JP5983131B2 - Diagnosis support apparatus and diagnosis support method - Google Patents

Description

  The present invention relates to a diagnosis support apparatus and a diagnosis support method.

  Recently, people with developmental disabilities are said to be on the rise. It is known that developmental disabilities are detected early and treatment begins, thereby reducing the symptoms and increasing the effect of adapting to society. In Japan as well, we aim for early detection through interviews at the age of 1 and a half.

  One characteristic of children with developmental disabilities is that they do not look at the eyes of the person they face (looks away). It is also known that children with developmental disabilities prefer geometrical images over human images (see Non-Patent Document 1).

  As a diagnostic method using the feature of not seeing the person's face-to-face image, the person's face image is shown to the examinee, and a method for diagnosing developmental disorders based on the gaze position of the examinee at that time is known (For example, refer to Patent Document 1).

  The apparatus disclosed in Patent Document 1 captures the face of the examinee with a camera when the examinee is looking at the face image of the person, and the gaze point of the examinee is the eye region and the eye in the face image. The time that coincides with other areas is measured, and a numerical value that supports screening for developmental disorders is calculated based on the measurement result.

JP 2011-206542 A

RCH GEN PSYCHIATRY / VOL 68 (NO.1), JAN 2011 `` Preference for Geometric Patterns Early in Life as a Risk Factor for Autism ''

  However, infants tend not to gaze at things with little movement, and there is a problem that it is difficult for an infant to gaze at an inspection image such as the face image described above. Furthermore, the fact that an accurate gaze point cannot be obtained leads to an inability to accurately calculate an index for diagnosis support, and there is a problem that a highly accurate evaluation cannot be performed.

  The present invention has been made in view of the above, and an object thereof is to provide a diagnosis support apparatus and a diagnosis support method capable of improving the accuracy of diagnosis evaluation.

In order to solve the above-described problems and achieve the object, the present invention is a diagnosis support apparatus that supports diagnosis of developmental disorders, and includes a first image that is an image of a person and a second image that is an image of a non-person. A display control unit for simultaneously displaying the image on the display unit, moving the first image and the second image in the display unit, and stopping the movement; and displaying the first image and the second image. And a gaze point detection unit that detects a gaze point of the examinee who receives the diagnosis, and an evaluation value based on a time during which the gaze point is moved or stopped in the area of the first image or the second image And an evaluation unit that evaluates the degree of the developmental disorder of the examinee based on whether or not is greater than a threshold value .

The present invention is also a diagnosis support method for supporting diagnosis of developmental disorders, wherein a first image that is a human image and a second image that is a non-human image are simultaneously displayed on a display unit, A display control step of moving one image and the second image in the display unit and stopping the movement; and a note of a patient who receives the diagnosis when the first image and the second image are displayed A gazing point detection step for detecting a viewpoint, and the evaluation unit determines whether an evaluation value based on a time during which the gazing point is moved or stopped in the area of the first image or the second image is greater than a threshold value. And an evaluation step for evaluating the degree of the developmental disorder of the examinee.

  According to the present invention, it is possible to improve the accuracy of detecting a gazing point and improve the accuracy of diagnostic evaluation.

FIG. 1 is a diagram illustrating a schematic configuration of a diagnosis support apparatus. FIG. 2 is a diagram for explaining a coordinate system used for processing of the diagnosis support apparatus. FIG. 3 is a block diagram illustrating an example of detailed functions of each unit illustrated in FIG. 1. FIG. 4 is a diagram showing a diagnostic image. FIG. 5A is a diagram for explaining processing of the display control unit. FIG. 5-2 is a diagram for explaining processing of the display control unit. FIG. 5C is a diagram for explaining processing of the display control unit. 5-4 is a figure for demonstrating the process of a display control part. FIG. 5-5 is a diagram for explaining processing of the display control unit. FIGS. 5-6 is a figure for demonstrating the process of a display control part. FIGS. 5-7 is a figure for demonstrating the process of a display control part. FIG. 6 is an explanatory view schematically showing a method for detecting the position of the pupil of the examinee. FIG. 7 is a diagram for explaining the processing of the evaluation unit. FIG. 8 is a flowchart showing the diagnosis support process. FIG. 9 is a flowchart showing detailed processing in the evaluation processing (step S135) shown in FIG.

