WO2007108070A1 - Dispositif d'acquisition d'images video - Google Patents

Dispositif d'acquisition d'images video Download PDF

Info

Publication number
WO2007108070A1
WO2007108070A1 PCT/JP2006/305416 JP2006305416W WO2007108070A1 WO 2007108070 A1 WO2007108070 A1 WO 2007108070A1 JP 2006305416 W JP2006305416 W JP 2006305416W WO 2007108070 A1 WO2007108070 A1 WO 2007108070A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
illumination
image
frequency band
directions
Prior art date
Application number
PCT/JP2006/305416
Other languages
English (en)
Japanese (ja)
Inventor
Hironori Yokoi
Osafumi Nakayama
Morito Shiohara
Original Assignee
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2006/305416 priority Critical patent/WO2007108070A1/fr
Publication of WO2007108070A1 publication Critical patent/WO2007108070A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means

Definitions

  • the present invention relates to an image acquisition apparatus that illuminates a subject from at least three or more directions, captures the subject from a predetermined same direction, and acquires a plurality of images having different illumination directions.
  • an automatic monitoring device having a function of automatically recognizing a suspicious person from an image is used in order to reduce an operator's burden and improve reliability.
  • What is required of the automatic monitoring device is a high identification performance that can be used to distinguish whether or not a person is a suspicious person.
  • it is necessary to obtain an image in which the subject is illuminated under specific lighting conditions for example, an image in which the subject is uniformly illuminated
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2002-27316
  • An object of the present invention is to provide an image acquisition device capable of acquiring a plurality of images having different illumination directions.
  • the invention according to claim 1 illuminates the subject from at least three or more directions and images the subject from a predetermined same direction.
  • An image acquisition device for acquiring a plurality of images with different illumination directions, wherein the illuminating means illuminates the subject simultaneously with illumination light having mutually different frequency bands for each of the plurality of directions, and is illuminated by the illumination means
  • an imaging unit that captures an image of a subject and acquires an image of reflected light for each frequency band illuminated in each of the plurality of directions.
  • the illuminating means includes one or more light source means for irradiating light in a specific frequency band for each of the plurality of directions, and the plurality of the plurality of light source means.
  • a filter that transmits only light in different frequency bands for each of the plurality of directions is disposed on the front surface of the light source means.
  • the illumination light emitted from one or more of the light source means for each direction is transmitted, so that the subject is illuminated with illumination light in different frequency bands from the plurality of directions at the same time.
  • the imaging unit is illuminated in any one of the plurality of directions different from each other between adjacent light receiving elements on a single plate type light receiving surface.
  • a filter that transmits only the reflected light in the frequency band is provided so as to cover the light receiving element for each light receiving element, and the reflected light that has passed through the filter for each light receiving element is received by the light receiving surface, and reflected in each frequency band. It is characterized by acquiring images consisting of light.
  • the imaging unit can uniformly cover all the light receiving elements on a single plate type light receiving surface, and is illuminated in the plurality of directions.
  • Each of the frequency bands has a filter that transmits only the reflected light in each frequency band, and the filter for each frequency band is switched so as to cover the light receiving surface in order, and the reflection that has passed through each filter in accordance with the switching.
  • Light is received by the light receiving surface, and an image composed of reflected light of each frequency band is acquired.
  • the imaging unit includes a spectroscopic unit that splits the reflected light of the object for each frequency band illuminated in each direction, The reflected light of each frequency band dispersed by the spectroscopic means is received by a light receiving surface provided for each frequency band, and an image composed of the reflected light of each frequency band is acquired.
  • the invention according to claim 6 further includes an arbitrary illumination image generation means for generating an arbitrary illumination image by synthesizing the images of the respective frequency bands acquired by the imaging means in the above invention. It is characterized by that.
  • the arbitrary illumination image generation unit is configured to determine the illumination light from the illumination unit from the images of the respective frequency bands acquired by the imaging unit. It is characterized by synthesizing images in each frequency band after removing components due to different ambient ambient light.
