JP6488546B2 - Spectacle wearing image analysis apparatus, spectacle wearing image analysis method, and spectacle wearing image analysis program - Google Patents

Description

  The present invention relates to a spectacle wearing image analysis apparatus, a spectacle wearing image analysis method, and a spectacle wearing image analysis program for analyzing a photographed image in order to measure spectacle wearing parameters necessary for manufacturing spectacles.

  There has been proposed a spectacle wearing image analysis apparatus that photographs a face of a subject wearing a spectacle frame with an imaging device and calculates spectacle wearing parameters necessary for manufacturing spectacles from the image (Patent Document 1). reference). In such an apparatus, the spectacle wearing parameters of the subject in the far vision state are calculated from the captured image obtained by photographing the subject in the first state (for example, the far vision state). Moreover, the spectacle wearing parameter of the near vision state of the subject is calculated from the captured image obtained by photographing the subject in the second state (for example, the near vision state).

  In the conventional apparatus, an attachment, a seal, and the like are attached to the spectacle frame, and in the captured image, the spectacle wearing parameters are detected by using them as a mark and the spectacle wearing parameters are measured (see Patent Document 2). Further, when photographing is performed without attaching an attachment or a seal to the spectacle frame, the spectacle frame is detected by detecting the edge of the spectacle frame from the photographed image.

JP 2007-216049 A Special table 2010-503858 gazette

  By the way, when calculating the spectacle wearing parameters, the captured image in the first state and the captured image in the second state are acquired and analyzed respectively. However, when acquiring spectacle wearing parameters from a photographed image, analysis is performed while distinguishing from eyebrow, nose, and hair parts, so it takes time to acquire spectacle wearing parameters. For this reason, it takes much time to analyze the captured image in the first state and the captured image in the second state. In addition, when analyzing the captured image in the first state and the captured image in the second state, the accuracy of the acquired spectacle wearing parameters may not be good.

  In view of at least one of the above problems, the present invention provides a spectacle wearing image analysis apparatus, a spectacle wearing image analysis method, and a spectacle wearing image analysis program capable of suitably calculating spectacle wearing parameters. And

(1) A spectacle wearing image analysis apparatus according to a first aspect of the present disclosure is an spectacle wearing image analysis apparatus for analyzing an image of a subject wearing spectacles and measuring a spectacle wearing parameter of the subject. An image acquisition means for acquiring a first photographed image obtained by photographing the first state of the subject and a second photographed image obtained by photographing a second state different from the first state of the subject; Analysis means for obtaining a first spectacle wearing parameter by analyzing one photographed image, analyzing the second photographed image based on the first spectacle wearing parameter, and obtaining a second spectacle wearing parameter; And the analysis means includes, as the first spectacle wearing parameter, position information for defining a position of a lower end of the lens, which is a boundary between the lens related to the subject's spectacles and a spectacle frame , in the first photographed image. Get based on display The second captured image is displayed on the means, and an index corresponding to the lower end position of the lens acquired from the first captured image, the position of the index to be superimposed on the second captured image is set on the lens. It is set based on the position information of the lower end, the index is superimposed on the set position on the second captured image, and the second spectacle wearing parameter is acquired based on the position of the index .
(2) The spectacle wearing image analysis method according to the second aspect of the present disclosure is a spectacle wearing image analysis method for analyzing an image of a subject wearing spectacles and measuring a spectacle wearing parameter of the subject. An image acquisition step of acquiring a first photographed image obtained by photographing the first state of the subject and a second photographed image obtained by photographing a second state different from the first state of the subject; An analysis step of obtaining a first spectacle wearing parameter by analyzing one photographed image, analyzing the second photographed image based on the first spectacle wearing parameter, and obtaining a second spectacle wearing parameter; The position information for defining the position of the lower end of the lens that is the boundary between the lens and the spectacle frame as the first spectacle wearing parameter is acquired based on the first photographed image and displayed. Said to the means While displaying a 2nd picked-up image, it is a parameter | index corresponding to the lower end position of the said lens acquired from the said 1st picked-up image, Comprising: The position of the said index superimposed on the said 2nd captured image is the said lower end of the said lens An analysis step of setting based on position information, displaying the index superimposed on the set position on the second captured image, and acquiring the second spectacle wearing parameter based on the position of the index. Features.
(3) The spectacle wearing image analysis program according to the third aspect of the present disclosure is executed in a spectacle wearing image analysis apparatus for analyzing an image of a subject wearing spectacles and measuring a spectacle wearing parameter of the subject. A spectacle wearing image analysis program that is executed by a processor of the spectacle wearing image analysis apparatus, and a first photographed image obtained by photographing the first state of the subject, and the first state of the subject. Obtains a first spectacle wearing parameter by analyzing an image acquisition step of acquiring a second photographed image obtained by photographing different second states, and based on the first spectacle wearing parameter. Analyzing the second captured image and obtaining a second spectacle wearing parameter, wherein the first spectacle wearing parameter includes a lens and a spectacle lens associated with the subject's spectacles. Position information for defining the position of the lower end of the lens, which is the boundary of the frame, is acquired based on the first photographed image, and the second photographed image is displayed on the display means and obtained from the first photographed image. An index corresponding to the lower end position of the lens, the position of the index to be superimposed on the second captured image is set based on the position information of the lower end of the lens, and the index is set to the second captured image An analysis step of superimposing and displaying on the set position above and acquiring the second spectacle wearing parameter based on the position of the index is executed by the spectacle wearing image analysis apparatus.

  According to the present invention, the spectacle wearing parameters can be suitably calculated.

It is a schematic block diagram of the external appearance of the spectacles wearing image analyzer which concerns on a present Example. It is a schematic block diagram of the optical system accommodated in the spectacles wearing image analyzer which concerns on a present Example. 1 shows a schematic configuration diagram of a side photographing optical system. It is a block diagram which shows the control system of a present Example. It is a flowchart explaining the flow of control operation in a present Example. It is a figure which shows an example of the front image and side image of a subject of a far vision state displayed on a display part. It is a figure which shows an example of the screen displayed on the display part 15 after completion | finish of the analysis of a 1st picked-up image. It is a figure explaining an example of control which acquires the 2nd spectacles wearing parameter based on the 1st spectacles wearing parameter. It is a figure which shows an example of the screen displayed on a display part after completion | finish of the analysis of a 2nd picked-up image.

  Hereinafter, the present embodiment will be described with reference to the drawings. 1-9 is a figure explaining the structure of the spectacles wear image-analysis apparatus based on this embodiment. In the following description, the left-right direction of the subject will be described as the X-axis direction, the up-down direction of the subject as the Y-axis direction, and the front-back direction of the subject will be described as the Z-axis direction.

<Overview>
An outline of the spectacle wearing image analysis apparatus 1 according to the embodiment of the present invention will be described. The spectacle wearing image analysis apparatus 1 according to the present embodiment mainly includes an illumination optical system 110, a distance measurement optical system 200, a near measurement optical system 300, an optical path switching unit 400, and a side imaging optical system 500.

  For example, the spectacle wearing image analysis apparatus 1 is used for analyzing an image of a subject wearing spectacles and measuring spectacle wearing parameters of the subject.

  For example, the distance measurement optical system 200 and the near measurement optical system 300 are used to capture a front image of the subject. The side photographing optical system 500 is used for photographing a side image of the subject.