  Embodiments of a diagnosis support apparatus and a diagnosis support method will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram illustrating a schematic configuration of a diagnosis support apparatus 100 according to the embodiment. The diagnosis support apparatus 100 according to the present embodiment is an apparatus that performs a test for obtaining an evaluation value that serves as an index of support for developmental disorder diagnosis by a doctor.

  The diagnosis support apparatus 100 includes a first display unit 101, a second display unit 102, a speaker 103, a stereo camera 110, infrared LED light sources 121 and 122, a drive / IF unit 130, a control unit 140, And a storage unit 150.

  The 1st display part 101 displays the image etc. which a patient who receives a diagnosis gazes at. The second display unit 102 displays the operation content of the diagnosis support apparatus 100, the diagnosis result, and the like. The first display unit 101 and the second display unit 102 are, for example, monitor screens. The speaker 103 outputs a diagnosis result or the like as a sound. In addition, the speaker 103 outputs a sound for urging the examinee to pay attention during the examination. Note that the second display unit 102 may not be provided, and in this case, the first display unit 101 displays the operation content, the diagnosis result, and the like.

  The stereo camera 110 is installed below the first display unit 101 when viewed from the examinee. The stereo camera 110 is an imaging unit that can perform stereo shooting with infrared rays, and includes a pair of cameras, a right camera 111 and a left camera 112. Hereinafter, the right camera 111 and the left camera 112 are referred to as left and right cameras 111 and 112, as appropriate.

  Around each lens of the right camera 111 and the left camera 112, infrared LED (Light Emitting Diode) light sources 121 and 122 are respectively arranged in the circumferential direction. The infrared LED light sources 121 and 122 include an inner peripheral LED and an outer peripheral LED. The inner and outer peripheral LEDs will be described later.

  The stereo camera 110 images the face of the examinee. The stereo camera 110 captures an image at a timing when infrared rays are emitted from the infrared LED light sources 121 and 122. That is, the stereo camera 110 captures an image of infrared reflected light.

  The stereo camera 110 only needs to be installed at a position where the face of the examinee can be imaged, and the installation position is not limited to the embodiment. Further, the image to be captured (hereinafter referred to as a captured image) may be an image including the pupil of the examinee, may be an image including only a part of the face including the pupil, and in addition to the face An image including other than the face may be used.

  The drive / IF unit 130 drives each unit included in the stereo camera 110. The drive / IF unit 130 functions as an interface between each unit included in the stereo camera 110 and the control unit 140.

  The control unit 140 is connected to the first display unit 101, the second display unit 102, and the drive / IF unit 130. The control unit 140 controls images to be displayed on the first display unit 101 and the second display unit 102.

  The control unit 140 also detects the gaze point of the examinee based on the captured image obtained by the stereo camera 110, and calibrates the position of the detected gaze point. The control unit 140 calculates an evaluation value for diagnosis of developmental disorder based on the detected gazing point.

  The storage unit 150 stores various information. For example, the storage unit 150 stores an image to be displayed on the first display unit 101.

  FIG. 2 is a diagram for explaining a coordinate system used for processing of the diagnosis support apparatus 100. The first display unit 101 according to the present embodiment is a rectangular screen having a long side in the horizontal direction. As shown in FIG. 2, the diagnosis support apparatus 100 uses the center position of the screen of the first display unit 101 as an origin, the Y coordinate (upward is the + direction), and the horizontal coordinate X (the first display unit 101). The process is performed in an XYZ coordinate system in which the right is the + direction and the depth is the Z coordinate (the front of the first display unit 101 is the + direction).

  FIG. 3 is a block diagram illustrating an example of detailed functions of each unit illustrated in FIG. 1. The infrared LED light source 121 includes a wavelength 1-LED 123 that is an inner peripheral LED and a wavelength 2-LED 124 that is an outer peripheral LED. The infrared LED light source 122 includes a wavelength 1-LED 125 that is an inner peripheral LED and a wavelength 2-LED 126 that is an outer peripheral LED.