  • the subject is simultaneously illuminated with illumination light having different frequency bands in each direction from at least three or more directions, and the illuminated subject is imaged to obtain a plurality of Since an image of reflected light power for each frequency band illuminated in each direction is acquired, there is no movement in the subject that does not need to be shot multiple times by switching the illumination direction.Short, time, or surrounding light and dark conditions As a result of taking pictures in a short time, even if the subject and ambient lighting fluctuate rapidly, multiple images (multiple images with different illumination directions) that are useful for generating arbitrary illumination images can be acquired. Is possible.
  • the reflection characteristic of the object is relatively low in the frequency band. Even in cases where the characteristics are significantly different, it is possible to obtain a clear image of the subject by setting the frequency band of the illumination light.
  • each light receiving element constituting the single plate type light receiving surface is individually covered with a filter, and the adjacent light receiving elements are arranged in each direction in different frequency bands. Only the reflected light in the frequency band illuminated by it is transmitted, and the reflected light that has passed through the filter for each light receiving element is received by the light receiving surface, and an image composed of the reflected light in each frequency band is acquired. As a result of capturing reflected images on the same light-receiving surface for each frequency band for each direction, it is possible to acquire images that maintain the simultaneity that is ideal for generating arbitrary illumination images.
  • the entire single-plate light-receiving surface is covered with a filter that transmits only the reflected light in the frequency band illuminated in each direction, and the filter for each frequency band is provided.
  • the filter for each frequency band is provided.
  • a spectroscopic unit that splits the reflected light of the subject for each illuminated frequency band, and the reflected light split by the spectroscopic unit is provided for each frequency band.
  • the light receiving surface receives the light and acquires an image consisting of the reflected light in each frequency band.
  • an arbitrary illumination image is obtained. Images can also be acquired.
  • a surrounding external light component is mixed in an image in each illumination direction over a wide frequency band.
  • a clear image of the subject can be acquired.
  • FIG. 1 is a diagram showing an overall configuration of an arbitrary illumination image generation device.
  • FIG. 2 is a block diagram showing a configuration of an arbitrary illumination image generation device.
  • FIG. 3 is a diagram for explaining the characteristics of a filter.
  • FIG. 4 is a diagram for explaining a configuration of an imaging unit.
  • FIG. 5 is a flowchart showing a flow of arbitrary illumination image generation processing.
  • FIG. 6 is a diagram for explaining illumination light having a comb-shaped frequency characteristic.
  • FIG. 7 is a diagram showing a configuration of a compact light source integrated illumination unit (one frequency band for each direction) according to Example 2.
  • FIG. 8 is a diagram showing a configuration of a compact light source integrated illumination unit (a plurality of frequency bands for each direction) according to Example 2.
  • FIG. 9 is a diagram showing a configuration of a single plate type and filter switching type imaging unit.
  • FIG. 10 is a diagram showing a configuration of a double-plate and spectral imaging unit.
  • FIG. 11 is a diagram illustrating a configuration of an imaging unit for removing an external light component.
  • FIG. 12 is a diagram for explaining external light component removal.
  • FIG. 1 is a diagram illustrating the overall configuration of the arbitrary illumination image generation device according to the first embodiment.
  • the arbitrary illumination image generation device is configured by connecting an illumination unit 10, an imaging unit 20, and an image processing unit 30.
  • the outline of this arbitrary illumination image generation device will be described.
  • the illumination unit 10 illuminates the subject from at least three or more directions, and the imaging unit 20 images the subject from a predetermined same direction. A plurality of different images are acquired, the plurality of images are combined, and an arbitrary illumination image is generated by the image processing unit 30.
  • this arbitrary illumination image generation device acquires a plurality of images (a plurality of images having different illumination directions) that are useful for generating an arbitrary illumination image even in an environment where the subject and ambient illumination fluctuate drastically.
  • the main feature is that an image can be generated.
  • the three illumination units 10 are arranged in each direction. Illuminate subject 1 simultaneously with illumination light in different frequency bands. Specifically, as shown in Fig. 1, illumination light in three different directions and different frequency bands for each direction (that is, light 10a represented by a dotted arrow, light 10b represented by a solid arrow, and a wavy arrow Illuminate subject 1 simultaneously with light 10c).