  For example, the spectacle wearing image analysis apparatus 1 includes an image acquisition unit and an analysis unit. For example, in this embodiment, the image acquisition unit and the analysis unit are combined. Of course, the image acquisition unit and the analysis unit may be provided separately.

  For example, the image acquisition means (the control unit 70) obtains a first photographed image obtained by photographing the first state of the subject and a second photographed image obtained by photographing a second state different from the first state of the subject. get. Further, for example, the analysis unit (the control unit 70) acquires the first spectacle wearing parameter by analyzing the first picked-up image, analyzes the second picked-up image based on the first spectacle wearing parameter, 2. Obtain spectacle wearing parameters.

  For example, the spectacle wearing parameters include pupil information (for example, pupil position, pupil diameter, etc.), frame information (for example, frame width, frame position, etc.), and the like. Further, for example, the spectacle wearing parameters include an interpupillary distance, an eye position height (fitting point height), and the like as determined from pupil information and frame information. In addition, for example, there are spectacle wearing parameters (for example, frame forward tilt angle, spectacle wearing distance, etc.) calculated by extracting a frame part from a side image.

  Note that the first state and the second state may be different shooting states. For example, the different imaging states include a configuration in which the imaging state (face position, posture, line-of-sight direction, etc.) of the subject to be imaged is different.

  For example, the captured images in the first state and the second state are acquired by capturing images with different fixation target presentation conditions. For example, the fixation target presentation condition is changed by changing the presentation position of at least one of the fixation target in the X-axis direction, the Y-axis direction, and the Z-axis direction (distance direction between the subject and the fixation target), For example, changing the light amount of the light source of the fixation target.

  For example, the line-of-sight direction of the subject is changed by changing the presentation position of at least one of the X-axis direction and the Y-axis direction of the fixation target. For example, the subject can be brought into a far vision state or a near vision state by changing the viewing direction. For example, the fixation target projection optical system 200a and the fixation target projection optical system 300 are used as a configuration for changing the presentation position of at least one of the X axis direction, the Y axis direction, and the Z axis direction of the fixation target. A configuration is mentioned. In this case, for example, there is a configuration in which the light source of the fixation target that is turned on when photographing is switched between the fixation target projection optical system 200a and the fixation target projection optical system 300a. Further, for example, there is a configuration in which the presentation position of the light source 320 in the fixation target projection optical system 300a is changed.

  For example, the photographing state that is different between the first state and the second state includes a combination of a far vision state and a near vision state. Of course, the first state and the second state may be any state in which the state at the time of shooting is different. For example, the first state may be a near vision state, and the second state may be a near vision state. In this case, for example, a configuration in which the distance between the eye to be examined and the apparatus, the face position, and the like are changed even in the same near vision state.

  For example, in the present embodiment, the control unit 70 acquires a photographed image obtained by photographing a subject in the far vision state as the first photographed image, and photographs the subject in the near vision state as the second photographed image. Acquire the captured image. The control unit 70 analyzes the first photographed image obtained by photographing the subject in the far vision state, acquires the first spectacle wearing parameter, and based on the first spectacle wearing parameter, the subject in the near vision state The second photographed image obtained by photographing is analyzed. In this way, by acquiring the captured images in the far vision state and the near vision state and obtaining the spectacle wearing parameters from them, it can be used for selection of an optimal progressive lens, production of a custom lens, and the like.

  For example, as a configuration for acquiring the first captured image and the second captured image, a configuration in which various types of optical systems provided in the spectacle wearing image analysis apparatus 1 are used is used. Further, for example, as a configuration for acquiring the first captured image and the second captured image, a configuration in which an image captured by a different device is received and acquired.

For example, based on the first spectacle wearing parameter, as a configuration for analyzing the second photographed image obtained by photographing the subject in the near vision state, the first spectacle wearing parameter was photographed in the near vision state subject. For example, the control unit 70 may define the position of the subject's eye or glasses (for example, a spectacle frame and a lens) as the first spectacle wearing parameter. Position information is acquired based on the first captured image. The control unit 70 displays the second photographed image on the display unit, and displays an index corresponding to the position information of the first photographed image on the display area of the second photographed image on the display unit based on the position information. To do. That is, based on the position information detected from the first captured image, the control unit 70 performs a corresponding display at a position on the second captured image corresponding to the position of the part detected from the first captured image. The control unit 70 acquires the second spectacle wearing parameter based on the position of the index. For example, when the lower end of the lens is used as the first spectacle wearing parameter, the control unit 70 acquires the position information of the lower end of the lens based on the first captured image as the first spectacle wearing parameter. Based on the position information of the lower end of the lens, the control unit 70 causes an index corresponding to the lower end position of the lens acquired from the first captured image to be superimposed on the position on the second captured image. The control unit 70 acquires the second spectacle wearing parameter based on the index. Of course, the position information for defining the position of the subject's eye or glasses is not limited to the position information of the lower end of the lens. The present invention can be applied if it relates to the eye or glasses of the subject. For example, a configuration using the upper end of the frame, the position of the bridge, and the like can be given.

  Further, for example, as a configuration in which the first spectacle wearing parameter is used for analysis of the second photographed image obtained by photographing the subject in the near vision state, the control unit 70 uses the eye of the subject as the first spectacle wearing parameter. Or the positional information for prescribing | regulating the position regarding spectacles is acquired based on a 1st picked-up image. Based on the position information, the control unit 70 analyzes the second captured image and acquires the second spectacle wearing parameter.

  For example, the control unit 70 may be configured to apply a first spectacle wearing parameter (for example, forward tilt angle, VD, frame width, etc.) detected from the captured image in the first state as the second spectacle wearing parameter in the second state. It is done. This eliminates the need for redetection during the analysis of the second state, and allows the eyeglass parameters to be calculated smoothly.

  Further, for example, when the control unit 70 acquires the position information from the second captured image in the second state based on the position information acquired from the first captured image in the first state, the second state in the second state. There is a configuration in which an analysis range of a captured image is set and analysis is performed. For example, the control unit 70 detects the pupil position from the first captured image in the first state. When analyzing the second captured image in the second state, the control unit 70 searches for the pupil position on the second captured image based on the pupil position information acquired from the first captured image in the first state. To do. That is, the control unit 70 sets a region to be analyzed on the image when detecting the pupil position based on the pupil position information acquired from the captured image in the first state. Accordingly, when detecting the pupil position in the captured image in the second state, the pupil position can be detected without analyzing the entire region of the image, and the second spectacle wearing parameters can be acquired smoothly. it can. In the above description, detection of the pupil position is given as an example, but the present invention is not limited to this. The technique disclosed in the present embodiment can be applied when acquiring position information related to the eye or eyeglass frame of the subject. For example, acquisition of position information related to the eye or eyeglass frame of the subject includes acquisition of position information of the entire eyeglass frame, the bridge portion of the eyeglass frame, the eye of the subject, and the like.