  Wavelength 1-LEDs 123 and 125 emit infrared light having a wavelength 1. The wavelength 2-LEDs 124 and 126 emit infrared light having a wavelength 2. Wavelength 1 and wavelength 2 are different from each other. Wavelength 1 and wavelength 2 are, for example, a wavelength of less than 900 nm and a wavelength of 900 nm or more, respectively. When the reflected light reflected by the pupil is irradiated with infrared light having a wavelength of less than 900 nm, a bright pupil image is obtained as compared with the case where reflected light reflected by the pupil is irradiated with infrared light having a wavelength of 900 nm or more. It is because it is obtained.

  The drive / IF unit 130 includes camera IFs 131 and 132, an LED drive control unit 133, and a speaker drive unit 134. The camera IF 131 and the camera IF 132 are connected to the right camera 111 and the left camera 112, respectively. The camera IFs 131 and 132 drive the left and right cameras 111 and 112. The right camera 111 transmits a frame synchronization signal to the left camera 112 and the LED drive control unit 133.

  The LED drive control unit 133 controls light emission of the wavelength 1-LEDs 123 and 125 and the wavelength 2 -LEDs 124 and 126. Specifically, the LED drive control unit 133 causes the left and right wavelength 1 infrared light sources (wavelength 1-LED 123, wavelength 1-LED 125) to emit light in the first frame at different timings based on the frame synchronization signal. . Corresponding to this light emission timing, the left and right cameras 111 and 112 capture images. The captured image is input to the control unit 140 via the camera IFs 131 and 132.

  Similarly, the LED drive control unit 133 causes the left and right wavelength 2 infrared light sources (wavelength 2-LED 124, wavelength 2-LED 126) to emit light at different timings in the second frame. Corresponding to this light emission timing, the left and right cameras 111 and 112 capture images. The captured image is input to the control unit 140 via the camera IFs 131 and 132.

  The speaker driving unit 134 drives the speaker 103. The control unit 140 controls the entire diagnosis support apparatus 100. Specifically, the control unit 140 includes a display control unit 141, a gazing point detection unit 142, and an evaluation unit 143.

  The display control unit 141 controls display of various types of information on the first display unit 101 and the second display unit 102. For example, the display control unit 141 displays a diagnostic image on the first display unit 101. The diagnostic image is an image used for diagnosis, and specifically includes a human face image and a geometric image that is an image of a geometric pattern.

  The face image and the geometric image may be a still image or a moving image. The face image is preferably a photographed image of the mother of the examinee, but is not limited to this. For example, a photographed image of a person other than the mother may be used, and as another example, an animation image of a person may be used.

  In this embodiment, a geometric image is used as an image that a child with developmental disabilities prefers compared to a person. However, an image displayed together with a face image of a person is a face image of a person with a developmental disability. As long as the image is more preferable than the image, it is not limited to a geometric image.

  FIG. 4 is a diagram showing a diagnostic image 200. As shown in FIG. 4, the diagnostic image 200 includes a face image 210 and a geometric image 220. The display control unit 141 stops the movement after moving the face image 210 and the geometric image 220 in the diagnostic image 200 by a predetermined amount in a predetermined direction with the passage of time. The process of moving the image 210 and the geometric image 220 is repeated.

  FIGS. 5-1 to 5-7 are diagrams for explaining the processing of the display control unit 141. FIG. 5A illustrates the first display unit 101 at the start of diagnosis. The display control unit 141 displays a circular image 230 at the center of the first display unit 101 as illustrated in FIG. In this way, by displaying a circular image at the center of the first display unit 101, the gaze point of the examinee can be directed to the center of the first display unit 101 at the start of the examination.

  Subsequently, as shown in FIG. 5B, the display control unit 141 erases the circular image 230 at the center of the first display unit 101 and gradually enlarges the face image 210 while the center of the first display unit 101 is displayed. To the left area. Further, the display control unit 141 moves the geometric image 220 from the center of the first display unit 101 to the right region while gradually expanding the geometric image 220 simultaneously with the movement of the face image 210.