  • the imaging unit 20 captures the subject 1 illuminated by the three illumination units 10, and obtains an image having reflected light power in each frequency band for each frequency band illuminated in each of a plurality of directions. To do. Specifically, as shown in FIG. 1, among the irradiation lights from the three illumination units 10, the reflected light lla of the subject 1 by the irradiation light 10a, the reflected light 1 lb of the subject 1 by the irradiation light 10b, and the irradiation light The reflected light 11c of the subject 1 by 10c is captured, and an image 20a, an image 20b, and an image 20c made of each reflected light are acquired.
  • the image processing unit 30 combines the images of the respective frequency bands acquired by the imaging unit 20, and generates an arbitrary illumination image. Specifically, as shown in FIG. 1, the three images acquired by the imaging unit 20, that is, the image 20a, the image 20b, and the image 20c are respectively weighted and combined to generate an arbitrary illumination image 30a.
  • the arbitrary illumination image generation device changes in the lighting condition for a short period of time when there is no movement in the subject that does not need to be shot multiple times by switching the illumination direction, or in the surrounding light and dark conditions.
  • multiple images multiple images with different illumination directions
  • an arbitrary illumination image can be generated.
  • an image necessary for generating the arbitrary illumination image can be acquired at a high speed (for the illumination direction, that is, three times or more high speed) to generate an arbitrary illumination image.
  • a high speed for the illumination direction, that is, three times or more high speed
  • FIG. 2 is a block diagram illustrating the configuration of the arbitrary illumination image generation device according to the first embodiment.
  • the arbitrary illumination image generation device includes an image processing unit 30, three illumination units 10, an imaging unit 20, and a reception unit 40.
  • the illumination unit 10 corresponds to the “illumination unit” described in the claims
  • the imaging unit 20 corresponds to the “imaging unit”.
  • the image processing unit 30 includes therein a storage unit 31, an arbitrary illumination image storage unit 34, an illumination instruction unit 35, an imaging instruction unit 36, and a composition unit 37.
  • the synthesizing unit 37 corresponds to “arbitrary illumination image generating means” described in the claims.
  • the storage unit 31 is a storage unit for storing data and programs necessary for various processes by the synthesis unit 37. As shown in FIG. 2, the storage unit 31 is particularly closely related to the present invention. An image storage unit 32 and a setting storage unit 33 are provided.
  • the image storage unit 32 is a storage unit that stores a plurality of images necessary for generating an arbitrary illumination image. After obtaining a plurality of images necessary for image generation, the images are received and stored.
  • the setting storage unit 33 is a storage unit that stores information related to generation of an arbitrary illumination image by the combining unit 37. Specifically, the reception unit 40 described later weights each image of the operator power. After receiving a setting value that is the value of, store the setting value
  • the arbitrary illumination image storage unit 34 is a storage unit that stores an arbitrary illumination image. Specifically, the composition unit 37 described later obtains a plurality of images necessary for generating an arbitrary illumination image from the image storage unit 32. After reading and synthesizing an image based on the setting value stored in the setting storage unit 33 to generate an arbitrary illumination image, the arbitrary illumination image is received from the synthesis unit 37 and stored.
  • the receiving unit 40 is a receiving unit that receives various types of information from an operator, and includes an operation panel, a switch, a button, and the like. Specifically, information related to turning on and off the light source 14 by the lighting unit 10 The operator's power is also received, for example, information relating to the start of imaging by the imaging unit 20 and information on weighting setting values used when the synthesis unit 37 generates an arbitrary illumination image.
  • the illumination instruction unit 35 is a control unit that controls the three illumination units 10. Specifically, when the reception unit 40 receives an instruction to start illumination of the illumination unit 10 by the operator, the illumination instruction unit 35 receives the information. And send a signal to the lighting unit 10 to start lighting.
  • the imaging instruction unit 36 is a control unit that controls the imaging unit 20, and specifically, the reception unit 40.
  • the operator receives an instruction to start imaging of the imaging unit 20, the information is received and a signal is sent to the imaging unit 20 to start imaging.
  • the combining unit 37 is an arbitrary illumination image generating unit that combines the images of the respective frequency bands acquired by the imaging unit 20 and generates an arbitrary illumination image.
  • the image storage unit 32 stores the image.
  • a plurality of images necessary for generating an arbitrary illumination image are read out, and further, an arbitrary illumination image is generated by weighting each image based on the setting value stored in the setting storage unit 33, and the arbitrary illumination image storage unit 34 stores the image. Store.
