WO2014069412A1 - Article anti-détection faciale - Google Patents

Article anti-détection faciale Download PDF

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Publication number
WO2014069412A1
WO2014069412A1 PCT/JP2013/079158 JP2013079158W WO2014069412A1 WO 2014069412 A1 WO2014069412 A1 WO 2014069412A1 JP 2013079158 W JP2013079158 W JP 2013079158W WO 2014069412 A1 WO2014069412 A1 WO 2014069412A1
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WIPO (PCT)
Prior art keywords
face
brightness
person
infrared
detection
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PCT/JP2013/079158
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English (en)
Japanese (ja)
Inventor
越前　功
合志　清一
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大学共同利用機関法人情報・システム研究機構
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Priority to JP2014544501A priority Critical patent/JP6108562B2/ja
Publication of WO2014069412A1 publication Critical patent/WO2014069412A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G02C7/105—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having inhomogeneously distributed colouring
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/16—Shades; shields; Obturators, e.g. with pinhole, with slot
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories
    • G03B17/565—Optical accessories, e.g. converters for close-up photography, tele-convertors, wide-angle convertors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions
    • G06V40/161—Detection; Localisation; Normalisation
    • G06V40/165—Detection; Localisation; Normalisation using facial parts and geometric relationships

Definitions

  • the present invention relates to a face detection preventing device. More specifically, the present invention relates to a face detection prevention device for preventing privacy infringement due to voyeurism or camera reflection.
  • Non-Patent Documents 1 and 2 As a conventional method, there were a method of preventing the other person's camera from being reflected by physically hiding the face, and a method of preventing a person from being identified by drawing a special pattern on the face and failing the face recognition.
  • the inventors prevent voyeurism by incorporating an infrared light source in a video display device that adds noise to the video captured by a digital camera without affecting human vision. A method was proposed. [See Non-Patent Documents 3 and 4]
  • any of the conventional methods described above has a problem in that it interferes with communication between people in the physical space because it is necessary to change the face by hiding or coloring the face. That is, it is necessary to realize a face detection preventing device that achieves both natural communication and privacy protection.
  • the object of the present invention is to realize a face detection preventing device that achieves both natural communication and privacy protection.
  • the face detection preventing device is attached to a human face and detected by a camera in a detection area 8 (see FIG. 10).
  • the face detection preventer that changes the evaluation of the luminance in the detection area 8 by the face discriminator 11 (see FIG. 3) that detects the human face from the captured image through the luminance evaluation in A member 3A (see FIG. 10) disposed so as to face the specific area and a mounting portion 5A for mounting the member 3A on the face of the person
  • the member 3A has a luminance in the detection area 8 as the specific area.
  • the face detection preventive tool refers to a person's face in order to prevent the face detector (software) from detecting a person's face when an image shot by voyeurism or reflection is leaked on the Internet. The thing to wear is said. Further, “wearing on a person's face” includes not only wearing directly on the face but also indirectly wearing (wearing on a person wearing directly).
  • the detection area is an area where a face is to be detected in the captured image.
  • the evaluation of the luminance of the detection area also includes evaluation based on the two-dimensional distribution of luminance values in the detection area (for example, the difference between the average luminance value of the first area and the average luminance value of the second area).
  • the wearing part is typically a vine part in the case of glasses or goggles, a belt-like part that surrounds the head in the case of a visor type (parts may have cuts), and in the case of a sheet
  • an adhesive part in the case of a plate, it is a hinge or a fitting part.
  • the high brightness member for example, an infrared reflection filter, a member using retroreflective beads or a mirror, or the like can be used.
  • the brightness reducing member for example, an infrared absorption filter, a member using a louver, or the like can be used.
  • an eye part corresponds to the position of the face of the person whose luminance is evaluated as low as the specific area of the face of the person.
  • the position of the face of a person whose brightness is highly evaluated corresponds to, for example, a nose portion or a portion between both eyes.
  • the position facing the specific area of the person's face refers to the part of the member that overlaps the specific area of the person's face when viewed from the front when the face detection preventive tool is worn.
  • the high brightness member or the low brightness member is arranged so as to cover a specific area of the face of the person when viewed from the front, but it is not necessarily arranged so as to cover the whole, It suffices if it is sufficient to mislead the face discriminator (for example, depending on the reflectivity and the performance of the face discriminator, 70% or more may be covered if the reflectivity is sufficiently high).
  • a part covering the eyes “crossing both eyes”, “a part away from the eyes” or an equivalent expression is used for the member. ) "Part covering the part”, “crossing the part facing (or corresponding) to both eyes”, “part away from the part facing (or corresponding) to the eye”, and the like.
  • the brightness evaluation of the face discriminator that detects a person's face is changed without using a light source, thus realizing a face detection prevention device that achieves both natural communication and privacy protection. can do.
  • the member 3 ⁇ / b> A is a high brightness member that transmits green light, infrared light, red light, A reflection member such as an infrared ray that reflects blue light, purple light, or ultraviolet light is provided.
  • infrared rays and ultraviolet rays because they are not perceived by human eyes and are sensitive to the camera.
  • the ratio of human eyes to green light is the largest at about 70%, so there is not much discomfort if green light is transmitted. Therefore, red light, blue light, and violet light may be reflected.
  • red light, blue light, and violet light may be reflected.
  • the wavelength region in which the luminance is changed can be widened, the amount of change can be increased, and the effect of preventing face detection can be increased. It is also possible to use only red light or purple light.
  • Transmitting green light and reflecting infrared rays means that the ratio of the amount of energy reflected to the total amount of any of infrared, red, blue, violet, and ultraviolet rays in incident light is 50% or more.
  • the amount of energy transmitted through the total amount of green light is 50% or more.
  • 60% or more of infrared rays or the like is reflected, and 60% or more of green light is transmitted. More preferably, 80% or more of infrared rays are reflected and 80% or more of green light is transmitted.
  • an effective face can be obtained by using a reflection member such as an infrared ray as a member for changing the evaluation of luminance, so that the wearer does not feel a sense of incongruity and the amount of exposure to the camera is increased. Detection can be prevented.
  • a reflection member such as an infrared ray
  • the face discriminator 11 uses the Haar-like feature value to increase the luminance in the detection region 8. Whether or not there is a face in the detection region 8 based on sequential determination by the plurality of strong discriminators 10a to 10N connected to each other by connecting a plurality of strong discriminators 10a to 10N composed of a plurality of weak discriminators to be evaluated.
  • the infrared ray reflection member is an infrared ray arranged at the position of the human face corresponding to the rectangular feature whose luminance is evaluated to be low by the Haar-like feature amount. It is a reflection filter.
  • the reflection filter such as infrared rays may be made of a material that reflects infrared rays or red light, and may have a characteristic of reflecting infrared rays or red light by applying a paint.
  • the “position of the person's face corresponding to the rectangular feature” refers to an actual person's face corresponding to the portion of the face that overlaps the rectangular feature in the captured image. According to this configuration, since the majority of face detectors use Haar-like features, the majority of captured images can be prevented from voyeurism.
  • the face detection preventive tool according to the fourth aspect of the present invention is the first aspect, as shown in FIG. 41 or 42, for example, the member 3A is a high brightness member, and infrared, red light, blue light, It has a reflection member such as an infrared ray in which minute reflectors that reflect either violet light or ultraviolet light recursively or are reflected at a wide angle are scattered in portions that do not block the line of sight.
  • the member 3A is a high brightness member, and infrared, red light, blue light, It has a reflection member such as an infrared ray in which minute reflectors that reflect either violet light or ultraviolet light recursively or are reflected at a wide angle are scattered in portions that do not block the line of sight.
  • a micro-reflector that recursively reflects (reflects light in the incident direction) for example, a retroreflective bead of several ⁇ m to several mm can be used.
  • a micro-reflector that reflects at a wide angle for example, a mirror ball (hemispherical reflector) of several ⁇ m to several mm can be used.
  • a part that does not block the line of sight means a part that does not block the line of sight in daily activities, and is a part that is not in front of the eyes with a face detection prevention device, that is, in front of the forehead, in front of the cheek, in front of the nose or , A portion on the right oblique front side of the right eye, a portion on the left oblique front side of the left eye, etc. If comprised like this aspect, the detection of a face discriminator can be made erroneous by retroreflection. Furthermore, since the minute reflector is in a portion that does not block the line of sight, the wearer can see the same scenery as before wearing through the face detection prevention tool.
  • the face detection preventing device is the first aspect, as shown in FIG. 18, for example, as shown in FIG. It has an absorbing member such as an infrared ray that absorbs blue light, purple light, or ultraviolet light.
  • infrared rays and ultraviolet rays it is preferable to use infrared rays and ultraviolet rays.
  • red light, blue light, and violet light may be absorbed.
  • the wavelength region in which the luminance is changed can be widened, the amount of change can be increased, and the effect of preventing face detection can be increased.
  • red light or purple light Transmitting green light and absorbing infrared light means that the ratio of the amount of energy absorbed to the total energy amount of any of infrared light, red light, blue light, violet light, and ultraviolet light is 50% or more. The amount of energy transmitted through the total amount of green light is 50% or more.
  • infrared rays or the like is absorbed, and 60% or more of green light is transmitted. More preferably, it absorbs 80% or more of infrared light and transmits 80% or more of green light.
  • effective face detection is achieved by using an infrared absorbing member or the like as a member for changing the evaluation of luminance, thereby reducing the amount of exposure to the camera without causing a sense of incongruity to the person. It can be prevented.
  • the face discriminator 11 uses the Haar-like feature value to increase the luminance in the detection region 8.
  • a plurality of strong classifiers 10a to 10N composed of a plurality of weak classifiers to be evaluated are connected, and whether or not there is a face in the detection region is determined based on sequential determination by the connected plurality of strong classifiers 10a to 10N.
  • the person's face is detected by the determination, and the infrared ray absorbing member is an infrared ray absorbing member arranged at the position of the person's face corresponding to the rectangular feature whose luminance is highly evaluated by the Haar-like feature amount. It is a filter.
  • the infrared filter or the like may be made of a material that absorbs infrared light or red light, or may have a characteristic of absorbing infrared light or red light by applying a paint. According to this configuration, since the majority of face detectors use Haar-like features, the majority of captured images can be prevented from voyeurism.
  • the face detection preventive tool according to the seventh aspect of the present invention is the first aspect, as shown in FIG. 37, for example, as shown in FIG. 37, the member 3A is a member for reducing the brightness, such as infrared light, red light, blue light, purple light, It has an infrared-absorbing member in which linear absorbers having a width in a direction perpendicular to the surface that absorbs any ultraviolet light are arranged at a uniform interval in a direction parallel to the surface.
  • louvers arranged at intervals of 0.1 to several mm can be used as the linear absorber.
  • the louver can be used in a display unit of a portable terminal to view the screen from the front, but becomes less visible as the viewing angle is inclined, and becomes invisible when a predetermined angle (for example, 60 degrees) is exceeded.