<Example>
FIG. 1 is a schematic configuration diagram of an appearance of a spectacle wearing image analysis apparatus 1 according to the present embodiment. FIG. 2 is a schematic configuration diagram of an optical system housed in the spectacle wearing image analysis apparatus 1 according to the present embodiment. Hereinafter, the configuration of the spectacle wearing image analysis apparatus 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the apparatus main body 3 of the spectacle wearing image analysis apparatus includes various measurement optical systems, a drive system, a control system, and the like, which will be described later. A presentation window 5 is provided on the subject side of the apparatus body 3. The presentation window 6 is a window through which a fixation light beam passes when presenting a fixation target to a subject. Similarly, a face support unit 5 is provided on the subject side of the apparatus body 3. The face support unit 5 is a unit for supporting the subject's face. An operation unit (operation unit) 10 is provided on the examiner side of the apparatus main body 3. In the present embodiment, the far vision state will be described as an example as the first state. In the present embodiment, the near vision state will be described as an example of the second state. Of course, the near vision state may be used as the first state. A far vision state may be used as the second state.

<Operation unit>
The operation unit 10 outputs a signal corresponding to the input operation instruction to the control unit 70 described later. The operation unit 10 in this embodiment uses a touch panel type display unit 15. That is, in the present embodiment, the operation unit and the display unit are combined. Of course, the operation unit and the display unit may be provided separately. For example, the operation unit 10 includes a configuration using at least one of operation means such as a mouse, a joystick, and a keyboard. For example, the display unit 15 may be a display mounted on the main body of the spectacle wearing parameter measurement device 1 or a display connected to the main body. Of course, it may not be a touch panel type. For example, a display of a personal computer (hereinafter referred to as “PC”) may be used. For example, a plurality of displays may be used in combination. The display unit 15 may display various images including a captured front image or a side image in the far vision and near vision states.

<Face support unit>
The face support unit 5 supports the subject's forehead. The face support unit 5 keeps the distance between the measurement optical system (for example, the distance measurement optical system 200, the near measurement optical system 300, the reflection mirror 410, etc.) and the subject to be described later. Further, the face support unit 5 can rotate in the left-right direction of the subject, and can adjust the orientation of the subject's face. Accordingly, when the orientation of the subject's face is shifted to either the left or right direction, the face support unit 30 can be rotated so that the subject's face faces the front.

  The face support unit 5 mainly includes a joint portion 31, a working distance adjustment unit 40, and a left / right rotation adjustment unit 50. The abutting portion 31 is a portion that contacts the subject's face. The working distance adjustment unit 40 adjusts the position of the contact portion 31 in the Z-axis direction in order to adjust the distance between the subject and a measurement optical system described later. For example, in this embodiment, when the adjustment knob 41 of the working distance adjusting unit 40 is operated by the examiner, the position of the contact portion 31 in the Z-axis direction (working distance direction) is adjusted. The horizontal rotation adjusting unit 50 adjusts the angle in the left-right direction of the contact portion 31 so that the face of the subject faces the front. For example, in this embodiment, the position of the contact portion 31 in the left-right direction is adjusted by the operator operating the adjustment knob 51 of the left-right rotation adjustment portion 50.

  The face support unit 5 is not limited to the configuration of this embodiment. In the present embodiment, it has been described that the subject's forehead is supported, but it may be the subject's chin, cheek, nose, or the like. Any configuration that supports the face of the subject may be used. In the present embodiment, the face support unit 5 has a configuration in which the position of the contact portion 31 is adjusted by the examiner operating the adjustment knobs 41 and 51, but is not limited thereto. The face support unit 5 may include a drive unit such as a motor, and the position of the contact unit 31 may be adjusted electrically by operation of the operation unit 10 or the like.

<Optical system>
Next, an optical system housed in the spectacle wearing image analysis apparatus 1 according to the present embodiment will be described with reference to FIG. The spectacle wearing image analysis apparatus 1 of the present embodiment mainly includes an illumination optical system 110, a distance measurement optical system 200, a near measurement optical system 300, an optical path switching unit 400, and a side imaging optical system 500.

  In this embodiment, at least the distance measuring optical system 200 and the near measuring optical system 300 are used as measuring optical systems having imaging means for capturing an image of a subject wearing spectacles for measuring spectacle parameters. Either of these is used. In the present embodiment, the distance measuring optical system 200 and the near measuring optical system 300 are used for taking a front image of the subject. The side photographing optical system 500 is used for photographing a side image of the subject.

<Illumination optics>
The illumination optical system 110 mainly includes four light sources 110R, 110L, 111R, and 111L (110L and 111L are omitted in FIG. 2). The illumination optical system 110 illuminates the face of the subject from four directions by the light sources 110R, 110L, 111R, and 111L. Of course, the illumination optical system 100 is not limited to the above configuration. Any number of light sources may be used, and the arrangement may be arbitrary. The illumination optical system 110 only needs to illuminate the subject's face with a light source. For example, the illumination optical system 110 may be provided below the face support unit 5 and above the presentation window 6.

  In the illumination optical system 110 of this embodiment, an infrared light source is used. By using an infrared light source and an infrared filter, which will be described later, the influence of disturbance light (natural light or the like) can be suppressed. However, it may not be an infrared light source, and a visible light source may be used.

<Distant measurement optical system>
A distance measurement optical system (hereinafter also referred to as a first measurement optical system) 200 will be described with reference to FIG. The distance measurement optical system 200 is an optical system for measuring the eye position of the eye E in the distance vision state with respect to the spectacle frame. The distance measurement optical system 200 is divided into a first fixation target projection optical system 200a and a first imaging optical system 200b. The measurement optical axis of the distance measurement optical system 200 is an optical axis L1.

  The fixation target projection optical system 200a projects a distance fixation target for fixing the subject to a distance vision state on the eye E. The fixation target projection optical system 200a mainly includes a light source 220, a half mirror 230, and a concave mirror 240. The light source 220 functions as a fixation target projected onto the eye E. The concave mirror 240 reflects the fixation target light beam emitted from the light source 220 as a substantially parallel light beam. In the present embodiment, the fixation target light beam emitted from the light source 220 is reflected as a substantially parallel light beam, but is not limited thereto. The fixation target light beam emitted from the light source 220 may be reflected so as to have a predetermined distance-presenting distance.

  The fixation target light beam emitted from the light source 220 is reflected by the half mirror 230 and is coaxial with the optical axis L1. The fixation target light beam reflected by the half mirror 230 is reflected by the concave mirror 240. The fixation target light beam reflected by the concave mirror 240 is reflected by a reflection mirror 410 described later, passes through the presentation window 6 and enters the eye E to be examined. The concave mirror 240 reflects the fixation target light beam so that it becomes a substantially parallel light beam. For this reason, the fixation target viewed from the subject appears to be farther than the actual distance from the subject eye E to the light source 220. Thereafter, the fixation target light flux is reflected by a reflection mirror 410 described later, passes through the presentation window 6 and enters the eye E to be examined.

  The imaging optical system 200b images the subject's face in the distance vision state from the front direction (a position facing the front of the subject's face). In the present embodiment, the imaging optical system 200b photographs the face of the subject in the far vision state from the front position. Of course, the imaging optical system 200b may be configured to take an image from an obliquely downward direction (an obliquely downward position) as the front direction. Note that the subject's face does not have to be the entire subject's face, but is at least a peripheral image of the subject's eye E (for example, a front image of the subject's face including at least the left and right eyes and a spectacle frame). May be). The imaging optical system 200b mainly includes an imaging element 210, an imaging lens 212, an aperture 214, an infrared filter 216, a half mirror 230, and a concave mirror 240.