  • the three illumination units 10 are arranged with a filter that transmits only illumination light in different frequency bands for each of a plurality of directions in front of a light source that emits light in a specific frequency band.
  • Illumination means for simultaneously illuminating the subject by transmitting the illumination light emitted from the light source and is configured by filters 11 to 13 and a light source 14, respectively, as shown in FIG.
  • the light source 14 after receiving the signal output from the illumination instruction unit 35, the light source 14 specifically has a curve 50 on the coordinate axis with the horizontal axis representing frequency and the vertical axis representing intensity, as shown in FIG. Illuminates light in a wide frequency band as represented by, and starts lighting the subject.
  • Each of the filters 11 to 13 transmits light in a frequency band based on the characteristics of the filters 11 to 13 from the light that the light source 14 is turned on. That is, as shown in FIG. 3, the filter 11 transmits light in one frequency band represented by the curve 51 on the same coordinate axis from light in a wide frequency band represented by the curve 50.
  • the filter 12 transmits light in one frequency band represented by the curve 52 on the same coordinate axis, and the filter 13 transmits light in one frequency band represented by the curve 53 on the same coordinate axis. .
  • the imaging unit 20 transmits only the reflected light in the frequency band illuminated in any one of a plurality of different directions between adjacent light receiving elements on the single-plate type light receiving surface.
  • An image pickup means that includes a filter so as to cover the light receiving element together with the light receiving element, receives reflected light transmitted through the filter for each light receiving element by the light receiving surface, and obtains an image composed of reflected light in each frequency band.
  • it consists of a filter 21 and a light receiving surface 22 (such as a CMOS sensor or CCD). Specifically, as shown in FIG.
  • the imaging unit 20 includes, as described above, one of the light receiving elements constituting the small region 61 in the small region 61 of the single-plate light receiving surface 60. Cover the filter 62 having the same characteristics as the filter 11 used in the illumination unit 10, and cover the filter 63 having the same characteristics as the filter 12 used for the illumination unit 10 in the same manner as described above for the right adjacent light receiving element, Similarly, the light receiving elements near the lower surface cover the filters 64 having the same characteristics as the filter 13 used in the illumination unit 10 described above, so that each light receiving element constituting the light receiving surface 60 is covered with the filter. Then, the reflected light incident on the light receiving element is separated, and the reflected light transmitted through each filter is received by the light receiving surface 60, and images for each frequency band are simultaneously acquired.
  • FIG. 5 is a flowchart illustrating a processing procedure for generating an arbitrary illumination image according to the first embodiment.
  • the illumination instruction unit 35 performs illumination related to the illumination unit 10.
  • the signal is output, and the illumination unit 10 performs illumination of the subject with light in different frequency bands from three different directions (step S502), and outputs a signal related to imaging from the imaging instruction unit 36 to the imaging unit 20.
  • the imaging unit 20 captures the reflected light of the subject illuminated by the illumination unit 10 and acquires an image for each frequency band (step S503).
  • the arbitrary illumination image generating device temporarily stores the image in the image storage unit 32 (step S505), and the combining unit 37 Are combined based on the setting stored in the setting storage unit 33 (step S506), and the arbitrary illumination image is stored in the arbitrary illumination image storage unit 34 (step S507).
  • the three illumination units 10 simultaneously illuminate the subject with illumination lights having different frequency bands in a plurality of directions
  • the imaging unit 20 is configured by the three illumination units 10.
  • the illuminated subject is imaged, and an image with reflected light power in each frequency band is obtained for each frequency band illuminated in each of a plurality of directions, and the image processing unit acquires each frequency band acquired by the imaging unit 20. Since the images are combined to generate an arbitrary illumination image, there is no movement in the subject that does not need to be shot multiple times by switching the illumination direction.
  • Short no change in time or surrounding light / dark conditions ⁇ Short
  • multiple images can be acquired and an arbitrary illumination image can be generated.
  • the three illumination units 10 include the light source 14 that irradiates light in a specific frequency band, and the filters 11 to 13 illuminate in different frequency bands in a plurality of directions. Since only light is transmitted, as a result of using a common light source 14 in each direction, it is possible to configure the illumination unit 10 at a lower cost compared to a method using a different light source for each frequency band described later.