  Subsequently, as illustrated in FIG. 5C, the display control unit 141 stops the movement of the face image 210 when the face image 210 reaches the left region 301. Thereby, the face image 210 is displayed in the left area 301 in a stopped state. The display control unit 141 causes the geometric image 220 to reach the right region 302 of the first display unit 101 at the same time when the face image 210 reaches the left region 301 and stops the movement of the geometric image 220. As a result, the geometric image 220 is displayed in a stopped state in the right region 302.

  Subsequently, as shown in FIG. 5-4, the display control unit 141 moves the face image 210 and the geometric image 220 along the same route at the same speed. In the present embodiment, the face image 210 and the geometric image 220 move clockwise in the circumferential direction toward the first display unit 101.

  Subsequently, when the face image 210 and the geometric image 220 reach the upper region 303 and the lower region 304 of the first display unit 101, respectively, as shown in FIG. The movement of the geometric image 220 is stopped. Thereby, the face image 210 and the geometric image 220 are displayed in the upper area 303 and the lower area 304 in a stopped state, respectively.

  Further, as shown in FIG. 5-6, the display control unit 141 moves the face image 210 and the geometric image 220 in the circumferential direction clockwise at the same speed.

  Subsequently, as shown in FIG. 5-7, when the face image 210 and the geometric image 220 reach the right region 302 and the left region 301 of the first display unit 101 at the same time, the display control unit 141 moves the respective movements. The face image 210 and the geometric image 220 are displayed in the right area 302 and the left area 301, respectively.

  The display control unit 141 further follows the series of images described with reference to FIGS. 5-1 to 5-7, and the positions of the face image 210 and the geometric image 220 are the left and right of FIGS. 5-1 to 5-7. A series of images that are reversed and move in the opposite direction are displayed on the first display unit 101.

  Note that the movement path, stop position, and movement speed of the face image 210 and the geometric image 220 are set in advance by a designer or the like. Each stop position can be arbitrarily set. Further, the movement paths of the face image 210 and the geometric image 220 are not limited to the embodiment, and instead of moving along the circumferential direction, for example, on the outer frame of the first display unit 101. And may be moved in a direction along the side of the rectangle. It is preferable that the movement path and the movement speed of the face image 210 and the geometric image 220 are the same.

  In the present embodiment, the display control unit 141 controls the display positions of the face image 210 and the geometric image 220. However, as another example, the display control unit 141 is realized by the control of the display control unit 141. The video may be stored in advance in the storage unit 150 or the like, and the display control unit 141 may reproduce this video.

  Returning to FIG. 3, the gaze point detection unit 142 detects the gaze point of the examinee based on the image captured by the stereo camera 110. Thereby, it is possible to identify which region in the diagnostic image 200 the patient is gazing at.

  As a gazing point detection method by the gazing point detection unit 142, any conventionally used method can be applied. Below, the case where a test subject's viewpoint is detected using a stereo camera is demonstrated to an example similarly to the technique described in Unexamined-Japanese-Patent No. 2005-198743.

  The gazing point detection unit 142 detects the line-of-sight direction of the examinee from the image captured by the stereo camera 110. The gaze point detection unit 142 detects the line-of-sight direction of the examinee using, for example, the methods described in JP2011-206542A and JP2008-125619A. Specifically, the gazing point detection unit 142 obtains a difference between an image captured by irradiating infrared light having a wavelength 1 and an image captured by irradiating infrared light having a wavelength 2, and an image in which a pupil image is clarified. Is generated. The gazing point detection unit 142 calculates the position of the examinee's pupil by the stereo vision technique using the two images generated as described above from the images captured by the left and right cameras 111 and 112, respectively. In addition, the gazing point detection unit 142 calculates the position of the corneal reflection of the examinee using the images taken by the left and right cameras 111 and 112. Then, the left and right cameras 111 and 112 calculate a line-of-sight vector representing the line-of-sight direction of the examinee from the position of the pupil of the subject and the corneal reflection position.