  Illumination light from the illumination optical system 110 is reflected by the face of the subject and passes through the presentation window 6. The illumination light that has passed through the presentation window 6 is reflected by the reflection mirror 410. The reflected light reflected by the reflecting mirror 410 is reflected by the concave mirror 240, passes through the half mirror 230, and passes through the infrared filter 216. The infrared light that has passed through the infrared filter 216 passes through the diaphragm 214, is converged by the imaging lens 212, and then forms an image on the imaging element 210. The imaging element 210 is in a positional relationship conjugate with the pupil. The image sensor 210 detects light and outputs a detection signal at that time to the control unit 70.

<Near-measurement optical system>
A near measurement optical system (hereinafter also referred to as a second measurement optical system) 300 is an optical system for measuring the eye position of the eye E in a near vision state. The near measurement optical system 300 is divided into a second fixation target projection optical system 300a and a second imaging optical system 300b.

  The fixation target projection optical system 300a projects a near fixation target for fixing the subject to the near vision state on the eye E from an obliquely downward direction. The fixation target projection optical system 300a mainly includes a light source 320, a half mirror 330, and a convex lens 340. The light source 320 functions as a fixation target projected onto the eye E.

  The fixation target light beam emitted from the light source 320 is reflected by the half mirror 330 and is coaxial with the optical axis L2. The fixation target light beam reflected by the half mirror 330 passes through the convex lens 340 and is converged. Thereafter, the fixation target light flux is reflected by a reflection mirror 410 described later, passes through the presentation window 20 and enters the eye E to be examined.

  The imaging optical system 300b photographs the face of the subject in the near vision state from the front direction (a position facing the front of the subject's face). In this embodiment, the imaging optical system 300b captures the subject's face in the near vision state from an obliquely downward direction (an obliquely downward position). Of course, the imaging optical system 300b may be configured to take an image from the front position as the front direction. The imaging optical system 300b mainly includes an imaging element 310, an imaging lens 312, an aperture 314, an infrared filter 316, a half mirror 330, and a convex lens 340.

  Illumination light from the illumination optical system 110 that illuminates the face of the subject passes through the presentation window 6 and is reflected by the reflection mirror 410. The reflected light reflected by the reflection mirror 410 passes through the convex lens and is converged. The converged light beam passes through the half mirror 330 and passes through the infrared filter 316. The infrared light that has passed through the infrared filter 316 passes through the aperture 314, is converged by the imaging lens 312, and then forms an image on the imaging element 310. The imaging element 310 is in a positional relationship conjugate with the pupil. The image sensor 310 detects light and outputs a detection signal at that time to the control unit 70.

<Optical system moving unit>
The near measurement optical system 300 includes an optical system moving unit 350. The optical system moving unit 350 holds the near measurement optical system 300 to be movable. The optical system moving unit 350 can move the entire near-field measurement optical system 300 in accordance with a change in the angle of the reflection mirror 410 described later during near-field measurement.

  By the way, when the angle of the reflection mirror 410 is changed by the optical path switching unit 400 described later, the optical path of the fixation target projection optical system 300a (index presentation distance) and the optical path of the second imaging optical system 300b change. End up. Therefore, the optical system moving unit 350 of the present embodiment moves the entire near-field measuring optical system 300 as the angle of the reflecting mirror 410 is changed. Thereby, even when the angle of the reflection mirror 410 is changed, the presentation distance of the near visual target is maintained. In addition, the focus state of the second imaging optical system 300b with respect to the eye E is maintained.

  The optical system moving unit 350 can separately move the convex lens 340 for adjusting the presentation distance and the light source 320 for projecting the fixation target. Accordingly, the optical system moving unit 350 can change the relative distance between the convex lens 340 and the light source 320 and change the presenting distance of the fixation target. The optical system moving unit 350 moves the optical member by driving the driving unit using a driving unit (not shown) such as a motor.

<Optical path switching unit>
Returning to FIG. 2, the optical path switching unit 400 will be described. The optical path switching unit switches the optical paths of the distance measurement optical system 200 and the near measurement optical system 300. Further, the optical path switching unit 400 changes the direction of the subject's line of sight during near-field measurement.

  The optical path switching unit 400 mainly includes a reflection mirror 410, a mirror holding unit 420, and a driving unit 440.

  The reflection mirror 410 is held by the mirror holding unit 420. The upper part of the mirror holding part 420 is held by a rotating shaft 425 fixed to the apparatus. The mirror holding part 420 can be rotated around the rotation axis of the rotation shaft 425. At this time, the mirror holding part 420 is rotated integrally with the reflection mirror 410. The reflection mirror 410 reflects the target light beam emitted from the distance measurement optical system 200 or the near measurement optical system 300 toward the eye E. The drive unit 440 is connected to the back surface of the mirror holding unit 420 by a link mechanism unit (not shown). By driving the drive unit 440, the driving force of the drive unit is transmitted to the mirror holding unit 420 via a link mechanism unit (not shown). The mirror holding part 420 is rotated around the rotation shaft 425 by the driving force transmitted from the link mechanism part. When the mirror holding portion is rotated, the reflection mirror 410 rotates around the rotation shaft 425.

  By rotating the reflection mirror 420, the optical path of the target luminous flux is changed, and the presentation position of the fixation target projected onto the eye E is changed. The subject's line-of-sight direction is changed by changing the presentation position of the fixation target. For example, by rotating the reflection mirror in the A direction (moved from the solid line portion to the dotted line portion), the optical path for photographing the subject is changed from the optical path of the distance measurement optical system 200 to the near measurement. The optical path of the optical system 300 is switched. In this way, the optical path switching unit 400 rotates the reflecting mirror 410 to change the fixation target presentation position, and changes the direction of the subject's line of sight in the vertical direction.

<Side shooting optical system>
FIG. 3 shows a schematic configuration diagram of the side photographing optical system 500. The side imaging optical system 500 acquires a side image of the subject by imaging the subject from the side. As shown in FIG. 3, the side imaging optical system 500 is fixed in the left-right direction of the position where the face of the subject is supported.

  The side imaging optical system 500 of this embodiment is roughly divided into a left imaging optical system 500L disposed on the left side of the subject and a right imaging optical system 500R disposed on the right side of the subject. The left imaging optical system 500L images the subject from the left side. The right imaging optical system 500R images the subject from the right side.

  The left photographing optical system 500L mainly includes a half mirror 530L, an infrared filter 540L, an aperture 550L, an imaging lens 560L, and an imaging element 570L.

  Similarly, the right imaging optical system 500R mainly includes a half mirror 530R, an infrared filter 540R, an aperture 550R, an imaging lens 560R, and an imaging element 570R. In the following description, for convenience, the infrared filters 540L and 540R, the diaphragms 550L and 550R, the imaging lenses 560L and 560R, and the imaging elements 570L and 570R are collectively referred to as imaging units 575L and 575R.

  The infrared filters 540L and 540R absorb visible light and transmit infrared light. The imaging elements 570L and 570R receive the infrared light that has passed through the infrared filters 540L and 540R.