  • the imaging unit 20 has a frequency band illuminated in one of the directions at different frequency bands between the adjacent light receiving elements on the single-plate light receiving surface 22.
  • a filter that transmits only the reflected light is provided so as to cover the light receiving element for each light receiving element, and the reflected light that has passed through the filter for each light receiving element is received by the light receiving surface, and an image having reflected light power in each frequency band is obtained.
  • Example 2 the arbitrary illumination image generation device according to the first embodiment has been described so far, the present invention may be implemented in various different forms other than the above-described embodiments. Therefore, in the following, these various different modes will be described as Example 2.
  • the illumination light is a force that has a single frequency band force.
  • the present invention is not limited to this. Transmitting multiple frequency bands that are integral multiples of Thus, the illumination light may have comb frequency characteristics.
  • the filter 11 has a frequency that is an integral multiple of the fundamental frequency represented by k on the same coordinate axis.
  • the filter 12 has a characteristic of transmitting a number (k, 2k, 3k) of light.
  • the filter 13 has a fundamental frequency represented by k on the same coordinate axis.
  • Light power across frequency band Extracts illumination light with comb frequency characteristics.
  • the frequency bands of the illumination light having the comb frequency characteristics transmitted through the three filters 11 to 13 do not overlap each other.
  • the present invention can be implemented by covering the light receiving element constituting the light receiving surface 60 of the imaging unit 20 with a filter having similar characteristics.
  • the three illumination units 10 simultaneously illuminate the subject with illumination light in a plurality of frequency bands (comb-shaped frequency characteristic illumination light) composed of integral multiples of the fundamental frequency for each of a plurality of directions. Since the imaging unit 20 acquires an image with reflected light power of a plurality of frequency bands illuminated in each direction for each of a plurality of directions, the object is irradiated with light having a wide frequency range, so that one object is obtained for each direction. Compared to the method of illuminating with the illumination light in the frequency band and capturing the image, it is possible to obtain a clear image of the subject even when the reflection characteristics of the object have characteristics that differ greatly depending on the frequency band.
  • the force in which the three illumination units 10 are configured by the filters 11 to 13 and the light source 14 is not limited to this.
  • the present invention is not limited to this. Even if you make up the part.
  • FIG. 7 is a diagram showing a configuration of a small light source integrated illumination unit (one frequency band for each direction) according to Example 2, but three illumination units as shown in FIG.
  • One of the 70 is composed of a large number of light sources 71 in the frequency band “kl” to constitute the lighting unit 10, and
  • the illumination unit 10 may be configured by integrating a large number of light sources 72 in the region “k2”, and one may be configured by integrating a large number of light sources 73 in the frequency band “k3”.
  • This is the same illumination as that using a filter that has the characteristic of transmitting one frequency band from light over a wide frequency band, as in the case where the three illumination units 10 are composed of the filters 11 to 13 and the light source 14. You can expect light.
  • FIG. 8 is a diagram illustrating a configuration of a small light source integrated illumination unit (a plurality of frequency bands for each direction) according to the second embodiment.
  • the illumination units 70 one includes a light source 74a having a frequency band “k”, a light source 74b having a frequency band “2k”, and a frequency.
  • a large number of light sources 74c in the band “3k” are integrated to form the illumination unit 10.
  • the lighting unit 10 is constructed by integrating several light sources.
  • One is a light source 76a having a frequency band “k” and a frequency band “k”
  • the lighting unit 10 is configured by integrating a number of light sources 76b of 2k '' and light sources 76c of the frequency band ⁇ 3k ''.
  • Example 1 the imaging unit 20 obtains an image for each frequency band by separating the reflected light by covering each light receiving element constituting the light receiving surface 60 with a filter, but the present invention is limited to this.
  • a single-plate-type light receiving surface is arranged so that all light receiving elements are uniformly covered in order, and each frequency band has a filter that transmits only reflected light in the frequency band illuminated in each direction.
  • the filter for each frequency band is switched so as to cover the light receiving surface in order, and the reflected light that has passed through each filter is received by the light receiving surface according to the switching, and an image composed of the reflected light of each frequency band is acquired.
  • FIG. 9 is a diagram showing a configuration of a single-plate and filter-switching type imaging unit.