  The gazing point detection unit 142 detects, for example, an intersection point between the line-of-sight vector represented in the coordinate system as illustrated in FIG. 2 and the XY plane as the gazing point of the examinee. When the gaze direction of both eyes is obtained, the gaze point may be measured by obtaining the intersection of the left and right gazes of the examinee.

  Note that the method of detecting the gaze point of the examinee is not limited to this. For example, the gaze point of the examinee may be detected by analyzing an image captured using visible light instead of infrared rays.

  FIG. 6 is an explanatory view schematically showing a method for detecting the position of the pupil of the examinee. The gaze point detection unit 142 calculates the direction of the line of sight of the examinee viewed from the right camera 111 from the position of the pupil detected by the right camera 111 and the positional relationship of corneal reflection. The gazing point detection unit 142 calculates the direction of the line of sight of the examinee as viewed from the left camera 112 from the position of the pupil detected by the left camera 112 and the positional relationship of corneal reflection. Then, the gaze point detection unit 142 calculates the position of the gaze point of the examinee in the XY coordinate system illustrated in FIG. 2 from the intersection of the obtained two line-of-sight directions.

  Returning to FIG. 3, the evaluation unit 143 is an evaluation value that serves as an index for supporting diagnosis of developmental disability based on the position of the gaze point of the examinee detected while the diagnostic image 200 is displayed by the display control unit 141. Is calculated. More specifically, the evaluation unit 143 calculates an evaluation value based on the position of the gazing point detected while the movement of the face image 210 and the geometric image 220 in the diagnostic image 200 is stopped.

  FIG. 7 is a diagram for explaining the processing of the evaluation unit 143. As shown in FIG. 7, an F area 211 that is an area centered on the face image 210 and a P area 221 that is an area centered on the geometric image 220 are defined. Then, when the gazing point in the F area 211 is detected, the evaluation unit 143 determines that the gazing point with respect to the face image 210 has been detected. The evaluation unit 143 also determines that a gazing point with respect to the geometric image 220 has been detected when a gazing point in the P area 221 is detected.

  The evaluation unit 143 further determines that the gaze point of the examinee is within the F area 211 of the face image 210 or P of the geometric image 220 from the time when the display control unit 141 stops moving the face image 210 and the geometric image 220. The time (hereinafter referred to as arrival time) until the arrival time point in the area 221 is measured. The arrival time point is a time point when the gazing point detection unit 142 detects a gazing point in the F area 211 or the P area 221. Here, the arrival time is the time from the movement stop time to the arrival time, and corresponds to the second time. While the face image 210 and the geometric image 220 are moving, the examinee moves the point of sight following either the face image 210 or the geometric image 220 according to his / her preference. The arrival time is the time from when the movement is stopped until the position of the gaze point of the examinee reaches one of the image areas corresponding to the movement stop.

  The evaluation unit 143 also measures a stop time during which the gaze point of the examinee stops in the F area 211 of the face image 210 or the P area 221 of the geometric image 220 from the time of arrival. That is, the stop time is a time for the gazing point detection unit 142 to continuously detect the gazing point in the F area 211 or the P area 221. Here, the stop time is a time during which the gazing point in the F area 211 or the P area 221 is detected continuously from the time of arrival, and corresponds to the first time.

  That is, the evaluation unit 143 measures the arrival time and the retention time for the face image 210 and the arrival time and the retention time for the geometric image 220 while the diagnostic image is displayed by the display control unit 141. When a predetermined number of frames (for example, 30 frames) is displayed per second on the first display unit 101, the evaluation unit 143 measures the arrival time and the stop time based on the number of frames.

  FIG. 8 is a flowchart illustrating a diagnosis support process performed by the diagnosis support apparatus 100. It is assumed that individual calibration has been completed prior to the diagnosis support process. In the diagnosis support process, first, the evaluation unit 143 sets 1 to the variable n (step S101). Next, the evaluation unit 143 checks whether or not the variable n is 1 (step S102). When the variable n is 1 (step S102, Yes), the display control unit 141 displays a circular image 230 as shown in FIG. 5A at the center of the first display unit 101 (step S103). This circular image 230 becomes an eye catch image.

  Next, as illustrated in FIGS. 5-2 and 5-3, the display control unit 141 moves the face image 210 to the left side of the first display unit 101 while enlarging the face image 210, and stops the left region 301. The display control unit 141 further moves the geometric image 220 to the right side of the first display unit 101 while enlarging the geometric image 220 simultaneously with the movement of the face image 210, and simultaneously moves the geometric image 220 to the right region 302 when the facial image 210 stops. Stop. Furthermore, the evaluation unit 143 resets a measurement clock for arrival measurement (step S104).

  Next, the speaker 103 outputs sound (step S105). The speaker 103 outputs words that call out, such as “Good morning”. The sound output from the speaker 103 is synchronized with the face image 210. When the face image 210 is a video, the speaker 103 outputs sound in accordance with the movement of the mouth.

  Next, when the face image 210 and the geometric image 220 stop in the left region 301 and the right region 302, respectively, the gaze point detection unit 142 detects the position of the gaze point of the examinee, and the evaluation unit 143 Based on the above, the arrival time t1F for the F area 211 and the arrival time t1P for the P area 221 are measured (step S106).

  Further, when a predetermined time has elapsed after the movement of the face image 210 and the geometric image 220 is stopped, the evaluation unit 143 further measures a stop time T1F for the F area 211 and a stop time T1P for the P area 221 (step S1). S107).

  Next, as shown in FIGS. 5-4 and 5-5, the display control unit 141 rotates and moves the face image 210 and the geometric image 220 clockwise (step S108). When 220 reaches the upper area 303 and the lower area 304, the movement is stopped. Furthermore, the evaluation unit 143 resets the measurement clock (step S109). Then, as in step S105, the speaker 103 outputs sound (step S110).

  Next, the evaluation unit 143 measures the arrival time t2F for the F area 211 of the face image 210 stopped in the upper region 303 and the arrival time t2P for the P area 221 of the geometric image 220 stopped in the lower region 304 ( Step S111). Next, the evaluation unit 143 measures a retention time T2F for the F area 211 of the face image 210 stopped in the upper region 303 and a retention time T2P for the P area 221 of the geometric image 220 stopped in the lower region 304 ( Step S112).

  In steps S113 to S117, by the same processing as in steps S108 to S112, the evaluation unit 143 determines the arrival time t3F for the F area 211 of the face image 210 stopped in the right region 302 as shown in FIG. The arrival time t3P of the geometric image 220 stopped in the left area 301 with respect to the P area 221 is measured, and further, the stopping time T3F for the F area 211 of the face image 210 stopped in the right area 302 and the geometry stopped in the left area 301. The stopping time T3P for the P area 221 of the academic image 220 is measured.

  Next, the evaluation unit 143 checks whether or not the variable n is 1 (step S118). When the variable n is 1 (step S118, Yes), 2 is set to the variable n (step S119), and the process returns to step S102.

  In step S102, when the variable n is not 1 (No in step S102), the process proceeds to step S120. Note that the variable n becomes 2 after the completion of the processing of step S103 to step S117, and the process proceeds to step S120.

  In steps S120 to S134, the face image 210 and the geometric image 220 are moved in the opposite direction to steps S103 to S117, and the arrival times of the F area 211 and the P area 221 at the respective stop positions, and the respective stop positions. The stop time of the F area 211 and the P area 221 is measured.

  That is, first, in step S120, the display control unit 141 displays a circular image 230 as shown in FIG. 5A on the first display unit 101 as in step S103 (step S120).

  Next, the display control unit 141 moves the face image 210 to the right side of the first display unit 101 while enlarging the face image 210, and stops it in the right region 302. The display control unit 141 further moves the geometric image 220 to the left side of the first display unit 101 while enlarging the geometric image 220 simultaneously with the movement of the face image 210, and simultaneously moves the geometric image 220 to the left region 301 when the facial image 210 stops. Stop. Further, the evaluation unit 143 resets a measurement clock for arrival measurement (step S121).

  Next, the speaker 103 outputs sound (step S122). Next, the evaluation unit 143 measures an arrival time t4F for the F area 211 of the face image 210 stopped in the right region 302 and an arrival time t4P for the P area 221 of the geometric image 220 stopped in the left region 301 ( Step S123).

  Next, the evaluation unit 143 measures a retention time T4F for the F area 211 of the face image 210 stopped in the right region 302 and a retention time T4P for the P area 221 of the geometric image 220 stopped in the left region 301 ( Step S124).

  Next, the display control unit 141 rotates and moves the face image 210 and the geometric image 220 counterclockwise (step S125), and when the face image 210 and the geometric image 220 reach the lower region 304 and the upper region 303, respectively. Stop moving. Furthermore, the evaluation unit 143 resets the measurement clock (step S126).

  In steps S127 to S134, the evaluation unit 143 performs the same processing as in steps S122 to S126, so that the evaluation unit 143 reaches the arrival time t5F for the F area 211 of the face image 210 stopped in the lower region 304 and the geometry stopped in the upper region 303. The arrival time t5P with respect to the P area 221 of the academic image 220 is measured, and further, the stop time T5F with respect to the F area 211 of the face image 210 stopped in the lower area 304 and the P area 221 of the geometric image 220 stopped in the upper area 303 The stop time T5P is measured.

  Subsequently, the evaluation unit 143 measures the arrival time t6F for the F area 211 of the face image 210 stopped in the right region 302 and the arrival time t6P for the P area 221 of the geometric image 220 stopped in the left region 301. Then, the stop time T6F for the F area 211 of the face image 210 stopped in the right region 302 and the stop time T6P for the P area 221 of the geometric image 220 stopped in the left region 301 are measured.

  If the variable n is not 1 in step S118, that is, if the variable n is 2 (No in step S118), the evaluation unit 143 calculates an evaluation value that serves as an index of developmental disability, and based on the evaluation value Then, the possibility of developmental disorder is evaluated (step S135). Thus, the diagnosis support process by the diagnosis support apparatus 100 is completed.

FIG. 9 is a flowchart showing detailed processing in the evaluation processing (step S135) shown in FIG. In the evaluation process (step S135), the evaluation unit 143 first calculates the total stop time (TF) for the F area 211 corresponding to the face image 210 using (Equation 1) (step S201).
TF = T1F + T2F + T3F + T4F + T5F + T6F (Formula 1)

Next, the evaluation unit 143 calculates the total stop time (TP) for the P area 221 corresponding to the geometric image 220 using (Equation 2) (step S202).
TP = T1P + T2P + T3P + T4P + T5P + T6P (Formula 2)

Next, the evaluation unit 143 calculates the total arrival time (tF) for the F area 211 using (Equation 3) (step S203).
tF = t1F + t2F + t3F + t4F + t5F + t6F (Formula 3)

Next, the evaluation unit 143 calculates the total arrival time (tP) for the P area 221 using (Equation 4) (step S204).
tP = t1P + t2P + t3P + t4P + t5P + t6P (Formula 4)

Next, the evaluation unit 143 calculates the evaluation value A using (Equation 5) (step S205).
A = TP−TF + k (tF−tP) (Formula 5)
Here, k is a coefficient of a predetermined value that weights the stop time and the arrival time.

  Next, the evaluation unit 143 compares the evaluation value A with the threshold value K (step S206). When A is larger than K (step S206, Yes), the evaluation unit 143 determines that the possibility of developmental disorder is high (step S207). When A is K or less (step S206, No), the evaluation unit 143 determines that the possibility of developmental disorder is low (step S208). Thus, the evaluation process (step S135) is completed.

  When the face image 210 and the geometric image 220 are shown to the examinee, the healthy person tends to continue to look at the face image 210, whereas in the case of a person with a developmental disorder, the geometrical It is known that the tendency to see the image 220 is high. Therefore, in the diagnosis support apparatus 100 according to the present embodiment, the face image 210 and the geometric image 220 are simultaneously displayed on the first display unit 101, and the diagnosis support for the developmental disorder depends on which image the examinee sees. It was decided to do.

  Further, particularly in infants and young children, since there is a tendency not to gaze at things with little movement, in the diagnosis support apparatus 100 according to the present embodiment, the face image 210 and the geometric image 220 displayed on the first display unit 101. The examinee is guided to gaze at the face image 210 or the geometric image 220 by appropriately moving.

  As a result, the examinee can pay close attention to the face image 210 or the geometric image 220. Therefore, in the diagnosis support apparatus 100 according to the present embodiment, an accurate gazing point position can be specified. Accurate diagnostic evaluation can be performed.

  Furthermore, in the diagnosis support apparatus 100 according to the present embodiment, the voice is output before the gaze point detection for the arrival time and the stop time measurement by the evaluation unit 143. In the case of a healthy person, when the sound is output in synchronization with the face of a person, as in the case of sound output in the diagnosis support process, there is a high tendency to see the face image 210 along with the sound. On the other hand, in the case of a person who has a possibility of developmental disorder, there is a high tendency to see the geometric image 220 even when the sound is output in this way. Therefore, as in the diagnosis support processing according to the present embodiment, the diagnosis evaluation can be performed with higher accuracy by outputting the sound before detecting the gazing point.

  As described above, the present invention has been described using the embodiment, but various changes or improvements can be added to the above embodiment.

DESCRIPTION OF SYMBOLS 100 Diagnosis support apparatus 101 1st display part 103 Speaker 110 Stereo camera 121,122 Infrared LED light source 140 Control part 141 Display control part 142 Gaze point detection part 143 Evaluation part

Claims (5)

A diagnosis support device for supporting developmental diagnosis,
A first image that is a human image and a second image that is a non-human image are simultaneously displayed on the display unit, and the first image and the second image are moved in the display unit, and the movement is stopped. A display control unit;
A gazing point detection unit for detecting a gazing point of the examinee who receives the diagnosis when the first image and the second image are displayed;
Based on whether or not an evaluation value based on a time during which the gazing point is moved or stopped in the region of the first image or the second image is greater than a threshold value , the degree of the developmental disorder of the examinee is determined. A diagnostic support apparatus comprising an evaluation unit for evaluation. The evaluation unit continues from the time when the gazing point is detected at a position within the region of the first image or the second image after the movement of the first image and the second image is stopped. Based on whether or not the evaluation value based on the first time is larger than the threshold value, the first time when the gazing point is detected at a position within the region of one image or the second image is calculated. , diagnosis support apparatus according to claim 1, characterized in that to evaluate the extent of the developmental disorders. The evaluation unit calculates a second time from a stop point when the first image and the second image are stopped to an arrival point when the gazing point is detected in the region of the first image or the second image. and, wherein said evaluation value based on the first time and the second time based on whether greater than said threshold value, according to claim 2, characterized in that to assess the extent of the developmental disorder Diagnosis support device. The display control unit moves the first image and the second image in the first direction in the display unit, and after the first display control for stopping the movement, the first image and the second image. , Performing a second display control for moving in the direction opposite to the first direction in the display unit and stopping the movement,
The evaluation unit is configured to evaluate the time based on a time during which the gazing point detected during the first display control and the second display control is moved or stopped in a region of the first image or the second image. The diagnosis support apparatus according to claim 1, wherein the degree of the developmental disorder is evaluated based on whether the value is larger than the threshold value . A diagnostic support method for supporting the diagnosis of developmental disorders,
A first image that is a human image and a second image that is a non-human image are simultaneously displayed on the display unit, and the first image and the second image are moved in the display unit, and the movement is stopped. A display control step;
A gazing point detection step of detecting a gazing point of the examinee who receives the diagnosis when the first image and the second image are displayed;
Evaluation unit, based on whether the evaluation value based on the moving or stopped time is greater than the threshold to the gaze point is the first image or the second image in the area, the development of the examinee A diagnostic support method, comprising: an evaluation step for evaluating a degree of failure.

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