  Hereinafter, imaging of a side image will be described using the left imaging optical system 500L as an example. The illumination light beam from the illumination optical system 100 is reflected by the face of the subject and the spectacle frame F. The reflected illumination light beam enters the left photographing optical system 500L. Thereafter, the illumination light beam is reflected by the half mirror 530L. The reflected light beam reflected by the half mirror 530L passes through the infrared filter 540L. The infrared light that has passed through the infrared filter 540L passes through the diaphragm 550L, and is then collected by the imaging lens 560L, and forms an image on the imaging surface of the imaging element 570L. The image sensor 570L transmits the detected captured image to the control unit 70. In this way, the imaging elements 570L and 570R capture the left side image of the subject. Similarly to the left photographing optical system 500L, a right side image of the subject is picked up by the right photographing optical system 500R.

<Control unit>
FIG. 4 is a block diagram showing a control system of this embodiment. The control unit 70 includes a CPU (processor), a RAM, a ROM, and the like. The CPU of the control unit 70 controls the spectacle wearing image analysis apparatus 1. The RAM temporarily stores various information. The ROM of the control unit 70 stores various programs for controlling the operation of the eyeglass-wearing image analysis apparatus 1, initial values, and the like.

  The control unit 70 includes a non-volatile memory (hereinafter abbreviated as “memory”) 72, an operation unit 10, light sources 110L, 110R, 111L, 110R, 220, and 320, image sensors 210, 310, 570L, and 570R, an optical system moving unit. 350 drive units, drive unit 440, and the like are electrically connected.

  The memory 72 is a non-transitory storage medium that can retain stored contents even when power supply is interrupted. For example, a hard disk drive, a flash ROM, and a USB memory or the like that is detachably attached to the spectacle wearing image analysis apparatus 1 can be used as the memory 72. The memory 72 has a photographing control for controlling the photographing of the far vision image (front image in the far vision state) or the near vision image (front image in the near vision state) and the side image by the spectacle wearing image analysis apparatus 1. An image processing program for processing a program, a far vision image or a near vision image, and a side image is stored. Further, the memory 72 stores various types of information relating to photographing, such as information on photographing positions of far-distance or near-field images and side images. Various operation instructions by the examiner are input to the operation unit 10.

<Control action>
Hereinafter, the control operation in the present embodiment will be described with reference to FIG. FIG. 5 is a flowchart for explaining the flow of the control operation in this embodiment. In the present embodiment, the control unit 70 acquires a first photographed image obtained by photographing a subject in the far vision state and a second photographed image obtained by photographing the subject in the near vision state. The control unit 70 acquires the first spectacle wearing parameter by analyzing the first captured image. The control unit 70 analyzes the second captured image based on the first spectacle wearing parameter and acquires the second spectacle wearing parameter.

  For example, the spectacle wearing parameters include pupil information (for example, pupil position, pupil diameter, etc.), frame information (for example, frame width, frame position, etc.), and the like. Further, for example, the spectacle wearing parameters include an interpupillary distance, an eye position height (fitting point height), and the like as determined from pupil information and frame information. In addition, for example, there are spectacle wearing parameters (for example, frame forward tilt angle, spectacle wearing distance, etc.) calculated by extracting a frame part from a side image. In this embodiment, for example, the eye position height is the height (distance) from the lower end of the lens (the lower end of the spectacle frame) to the pupil position of the eye to be examined. That is, the eye position height is the height from the lowest boundary in the Y-axis direction to the pupil in the boundary between the spectacle frame and the lens. In this embodiment, the case where the pupil center is used as the pupil position will be described as an example. Of course, the reference position of the pupil position (position set as the position of the pupil) is not limited to the center of the pupil. The pupil position may be based on any position in the pupil of the subject.

  In the following description, the eye position height in the far vision state (first spectacle wearing parameter) and the eye point height in the near vision state (second spectacle wearing parameter) are acquired as the spectacle wearing parameters. Will be described as an example.

<Acquisition of First Captured Image in Distant Viewing State (S1)>
First, the first captured image in the far vision state is acquired. For example, as the first captured image, a front image, a side image, or the like in a far vision state is used. The examiner inputs to the operation unit 10 and sets to the distance shooting mode. In the distance shooting mode, various optical systems are controlled by the control unit 70 in order to capture an image of the subject in the far vision state.

  When the far shooting mode is set, the control unit 70 controls the driving of the driving unit 440 to change the angle θ of the reflection mirror 410 of the optical switching unit 400 to an angle corresponding to the far shooting mode (for example, 40 degrees with respect to the horizontal plane (XZ plane) direction). The fixation target light flux from the light source 220 is projected horizontally to the eye E by the reflection mirror 410 inclined at an angle corresponding to the distance photographing mode.

  The examiner instructs the subject to wear the spectacle frame. The examiner instructs the subject to put a forehead on the contact portion 31 of the face support unit 5. Next, the examiner instructs the subject to gaze at the fixation target.

  The state in which the subject gazes at the fixation target is imaged by the imaging optical system 200b and the side imaging optical system 500. Based on the detection signals from the imaging optical system 200b and the side imaging optical system 500, the control unit 700 displays on the display unit 15 images of the face taken from the front and sides of the eye E and the subject.

  First, the examiner places the subject on the face support unit 5. The examiner adjusts the face support unit 5 so that the subject's face is arranged at a predetermined position with respect to the spectacle wearing image analysis apparatus 1. That is, the examiner performs alignment adjustment.

  For example, in the present embodiment, the distance between the subject and the spectacle wearing image analysis apparatus 1 is adjusted so that the corneal apex of the eye E is displayed at a predetermined position on the display unit 15. FIG. 6 is a diagram illustrating an example of a front image and a side image of a subject in a far vision state displayed on the display unit 15. In this embodiment, reference lines V and H for indicating the center of the image photographed by the side photographing optical system 500 are displayed on the side screen of the display unit 15 (see FIG. 6). In the present embodiment, the alignment position is set to be appropriate when the intersection of the reference lines V and H and the corneal apex are matched. The examiner confirms the image of the face of the subject (examined face) displayed on the display unit 15 and performs alignment.

  When the position adjustment of the subject's face is completed, the examiner touches a photographing button (not shown) displayed on the display unit 15. When the photographing button is touched, the control unit 70 photographs the front image and the side image of the subject in the far vision state (S1). As described above, the first captured image (front image and side image) in the far vision state is acquired.

<Acquisition of first spectacle wearing parameter (S2)>
When the first captured image is acquired, the control unit 70 starts the analysis of the first captured image and acquires the first spectacle wearing parameter (the spectacle wearing parameter in the far vision state). For example, in the image analysis, the control unit 70 detects frame information of glasses, pupil information of the subject, and the like. The control unit 70 causes the display unit 15 to superimpose and display the detection result together with the captured image used for the analysis on the captured image. Further, based on the detection result, the control unit 70 calculates the eye position height or the like in the distance vision state of the eye E with respect to the spectacle frame (S2), and displays it on the display unit 15. In this embodiment, the spectacle frame position will be described as an example of the spectacle frame information. In the present embodiment, the pupil position of the subject will be described as an example.

  FIG. 7 is a diagram illustrating an example of a screen displayed on the display unit 15 after the analysis of the first captured image is completed. As illustrated in FIG. 7, for example, the control unit 70 displays captured images such as a front image 620, a left side image 621, and a right side image 622. For example, the front image 620, the left side image 621, and the right side image 622 include the eye E and the eyeglass frame F, respectively.