  • the image pickup unit 20 is a filter that installs a disk-like filter with a fan-shaped filter 80a, a fan-shaped filter 80b, and a fan-shaped filter 80c so as to cover the entire surface of the light-receiving surface 60.
  • the fan-shaped filters 80a to 80c for each frequency band are switched so as to cover the light receiving surface in order to separate the reflected light, and the reflected light separated for each filter is received by the light receiving surface 60 for each frequency band. You can even get images!
  • the imaging unit 20 can be configured easily.
  • the imaging unit 20 obtains an image for each frequency band by separating the reflected light by covering each light receiving element constituting the light receiving surface 60 with a filter, but the present invention is limited to this.
  • the imaging unit 20 which is not a thing splits the reflected light of the subject for each frequency band illuminated in each direction, and receives the reflected light in each frequency band by a light receiving surface provided for each frequency band. Let's get an image of reflected light power in each frequency band.
  • FIG. 10 is a diagram showing a configuration of a double-plate and spectral imaging unit.
  • reflected light 91 is reflected by a spectroscope 90 combined with a prism for each frequency band.
  • the reflected light 91a, the reflected light 91b, and the reflected light 91c are dispersed into the light receiving surface 60a, the light receiving surface 60b, and the light receiving surface 60c provided on the reflected light 91a to 9lc, respectively, and reflected light in each frequency band. Try to get an image consisting of.
  • the reflected light of the illumination light simultaneously irradiated onto the subject by the three illumination units 10 is dispersed, and the reflected light in each frequency band is captured by the light receiving surface provided for each frequency band.
  • Acquiring images makes it possible to acquire images that maintain the ideal simultaneity for generating arbitrary illumination images, and acquire a clear image of the subject for each of multiple light-receiving surfaces. It becomes possible.
  • the arbitrary illumination image generation device acquires only an image for synthesis (an image in each frequency band necessary for generating an arbitrary illumination image) by the imaging unit 20, and synthesizes the images.
  • an arbitrary illumination image is generated, the present invention is not limited to this.
  • An image captured with light in a frequency band close to one end of the bright light frequency band is also acquired by the imaging unit 20 and is different from the illumination light from the illumination unit 10 from the images in each frequency band necessary for generating an arbitrary illumination image. It is also possible to synthesize the image of each frequency band after removing the component due to ambient light.
  • FIG. 11 is a diagram showing the configuration of the imaging unit for removing the external light component.
  • the imaging unit for removing the external light component in the small region 61 of the single-plate type light receiving surface 60, Similarly, one light receiving element covers the filter 62, the right adjacent light receiving element covers the filter 63, and the lower adjacent light receiving element covers the filter 64. At this point, cover the filter 65 on the light receiving element near the lower right.
  • FIG. 12 is a diagram for explaining the removal of the external light component.
  • the reflected light (for example, represented by the curve 105) is reflected on the light receiving element covered with the filter 62 (see FIG.
  • the illumination light reflected by the subject represented by curve 101, curve 102, and curve 103 and the ambient light represented by curve 104 are incident
  • it is represented by curve 106 depending on the characteristics of filter 62.
  • the reflected light represented by the curve 105 is incident on the light receiving element covered by the filter 63
  • it is represented by the curve 107 depending on the characteristics of the filter 63.
  • the light in the frequency band represented by the curve 108 depends on the characteristics of the filter 64. Is transmitted, and the imaging unit 20 uses light of each frequency band. Acquiring an image (required to generate any illumination picture). At this time, ambient light components as indicated by hatched portions are mixed in each image.
  • the imaging unit 20 receives the light in the frequency band represented by the curve 109, the curve 110, the curve 111, and the curve 112 by the light receiving element covered with the filter 65 together with the above-described image. By connecting these, the intensity in each frequency band of the reflected light by the external light represented by the curve 113 is obtained.
  • the synthesizer 37 converts the ambient light components included in these images into images of light in each frequency band.
  • the image of each frequency band is synthesized.
  • the image acquisition device illuminates a subject from at least three or more directions, captures the subject from a predetermined same direction, and acquires a plurality of images having different illumination directions.
  • it is suitable for acquiring a plurality of images (a plurality of images having different illumination directions) that are useful for generating an arbitrary illumination image even in an environment where the subject and ambient illumination fluctuate drastically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Image Processing (AREA)

