wavelength side, and shifted to the right on the long wavelength side, so the gray becomes bluish, indicating that gray balance is not achieved, According to the present invention, the defect is corrected, and a near-ideal observation and a result of photographing with a general portable terminal camera can be obtained, which can be shown as evidence.

  In other words, according to the present invention, an ordinary object does not become a false color and does not have a false color on a daily basis, unlike an infrared color film, without using an infrared color film or a multispectral camera. The effect that only certain things turn red can be obtained with eyes or with a digital camera, and even in satellite exploration, it is possible to perform exploration and tracking that could not be done with conventional imaging sensors CCD and CMOS.

  In addition, digital cameras will bring about an unprecedented shocking and mysterious image effect for the first time in history. Therefore, at the same time as the detection of chlorophyll, it brings the surprise and joy of visual and photographing, and is useful not only for mood change and therapy, but also for color education effects that can understand and understand the essence of colors, The effect of revisiting green leaves and plants, and reexamining the ecosystem through vision, can be greatly used for the development of color science and color culture as a natural science teaching material and social science teaching material for raising environmental awareness. become.

FIG. 1 is an actually measured spectral transmittance curve in which the vertical axis represents wavelength nm and the horizontal axis represents transmittance, which is an embodiment of the red powder transmitter according to the present invention. The peak on the wavelength side, 2 indicates the rising position on the long wavelength side. Table 1 shows the spectral transmittance. In the table, 3 is the 460 to 540 nm on the short wavelength side, and 4 is the detailed value of the spectral range between 660 to 780 nm on the long wavelength side.
In that case, if the peak on the short wavelength side is to the left, normal gray objects with no abnormal reflection at the end of red will turn blue, and all objects will turn red or blue. When the is to the right, all objects become red or greenish, so that a so-called dichroic filter is established.

Therefore, in the present invention, a so-called conventional infrared filter that transmits only infrared rays, and not the dichroic filter that has just been described, but a filter that exhibits an extraordinary reflection in addition to normal vision and exhibits a chloro red effect. Developed a judgment and color adjustment method to create
It uses a colorless gray standard reflector and a high-density neutral density filter with little red light transmission, and sees them alternately under sunlight and compares them with a digital camera to adjust them so that they are approximately the same color. By doing so, strict fine adjustment is easily made possible and the object is achieved.
The above is the manufacturing know-how of the present invention, and it would be difficult to easily and reliably manufacture the chlorophyll red powder permeable material according to the present invention without this manufacturing adjustment method.

  As an example, a colorless gray reflector is used as a reference when it is seen and photographed in a normal gray approximation under sunlight, but the 500 nm transmission band and the 690 nm transmission and absorption boundary are shifted to the left and right. It can be several filter sets. As a result, various chlorophyll red effects can be obtained even in the production of goggles and stained glass.

(Vegetation monitoring camera)
In so-called surveillance cameras, the red powdered body of the present invention is brought into the lens system, and the changes in the growth state of edible vegetation (chlorophyll) are scientifically grasped, analyzed, and captured by linking to a computer. It becomes possible to determine the time and the like.

(Satellite exploration)
In the exploration by satellite, as described above, it becomes possible to detect chlorophyll and its distribution rate in a daily state, and the function of exploring green roofs other than green leaves, blue cars, and red cars can be obtained. That is, the conventional big problem of difficulty in recognizing an object is solved. This is equivalent to a revolutionary innovation in which the exploration function can be expanded with a digital camera.

  Further, in that case, it is possible to make a higher level of recognition and identification possible by putting the red-end transmissive body in and out of the light flux for a certain period of time so that the normal image and the red-end recorded image can be compared.

(Mobile phone, terminal)
As already mentioned, application to mobile devices will sprout art heart, enjoy infrared imaging, ease stress, and easily detect chlorophyll, observe ecosystem, judge greening rate, display color Therefore, it will be possible to verify the types of plants and how much they wither, and this will greatly contribute to the global ecosystem conservation movement.

(Counterfeit discovery device)
In the case of digital applications such as mobile phones, if inspection materials are installed against a light source surface using infrared light, such as a tungsten light bulb,
Further, a difference in transmission around 500 nm can be detected, and the simplest and cheapest counterfeit detection device such as banknotes and securities can be produced, which can be used for crime prevention. In this case as well, automatic comparison and verification can be performed by a computer.

(For aviation)
In addition, by providing goggles and sun visors for aviation and in-vehicle use, the perspective of the distant view is improved, and vegetation with low lightness is also clearly clarified from the background of the ground, rocks, hills, steel towers, bridges, water surface, sea, etc. This makes it possible to see the image separately, making it easier to see, and safer aviation, navigation and driving.
In any case, the dark green color of normal plants is close to the receding color depending on the type. It can be used for safety aviation, accident prevention, and lowering the accident rate because it becomes a bright red advance color. The sun visor is also useful for driving fatigue and change of mood.
(Expression, healing, change of mind, therapy)
In addition, ordinary fluoroscopy and shooting give people unprecedented surprise and joy, enabling new color expressions as filters, goggles and sun visors are indispensable for modern people and relieve stress, The establishment of a therapy room can be used for a healthy life.

(education)
As a color teaching material, in particular, just asking why a normal object is normally observed and photographed and only the green leaves turn red is also valuable as a new color teaching material. Color and color education, device color reproduction It is also useful for color education, color culture, science development, and science nations, such as understanding and disseminating the CIE color system.

  The amount of reflection at the 500 nm position and the red end position shown in FIG. 2 is large and slightly different depending on the object. Therefore, as a scientific research analysis method of new physical properties, for example, classification of plant types, camouflage Even in the fields of discovery, appraisal of antique works, and inspection of evidence, it will be possible to greatly contribute to analysis that has not been possible before.

In addition, this can be applied to a normal digital camera and video camera, and a subject can be photographed with one of the two imaging elements being transmitted through the red powder transmissive body and not through the other, and the results can be compared. Both of them are simultaneously called on the monitor to observe the same image portion of both, and numerically detect and display color characteristics (RGB level value, L ^* a ^* b ^* value, etc.) of an arbitrary image portion. By making it possible to verify and identify physical properties while referring to various types of data obtained in advance, it is possible to obtain more accurate monitoring effects and insights such as securities and banknotes that cannot be obtained with conventional surveillance cameras or inspectors. However, it is possible to manufacture a more accurate insight using a normal image element at a much lower cost by using the red powder, abnormal reflection around 500 nm, and determination of the intensity of transmitted light.

FIG. 4 is an explanatory diagram of the basic form of the satellite exploration, monitoring, and identification camera system. In this case, the red-end transmission filter 11 is mounted after the camera lens, and the photographing light passes through the red-end transmission filter at the 11 position and is displayed as a captured image 14 on the monitor screen of the display 13 to achieve the above-described purpose. Unprecedented exploration, tracking, monitoring and identification are possible.
FIG. 5 is an explanatory diagram of a basic form of a satellite exploration, monitoring, and identification camera system having a plurality of lenses and an image sensor. A normal photographed image 25 that does not use the red-end transmission filter and an image 22 that passes through the red-end transmission filter 19 are juxtaposed on the screen of the display 21. Here, compared with the normal image on the left, the object with abnormal reflection, its position, and the normal color of the object can be easily confirmed. The color characteristics of an arbitrary object in the screen are displayed on the data display unit 26 by clicking the position of the spot colorimetry unit 24 linked with the mouse 23, and can be collated with various data so that monitoring and identification with much higher accuracy than in FIG. It becomes possible.

  Spectral transmittance curve of one example (actual measurement)   An enlarged comparison diagram near the transmission band on the short wavelength side (dotted line is the old type)   Expansion comparison diagram near the long wavelength side transmission band (dotted line is the old type)   Explanatory drawing of basic form of satellite exploration, surveillance, and insight camera system   Explanatory drawing of the basic form of the camera system with two image sensors   CIE color matching function

DESCRIPTION OF SYMBOLS 1 Transmission band position of short wavelength side of one embodiment 2 Transmission band position of long wavelength side of one embodiment 3 Spectral transmittance numerical value (measured value) between 460 and 540 nm in the vicinity of the short wavelength side transmission band
4 Spectral transmittance value between 660 and 780 nm near the long wavelength side transmission band (actual measurement)
5 Short-wavelength side transmission band 6 Old-type transmission band 7 Long-wavelength-side transmission band 8 Old-type transmission band 9 Camera body 10 Lens 11 Red-end transmission filter 12 Image sensor 13 Display 14 Captured image section 15 Camera body 16 Image sensor 17 Lens 18 Lens 19 Red-end transmission filter 20 Image sensor 21 Display 22 Photographed image 23 Mouse 24 Pot colorimetric unit 25 linked with mouse 25 Photographed image 26 Data display unit
30 Red-end photosensitive area 31 Overlapping part of zλ and yλ (B and G light are felt equally)

[Table 1] Partial details of the spectral transmittance values in FIG. 1 (actual measurement)
(Published table in document name drawing)

Claims (2)

  When adjusting the transmittance of gelatin, resin, glass, and other red powders by using yellow, red, blue, or other color materials, or multilayer coatings. 1) Strongly emits red powder (and infrared rays) of about 680 nm or more. In addition to the transmission band to be transmitted, 2) a blue-green (BG) light transmission band that transmits blue (B) light and green (G) light equally in the vicinity of 500 nm is provided, and 3) the blue-green (BG) light transmission. By adjusting the transmission of each RGB light so that the red and red (R) light transmission acts approximately evenly in the RGB photosensitive area of the eye or digital camera, the normal object is reproduced almost daily with a good gray balance. However, a satellite exploration characterized by the fact that a red-leaf transparent body, which has abnormal reflection (transmission) at the red end, including green leaves, is seen through and photographed in red, and that the transmission body is built into the camera. Surveillance camera system.   A satellite exploration / surveillance / inspection camera system comprising a plurality of sensors, wherein the filter of claim 1 is used at least in part, and color characteristics are numerically obtained from the plurality of sensor image information.