  For example, the control unit 70 causes the display unit 15 to superimpose and display the index on the spectacle frame position and the pupil position of the subject on the captured image based on the detection result detected in the image analysis as the analysis result. For example, the control unit 70 displays an index indicating the spectacle frame position (glass spectacle frame position index), an index indicating the pupil position of the subject (pupil position index) P, and the like. For example, each indicator is displayed on the display unit 15 in various display forms such as a cross mark and a line display. In the present embodiment, the case where the lens lower end LT, which is a predetermined part of the spectacle frame, is displayed as the spectacle frame position will be described as an example. Of course, the spectacle frame position is not limited to the lower end of the lens. As the eyeglass frame position, any part relating to the eyeglass frame can be applied. For example, the spectacle frame position includes the position of the entire spectacle frame. Further, for example, the spectacle frame position includes a position of the upper end of the lens (the upper end of the spectacle frame), the bridge of the spectacle frame, or the like, which is a predetermined part of the spectacle frame.

  Further, for example, the display unit 15 has an index (eye position height index) BT indicating the eye position height calculated based on the detection result, and an index (interpupillary distance index) indicating the interpupillary distance in the far vision state. A PD or the like is displayed superimposed on the captured image. For example, the inter-pupil distance PD is a distance between the left and right pupil centers. Further, for example, the eye position height, the interpupillary distance, and the like calculated based on the detection result are displayed as indices, and the measured values are displayed on the display screen of the display unit 15. For example, the measurement value display field 80 displayed on the display unit 15 shows measurement values such as eye position height and interpupillary distance. The first spectacle wearing parameters acquired by the analysis are stored in the memory 72. As described above, the first spectacle wearing parameter is acquired.

  In the present embodiment, the first spectacle wearing parameter has been described by taking a configuration in which the first spectacle wearing parameter is automatically detected, but is not limited thereto. The first spectacle wearing parameter may be detected automatically or manually. Further, the first spectacle wearing parameter may be detected manually and automatically. For example, in the case of manual detection, the examiner operates the operation unit 10 while observing the captured image, moves the index displayed on the captured image, determines the position of the index, and the index moves. The structure which acquires the result in the set position as a 1st spectacles wearing parameter is mentioned. Further, for example, when the detection is performed manually and automatically, the captured image is automatically analyzed, and an index based on the detection result is displayed on the captured image. The examiner moves the index by operating the operation unit 10 from the position where the index displayed on the captured image is displayed. The control unit 70 may be configured to acquire the result at the position where the index is moved as the first spectacle wearing parameter. That is, the measurement value in the measurement value display field 80 is changed in conjunction with the movement of the index.

<Acquisition of second captured image in near vision state (S5)>
When the distance measurement is completed, the examiner operates the operation unit 10 to set the near-field shooting mode. In the near-field shooting mode, the control unit 70 controls various optical systems in order to capture an image of the subject in the near vision state. In this embodiment, the distance shooting mode and the near shooting mode are set by the examiner's operation. However, the present invention is not limited to this. For example, the control unit 70 may be configured to switch the mode from the distance shooting mode to the near shooting mode when the distance measurement is completed.

  When the near measurement mode is set, the control unit 70 controls the drive of the drive unit 440 to change the angle θ of the reflection mirror 410 to an angle corresponding to the near measurement mode (for example, a horizontal plane (XZ plane)). For example, 55 ° to 80 ° relative to the angle).

  The control unit 70 stops the light emission of the light source 220 and starts the light emission of the light source 320. When the angle θ of the reflection mirror 410 is changed, the fixation target of the light source 220 cannot be confirmed from the subject, and the fixation target of the light source 320 can be seen.

  The manner in which the subject gazes at the fixation target is imaged by the imaging element 310 of the imaging optical system 300b. Based on detection signals from the imaging optical system 300 b and the side imaging optical system 500, the control unit 70 displays on the display unit 15 images of the face taken from the front and sides of the eye E and the subject.

  First, the examiner places the subject on the face support unit 5. The examiner adjusts the face support unit 5 so that the subject's face is arranged at a predetermined position with respect to the spectacle wearing image analysis apparatus 1. That is, the examiner performs alignment adjustment. The alignment adjustment is performed in the same manner as in the distance shooting mode.

  When the position adjustment of the subject's face is completed, the examiner touches a photographing button (not shown) displayed on the display unit 15. When the photographing button is touched, the control unit 70 photographs a front image and a side image of the subject in the near vision state (S5). In this embodiment, the face of the subject in the near vision state is photographed from an obliquely downward direction. As described above, the second captured image (front image and side image) in the near vision state is acquired.

<Acquisition of second spectacle wearing parameter (S6)>
When the second captured image is acquired, the control unit 70 starts the analysis of the second captured image and acquires the second spectacle wearing parameter (the spectacle wearing parameter in the near vision state) (S6). For example, in the image analysis, the control unit 70 detects frame information of glasses, pupil information of the subject, and the like. The control unit 70 causes the display unit 15 to superimpose and display the detection result together with the captured image used for the analysis on the captured image. Further, the control unit 70 calculates the eye position height or the like in the near vision state of the eye E with respect to the eyeglass frame based on the detection result, and displays the calculated eye position height on the display unit 15.

  Here, in the present embodiment, the second photographed image in the near vision state is photographed obliquely downward. When calculating the glasses wearing parameters of the near vision state of the subject from the second captured image obtained by photographing the subject in the near vision state, the position of the eyeglass frame becomes difficult to understand (see FIG. 8B). .

  For example, a spectacle frame is detected by image processing. At this time, it is difficult to detect the boundary between the lens and the spectacle frame due to the thickness of the spectacle frame. Thereby, the detection accuracy of the predetermined part in the spectacle frame is lowered. For example, in this embodiment, when the lower end of the lens is acquired from the second captured image, a position different from the actual lower end of the lens may be detected as the lower end of the lens.

  In the present embodiment, the control unit 70 displays an index corresponding to the first spectacle wearing parameter on the display area of the second captured image on the display unit 15 based on the first spectacle wearing parameter. The control unit 70 acquires the second spectacle wearing parameter based on the final index position. For example, the control unit 70 causes an index corresponding to the lower end position of the lens acquired from the first captured image to be superimposed and displayed at a position on the second captured image based on the position information of the lower end of the lens. The control unit 70 acquires the second spectacle wearing parameter based on the final index position.

  FIG. 8 is a diagram illustrating an example of control for acquiring the second spectacle wearing parameter based on the first spectacle wearing parameter. Hereinafter, control for obtaining the second spectacle wearing parameter based on the first spectacle wearing parameter will be described. In the following explanation of analysis, a front image is taken as an example. Of course, the analysis processing of this embodiment can also be applied to the side image. FIG. 8A shows a first front image taken in the far vision state. FIG. 8B shows a second front image taken in the near vision state.

  For example, the control unit 70 causes the memory 72 to store the position of the lens lower end LT in the first captured image. For example, as illustrated in FIG. 8A, first, the control unit 70 sets a reference position (reference line) T in the first front image in the first captured image. For example, the reference position T may be set to a portion where the positional relationship with respect to the lower end of the lens is not changed even when the shooting direction is changed between the shooting position in the far vision state and the imaging position in the near vision state. For example, the center position of the straight line connecting the boxing center on the right eye side (the geometric center of the spectacle frame) and the boxing center on the left eye side, the center position of the straight line connecting the left and right eyes of the subject, glasses There is a configuration in which the center position of the bridge of the frame is set as the reference position. In the present embodiment, a case where the center position of a straight line connecting the boxing center on the right eye side and the boxing center on the left eye side is set as a reference position will be described as an example.

  For example, the control unit 70 calculates the center of boxing on the left eye side and the right eye side from the first front image by image processing. The control unit 70 sets the reference position T at the center position of the straight line connecting the calculated left and right boxing centers.

  When the reference position T is set, the control unit 70 causes the memory 72 to store distances T1 and T2 from the reference position T to the positions of the lens lower ends RLT and LLT in the X-axis direction. For example, the distance T1 is an inter-coordinate distance in the X-axis direction from the coordinates of the reference position T to the coordinates of the right eye side lens lower end position RLT. For example, the distance T2 is the inter-coordinate distance in the X-axis direction from the coordinate of the reference position T to the coordinate of the left eye side lens lower end position LLT. As described above, the control unit 70 causes the memory 72 to store the lens lower ends RLT and LLT acquired by analyzing the first front image.

  Next, when analyzing the second front image in the second photographed image, the control unit 70 displays the indices corresponding to the positions of the lens lower ends RLT and LLT obtained by analyzing the first front image on the second photographed image. It is superimposed on the position. For example, as illustrated in FIG. 8B, the control unit 70 sets the reference position TN in the second front image. The reference position TN is set in the same manner as the method for setting the reference position T in the first front image. Next, the control unit 70 sets the positions of the lens lower ends RLT and LLT.

  For example, when setting the right eye side lens lower end RLT, the control unit 70 sets the right eye side lens lower end RLT at the position of the right eye side distance T1 from the reference position TN. That is, the control unit 70 displays an index indicating the right eye side lens lower end RLT at the position of the right eye side distance T1 from the reference position TN. At this time, the position in the X-axis direction of the right-eye lens lower end RLT is set by the distance T1, and the position in the Y-axis direction is set based on the detection result of the eyeglass frame detected in the second captured image. That is, the control unit 70 sets the intersection of the distance T1 and the detected spectacle frame and the boundary portion of the lens as the right eye side lens lower end RLT. In the present embodiment, the setting of the left eye side lens lower end LLT can be performed in the same manner as the case of setting the right eye side lens lower end RLT. As described above, the control unit 70 superimposes and displays the index corresponding to the positions of the lens lower ends RLT and LLT acquired by the analysis of the first front image at the position on the second captured image.

  Note that when the shooting magnification is different between the first shooting image and the second shooting image, the control unit 70 corrects the distance from the reference position to the lower end of the lens in accordance with the shooting magnification. Thus, even when the shooting magnification in the far vision state and the shooting in the near vision state are different, the first spectacle wearing parameter can be used when analyzing the second spectacle wearing parameter.

  FIG. 9 is a diagram illustrating an example of a screen displayed on the display unit 15 after the analysis of the second captured image is completed. As illustrated in FIG. 9, for example, the control unit 70 displays captured images such as a front image 620, a left side image 621, and a right side image 622, as in the screen after the analysis of the first captured image. Let Further, the control unit 70 displays the index indicating the lens lower end RLT, LLT, the pupil position index P, and the like, similarly to the screen after the analysis of the first captured image. For example, each indicator is displayed on the display unit 15 in various display forms such as a cross mark and a line display.

  Further, for example, on the display unit 15, the eye position height index BT calculated based on the detection result, the inter-pupil distance index NPD in the near vision state, and the like are superimposed and displayed on the captured image. Further, for example, the eye position height, the interpupillary distance, and the like calculated based on the detection result are displayed as indices, and the measured values are displayed on the display screen of the display unit 15. For example, the measurement value display field 80 displayed on the display unit 15 shows measurement values such as eye position height and interpupillary distance. The second spectacle wearing parameter acquired by the analysis is stored in the memory 72. In this way, the second spectacle wearing parameter is acquired.

  In the present embodiment, the second spectacle wearing parameter has been described by taking an example of a configuration in which it is automatically detected, but the present invention is not limited to this. For example, part of the second spectacle wearing parameter (for example, pupil position information) may be detected manually. For example, in the case of manual detection, the examiner may operate the operation unit 10 while observing the captured image, and move the index displayed on the captured image to determine the position of the index. The control unit 70 may acquire the result at the position where the index is moved as the second spectacle wearing parameter.

  Further, for example, the second spectacle wearing parameter may be configured to be detected manually and automatically. For example, when the detection is performed manually and automatically, the captured image is automatically analyzed, and an index based on the detection result is displayed on the captured image as shown in FIG. Here, the examiner moves the index by operating the operation unit 10 from the position where the index displayed in the captured image is displayed, and the result at the position where the index is moved is used as the second spectacle wearing parameter. get. That is, the measurement value in the measurement value display field 80 is also changed in conjunction with the movement of the index. In addition, when the index is moved manually, it is more preferable to provide movement limitation for the index set on the second captured image based on the first spectacle wearing parameter. For example, the control unit 70 performs control so as to prohibit the movement in the X-axis direction when the index indicating the lens lower end position set on the second captured image is moved based on the first spectacle wearing parameter. That is, the control unit 70 performs control so as to maintain the distance between the reference position TN and the lower end of the lens. Thereby, since the lower end position of the lens can be set based on the first spectacle wearing parameter, it is possible to suppress a decrease in accuracy of the detection result.

  As described above, by acquiring the second spectacle wearing parameter based on the first spectacle wearing parameter, it is not necessary to perform the analysis of the second spectacle wearing parameter from the beginning, and the first spectacle wearing parameter and Measurement of the second spectacle wearing parameter can be completed. Further, as in the present embodiment, even if the captured image in the near vision state is an image captured from an oblique direction, the position of the spectacle frame can be easily detected. That is, even if the image is taken from a position different from the front position, the position of the spectacle frame can be detected with high accuracy during analysis. Accordingly, it is possible to suppress erroneous detection of the spectacle wearing parameters (second spectacle wearing parameters) in the near vision state of the subject, and it is possible to suitably obtain the near vision vision parameters.

  As described above, the control unit 70 acquires the first spectacle wearing parameter and the second spectacle wearing parameter. The acquired eyeglass parameters are used for selection of an optimum progressive lens, production of a custom lens, and the like.

<Transformation example>
In the present embodiment, an example in which an index corresponding to the first spectacle wearing parameter is displayed on the display area of the second photographed image on the display unit 15 based on the first spectacle wearing parameter is taken as an example. Although described, it is not limited to this. As the first spectacle wearing parameter, position information for defining the position of the subject's eye or eyeglass is obtained based on the first photographed image, the second photographed image is analyzed based on the position information, The configuration may be such that two spectacle wearing parameters are acquired.

  For example, the control unit 70 may be configured to apply a spectacle wearing parameter (for example, forward tilt angle, VD, frame width, etc.) detected from a captured image in the far vision state as a spectacle wearing parameter in the near vision state. As a result, it is not necessary to perform redetection at the time of near use, and the eyeglass parameters can be calculated smoothly.

  Also, for example, when acquiring position information from a captured image in the near vision state based on position information acquired from the captured image in the far vision state, the analysis range of the captured image in the near vision state is set, A configuration for performing an analysis is given. For example, the control unit 70 detects the pupil position from the captured image in the far vision state. When analyzing the captured image in the near vision state, the control unit 70 searches for the pupil position at the near vision position based on the pupil position information acquired from the captured image in the far vision state. That is, the control unit 70 sets a region to be analyzed on the image when detecting the pupil position based on the pupil position information acquired from the captured image in the far vision state. As a result, when detecting the pupil position in the near vision state of the captured image, the pupil position can be detected without analyzing the entire region of the image, and the second spectacle wearing parameters can be acquired smoothly. Can do. In the above description, detection of the pupil position is given as an example, but the present invention is not limited to this. The technique disclosed in the present embodiment can be applied when acquiring position information related to the eye or eyeglass frame of the subject. For example, acquisition of position information related to the eye or eyeglass frame of the subject includes acquisition of position information of the entire eyeglass frame, the bridge portion of the eyeglass frame, the eye of the subject, and the like.

  In this embodiment, the reference position T is set to display an index corresponding to the position information of the first captured image on the display area of the second captured image based on the position information in the first captured image. Although the configuration in which the position information is set based on the reference position has been described as an example, the configuration is not limited thereto. For example, by associating the relationship between the captured image in the far vision state and the captured image in the near vision state, an index corresponding to the position information of the first captured image is displayed on the display area of the second captured image. The structure to display is mentioned. In this case, for example, the positional relationship between a photographing optical system for far-distance (far vision state) photographing and a photographing optical system for near-distance (near vision state) photographing can be associated. By adopting such a configuration, since the captured image in the far vision state and the captured image in the near vision state are associated with each other, a predetermined position in the captured image in the far vision state is captured in the near vision state. It is possible to calculate which position in the image corresponds to. In such a configuration, the face of the subject is not changed between the photographing in the far vision state and the photographing in the near vision state so that the positional relationship of the subject's face does not change. More preferably, the structure is fixed.

  In the present embodiment, the case where each index indicating the first spectacle wearing parameter and the second spectacle wearing parameter is superimposed and displayed on the captured image has been described as an example, but the present invention is not limited thereto. Each index indicating the first spectacle wearing parameter and the second spectacle wearing parameter may be configured to be displayed on the display screen of the display unit 15.

  In this embodiment, a configuration in which image analysis processing is performed on an image captured using an optical system that changes the position of the fixation target by changing the angle of the reflection mirror 410 is given as an example. However, the present invention is not limited to this. The image analysis processing of the present embodiment can be applied to an image obtained by photographing a subject wearing spectacles. That is, the optical system for taking an image is not limited to the optical system of the present embodiment, and various optical systems may be applied.

  In this embodiment, the distance measurement optical system 200 and the near measurement optical system 300 are separately provided, but the present invention is not limited to this. It is good also as a structure by which the image of a far vision state or a near vision state is image | photographed using at least one optical system.

  Note that the technique disclosed in the present embodiment can also be applied to an apparatus that attaches an eyeglass frame to an attachment, a seal, or the like and acquires spectacle wearing parameters. For example, the technique disclosed in this embodiment is used when detecting a mark in a photographed image in which an attachment or a seal is attached to a spectacle frame and photographed.

  Note that the present invention is not limited to the apparatus described in this embodiment. For example, spectacle wearing image analysis software (program) that performs the functions of the above embodiments is supplied to a system or apparatus via a network or various storage media. A computer of the system or apparatus (for example, a CPU) can also read and execute the program.

DESCRIPTION OF SYMBOLS 1 Glasses wearing parameter measurement apparatus 5 Face support unit 10 Operation unit 15 Display part 70 Control part 72 Memory 200 Distance measurement optical system 300 Near measurement optical system 400 Optical path switching unit 500 Side imaging | photography optical system

Claims (4)

A spectacle wearing image analysis device for analyzing an image of a subject wearing spectacles and measuring a spectacle wearing parameter of the subject,
Image acquisition means for acquiring a first photographed image obtained by photographing the first state of the subject and a second photographed image obtained by photographing a second state different from the first state of the subject;
Analyzing means for obtaining first spectacle wearing parameters by analyzing the first photographed image, analyzing the second photographed image based on the first spectacle wearing parameters, and obtaining second spectacle wearing parameters; With
The analysis means uses, as the first spectacle wearing parameter, position information for defining a position of a lower end of the lens that is a boundary between the lens and the spectacle frame of the subject based on the first photographed image. The index position corresponding to the lower end position of the lens acquired from the first captured image and superimposed on the second captured image while displaying the second captured image on the display means. Is set based on the position information of the lower end of the lens, the index is superimposed on the set position on the second captured image, and the second spectacle wearing parameter is acquired based on the position of the index An image analysis apparatus for spectacle wearing. In the spectacle wearing image analysis apparatus according to claim 1,
The analysis means acquires position information in the X-axis direction of the lower end of the lens based on the first captured image, and determines the position in the X-axis direction of the index to be superimposed on the second captured image. Set based on position information of the lower end in the X-axis direction, the index is superimposed on the set position on the second captured image, and the index is moved from the position set on the second captured image 2. The spectacle wearing image analysis apparatus, wherein the second spectacle wearing parameter is acquired based on a position of the later index . A spectacle wearing image analysis method for analyzing an image of a subject wearing spectacles and measuring a spectacle wearing parameter of the subject,
An image obtaining step for obtaining a first photographed image obtained by photographing the first state of the subject and a second photographed image obtained by photographing a second state different from the first state of the subject;
Analyzing the first photographed image to obtain a first spectacle wearing parameter, analyzing the second photographed image based on the first spectacle wearing parameter, and obtaining a second spectacle wearing parameter; Then, as the first spectacle wearing parameter, position information for defining a position of a lower end of the lens that is a boundary between the lens and the spectacle frame of the subject is acquired based on the first photographed image. The second captured image is displayed on the display means, and the index corresponds to the lower end position of the lens acquired from the first captured image, and the position of the index to be superimposed on the second captured image is set based on the position information of the lower end of the lens, the index is superimposed on the position set on the second captured image, the second based on the position of the indicator An analysis step of acquiring a mirror wearing parameters,
An image analysis method for wearing spectacles, comprising: A spectacle wearing image analysis program executed in a spectacle wearing image analysis device for analyzing an image of a subject wearing spectacles and measuring a spectacle wearing parameter of the subject,
By being executed by the processor of the spectacle wearing image analysis device,
An image obtaining step for obtaining a first photographed image obtained by photographing the first state of the subject and a second photographed image obtained by photographing a second state different from the first state of the subject;
Analyzing the first photographed image to obtain a first spectacle wearing parameter, analyzing the second photographed image based on the first spectacle wearing parameter, and obtaining a second spectacle wearing parameter; Then, as the first spectacle wearing parameter, position information for defining a position of a lower end of the lens that is a boundary between the lens and the spectacle frame of the subject is acquired based on the first photographed image. The second captured image is displayed on the display means, and the index corresponds to the lower end position of the lens acquired from the first captured image, and the position of the index to be superimposed on the second captured image is set based on the position information of the lower end of the lens, the index is superimposed on the position set on the second captured image, the second based on the position of the indicator An analysis step of acquiring a mirror wearing parameters,
Is executed by the spectacle wearing image analysis apparatus.