Abstract

L'invention concerne un dispositif d'acquisition d'images vidéo où une lumière d'éclairement présentant des bandes de fréquence différentes les unes des autres dans chacune d'une pluralité de directions de rayonnement est rayonnée d'un moyen d'éclairement vers un objet et une image vidéo de l'objet éclairé est captée par un moyen de captage d'image vidéo, de sorte qu'une image vidéo de l'objet éclairé est composée de lumière réfléchie avec chacune des bandes de fréquence dans toutes les directions de rayonnement. Par exemple, des filtres, traversés par une lumière présentant une bande de fréquence différente dans chaque direction, sont utilisés pour faire passer la lumière présentant une large gamme de bandes de fréquence, la lumière d'éclairement présentant des bandes de fréquence différentes les unes des autres dans toutes les directions est rayonnée simultanément vers un objet, la lumière incidente réfléchie est séparée par des éléments récepteurs de lumière constitués de plans récepteurs de lumière du type à plaque unique, dont chacun est couvert par l'un des filtres, ladite lumière séparée étant captée et une image vidéo étant acquise à partir de la lumière réfléchie dans chaque bande de fréquence émise dans chacune de la pluralité de directions.
PCT/JP2006/305416 2006-03-17 2006-03-17 Dispositif d'acquisition d'images video WO2007108070A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/305416 WO2007108070A1 (fr) 2006-03-17 2006-03-17 Dispositif d'acquisition d'images video

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/305416 WO2007108070A1 (fr) 2006-03-17 2006-03-17 Dispositif d'acquisition d'images video

Publications (1)

Publication Number Publication Date
WO2007108070A1 true WO2007108070A1 (fr) 2007-09-27

Family

ID=38522111

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/305416 WO2007108070A1 (fr) 2006-03-17 2006-03-17 Dispositif d'acquisition d'images video

Country Status (1)