  • the direction of the linear absorber may be any direction as long as it is parallel to the surface of the member. If comprised like this aspect, the detection of a face discriminator can be made erroneous about the picked-up image image
  • the face detection preventive device is any one of infrared light, red light, blue light, purple light, and ultraviolet light as shown in FIG. 44 in the second aspect or the fifth aspect. Boundary between non-reflective and non-reflective areas, boundary between infrared and red light, blue light, violet light and ultraviolet light, or non-absorption area or infrared, red light, blue light, violet light and ultraviolet light The boundary between the region that reflects one of the two and the region that absorbs the light crosses both eyes. If comprised in this way, since the boundary where a brightness
  • the ratio of the transmission of green light to the entire visible light is equal to or greater than a predetermined value.
  • the predetermined value is preferably 75%, and more preferably 80%.
  • the face detection preventing device is the same as the third aspect or the sixth aspect, as shown in FIG. 20, for example, the members are the high brightness member 4A1 and the low brightness member 4A2. Have If comprised in this way, the effect by the high brightness member and the effect by the low brightness member will be added, and the effect which prevents face detection will increase more.
  • the face detection preventing device is the same as in the third aspect, as shown in FIG. 14 or FIG. 22, for example, as shown in FIG. 4A3, 4A4, or a brightness enhancement member 4A in which the rate of change in brightness gradually changes. If comprised in this way, if a high-intensity increasing member with a large change rate is used in a region where luminance is very low, and a high-intensity increasing member with a small change rate is used in a region where luminance is slightly low, the uncomfortable feeling can be reduced. it can.
  • the face detection preventing device is the sixth aspect, wherein the member has two or more kinds of low-luminance reducing members having different luminance change rates, or the luminance change rate gradually increases. It has a brightness reducing member that changes. With this configuration, if a low luminance reducing member with a large change rate is used in a region where the luminance is very high and a low luminance reducing member with a low change rate is used in a region where the luminance is slightly high, the uncomfortable feeling can be reduced. it can.
  • the face detection preventive device is the glasses, goggles, as shown in FIG. 12 or 13, for example, in the third, fourth, tenth or eleventh aspects. It is a type
  • a transparent plate (including all or a part of which is partially translucent), for example, a glass plate, is a member arranged so as to face both faces of a person. Or it shall consist of a plastic board (a visor is comprised of a plastic board).
  • the goggle type when worn is in contact with a person's face (for example, on the ear), and the visor type is in contact with the head but worn away from the face.
  • the goggle type includes those in which the space between the transparent plate and the face is not sealed. The same applies to goggles and visors.
  • covering the eyes of a person includes not only the case of covering completely but also the case of covering most (70% or more).
  • the position covering the specific area of the person's face refers to a portion covering the specific area of the person's face when viewed from the front when the face detection prevention tool is worn.
  • the face detection preventing device is the plate, sheet, or sheet as a whole in the third, fourth, tenth or eleventh aspect as shown in FIG. 31 or FIG. 32, for example.
  • the face detection preventive tools 1A12 and 1B12 to be attached to the face of the person, the glasses 6, the goggles 7 or the visor, and the infrared reflecting members 4A12 and 4B12 are at least the human eyes of the glasses 6, the goggles 7 or the visor. It can be installed in a position that covers.
  • the plate shape is a fixed shape having a spread in a planar shape, and is typically a glass plate shape or a plastic plate shape.
  • the sheet form has a spread in a planar shape and is flexible, and is typically a film sheet form.
  • a face detection prevention device in the form of a plate or sheet is attached to glasses or goggles, and the brightness of the low-luminance eye area is changed, so the face is easy to carry with a simple structure.
  • a detection prevention tool can be constituted.
  • the face detection preventing device is the same as that of the sixth, seventh, tenth or twelfth aspect as shown in FIG.
  • the infrared ray absorbing member 4B0 is disposed at a position covering at least a person's nose or mouth.
  • covering the person's nose or mouth includes the case of covering most (70% or more) in addition to the case of covering completely.
  • the face detection prevention device similar to glasses, goggles, or a visor often used in normal life is used to change the brightness of the nose muscle region with high brightness. Can be configured.
  • the face detection preventing device has a plate shape or a sheet shape as a whole, and is worn on the face of the person.
  • the face detection preventing device to be worn on the goggles or the visor, the infrared ray absorbing member can be worn at a position covering at least a person's nose or mouth.
  • the face detection preventing device is, for example, as shown in FIG. 10, FIG. 11, or FIG.
  • the overall shape is a spectacle-type, goggles-type, or visor-type face detection preventive tool 1A1, 1B1, 1C24, covering the position of a person's eyes, and any one of infrared, red light, blue light, purple light, and ultraviolet light. It has filters 4A, 4B, 4C1 that reflect and transmit green light.
  • the face detection preventive device is mounted on a person's face, as shown in FIG. 31 or FIG.
  • Face detection preventive tool 1A12, 1B12 to be attached to glasses, goggles or visors, which can be attached to a position covering the eyes of glasses 6, goggles 7 or visors, and can detect infrared rays, red light, blue light, purple light, ultraviolet rays Filters 4A12 and 4B12 that reflect either of them and transmit green light are provided. If comprised in this way, it can attach to spectacles, goggles, or a visor, and can comprise the face detection prevention tool which is easy to carry with a simple structure.
  • a method for manufacturing a face detection preventing device includes a detection area of a photographed image that is attached to a human face and photographed by a camera as shown in FIG. 8 (see FIG. 2), the face detection preventer 1A9 (see FIG. 3) that changes the evaluation of the brightness in the detection region 8 by the face discriminator 11 (see FIG. 3) that detects a human face from the captured image through the brightness evaluation in FIG. 24), the member 3A is arranged so as to face the specific area of the person's face so as to face the position of the face of the person whose luminance is evaluated to be low in the detection area 8 as the specific area.
  • the discriminator 11 includes a plurality of weak discriminators that have different rectangular features 9a to 9g (see FIG. 1) with respect to the detection region 8 and evaluate the luminance of the detection region 8 using the Haar-like feature amount.
  • a plurality of configured strong discriminators 10a to 10N see FIG.
  • the fixing is performed by drying.
  • transparent reflective / absorbing paints are commercially available for infrared and ultraviolet rays, so if these paints are used as raw materials and applied to predetermined places where the luminance is low or highly appreciated, good.
  • a high brightness member is automatically arranged at the position of the face of a person whose brightness is evaluated to be low in the detection area, and the face of the person whose brightness is evaluated to be high Since the brightness reducing member is automatically arranged at the position, a face detection preventing device in which the brightness enhancing member and the brightness reducing member are appropriately arranged can be manufactured.
  • FIG. 1 It is a figure which shows the example of a Haar-like feature. It is a figure which shows the relationship between a detection area and a rectangular feature. It is a figure which shows the connection structure (Cascade structure) of a strong discriminator. It is the figure which overlapped the partial field on the detection field where the face detection succeeded. It is a figure which shows the addition result of a Haar-like feature. It is a figure which shows the superimposition result of the positive Haar-like feature and the negative Haar-like feature. It is a figure which shows the feature distribution when the number of stages is 1. It is a figure which shows the feature distribution when the number of stages is five. It is a figure which shows feature distribution when the number of stages is nine.
  • FIG. 1A1 It is a perspective view of face detection prevention tool 1A1 in Example 1.
  • FIG. It is a perspective view of face detection prevention tool 1B1 in Example 2.
  • FIG. It is a perspective view of face detection prevention tool 1A2 in Example 3.
  • FIG. 10 It is a perspective view of face detection prevention tool 1A1 in Example 1.
  • FIG. It is a perspective view of face detection prevention tool 1B1 in Example 2.
  • FIG. It is a perspective view of face detection prevention tool 1A2 in Example 3.
  • FIG. 1 It is a perspective view of face detection prevention tool 1A7 in Example 11. It is a perspective view of face detection prevention tool 1B7 in Example 12. It is a perspective view of face detection prevention tool 1A8 in Example 13. It is a perspective view of face detection prevention tool 1B8 in Example 14. It is a perspective view of face detection prevention tool 1A9 in Example 15. It is a figure which shows the manufacturing method of face detection prevention tool 1A9 in Example 15. FIG. It is a perspective view of face detection prevention tool 1B9 in Example 16. It is a perspective view in the state where face detection prevention tool 1A10 in Example 17 was stuck on a spectacles lens. It is a perspective view of the state where face detection prevention tool 1B10 in Example 18 was stuck on a goggle board.
  • FIG. 33 It is a perspective view of face detection prevention tool 1B20 in Example 33. It is a perspective view of face detection prevention tool 1A21 in Example 34. It is a perspective view of face detection prevention tool 1B21 in Example 35. It is a perspective view of face detection prevention tool 1A22 in Example 36. It is a perspective view of face detection prevention tool 1B22 in Example 37. It is a perspective view of face detection prevention tool 1A23 in Example 38. It is a perspective view of face detection prevention tool 1B23 in Example 39. It is a perspective view of face detection prevention tool 1C24 in Example 40. It is a perspective view of face detection prevention tool 1C25 in Example 41.
  • Face detection is the most important and basic technique as a face image processing technique for understanding the face, and is used as preprocessing for face recognition.
  • the best known method of face detection is the algorithm published in 2001 by Viola and Jones [P. Viola and M.M. Jones, “Robust Real-Time Face Detection,” International Journal of Computer Vision, (IJCV), Vol. 57, no. 2, pp. 134-157, 2004].
  • the face detection method (Viola-Jones method) proposed by Viola et al. Is an algorithm composed of three main concepts: Haar-like features, integral image method, and cascade configuration of discriminators, with high accuracy and high speed detection. Processing is realized.
  • the majority of face detection methods currently use the Viola-Jones method. In the following, an outline of the Haar-like feature quantity and the Cascade configuration of the discriminator is described.
  • FIG. 1 shows an example of the Haar-like feature.
  • a plurality of basic patterns (rectangular features) 9a to 9g of Haar-like features are defined.
  • the Haar-like feature basic patterns 9a to 9g are respectively composed of a first region (region indicated by diagonal lines in one direction) r1 and a second region adjacent thereto (regions indicated by diagonal lines in two intersecting directions). ) R2.
  • the Haar-like feature amount is a feature amount in the image, and a difference between the average luminance s (r1) of the first region r1 and the average luminance s (r2) of the second region r2 as in the following equation (1).
  • the Haar-like feature amount is positive (+) if the luminance of the first region is relatively higher than the luminance of the second region, and is negative (-) if the luminance is relatively low.
  • Fig. 2 shows the relationship between the detection area and the rectangular feature.
  • the detection area 8 is an area cut out from an arbitrary place in the photographed image, and is an area where it is determined whether or not there is a human face using a discriminator.
  • the rectangular feature 9d of FIG. 1D is arranged at the position of both eyes of the person, and in the detection area of FIG. 2B, the rectangular feature 9g of FIG. The left eye and the upper left part thereof are arranged.
  • a large number of rectangular features 9a to 9g are used for one detection region 8 by changing the positions and sizes of the basic patterns (rectangular features) 9a to 9g in the detection region 8.
  • Each of the rectangular features 9a to 9g constitutes a weak discriminator that discriminates whether or not the feature is suitable for this feature by comparing the Haar-like feature amount obtained from each feature with a threshold value.
  • the weak discriminator discriminates its own rectangular feature by referring to a database in which the relationship between the position placed on the face in the captured image and the Haar-like feature quantity is learned.
  • strong discriminators 10a to 10N composed of a plurality of weak discriminators having different rectangular features 9a to 9g are connected in a plurality of columns (Cascade) for each detection region 8, and a plurality of connected Based on the sequential determination by the strong discriminators 10a to 10N, it is determined whether the area is “face” or “non-face” (that is, whether the area has a face).
  • FIG. 3 shows a connection configuration (Cascade) of the strong discriminators 10a to 10N.
  • “face / non-face” is determined in order from the first (top) strong discriminator 10a, and the detection area is determined as “non-face” by the strong discriminator 10a. In this case, the subsequent determination process is not performed, and the process for the detection area 8 is terminated.
  • the processing is taken over by the next strong discriminator 10b.
  • the number of weak classifiers constituting the strong classifiers 10a to 10N is the smallest in the strongest classifier 10a at the highest level, and is increased as the strong classifier in the lower level is advanced. "" Can be determined at high speed. Selection of a rectangular feature effective for face detection from a large number of rectangular features based on the Haar-like features 9a to 9g, the configuration of weak classifiers in the strong classifiers 10a to 10N, and the connection order of the strong classifiers can It is determined in advance by reinforcement learning (Boosting) using an image and a non-face image as learning data.
  • Boosting reinforcement learning
  • any one of the strong discriminators 10a to 10N may be determined to be “non-face” in the face detection cascade connection configuration. That is, in the weak classifiers constituting the strong classifiers 10a to 10N, the noise added to the face image greatly changes the Haar-like feature quantities 9a to 9g, thereby causing the weak classifier to misclassify. . Therefore, by analyzing the rectangular features 9a to 9g effective for face detection selected by reinforcement learning (Boosting), it was examined which part of the face should be changed appropriately.
  • reinforcement learning reinforcement learning
  • the rectangular features 9a to 9g selected based on the learning data using 5000 face images and 3000 non-face images are set to a numerical value in the first area r1 of +1 and the second area r2.
  • the detection area 8 shows a partial area having a positive or negative value, and the influence of face detection by changing the luminance value in the face Identified the location where is large.
  • FIG. 4 shows the above-described partial area superimposed on the detection area 8 in which face detection is successful.
  • a first overlapping region (region indicated by diagonal lines in one direction) R1 is a partial region having a positive value having a large absolute value (region having relatively high luminance)
  • a second overlapping region ( R2 indicates a partial region (region with relatively low luminance) having a large absolute value and a negative value.
  • normalization is performed so that the positive / negative values of the partial area are in the range of ⁇ 1 to 1, and the positive partial area in the range of the maximum value to the maximum value ⁇ is the first overlapping area.
  • a negative partial region in the range from R1, minimum value to minimum value + ⁇ is indicated by a second overlapping region R2.
  • the first overlapping region R1 is concentrated around the nose and the mouth, and the second overlapping region R2 is concentrated around the eye.
  • ⁇ increases, the area of the region increases. I can see it going.
  • Fig. 5 shows the addition result of the Haar-like feature.
  • Fig. 5 (a) shows the result of adding positive Haar-like features (adding Haar-like features for partial regions with positive values to extract regions with a large absolute value (maximum value-maximum value - ⁇ ))
  • Fig. 5 (b) shows the result of addition of negative Haar-like features (addition of Haar-like features of partial regions having negative values to obtain a region having a large absolute value (minimum value to minimum value + ⁇ )) The figure which extracted).
  • the distribution of all Haar-like features evaluated up to the specified stage was plotted on the image. Centering on 50% gray, the positive features were added as +1 and the negative features were added as -1.
  • FIG. 6 shows the result of superposition of the positive Haar-like feature and the negative Haar-like feature.
  • the display ratio with respect to the maximum value that can be taken is ⁇ , and the result of filtering using that as a threshold is displayed superimposed on the original image.
  • ⁇ 1.000 is shown, and all features (Haar-like features that take all positive values or negative values) are displayed.
  • Fig. 7 shows the feature distribution when the number of stages is one.
  • Stage 1 is an overlay of the Haar-like features included in the first strong classifier. These features have many rough features and are suitable for quick discrimination. As the ⁇ value is larger, many features are overlapped. Therefore, it becomes easier to destroy the facial features by changing the luminance value.
  • the second overlapping region R2 is a portion having a feature with a low brightness value of the face, and destroys the feature by making it brighter.
  • the first overlapping region R1 is a portion having a feature with a high face luminance value, and the feature is destroyed by darkening.
  • FIG. 8 shows the feature distribution when the number of stages is five.
  • Stage 5 is an overlay of Haar-like features included in up to five strong classifiers. Detailed features are included.
  • the portion covering the eye is the second overlapping region R2
  • the lower side of the eye is the first overlapping region R1.
  • FIG. 9 shows the feature distribution when the number of stages is nine.
  • Stage 9 is an overlay of Haar-like features included in up to nine strong classifiers. More detailed features are included.
  • the portion covering the eye is the second overlapping region R2
  • the lower side of the eye is the first overlapping region R1
  • the portion covering the eye is a portion where the luminance value is evaluated low, and the lower side of the eye and between the eyes are portions where the luminance value is evaluated high.
  • Example 1 shows an example of a spectacle-type face detection prevention device in which the entire spectacle lens functions as an infrared reflection filter.
  • FIG. 10 is a perspective view of the face detection preventing tool 1A1 according to the first embodiment. It is an example of an eyeglass type, and the spectacle lens part 3A as a member is an infrared reflection filter as a high brightness member.
  • the face detection preventive tool 1A1 includes a spectacle lens unit 3A composed of an infrared reflection filter 4A that transmits visible light and reflects infrared rays, a frame unit 2A that supports the spectacle lens unit 3A in front of a person's eyes, and a frame unit 2A It is composed of a mounting portion 5A (corresponding to a vine portion of glasses) that is mounted on the face.
  • the spectacle lens unit 3A is made of a transparent plate (including all or a part of which is translucent), for example, glass or plastic.
  • the face detection preventive tool 1A1 is attached to the face of the person by putting the attachment portion 5A on the person's ear.
  • the spectacle lens unit 3A is arranged to face a specific area of the person's face.
  • the position facing the specific area of the person's face is a portion of a member that overlaps the specific area of the person's face when viewed from the front when the face detection prevention tool is worn.
  • it should be placed so as to cover a specific area of the person's face when viewed from the front, but it does not necessarily have to be placed so as to cover the whole area.
  • the specific region is the eye, but the spectacle lens unit 3A as a member is arranged in front of the human eye so as to cover the eye.
  • the brightness of the eye portion in the captured image is evaluated to be low by the face discriminator.
  • the face detection preventing tool 1A1 when a person wears the face detection preventing tool 1A1, the eye portion is covered with the infrared reflection filter 4A. In this state, the infrared reflection filter 4A transmits visible light, so that a person can see the scenery through the filter.
  • the face detection preventing tool 1A1 in which the spectacle lens unit 3A is configured by the infrared reflection filter 4A is voyeurized, infrared rays are reflected from the spectacle lens unit 3A toward the camera of the voyeur.
  • the camera Since the camera is sensitive to infrared rays, the brightness of the portion of the captured image that covers the human eye increases. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet. Moreover, since no light source is used, natural communication is possible. As described above, it is possible to realize a face detection preventing tool that achieves both natural communication and privacy protection. This effect can be similarly applied to the following embodiments. In order to avoid duplication, description of the following embodiments is omitted.
  • red light reflection filter 4A for the spectacle lens unit 3A
  • the camera is sensitive to red light, and the face discriminator 11 cannot detect a human face.
  • the infrared and red light reflection filters are used, the effects of the infrared reflection filter and the red light reflection filter are added, so that it is more difficult to detect a human face.
  • red light, blue light, purple light, and ultraviolet light can be used as reflected light in addition to infrared light.
  • infrared rays and ultraviolet rays are not perceived by human eyes but are sensitive to the camera, it is preferable to use them.
  • the ratio of human eyes to green light is the largest at about 70%, so there is not much discomfort if green light is transmitted.
  • the ratio of the amount of energy reflected to the total amount of any of infrared light, red light, blue light, violet light, and ultraviolet light is 50% or more.
  • the amount of energy transmitted with respect to the total amount of green light may be 50% or more. It is preferable to reflect 60% or more of infrared rays and transmit 60% or more of green light. More preferably, 80% or more of infrared light is reflected and 80% or more of green light is transmitted.
  • the ratio of the transmission of green light to the entire visible light is preferably a predetermined value or more, for example, 75% or more, and more preferably 80% or more.
  • Example 2 shows an example of a goggle-type face detection prevention device in which the entire goggle plate functions as an infrared reflection filter.
  • FIG. 11 is a perspective view of the face detection preventing tool 1B1 according to the second embodiment.
  • the face detection preventive tool 1B1 includes a goggle plate 3B composed of an infrared reflection filter 4B that transmits visible light and reflects infrared rays, a support unit 2B that supports the goggle plate 3B in front of the person's face, and the support unit 2B that supports the person's face. It is comprised by the mounting part 5B (it corresponds to the vine part of spectacles) with which it mounts
  • the goggle plate 3B is made of a transparent plate (including all or part of a translucent plate), for example, glass or plastic.
  • the face detection preventing tool 1B1 is attached to the person's face by putting the attachment part 5B on the person's ear.
  • the goggle board 3B When worn, the goggle board 3B is placed in front of the person's eyes so as to cover the person's eyes.
  • the goggle board 3B is placed in front of the person's eyes so as to face a specific area of the person's face.
  • the position facing the specific area of the person's face is a portion of a member that overlaps the specific area of the person's face when viewed from the front when the face detection prevention tool is worn.
  • the person's face when viewed from the front, but it does not necessarily have to be placed so as to cover the whole area. (For example, it depends on the reflectance and the performance of the face discriminator, but if the reflectance is high, it is sufficient to cover 70% or more).
  • the specific area is the eye, but the goggle plate 3B as a member is arranged in front of the person's eyes so as to cover the eyes.
  • the face discriminator 11 evaluates the luminance of the eye portion to be low.
  • the face detection preventing tool 1B1 when a person wears the face detection preventing tool 1B1, the eye portion is covered with the infrared reflection filter 4B. In this state, since the infrared reflection filter 4B transmits visible light, the person can see the scenery through the filter.
  • the face detection preventing tool 1B1 having the goggle plate 3B composed of the infrared reflection filter 4B is voyeurized, infrared rays are reflected from the goggle plate 3B toward the camera of the voyeur. Since the camera is sensitive to infrared rays, the brightness of the portion of the captured image that covers the human eye increases. As a result, even if the captured image leaks on the Internet, the face discriminator has an effect that it cannot detect the face of the person. Moreover, since no light source is used, natural communication is possible.
  • Example 3 shows an example of a spectacle-type face detection prevention device in which a portion of an eyeglass lens covering the eye functions as an infrared reflection filter.
  • differences from the first embodiment will be mainly described.
  • FIG. 12 is a perspective view of the face detection preventing tool 1A2 according to the third embodiment.
  • the spectacle lens unit 3A as a whole constitutes an infrared reflection filter, but in this example, a portion covering the eye of the spectacle lens unit 3A as a member constitutes an infrared reflection filter 4A. That is, there is a portion 3G made of transparent glass or transparent plastic in a portion away from the eye of the spectacle lens portion 3A.
  • the face detection preventive tool 1A2 is attached, the eye part is covered with the region constituting the infrared reflection filter 4A of the spectacle lens unit 3A, so that the part that covers the eye in the photographed image has a luminance by the face discriminator 11. Highly appreciated.
  • the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet. Moreover, since no light source is used, natural communication is possible.
  • Example 4 shows an example of a goggle-type face detection prevention device in which a part of the goggles covering the eyes functions as an infrared reflection filter.
  • differences from the second embodiment will be mainly described.
  • FIG. 13 is a perspective view of the face detection preventing tool 1B2 according to the fourth embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B.
  • the portion of the goggle plate 3B as a member that covers the eyes constitutes the infrared reflection filter 4B. That is, a part 3G made of transparent glass or transparent plastic exists in a part of the goggle plate 3B away from the eyes. Even in this case, when the face detection preventing tool 1B2 is attached, the eye part is covered with the region constituting the infrared reflection filter 4B of the spectacle lens unit 3A. Highly appreciated. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet. Moreover, since no light source is used, natural communication is possible.
  • Example 5 is a spectacle-type face detection preventing device according to Example 5, in which the function of the infrared reflection filter is the strongest in the part covering the center of the eye of the spectacle lens part and gradually changes to 0 in the part far from the eye.
  • An example is shown. Here, differences from the third embodiment will be mainly described.
  • FIG. 14 is a perspective view of the face detection preventing tool 1A3 according to the fifth embodiment.
  • the portion of the spectacle lens portion 3A covering the eye constitutes the infrared reflection filter 4A, and the spectacle lens portion 3A has a sharp reflectance at the boundary between the portion having the function of the infrared reflection filter 4A and the portion not having it.
  • the reflectance gradually changes from the central part of the eye, which is the part having the function of the infrared reflection filter 4A, to the part not having the function.
  • the face detection preventing tool 1A3 when the face detection preventing tool 1A3 is attached, the center of the eye is covered with a region where the function of the infrared reflection filter 4A in the spectacle lens unit 3A as a member is relatively large.
  • the central part is highly evaluated by the face discriminator 11. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 6 shows an example of a goggle-type face detection preventive device in which the function of the infrared reflection filter is the strongest in the part covering the eyes of the goggle plate and gradually changes to 0 in the far part.
  • the function of the infrared reflection filter is the strongest in the part covering the eyes of the goggle plate and gradually changes to 0 in the far part.
  • FIG. 15 is a perspective view of the face detection preventing tool 1B3 according to the sixth embodiment.
  • the part of the goggle plate 3B covering the eyes constitutes the infrared reflection filter 4B, and the reflectance changes rapidly between the part having the function of the infrared reflection filter 4B and the part having no function of the goggle plate 3B.
  • the reflectance gradually changes from the central part of the eye, which is the part having the function of the infrared reflection filter 4B, to the part not having the function.
  • the face detection preventing tool 1B3 when the face detection preventing tool 1B3 is mounted, the center of the eye is covered with a region having a relatively large function of the infrared reflection filter 4B of the goggle plate 3B as a member.
  • the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 7 shows an example of a spectacle-type face detection prevention device in which infrared reflection filters are arranged in a mosaic pattern on the spectacle lens unit.
  • infrared reflection filters are arranged in a mosaic pattern on the spectacle lens unit.
  • FIG. 16 shows a perspective view of the face detection preventing tool 1A4 according to the seventh embodiment.
  • the spectacle lens unit 3A as a whole constitutes the infrared reflection filter 4A.
  • the infrared reflection filter 4A is arranged in a mosaic pattern on the spectacle lens unit 3A as a member. Since the eyeglass lens unit 3A is arranged in a mosaic shape, the mosaic part does not necessarily completely cover the eyes, but covers many parts of the eye (for example, covers 70% or more) because the number of mosaic pieces is large. .
  • the portion of the eye covered with the mosaic piece in the captured image is highly evaluated by the face discriminator 11.
  • the face discriminator detects the face of a person even if the shot image leaks onto the Internet There is an effect that it becomes impossible.
  • Example 8 shows an example of a goggle-type face detection prevention device in which infrared reflection filters are arranged in a mosaic on a goggle plate.
  • infrared reflection filters are arranged in a mosaic on a goggle plate.
  • FIG. 17 shows a perspective view of the face detection preventing tool 1B4 according to the eighth embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B.
  • the infrared reflection filter 4B is arranged in a mosaic pattern on the goggle plate 3B as a member. Since the goggle plate 3B is arranged in a mosaic shape, the mosaic portion does not necessarily completely cover the eye, but covers many portions of the eye (for example, covers 70% or more) because the number of mosaic pieces is large. The portion of the eye covered with the mosaic piece in the captured image is highly evaluated by the face discriminator 11.
  • the face discriminator detects the face of a person even if the shot image leaks onto the Internet There is an effect that it becomes impossible.
  • Example 9 shows an example of a goggle-type face detection prevention device in which the entire goggle functions as an infrared absorption filter.
  • differences from the second embodiment will be mainly described.
  • FIG. 18 is a perspective view of the face detection preventing tool 1B5 according to the ninth embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B.
  • the entire goggles plate 3B constitutes the infrared absorption filter 4B0.
  • the face detection preventive tool 1B5 when mounted, most of the nose muscles are covered with the region constituting the infrared absorption filter 4B0 of the goggle plate 3B as a member.
  • the brightness of the portion is evaluated to be low by the face discriminator 11.
  • the entire nose is covered, but the majority (70% or more) should be covered.
  • the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 10 shows an example of a goggle-type face detection prevention device in which a part (or upper half of the goggle) covering the nose muscles functions as an infrared absorption filter.
  • a part (or upper half of the goggle) covering the nose muscles functions as an infrared absorption filter.
  • FIG. 19 is a perspective view of the face detection preventing tool 1B6 according to the tenth embodiment.
  • the entire goggle plate 3B constitutes the infrared absorption filter 4B0.
  • the portion of the goggle plate 3B that covers the nose muscles constitutes the infrared reflection filter 4B0. That is, a part 3G made of transparent glass or transparent plastic exists in a part away from the nose of the goggle plate 3B. Even in this case, when the face detection preventing device 1B6 is worn, most of the nose muscles are covered with the region constituting the infrared absorption filter 4B0 of the goggle plate 3B as a member.
  • the portion is evaluated with low brightness by the face discriminator 11. Ideally, the entire nose is covered, but the majority (70% or more) should be covered. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 11 shows an example of a spectacle-type face detection prevention device that uses both an infrared reflection filter and an infrared absorption filter for the spectacle lens unit.
  • differences from the first embodiment will be mainly described.
  • FIG. 20 shows a perspective view of the face detection preventive tool 1A7 in the eleventh embodiment.
  • the entire spectacle lens portion 3A constitutes the infrared reflection filter 4A.
  • the portion covering both eyes of the spectacle lens portion 3A as a member constitutes the infrared reflection filter 4A1, and the lower portion thereof. Constitutes the infrared absorption filter 4A2.
  • the portion covering the eye has a feature with a low luminance value, its lower portion, and both eyes The part in between is a part having a high (bright) luminance value.
  • the infrared reflection filter 4A1 is disposed at a position corresponding to the portion covering the eye of the spectacle lens unit 3A, and the infrared absorption filter 4A2 is disposed at a position corresponding to the lower portion thereof, compared with the first embodiment.
  • the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 12 is an example of a goggle-type face detection prevention device that uses both an infrared reflection filter and an infrared absorption filter.
  • differences from the second embodiment and the ninth embodiment will be mainly described.
  • FIG. 21 shows a perspective view of the face detection preventing tool 1B7 in the twelfth embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B
  • the entire goggle plate 3B constitutes the infrared absorption filter 4B0
  • the portion of the goggle plate 3B as a member that covers the eyes Constitutes the infrared reflection filter 4B1, and the lower part and the part between the eyes constitute the infrared absorption filter 4B2.
  • the infrared reflection filter 4B1 is disposed at a position corresponding to the portion covering the eye of the goggle plate 3B, and the infrared absorption filter is disposed at a position corresponding to the lower portion and the portion between both eyes. If 4B2 is arranged, the discrimination of the face discriminator 11 becomes more difficult as compared with the first embodiment. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 13 shows an example of a spectacle-type face detection preventing device using two types of infrared reflection filters having different reflectivities in the spectacle lens unit.
  • differences from the third embodiment will be mainly described.
  • FIG. 22 is a perspective view of the face detection preventing tool 1A8 according to the thirteenth embodiment.
  • the portion of the spectacle lens portion 3A that covers the eyes constitutes the infrared reflection filter 4A
  • the spectacle lens portion 3A has a portion 4A that has the function of an infrared reflection filter and a portion 3G that does not have it.
  • the spectacle lens portion 3A as a member has a portion 4A3 having a strong function of an infrared reflection filter, a portion 3G not having it, and an intermediate portion 4A4. That is, the reflectance of the infrared reflection filter is two levels.
  • the portion of the eyeglass lens portion 3A covering the eye constitutes an infrared reflection filter 4A3 having a high reflection function, and the portion between both eyes constitutes an infrared reflection filter 4A4 having a low reflection function.
  • the portion constitutes a transparent portion 3G.
  • the part covering the eye has a feature with a low luminance value
  • the part between the eyes has a feature with a little low luminance value (a part with a low feature and a high value).
  • the parts having features overlap), and the lower part thereof has a high brightness value (bright).
  • the infrared reflection filter 4A3 having a high reflection function is provided at a position corresponding to a portion covering the eye of the spectacle lens unit 3A
  • the infrared reflection filter 4A4 having a low reflection function is provided at a position corresponding to a portion close to both eyes. If the transparent portion 3G is arranged at a position corresponding to the lower portion of the image, it is difficult to discriminate the face discriminator 11 although it is somewhat inferior to the eleventh embodiment. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 14 shows an example in which two types of infrared reflection filters that are goggles-type face detection preventing devices having different reflectivities are used. Here, differences from the fourth embodiment will be mainly described.
  • FIG. 23 is a perspective view of the face detection preventing tool 1B8 according to the fourteenth embodiment.
  • the portion of the goggle plate 3B that covers the eyes constitutes the infrared reflection filter 4B
  • the goggle plate 3B has a portion 4B that has the function of the infrared reflection filter and a portion 3G that does not have it.
  • the goggle plate 3B as a member has a portion 4B3 having a strong function of an infrared reflection filter, a portion 3G not having it, and an intermediate portion 4B4. That is, the reflectance of the infrared reflection filter is two levels.
  • the portion of the goggle plate 3B covering the eyes constitutes the infrared reflection filter 4B3 having a high reflection function
  • the portion close to both eyes constitutes the infrared reflection filter 4B4 having a low reflection function
  • the lower portion thereof is formed.
  • the transparent portion 3G is configured.
  • the infrared reflection filter 4B3 having a high reflection function is provided at a position corresponding to the portion covering the eyes of the goggle plate 3B
  • the reflection function is provided at a position corresponding to a portion between the eyes.
  • the low infrared reflection filter 4B4 is provided with the transparent portion 3G at a position corresponding to the lower portion of the filter, it is difficult to discriminate the face discriminator 11 although it is somewhat inferior to the twelfth embodiment. Become. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 15 shows an example of a spectacle-type face detection prevention device in which an infrared reflection filter and an infrared absorption filter are automatically arranged on a spectacle lens unit by a computer according to a feature distribution.
  • an infrared reflection filter and an infrared absorption filter are automatically arranged on a spectacle lens unit by a computer according to a feature distribution.
  • FIG. 24 is a perspective view of the face detection preventing tool 1A9 according to the fifteenth embodiment.
  • the part covering the eye of the spectacle lens part 3A constitutes the infrared reflection filter 4A1
  • the lower part constitutes the infrared absorption filter 4A2
  • a portion constituting the infrared reflection filter 4A1 and a portion constituting the infrared absorption filter 4A2 are automatically arranged in the eyeglass lens portion 3A by a computer.
  • the face discriminator 11 that detects the face of a person, the position of the face of the person whose luminance is evaluated to be low in the detection area 8 and the position of the face of the person whose brightness is evaluated to be high in the detection area 8 are determined. It memorize
  • a portion where the infrared reflection filter 4A1 and the infrared absorption filter 4A2 are not arranged becomes a transparent portion 3G.
  • FIG. 25 shows a method for manufacturing the face detection preventing tool 1A9 according to the fifteenth embodiment.
  • the expression “and (or)” in FIG. 25 may be “and” in the present embodiment, but there is a pattern to which “or” can be applied as a modified example, so this expression is used.
  • a raw material and a transparent substrate for forming the member 3A of the face detection preventing tool 1A9 are prepared.
  • the member 3A is attached to a person's face and changes the evaluation of the brightness of the face discriminator 11 that detects the person's face from the photographed image through the evaluation of the brightness of the detection area 8 of the photographed image taken by the camera.
  • the member 3A of the face detection preventive tool 1A9 to be arranged is a member arranged to face a specific region of the person's face.
  • the raw material of the high-brightness member that is arranged at the position of the face of the person whose luminance is evaluated to be low in the detection region 8 as the specific region and changes the luminance high, and / or the specific region
  • a raw material for a low-brightness reducing member that is arranged at the position of the face of the person whose luminance is highly evaluated and changes the luminance low, and a transparent substrate for mounting the raw material are prepared (S001).
  • a paint is used as the raw material.
  • the face discriminator 11 is used to determine and store the position of the face of the person whose luminance is evaluated to be low and / or high. That is, a face discriminator 11 that detects the face of a person from a photographed image through evaluation of the brightness of the detection area 8 of the photographed image taken by the camera, and has different rectangular features 9a to 9g with respect to the detection region 8. And a face discriminator 11 constituted by connecting a plurality of strong discriminators 10a to 10N composed of a plurality of weak discriminators that evaluate the luminance of the detection region 8 using the Haar-like feature quantity. (See FIG. 3).
  • the face discriminator 11 detects the face of a person by determining whether or not there is a face in the detection area 8 based on sequential determination by the plurality of strong discriminators 10a to 10N connected. Using such a face discriminator 11, the position of the face of the person whose luminance is evaluated to be low in the detection area 8 as the specific area and / or the luminance is highly evaluated in the detection area 8 as the specific area. The position of the person's face is obtained and stored in the storage unit of the computer (S002).
  • the position of the face of the person whose luminance is evaluated to be low in the detection area 8 is read from the storage unit, and the raw material for the high brightness member is mounted on the portion corresponding to the position on the transparent substrate. Then, the position of the face of the person whose luminance is highly evaluated in the detection region 8 is read, and the raw material for the low luminance member is mounted on the portion corresponding to the position on the transparent substrate (S003).
  • the transparent substrate has a spectacle lens shape.
  • the raw material for the brightness enhancement member and the raw material for the brightness reduction member are fixed to the transparent substrate (S004).
  • a paint when used as a raw material, fixing is performed by drying.
  • transparent reflective paints and absorbing paints are commercially available for infrared rays and ultraviolet rays, these paints may be used as raw materials and applied to predetermined places where the luminance is low or highly evaluated.
  • these multilayer films may be used as raw materials, and the multilayer films may be attached to predetermined positions. .
  • a method of immersing in a dyeing solution is common. When all the lenses are immersed, a lens with uniform color is obtained. Partial immersion gives a partially dyed lens. When it is gradually lifted from the staining solution, a lens in which the color density gradually changes can be obtained. Uniform dyed lenses can be obtained even when laser irradiation is performed after vapor deposition of dye on the lens surface by vapor phase transfer method (printing sublimation dye ink on transfer paper, sublimating the dye and vapor deposition on the lens surface) .
  • vapor phase transfer method printing sublimation dye ink on transfer paper, sublimating the dye and vapor deposition on the lens surface
  • glass is dyed by mixing a colorant such as cobalt chloride, selenium dioxide, chromium dioxide or the like with a glass raw material and baking it.
  • the high brightness member is arranged at the position of the face of the person whose brightness is evaluated to be low in the detection region 8, and the low brightness member is placed at the position of the face of the person whose brightness is highly evaluated.
  • the high luminance member and the low luminance member are appropriately arranged can be manufactured.
  • Example 16 is an example of a goggle-type face detection prevention device in which an infrared reflection filter and an infrared absorption filter are automatically arranged by a computer in accordance with a feature distribution.
  • an infrared reflection filter and an infrared absorption filter are automatically arranged by a computer in accordance with a feature distribution.
  • FIG. 26 is a perspective view of the face detection preventing tool 1B9 according to the sixteenth embodiment.
  • the part of the goggle plate 3B that covers the eye constitutes the infrared reflection filter 4B1
  • the lower part constitutes the infrared absorption filter 4B2.
  • a part constituting the infrared reflection filter 4B1 and a part constituting the infrared absorption filter 4B2 are automatically arranged on the goggle plate 3B by a computer.
  • a face discriminator 11 that detects the face of a person, the position of the person's face whose luminance is evaluated to be low in the detection area 8 and the luminance in the detection area 8 of the photographed image without wearing the face detection prevention tool.
  • the position of the face of the person who is highly evaluated is obtained and stored in the storage unit of the computer.
  • the position of the face of the person whose luminance is evaluated to be low in the detection area is read out from the storage unit, and the infrared reflection filter 4B1 as a high luminance member is arranged on the goggle plate 3B.
  • the position of the face of a person who is highly evaluated is read out, and an infrared absorption filter 4B2 is disposed as a low brightness member.
  • the manufacturing method of the face detection preventing tool 1B9 is the same as that of Example 15 except that the transparent substrate of Example 15 is in the shape of a spectacle lens and changes to a goggle plate shape.
  • An infrared reflection filter 4B1 is arranged at the position of the face of the person who is evaluated to have low brightness
  • an infrared absorption filter 4B2 is arranged at the position of the face of the person who is evaluated to have high brightness, both of which make it difficult for the face discriminator 11 to discriminate.
  • the face discriminator cannot detect the face of the person even when the photographed image flows out on the Internet.
  • Example 17 shows an example of a sheet-like face detection preventing device, which is an infrared reflecting sheet that is pasted on the entire eyeglass lens or at a position covering the eye.
  • a sheet-like face detection preventing device which is an infrared reflecting sheet that is pasted on the entire eyeglass lens or at a position covering the eye.
  • FIG. 27 is a perspective view showing a state where the face detection preventing tool 1A10 according to the seventeenth embodiment is attached to the spectacle lens 6A.
  • the entire spectacle lens unit 3A constitutes the infrared reflection filter 4A, but in this embodiment, an infrared reflection sheet as the face detection preventing tool 1A10 is attached to a portion of the spectacle lens 6A covering the eye.
  • the face detection preventing tool 1A10 is composed of an infrared reflecting sheet, and has an infrared reflecting filter 4A10 as a member and an adhesive layer 5A10 on the back of the sheet as a mounting portion.
  • the face detection preventive tool 1A10 when the face detection preventive tool 1A10 is attached to the glasses 6, the eye part is covered with the infrared reflection filter 4A10 made of an infrared reflection sheet, so that the eye part in the photographed image is highly evaluated by the face discriminator 11. Is done. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 18 shows an example of a sheet-like face detection preventive device, which is an infrared reflective sheet that is pasted on the entire goggle plate or a portion that covers the eyes.
  • a sheet-like face detection preventive device which is an infrared reflective sheet that is pasted on the entire goggle plate or a portion that covers the eyes.
  • FIG. 28 is a perspective view showing a state where the face detection preventing tool 1B10 in Example 18 is stuck on the goggle plate 7B.
  • the goggle plate 3B as a whole constitutes the infrared reflection filter 4B, but in this example, an infrared reflection sheet as the face detection preventing tool 1B10 is attached to the portion of the goggle plate 7B covering the eyes.
  • the face detection preventing tool 1B10 is composed of an infrared reflecting sheet, and has an infrared reflecting filter 4B10 as a member and an adhesive layer 5B10 on the back of the sheet as a mounting portion.
  • the infrared reflection filter 4B10 extends over the entire sheet.
  • the face detection preventing tool 1B10 when the face detection preventing tool 1B10 is mounted, the eye part is covered with the infrared reflection filter 4B10 made of an infrared reflection sheet, and thus the eye part in the photographed image is highly evaluated by the face discriminator 11. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 19 shows an example of a sheet-like face detection prevention device in which an infrared reflection filter portion is pasted at a position covering the eye of a spectacle lens.
  • differences from the embodiment 17 will be mainly described.
  • FIG. 29 is a perspective view showing a state where the face detection preventing tool 1A11 according to the nineteenth embodiment is attached to the spectacle lens 6A.
  • the infrared reflection sheet 1A10 is attached to the entire eyeglass lens 6A or a portion covering the eye.
  • a sheet 1A11 having the infrared reflection filter 4A10 is attached to a portion covering the eye of the eyeglass lens 6A.
  • the face detection preventing tool 1A11 is in the form of a sheet, and has an infrared reflection filter 4A10 as a member when attached to the spectacle lens 6A in a part covering the eyes, and an adhesive layer 5A10 on the back of the sheet as a mounting part. .
  • a transparent portion 1G exists in a portion away from the eyes of the sheet 1A11. Even in this case, when the face detection preventing tool 1A11 is attached to the glasses 6, the eye part is covered with the infrared reflection filter 4A10 part of the sheet 1A11. Is done. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 20 shows an example of a sheet-like face detection prevention device in which an infrared reflection filter portion is pasted at a position covering the eyes of goggles.
  • an infrared reflection filter portion is pasted at a position covering the eyes of goggles.
  • FIG. 30 is a perspective view showing a state where the face detection preventing tool 1B11 according to the twentieth embodiment is attached to the goggle plate 7B.
  • the infrared reflection sheet 1B10 is attached to the entire goggle plate 7B or the part covering the eyes, but in this example, the sheet 1B11 having the infrared reflection filter 4B10 is attached to the part of the goggle board 7B covering the eyes.
  • the face detection preventing device 1B11 has a sheet shape, and has an infrared reflection filter 4B10 as a member when attached to the goggle plate 7B in a portion covering the eyes, and has an adhesive layer 5B10 on the back surface of the sheet as a mounting portion. .
  • a transparent portion 1G exists in a portion away from the eyes of the sheet 1B11. Even in this case, when the face detection preventing tool 1B11 is attached to the goggles 7, the eye part is covered with the infrared reflection filter 4B10 part of the sheet 1B11. Is done. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 21 is a face detection preventing tool that can be attached to and detached from spectacles, and a transparent plate (all or a part of which is semi-transparent) to which a part having an infrared reflection function is attached to a part covering the eye of a spectacle lens.
  • a transparent plate all or a part of which is semi-transparent to which a part having an infrared reflection function is attached to a part covering the eye of a spectacle lens.
  • Differences from the first embodiment will be mainly described.
  • FIG. 31 is a perspective view showing a state in which the face detection preventing tool 1A12 according to Example 21 is attached to the spectacle lens 6A.
  • the entire spectacle lens unit 3A constitutes the infrared reflection filter 4A.
  • the spectacle lens 6A is provided with a transparent plate (for example, a glass plate or a plastic plate) having an infrared reflection function as the face detection preventing tool 1A12. Install.
  • the face detection preventive tool 1A12 is configured by a spectacle lens-shaped transparent plate having an infrared reflection function, an infrared reflection filter 4A12 as a member is supported by a frame, and the frame is a hinge as a mounting portion on the frame 2A of the glasses 6 It is attached with 5A12.
  • the transparent plate 1A12 is placed in front of the spectacle lens 6A.
  • the wearer views the scenery through the spectacle lens 6A and the transparent plate 1A12.
  • the face detection preventive tool 1A12 is attached to the glasses 6, the eye part is covered with the transparent plate 1A12 having an infrared reflection function (functioning as the infrared reflection filter 4A12).
  • the discriminator 11 evaluates the brightness highly. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 22 is a face detection preventing tool that can be attached to and detached from goggles, and includes a transparent plate (all or part of which is translucent) to which a part having an infrared reflection function is attached to a part covering the eyes of the goggles ). Differences from the second embodiment will be mainly described.
  • FIG. 32 is a perspective view showing a state in which the face detection preventing tool 1B12 according to the twenty-second embodiment is attached to the goggles 7.
  • the entire goggle plate 7B constitutes the infrared reflection filter 4B.
  • a transparent plate for example, a glass plate or a plastic
  • the face detection preventing tool 1B12 is formed of a transparent plate having an infrared reflection function.
  • the transparent plate has an infrared reflection filter 4B12 as a member.
  • one end of the transparent plate 1B12 is bent into a U shape, and the goggle plate 7B is fitted into the U-shaped groove when mounted.
  • the wearer views the scenery through the goggle board 7B and the transparent board 1B12.
  • the transparent plate 1B12 having an infrared reflection function (functioning as the infrared reflection filter 4B12), so that the eye portion in the photographed image is the face discriminator 11.
  • the brightness is highly evaluated.
  • the face discriminator 11 has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 23 shows an example of a transparent plate that is a face detection preventing tool that can be attached to and detached from glasses and that is attached so as to cover at least the eye with a portion having an infrared reflection function.
  • differences from the embodiment 21 will be mainly described.
  • FIG. 33 is a perspective view showing a state in which the face detection preventing tool 1A13 according to the twenty-third embodiment is mounted on the spectacle lens 6A.
  • a transparent plate 1A12 having an infrared reflection function as a whole is attached to the portion of the spectacle lens 6A that covers the eyes.
  • the portion of the spectacle lens 6A that covers the eyes has an infrared reflection function.
  • the transparent plate 1A13 is attached so that the portion (which functions as the infrared reflection filter 4A12) is located. That is, the transparent part 1G exists in the part away from the eyes of the transparent plate.
  • the face detection preventive tool 1A13 is partially composed of a spectacle lens-shaped transparent plate having an infrared reflection function, and a spectacle lens-shaped glass plate having an infrared reflection filter 4A12 as a member covering the eye is supported by the frame.
  • the frame is attached to the frame 2A of the glasses 6 with a hinge 5A12 as a mounting portion.
  • the glass plate transparent plate 1A13 is placed in front of the spectacle lens 6A.
  • the wearer views the scenery through the spectacle lens 6A and the transparent plate 1A13.
  • the face detection preventing tool 1A13 is attached to the glasses, the eye is covered with a portion having the infrared reflection function of the transparent plate (functioning as the infrared reflection filter 4A12).
  • 11 is highly evaluated for luminance. As a result, the face discriminator 11 has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 24 shows an example of a transparent plate that is a face detection preventing tool that can be attached to and detached from goggles and that is attached so that a portion having an infrared reflection function is disposed at least at a position covering the eyes.
  • differences from the twenty-second embodiment will be mainly described.
  • FIG. 34 is a perspective view showing a state in which the face detection preventing tool 1B13 in the embodiment 24 is attached to the goggles 7.
  • a transparent plate having an infrared reflection function as a whole is attached to the part of the goggle plate 7B covering the eyes.
  • the part of the goggle plate 7B covering the eyes (the infrared reflection filter).
  • the transparent plate 1B13 is attached so that (which functions as 4B12) is positioned. That is, the transparent part 1G exists in the part away from the eyes of the transparent plate 1B13.
  • the face detection preventing tool 1B13 is formed of a transparent plate partially having an infrared reflection function.
  • the transparent plate partially has an infrared reflection filter 4B12 as a member.
  • one end of the transparent plate 1B13 is bent into a U shape, and the goggle plate 7B is fitted into the U-shaped groove (mounting portion 5B12) during mounting.
  • the wearer views the scenery through the goggle board 7B and the transparent board 1B13.
  • the face detection preventing tool 1B13 is attached to the goggles 7, the eye is covered with the portion having the infrared reflection function (functioning as the infrared reflection filter 4B12) of the transparent plate 1B13.
  • the discriminator 11 evaluates the brightness highly. As a result, the face discriminator 11 has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 25 shows an example of a transparent plate that has an infrared absorption function as a whole, which is attached to at least a position covering the nose muscles, as a face detection preventing tool that can be attached to and detached from goggles. Differences from the ninth embodiment will be mainly described.
  • FIG. 35 is a perspective view showing a state in which the face detection preventing tool 1B14 in the embodiment 25 is attached to the goggles 7.
  • the entire goggle plate 3B constitutes the infrared absorption filter 4B0, but in this example, the portion of the goggle plate 7B covering the nose has an infrared absorption function as a face detection prevention tool (infrared absorption).
  • a transparent plate 1B14 (which functions as a filter 4B12) is attached.
  • the face detection preventing tool 1B14 is formed of a transparent plate having an infrared absorption function.
  • the transparent plate has an infrared absorption filter 4B12 as a member.
  • one end of the transparent plate 1B14 is bent into a U shape, and the goggle plate 7B is fitted into the U-shaped groove (mounting portion 5B12) at the time of mounting.
  • the entire nose is preferably covered with the infrared absorption filter 4B12, but most (70% or more) may be covered.
  • the face detection preventing tool 1B14 is attached to the goggles, most of the nose muscles are covered with the transparent plate 1B14 having an infrared absorption function (functioning as the infrared absorption filter 4B12).
  • the discriminator 11 evaluates the luminance to be low. As a result, the face discriminator 11 has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 26 shows an example of a transparent plate that is a face detection preventing tool that can be attached to and detached from goggles and that is attached so as to cover at least a nose muscle with a portion having an infrared absorption function. Differences from the twenty-fifth embodiment will be mainly described.
  • FIG. 36 is a perspective view showing a state where the face detection preventing tool 1B15 according to the twenty-sixth embodiment is attached to the goggles 7.
  • the entire face detection preventive tool 1B14 constitutes the infrared absorption filter 4B12.
  • the transparent plate so as to cover the nose of the goggle plate 7B with the portion (4B12) having the infrared absorption function. 1B15 is attached. That is, the transparent part 1G exists in the part away from the nose of the transparent plate.
  • the face detection preventing tool 1B15 is formed of a transparent plate having an infrared absorption function in part.
  • the transparent plate partially includes an infrared absorption filter 4B12 as a member.
  • one end of the transparent plate 1B15 is bent into a U-shape, and the goggle plate 7B is fitted into the U-shaped groove when mounted.
  • the entire nose is preferably covered with the infrared absorption filter 4B12, but most (70% or more) may be covered.
  • the face detection preventing device 1B15 is attached to the goggles 7, the nose muscle portion is covered with the portion having the infrared absorption function (functioning as the infrared absorption filter 4B12) of the transparent plate 1B15. Is evaluated as low in luminance by the face discriminator 11. As a result, the face discriminator 11 has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 27 shows an example of a spectacle-type face detection prevention device in which a louver glass plate that absorbs sunlight is used for the entire spectacle lens. Differences from the first embodiment will be mainly described.
  • FIG. 37 is a perspective view of the face detection preventing tool 1A16 according to the twenty-seventh embodiment.
  • the entire spectacle lens portion 3A constitutes the infrared reflection filter 4A.
  • the entire spectacle lens portion 3A is composed of the louver glass plate 4A16.
  • linear solar absorbers having a width h in the thickness direction
  • the interval d is set to 0.1 to several mm.
  • a carbon ribbon can be used as the solar absorber.
  • the face detection preventing tool 1B16 is a spectacle type, and the spectacle lens unit 3A as a member has a louver glass plate 4A16.
  • a plastic plate may be used instead of the glass plate.
  • the direction of the linear absorber may be any direction as long as it is parallel to the surface of the louver glass plate 4A16 as a member.
  • the face detection preventing tool 1A16 when the face detection preventing tool 1A16 is attached, the eye part is covered with the louver glass plate 4A16, so that the brightness of the eye part is evaluated by the face discriminator 11 in a captured image taken from an oblique direction. .
  • the face discriminator 11 cannot recognize the face when black parallel lines are included in a photographed image photographed obliquely.
  • the face discriminator 11 has an effect that the face of the person cannot be detected even when a photographed image photographed from an oblique direction flows out on the Internet.
  • Example 28 is an example of a goggle-type face detection prevention device in which sunlight absorbing louver glass is used for the entire goggle. Differences from the second embodiment will be mainly described.
  • FIG. 38 is a perspective view of the face detection preventing tool 1B16 according to the twenty-eighth embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B.
  • the entire goggles plate 3B is composed of the louver glass plate 4B16.
  • the louver glass plate 4B16 is used, what is beyond the louver louver glass plate 4B16 can be seen from the front, but it cannot be seen from an oblique direction. As the inclination increases, the portion that cannot be seen increases and becomes invisible at a predetermined angle, for example, 60 degrees or more.
  • the face detection preventing tool 1B16 is a goggle type, and the goggle plate 3B as a member has a louver glass plate 4B16.
  • a plastic plate may be used instead of the glass plate.
  • the direction of the linear absorber may be any direction as long as it is parallel to the surface of the louver glass plate 4B16 as a member.
  • the face detection preventing tool 1B16 is attached, the eye part is covered with the louver glass plate 4B16, so that the brightness of the eye part is evaluated by the face discriminator 11 in a photographed image taken from an oblique direction.
  • the face discriminator 11 cannot recognize the face when black parallel lines are included in a photographed image photographed obliquely.
  • the face discriminator 11 has an effect that the face of the person cannot be detected even when a photographed image photographed from an oblique direction flows out on the Internet.
  • Example 29 shows an example of a sheet-like face detection prevention device in which a louver sheet that absorbs sunlight is attached to at least a portion of eyeglasses covering the eyes.
  • a louver sheet that absorbs sunlight is attached to at least a portion of eyeglasses covering the eyes.
  • FIG. 39 is a perspective view showing a state where the face detection preventing tool 1A17 in Example 29 is attached to the spectacle lens 6A.
  • a louver glass plate 4A16 that absorbs sunlight is used for the entire spectacle lens portion 6A.
  • a louver sheet 4A17 that absorbs sunlight is attached to a portion of the spectacle lens 6A that covers the eyes.
  • the face detection preventing tool 1A17 has a louver sheet 4A17 as a member and an adhesive layer 5A10 on the back surface of the sheet as a mounting portion.
  • the louver sheet 4A17 is typically a plastic film. Even in this case, when the face detection preventive tool 1A17 is attached to the glasses, the eyes are covered with the louver sheet 4A17 that absorbs sunlight.
  • the face discriminator 11 cannot recognize the face when dark parallel lines enter a photographed image photographed from an oblique direction. As a result, there is an effect that the face discriminator cannot detect a person's face even when a photographed image photographed from an oblique direction flows out on the Internet.
  • Example 30 is an example of a face detection preventing tool that can be attached to and detached from goggles, and a solar-absorbing louver sheet is pasted at a position that covers at least the eyes of the goggles.
  • a solar-absorbing louver sheet is pasted at a position that covers at least the eyes of the goggles.
  • FIG. 40 is a perspective view showing a state in which the face detection preventing tool 1B17 in the embodiment 30 is stuck on the goggle plate 7B.
  • louver glass 4B16 that absorbs sunlight is used for the entire goggle plate 3B, but in this example, a louver sheet 4B17 that absorbs sunlight is attached to a position covering the eyes of the goggle plate 7B.
  • the face detection preventing tool 1B17 has a louver sheet 4B17 as a member and an adhesive layer 5B10 on the back of the sheet as a mounting portion.
  • the louver sheet 4B17 is usually a plastic film.
  • the face detection preventive tool 1B17 when the face detection preventive tool 1B17 is attached to the goggles 7, the eyes are covered with the louver sheet 4B17 that absorbs sunlight. Is rated low. Specifically, the face discriminator 11 cannot recognize the face when dark parallel lines enter a photographed image photographed from an oblique direction. As a result, there is an effect that the face discriminator cannot detect a person's face even when a photographed image photographed from an oblique direction flows out on the Internet.
  • Example 31 shows an example of a goggle-type face detection prevention device in which retroreflective beads are used in portions other than the position covering the eyes of the goggles. Differences from the second embodiment will be mainly described.
  • FIG. 41 is a perspective view of the face detection preventing tool 1B18 according to the 31st embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B.
  • retroreflective beads or irregular reflection irregularities
  • the face detection preventing tool 1B18 has a region 4B18 to which retroreflective beads as members are attached.
  • the diameter of the retroreflective beads is, for example, several ⁇ m to several mm.
  • the region 4B18 to which the retroreflective beads are attached may be embedded, for example, with retroreflective beads scattered in the goggle plate 3B, or a retroreflective sheet on which the retroreflective beads are scattered is pasted on the surface of the goggle plate 3B. Alternatively, it may be mixed with paint and applied and fixed.
  • Retroreflective beads reflect light in the incident direction.
  • the camera flash when used, strong light returns to the camera.
  • the luminance is highly evaluated, and the luminance of the face is not correctly recognized.
  • the face discriminator 11 when a large number of retroreflective beads are used, there are many portions where the brightness of the face is not correctly recognized, and when the beads are integrated, there are many places where the brightness is highly evaluated by the face discriminator 11 in the photographed image.
  • the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet. Since the retroreflective beads are not disposed in the eye portion (covered with the transparent region 3G), the person wearing the face detection preventing tool 1B18 can see the same scenery as when not wearing it.
  • Example 32 shows an example of a goggle-type face detection prevention device in which mirror ball-shaped beads are used in portions other than the position covering the eyes of the goggles. Differences from the second embodiment will be mainly described.
  • FIG. 42 is a perspective view of the face detection preventing tool 1B19 according to the thirty-second embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B.
  • minute mirror ball beads are formed on portions other than the portion covering the eyes of the goggle plate 3B.
  • the face detection preventing tool 1B19 has a region 4B19 to which minute mirror ball beads as members are attached.
  • the diameter of the mirror ball beads is, for example, several ⁇ m to several mm.
  • the minute mirror ball beads may be embedded in the goggle plate 3B, or a sheet on which the minute mirror ball beads are dispersed is placed on the goggle plate 3B. It may be affixed to the surface, or may be mixed with a paint and applied and fixed.
  • Hemispherical beads reflect light from the surface of the hemisphere at a wide angle. Therefore, at a position where hemispherical beads are present, the luminance is highly evaluated, and the luminance of the face is not correctly recognized. When a large number of hemispherical beads are used, there are many portions where the luminance of the face is not correctly recognized. When the hemispherical beads are integrated, there are many places where the luminance is highly evaluated by the face discriminator 11 in the photographed image. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet. Since the hemispherical beads are not arranged in the eye part (covered with the transparent region 3G), a person wearing the face detection preventing tool 1B19 can see the same scenery as when not wearing it.
  • Example 33 shows an example of a goggle-type face detection preventing device in which a large number of infrared reflection filters and infrared absorption filters are scattered in the goggles.
  • differences from the second embodiment will be mainly described.
  • FIG. 43 is a perspective view of the face detection preventing tool 1B20 in the embodiment 33.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B.
  • a large number of infrared reflection filters 4A2 and infrared absorption filters 4B2 are scattered on the goggles plate 3B.
  • the face detection preventing tool 1B20 includes a goggle plate 3B as a member and a temple 5B as a mounting portion.
  • the portion having the infrared reflection filter 4A2 is evaluated to have high luminance by the face discriminator 11, and the portion having the infrared absorption filter 4B2 is evaluated to have low luminance by the face discriminator 11. As a result, the brightness of the face is not correctly recognized.
  • infrared reflection filters 4A2 and infrared absorption filters 4B2 When a large number of infrared reflection filters 4A2 and infrared absorption filters 4B2 are used, there are many portions where the brightness of the face is not correctly recognized, and when integrated, there are many places where the brightness is evaluated high or low by the face discriminator 11 in the photographed image. Become. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • a region where the infrared reflection filter 4A2 and the infrared absorption filter 4B2 are not disposed is a transparent region 3G. Even if the infrared reflection filter 4A2 and the infrared absorption filter 4B2 are scattered except for the position covering the eyes, the effect is obtained if there are many.
  • Example 34 shows an example of a spectacle-type face detection preventing device, in which the lower half of the spectacle lens section that crosses the eye functions as an infrared reflection filter.
  • FIG. 44 is a perspective view of the face detection preventing tool 1A21 according to the 34th embodiment.
  • the entire spectacle lens portion 3A constitutes the infrared reflection filter 4A, but in this embodiment, the infrared reflection filter 4A exists in the lower half of the portion of the spectacle lens portion 3A that crosses the eye.
  • the face detection preventing tool 1A21 has a spectacle lens part 3A as a member and a temple 5A as a mounting part. In this case, when the face detection preventing tool 1A21 is worn, the boundary of the infrared reflection filter 4A crosses the eye.
  • the portion 3G without the upper infrared reflection filter 4A is transparent and is evaluated by the face discriminator 11 to have the same luminance as before the attachment, but the portion with the lower infrared reflection filter 4A has the luminance by the face discriminator 11. Highly appreciated. Even when the boundary corresponds to the lower end of the eye, the luminance of the low luminance portion immediately below the eye is highly evaluated. As a result, the brightness evaluation changes, so that the face discriminator cannot detect the face of a person even when a photographed image flows on the Internet. If a frame 2A (particularly made of metal) is provided at a position covering the eyebrows as a modified example, the brightness of the portion covering the eyebrows is also highly evaluated by the face discriminator 11 due to light reflection by the frame 2A. Make face detection more difficult.
  • Example 35 shows an example of a goggle-type face detection prevention device in which the lower half of the goggle plate that crosses the eye functions as an infrared reflection filter.
  • FIG. 45 is a perspective view of the face detection preventing tool 1B21 according to the 35th embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B, but in this embodiment, the infrared reflection filter 4B is present in the lower half of the portion of the goggle plate 3B that crosses the eye.
  • the face detection preventing tool 1B21 includes a goggle plate 3B as a member and a temple 5B as a mounting portion. In this case, when the face detection preventing tool 1B21 is worn, the boundary of the infrared reflection filter 4B crosses the eye.
  • the portion 3G without the upper infrared reflection filter 4B is transparent, and is evaluated by the face discriminator 11 to have the same luminance as before mounting, and the portion having the lower infrared reflection filter 4B is evaluated by the face discriminator 11 to have high luminance. Is done.
  • the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • an infrared reflection filter is further provided at a position covering the eyebrows above the portion 3G where the upper infrared reflection filter 4B is not provided, the brightness of the portion covering the eyebrows is also highly evaluated by the face discriminator 11, and the face discriminator. 11 makes the detection of a human face more difficult.
  • Example 36 shows an example of a spectacle-type face detection prevention device in which the entire spectacle lens unit functions as an ultraviolet reflection filter.
  • the entire spectacle lens unit functions as an ultraviolet reflection filter.
  • FIG. 46 is a perspective view of the face detection preventing tool 1A22 according to the 36th embodiment.
  • the entire spectacle lens unit 3A constitutes the infrared reflection filter 4A, but in this example, the entire spectacle lens unit 3A constitutes the ultraviolet reflection filter 4A22. Since the ultraviolet rays are not perceived by the person but are exposed to the camera, the face discriminator 11 highly evaluates the luminance of the portion where the ultraviolet reflection filter 4A22 is arranged as in the case of the infrared rays. In this case, when the face detection preventive tool 1A22 is attached, the periphery of the eye is covered with the ultraviolet reflection filter 4A22, so that the brightness of the portion covering the eye in the photographed image is highly evaluated by the face discriminator 11. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet. Moreover, since no light source is used, natural communication is possible.
  • Example 37 shows an example of a goggle-type face detection prevention device in which the entire goggle functions as an ultraviolet reflection filter. Here, differences from the second embodiment will be mainly described.
  • FIG. 47 is a perspective view of the face detection preventing tool 1B22 according to the thirty-seventh embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B.
  • the entire goggles plate 3B constitutes the ultraviolet reflection filter 4B22. Since the ultraviolet rays are not perceived by the person but the camera is sensitized, the face discriminator 11 evaluates the luminance of the portion where the ultraviolet reflection filter 4B22 is arranged as in the case of the infrared rays. In this case, when the face detection preventing tool 1B22 is attached, the periphery of the eye is covered with the ultraviolet reflection filter 4B22, and thus the face discriminator 11 evaluates the luminance of the portion covering the eye to be high. As a result, the face discriminator 11 has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 38 shows an example of a spectacle-type face detection prevention device in which a portion of the spectacle lens portion covering the eye functions as an ultraviolet reflection filter.
  • a portion of the spectacle lens portion covering the eye functions as an ultraviolet reflection filter.
  • FIG. 48 is a perspective view of the face detection preventing tool 1A23 in the embodiment 38.
  • the entire spectacle lens unit 3A constitutes the ultraviolet reflection filter 4A22.
  • the portion of the spectacle lens unit 3A that covers the eyes constitutes the ultraviolet reflection filter 4A22. That is, there is a portion 3G made of transparent glass or transparent plastic in a portion away from the eye of the spectacle lens portion 3A.
  • the face detection preventive tool 1A23 is mounted, the eye part is covered with the region constituting the ultraviolet reflection filter 4A22 of the spectacle lens unit 3A, so that the eye part has a high luminance by the face discriminator 11 in the photographed image. Be evaluated.
  • the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 39 shows an example of a goggle-type face detection preventive device in which a part of the goggles covering the eyes functions as an ultraviolet reflection filter.
  • Example 37 differences from Example 37 will be mainly described.
  • FIG. 49 is a perspective view of the face detection preventing tool 1B23 according to the 39th embodiment.
  • the entire goggle plate 3B constitutes the ultraviolet reflection filter 4B22.
  • the portion of the goggle plate 3B that covers the eyes constitutes the ultraviolet reflection filter 4B22. That is, a part 3G made of transparent glass or transparent plastic exists in a part of the goggle plate 3B away from the eyes. Even in this case, when the face detection preventive tool 1B23 is mounted, the eye part is covered with the region constituting the ultraviolet reflection filter 4B22 of the goggle plate 3B. Is done. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 40 shows an example of a visor-type face detection prevention device in which a portion covering the upper half of the face functions as an infrared reflection filter.
  • differences from the second embodiment will be mainly described.
  • FIG. 50 is a perspective view of the face detection preventing tool 1C24 according to the fortieth embodiment.
  • the entire goggle plate 3B constitutes the infrared reflection filter 4B.
  • the visor plate 3C as a member protrudes diagonally forward of the face and covers the upper half of the face when viewed from the front. 4C1 is configured. Further, the belt-like portion 5C surrounding the head constitutes the mounting portion.
  • a transparent plate including all or a part of which is partially translucent
  • a glass plate is a member arranged so as to face both faces of a person.
  • the goggle type when worn is in contact with a person's face, and the visor type is in contact with the head but worn away from the face. Further, the goggle type includes those in which the space between the transparent plate and the face is not sealed. Even in this case, when the face detection preventing tool 1C24 is attached, the upper half of the face is covered with the region constituting the infrared reflection filter 4C1, and thus the eye part in the photographed image is highly evaluated by the face discriminator. As a result, the face discriminator has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Example 41 shows an example of a visor-type face detection prevention device in which the portion covering the eyes functions as an infrared reflection filter.
  • the portion covering the eyes functions as an infrared reflection filter.
  • FIG. 51 is a perspective view of the face detection preventing tool 1C25 in the embodiment 41.
  • the entire goggle plate 3C constitutes the infrared reflection filter 4C1
  • the visor plate 3C as a member protrudes diagonally forward of the face and covers the upper half of the face when viewed from the front.
  • the part which covers eyes among 3C comprises the infrared reflective filter 4C2.
  • the belt-like portion 5C surrounding the head constitutes the mounting portion.
  • the face discriminator 11 has an effect that the face of the person cannot be detected even when the photographed image flows out on the Internet.
  • Examples 9, 25, and 26 have been described as typical examples using an infrared absorption filter, but embodiments corresponding to Examples 3 to 7 and Examples 17 to 18 are also possible. It is.
  • the examples 36 and 38 have been described as typical examples using the ultraviolet reflection / absorption filter, but modes corresponding to the examples 3 to 26 are also possible.
  • examples using infrared rays and ultraviolet rays have been described. However, red light and infrared rays + red light may be used instead of infrared rays. Purple light or / and blue light, ultraviolet rays may be used instead of ultraviolet rays. + Purple light or / and blue light may be used.
  • Example 31 an example using retroreflective beads is described in Example 31 and an example using a minute mirror ball is described in Example 32, irregular reflection may be used instead.
  • a mask that hides the nose and mouth and transmits green light and absorbs infrared rays or the like may be used as a face detection prevention tool.
  • the example which uses light reflection and light absorption was shown in the above Example, the member which has white or the color with high brightness near white as a high-intensity increase member which changes the said brightness
  • a member having a black color or a color with low brightness close to black may be used as the low brightness member.
  • a sheet that transmits green light and absorbs infrared rays or the like may be pasted on the cheek or the like as a face detection prevention tool.
  • the reflection / absorption filter covers the eyes or nose muscles.
  • glasses, goggles and visors can be designed in a wide variety of ways.
  • the face discriminator 11 used for the determination of the face or the non-face stores the reinforcement learning of the discrimination result for the face detection preventive device described in the above embodiment, thereby eliminating the effect of the face discriminator.
  • the constituent conditions of the detection prevention tool can be clarified gradually.
  • the present invention is used for a face detection prevention device that prevents privacy infringement due to voyeurism or camera reflection.
  • Face detection prevention device 1A1 to 1A4, 1A7 to 1A9, 1A21 to 1A23 Face detection prevention device (glasses type) 1A10 to 1A11 Face detection prevention device (sheet type) 1B1 ⁇ 1B9, 1B20 ⁇ 1B23 Face detection preventer (goggles type) 1B10-1B11 Face detection prevention device (sheet-like) 1A12 ⁇ 1A13, 1B12 ⁇ 1B15 Face detection preventer (plate) 1A16 ⁇ 1A17, 1B16 ⁇ 1B17 Face detection preventer (use louver) 1B18 Face detection preventive tool (using retroreflective beads) 1B19 Face detection preventive tool (using mirror ball beads) 1C24, 1C25 Face detection prevention device (visor type) 1G transparent part 2A support part (frame) 2B support part 3A member (glasses lens part) 3B material (goggles board) 3G transparent part 4A, 4A1-4A4, 4B, 4B1, 4B3, 4B4, 4C1, 4C2 High brightness

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Image Processing (AREA)
  • Eyeglasses (AREA)
  • Optical Filters (AREA)

Abstract

La présente invention concerne un article vestimentaire de protection de la confidentialité, qui protège la confidentialité et ne gêne pas la communication naturelle. L'article anti-détection faciale (1A) selon la présente invention se porte sur le visage d'une personne et, par rapport à un dispositif de reconnaissance faciale utilisant une évaluation de luminosité d'une région (8) de détection dans une image capturée par caméra pour détecter les visages de personnes figurant sur l'image capturée, modifie l'évaluation de la luminosité par le dispositif (11) de reconnaissance faciale pour la région (8) de détection de l'image. L'article anti-détection faciale comprend un élément (3A) disposé face à une région particulière du visage de la personne et une section (5) de montage destinée à monter l'élément (3A) sur le visage de la personne. L'élément (3A) comprend: un élément (4A) d'accroissement de luminosité destiné à accroître la luminosité, ledit élément (4A) d'accroissement de luminosité étant positionné au niveau de la région particulière à un emplacement facial où la luminosité dans la région (8) de détection est évaluée comme étant faible; ou un élément de réduction de luminosité destiné à réduire la luminosité, ledit élément de réduction de luminosité étant placé au niveau de la région particulière à un emplacement facial où la luminosité dans la région de détection est évaluée comme étant forte.
PCT/JP2013/079158 2012-10-29 2013-10-28 Article anti-détection faciale WO2014069412A1 (fr)

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JP2016218783A (ja) * 2015-05-21 2016-12-22 日本電気通信システム株式会社 生体情報変更フィルタ、プログラムおよび生体認証方法
WO2018066467A1 (fr) * 2016-10-03 2018-04-12 大学共同利用機関法人情報・システム研究機構 Article vestimentaire et procédé pour empêcher la photographie secrète de caractéristiques biométriques
WO2018159037A1 (fr) * 2017-03-01 2018-09-07 オムロン株式会社 Dispositif de détection faciale et procédé et programme de commande associés
JP2020170548A (ja) * 2020-07-09 2020-10-15 日本電気株式会社 生体情報変更部材、生体情報変更方法、および生体情報変更プログラム

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JP2006155109A (ja) * 2004-11-26 2006-06-15 Yec Co Ltd 映像処理装置
JP2012119912A (ja) * 2010-11-30 2012-06-21 Fujifilm Corp 撮影装置、画像処理装置、撮影方法及び画像処理方法

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US5625427A (en) * 1993-12-15 1997-04-29 Corning Incorporated Ophthalmic lens
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JP2005002044A (ja) * 2003-06-11 2005-01-06 Mitsubishi Gas Chem Co Inc 新規なアミン化合物およびその製造方法
JP2006155109A (ja) * 2004-11-26 2006-06-15 Yec Co Ltd 映像処理装置
JP2012119912A (ja) * 2010-11-30 2012-06-21 Fujifilm Corp 撮影装置、画像処理装置、撮影方法及び画像処理方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016218783A (ja) * 2015-05-21 2016-12-22 日本電気通信システム株式会社 生体情報変更フィルタ、プログラムおよび生体認証方法
WO2018066467A1 (fr) * 2016-10-03 2018-04-12 大学共同利用機関法人情報・システム研究機構 Article vestimentaire et procédé pour empêcher la photographie secrète de caractéristiques biométriques
JPWO2018066467A1 (ja) * 2016-10-03 2019-07-18 大学共同利用機関法人情報・システム研究機構 生体特徴盗撮防止装着具及び盗撮防止方法
JP7056933B2 (ja) 2016-10-03 2022-04-19 大学共同利用機関法人情報・システム研究機構 生体特徴盗撮防止装着具及び盗撮防止方法
WO2018159037A1 (fr) * 2017-03-01 2018-09-07 オムロン株式会社 Dispositif de détection faciale et procédé et programme de commande associés
JP2020170548A (ja) * 2020-07-09 2020-10-15 日本電気株式会社 生体情報変更部材、生体情報変更方法、および生体情報変更プログラム
JP7143870B2 (ja) 2020-07-09 2022-09-29 日本電気株式会社 生体情報変更プログラム

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