Country Link
WO (1) WO2007108070A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009081498A1 (fr) * 2007-12-26 2009-07-02 Shimadzu Corporation Dispositif de capture d'image d'organisme
JP4983929B2 (ja) * 2007-12-26 2012-07-25 株式会社島津製作所 生体画像取得装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0787263A (ja) * 1990-12-13 1995-03-31 Internatl Business Mach Corp <Ibm> 単一走査遅延積分カラー画像収集システムおよびその方法
JP2003187230A (ja) * 2001-12-14 2003-07-04 Kao Corp 撮影画像処理装置および化粧シミュレーション装置
JP2005127989A (ja) * 2003-10-03 2005-05-19 Olympus Corp 傷検出装置および傷検出プログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0787263A (ja) * 1990-12-13 1995-03-31 Internatl Business Mach Corp <Ibm> 単一走査遅延積分カラー画像収集システムおよびその方法
JP2003187230A (ja) * 2001-12-14 2003-07-04 Kao Corp 撮影画像処理装置および化粧シミュレーション装置
JP2005127989A (ja) * 2003-10-03 2005-05-19 Olympus Corp 傷検出装置および傷検出プログラム

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009081498A1 (fr) * 2007-12-26 2009-07-02 Shimadzu Corporation Dispositif de capture d'image d'organisme
WO2009081969A1 (fr) * 2007-12-26 2009-07-02 Shimadzu Corporation Dispositif d'acquisition d'image biologique
US20110164124A1 (en) * 2007-12-26 2011-07-07 Kentaro Hizume Biological image acquisition device
JP4983929B2 (ja) * 2007-12-26 2012-07-25 株式会社島津製作所 生体画像取得装置
US8842173B2 (en) * 2007-12-26 2014-09-23 Shimadzu Corporation Biological image acquisition device

Similar Documents

Publication Publication Date Title
JP5545016B2 (ja) 撮像装置
CN104702824B (zh) 摄像装置及摄像装置的控制方法
KR101605419B1 (ko) 촬상 장치 및 촬상 방법
CN101361646B (zh) 内窥镜装置
US20150130917A1 (en) Miniature contactless fingerprinting device
WO2009039876A1 (fr) Suivi de visage dans un processeur de caméra
CN102647941A (zh) 用于执行光电容积描记的方法和系统
JP2005004524A (ja) 識別装置および個人認証装置
CN107920205B (zh) 图像处理方法、装置、存储介质和电子设备
JP2012120132A (ja) 撮像装置およびプログラム
JP4281954B2 (ja) カメラ装置
JP6660720B2 (ja) 指静脈認証装置
WO2007108070A1 (fr) Dispositif d&#39;acquisition d&#39;images video
CN110574368A (zh) 固态摄像装置、摄像系统以及物体识别系统
KR20100013862A (ko) 잔류 영상을 표시하는 디지털 촬영 장치의 제어 방법, 상기제어 방법에 따라 구동하는 디지털 촬영 장치 및 상기제어 방법을 기록한 기록 매체
WO2017216782A1 (fr) Système d&#39;endoscope électronique
FR2874124B1 (fr) Dispositif pour l&#39;acquisition d&#39;images et/ou de spectres de pertes d&#39;energie
JP5000699B2 (ja) 対象画像の位置検出装置および方法ならびに対象画像の位置検出装置を制御するプログラム
KR20230128430A (ko) 다수의 유형들의 광을 이용한 비전 검사를 위한 시스템들및 방법들
JP7039906B2 (ja) 撮像装置、撮像方法及びプログラム
JP6587959B2 (ja) 肌画像生成装置、肌画像生成装置の作動方法、および肌画像生成処理プログラム
EP4012479A1 (fr) Dispositif d&#39;imagerie médicale à image divisée sur un capteur d&#39;image commun
Riza et al. Data efficient digital micromirror device-based image edge detection sensor using space-time processing
WO1992010907A1 (fr) Roue de filtres de couleur pour endoscopes et traitement des signaux de couleur generes
WO2014027675A1 (fr) Dispositif de traitement d&#39;image, dispositif de capture d&#39;image et programme

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 06729405

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06729405

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP