WO2016165272A1 - 一种视力检测方法、装置和系统 - Google Patents

一种视力检测方法、装置和系统 Download PDF

Info

Publication number
WO2016165272A1
WO2016165272A1 PCT/CN2015/089520 CN2015089520W WO2016165272A1 WO 2016165272 A1 WO2016165272 A1 WO 2016165272A1 CN 2015089520 W CN2015089520 W CN 2015089520W WO 2016165272 A1 WO2016165272 A1 WO 2016165272A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection
picture
visual
vision
optotype
Prior art date
Application number
PCT/CN2015/089520
Other languages
English (en)
French (fr)
Inventor
杨莉
董烨飞
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/913,283 priority Critical patent/US10143368B2/en
Publication of WO2016165272A1 publication Critical patent/WO2016165272A1/zh

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
    • A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/0016—Operational features thereof
    • A61B3/0025—Operational features thereof characterised by electronic signal processing, e.g. eye models
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/0016—Operational features thereof
    • A61B3/0041—Operational features thereof characterised by display arrangements

Definitions

  • the present invention relates to the field of medical detection technologies, and in particular, to a vision detection method, apparatus and system.
  • Conventional vision detection is performed by the direction in which the subject instructs the letters on the vision detection table.
  • the existing visual acuity test charts are generally printed with the type of eye chart.
  • the illumination of the external environment that requires vision detection must be sufficient. Therefore, in order to improve the illumination condition of the vision inspection table, the vision detection table can be fixed to the surface of the light box to form a watch box, and the vision detection can be performed.
  • existing vision testing requires the inspector to manually indicate on the test meter or the meter box.
  • Embodiments of the present invention provide a vision detecting method, apparatus, and system, which realize automatic detection of visual acuity levels and reduce the complexity of operation of the existing visual acuity detection scheme.
  • a vision detection method comprising the steps of:
  • the detection picture includes at least one optotype, and determining a valid optotype for vision detection from the optotype of the detection picture according to a preset rule; acquiring an eyesight detection object for the Determining the indication information of the valid optotype of the picture; determining the orientation of the vision detection object according to the orientation indicated by the effective optotype of the at least one detection picture and the indication information of the effective optotype of the at least one detection picture of the vision detection object Vision level.
  • the method before the step of displaying the detected picture on the display screen, the method further comprises: acquiring a first distance between the vision detecting object and the display screen; the displaying screen
  • the step of displaying the detected picture includes: displaying on the display screen with the first according to a preset standard proportional relationship and the first distance a detected picture of a corresponding size; the preset standard proportional relationship includes: a standard distance between the vision detecting object and the display screen, and a standard detected picture size corresponding to the standard distance.
  • At least two detection pictures are included, each of the at least two detection pictures having different levels of visual power corresponding to the detected pictures.
  • the orientation level indicated by the effective optotype of the at least one detected picture and the indication information of the effective optotype of the at least one detected picture of the vision detecting object are determined, and the visual acuity level of the visual acuity detecting object is determined.
  • the steps include:
  • the vision detecting object Determining, by the vision detecting object, the indication information of the effective optotype in the first detection picture and the orientation indicated by the effective optotype in the first detection picture, determining the vision detection object to the at least two Whether the indication information of the valid optotype in the second detection picture in the detection picture matches the orientation indicated by the effective optotype in the second detection picture;
  • the second detection picture is the vision level and the first detection picture
  • the visual level is separated by N levels of detection pictures, and the visual level of the second detected picture is higher than the visual level of the first detected picture, and the N is a positive integer;
  • the vision detecting object Determining, by the vision detecting object, that the indication information of the effective optotype in the second detection picture does not match the orientation indicated by the effective optotype in the second detection picture, determining the vision detection object to the at least two Whether the indication information of the valid optotype in the third detection picture in the detection picture matches the orientation indicated by the effective optotype in the third detection picture, the third detection picture being the visual level and the second Detecting a detected picture adjacent to the visual level of the picture, and the visual level of the third detected picture is lower than the visual level of the second detected picture;
  • the vision detection object matches the indication information of the effective optotype in the third detection picture with the orientation indicated by the effective optotype in the third detection picture, determining the visual acuity level corresponding to the third detection picture as The vision detects the level of vision of the subject.
  • the method further includes: if the vision detecting object indicates the effective visual target in the third detected picture of the at least two detected pictures and the effective visual target in the third detected picture If the indicated orientations match, the M detection is performed by using the second detection picture and the third detection picture to determine the second inspection. Detecting a picture and a detection picture of the third detection picture that are most frequently matched by the vision detection object, M is a natural number; determining a level corresponding to the detection picture with the most matching times of the vision detection object as the vision detection The visual level of the subject.
  • the method further comprises: if the indication information of the effective optotype in the first detected picture by the vision detecting object does not match the orientation indicated by the effective optotype in the first detected picture, then:
  • the fourth The detection picture is a detection picture of P levels of the vision level and the visual level of the first detection picture, and the vision level of the fourth detection picture is lower than the visual level of the first detection picture, and the P is negative Integer
  • the vision detecting object Determining, by the vision detecting object, the indication information of the effective optotype in the fourth detection picture and the orientation indicated by the effective optotype in the fourth detection picture, determining the vision detection object to the at least two Whether the indication information of the valid optotype in the fifth detection picture in the detection picture matches the orientation indicated by the effective optotype in the fifth detection picture, the fifth detection picture being the visual level and the fourth detection Detecting a picture adjacent to the visual acuity of the picture, and the visual acuity level of the fifth detected picture is higher than the visual level of the fourth detected picture;
  • the vision detection object does not match the indication information of the valid optotype in the fifth detection picture and the orientation indicated by the effective optotype in the first detection picture, determining the visual acuity level corresponding to the fourth detection picture The visual acuity of the subject is detected for the vision.
  • the method further comprises: if the indication information of the effective visual object in the fifth detected picture does not match the orientation indicated by the effective visual target in the fifth detected picture,
  • the visual acuity level corresponding to the detection picture having the most matching times of the vision detection object is determined as the visual acuity level of the visual acuity detection target.
  • M 2 or 3.
  • the method further comprises, prior to the step of acquiring the first distance between the vision detecting object and the display screen: detecting the vision detection pair Whether the glasses are worn or not; if it is detected that the vision detecting object wears the glasses, the detection process is terminated.
  • the valid visual targets are plural, the valid visual targets are individually displayed on the display screen in a preset order.
  • the predetermined sequence is freely adjustable.
  • the indication information includes the vision
  • the detecting object sequentially instructs the valid visual targets in the detected picture according to the direction indicated by the detection order identifier.
  • the valid optotype when the valid optotype is determined, the valid optotype is highlighted, while the other non-valid optotype is in a non-highlighted state; or, when the valid optotype is determined, The effective optotype and other optotypes are highlighted, but the valid optotype is highlighted using a regular graphic such as a circle, a square, a rectangle, or the like, to distinguish it from other non-effective optotypes. .
  • a vision detecting apparatus comprising: a display unit for displaying a detected picture, the detected picture comprising at least one visual target; and a processing unit for detecting from the detection according to a preset rule An effective optotype for visual acuity is determined in the optotype of the picture; an obtaining unit, configured to acquire indication information of the effective optotype of the visual inspection object for the detected picture; the processing unit is further configured to detect the picture according to the at least one The orientation indicated by the effective optotype and the indication information of the visual acuity of the at least one detected picture of the visual acuity detection object determine the visual acuity level of the visual acuity detection object.
  • the apparatus further includes: a ranging unit, configured to acquire a first distance between the vision detecting object and the vision detecting device before the displaying unit displays the detected picture; and a picture adjusting unit And for adjusting the detection picture to a detection picture having a size corresponding to the first distance according to a preset standard proportional relationship and the first distance;
  • the display unit is further configured to display a detected picture having a size corresponding to the first distance; the preset standard proportional relationship includes: a standard between the vision detecting object and the vision detecting device The detected picture size corresponding to the standard distance.
  • the apparatus further includes: an identification unit, configured to acquire, at the distance measuring unit, a first distance between the vision detecting object and the vision detecting device Detecting whether the vision detecting object wears glasses or not; wherein the processing unit is further configured to control the vision detecting device to stop working if the identifying unit detects that the vision detecting object wears glasses.
  • a vision detection system comprising any of the above-described vision detection devices, and indication information for using the vision detection object for a valid optotype of the at least one detected picture to the vision detection The indicating unit of the device.
  • the visual acuity detecting method, device and system provided by the embodiment of the present invention, by displaying a detected picture on a display screen, and determining an effective visual target for visual acuity detection from an optotype of the detected picture according to a preset rule, acquiring visual acuity detection And determining, by the object, the indication information of the effective visual target in the picture, and determining the visual acuity of the visual acuity detection object according to the orientation indicated by the effective visual target of the at least one detected picture and the indication information of the effective visual target of the visual acuity detecting object for the at least one detected picture. .
  • the vision detecting device of the embodiment of the present invention does not need to additionally add a special detecting person, only according to the displayed orientation of the effective visual target of the detected image, and the indication information of the effective visual target by the visual acuity detecting object, that is, It can realize the automatic detection of the vision level of the vision detection object, and solves the problem that the existing vision detection scheme is complicated to operate.
  • FIG. 1 is a schematic flow chart of a vision detecting method according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of detecting a picture in a vision detecting method according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of detecting a picture in another vision detecting method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart diagram of another method for detecting vision according to an embodiment of the present invention.
  • FIG. 5(a) is a schematic flowchart diagram of another vision detecting method according to an embodiment of the present invention.
  • FIG. 5(b) is a schematic flow chart of another method for detecting vision provided by an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a vision detecting apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another vision detecting apparatus according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of another vision detecting apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a vision detecting system according to an embodiment of the present invention.
  • An embodiment of the present invention provides a vision detecting method. Referring to FIG. 1, the method includes the following steps:
  • Step 101 Display a detection image on the display screen, and determine a valid visual target for visual acuity detection from the visual target of the detected image according to a preset rule; wherein the detection image includes at least one visual target.
  • the optotype is a valid optotype for vision detection; when the detection image displayed on the display screen includes at least two optotypes, The effective optotype for vision detection is determined from the optotype of the detected picture in the order to the right, or from right to left, or from the middle to both sides.
  • the determined plurality of valid visual targets may be individually displayed on the display screen in a preset order, or may be simultaneously displayed on the display screen.
  • the preset order is freely adjustable, the orientation of the effective visual target to be presented is not fixed, and therefore, the problem that the detected object cheated by the direction of the visual eye chart is prevented.
  • the valid optotype When a valid optotype is determined, the valid optotype may be highlighted, while the other optotypes are not highlighted; or, the valid optotype and other optotypes are highlighted, but when the valid optotype is determined,
  • the effective optotype can be highlighted with regular graphics such as circles, squares, rectangles, or irregular graphics to distinguish it from other optotypes.
  • Step 102 Acquire indication information of the vision detection object for detecting a valid optotype in the picture.
  • the direction indicated by the effective optotype includes left, right, up, and down, and the vision detecting object indicates the direction indicated by the effective optotype in the detected picture.
  • the indication information includes direction indication information of the vision object to the effective optotype.
  • the indication information may be an indicator (such as a remote controller, a handle, etc.) connected to the vision detecting device by the vision detecting object, and after indicating the direction of the effective optotype in the detecting picture, sending the indication information to the indicator through the indicator
  • the vision detecting device may also actively identify the indication information of the vision detecting object for detecting the effective visual target in the picture for the visual acuity detecting device.
  • the visual acuity detecting device displays a detection order identification on the display screen, and the detection order identification is used to indicate the visual acuity detection object.
  • the effective visual target in the detected picture is indicated according to the direction indicated by the detection order identification.
  • the indication information includes information indicating that the visual acuity object indicates the valid visual target in the detected picture in accordance with the direction indicated by the detection order identification.
  • the detection sequence identification may be represented by an arrow, which may indicate a direction from left to right, or from right to left, or from the middle to the sides, and the like.
  • Step 103 Determine an eyesight level of the vision detecting object according to the orientation indicated by the effective visual target of the at least one detected picture and the indication information of the effective visual target of the at least one detected picture by the vision detecting object.
  • the visual acuity detecting device determines whether the orientation information indicated by the effective visual target indicating one of the detected pictures and the indication information of the effective visual target of the visual acuity detecting object for the at least one detected picture match each other, that is, determining that the visual acuity detecting object is for at least one detected picture Whether the indication direction of the effective optotype coincides with the orientation indicated by the corresponding effective optotype determines the visual acuity level of the visual acuity detection object.
  • the visual acuity detecting device is represented by determining a plurality of visual targets in the detected image. Whether the orientation is consistent with the orientation indicated by the vision detecting object determines the visual acuity level of the visual acuity detection object.
  • the example detecting device detects the indication orientation of the effective visual object in the visual inspection object for one piece of the detection picture and the detection If the orientations indicated by the valid optotypes in the image are the same or different, you need to switch to display the detection images of other visual acuity levels.
  • Line detection determines the level of vision of the vision test subject.
  • the visual acuity detecting device determines that the visual acuity detection target corresponds to the indication directions of all the visual targets in the detection image with the visual power level of 1.2. If the direction indicated by the optotype is the same, the detection picture with the visual power level of 1.5 is displayed. As shown in FIG. 3(b), if the visual acuity detecting device determines the indication direction of all the visual targets in the detection image with the visual power level of 1.5 for the visual acuity detection object. If the directions indicated by the corresponding optotypes are not completely the same, it is determined that the visual acuity of the visual acuity detection object is 1.2.
  • the visual acuity detecting method provided by the embodiment of the present invention, by displaying a detection image on a display screen, and determining an effective visual target for visual acuity detection from the visual target of the detected image according to a preset rule, acquiring the visual acuity detection object for detecting the image
  • the indication information of the valid optotype in the determination, and the visual acuity of the visual acuity detection object is determined according to the orientation indicated by the effective visual target of the at least one detected picture and the indication information of the effective visual target of the visual acuity detecting object for the at least one detected picture.
  • the vision detecting device of the embodiment of the present invention does not need to additionally add a special detecting person, and can also prevent the detected object from cheating by observing the direction of the visual acuity chart.
  • the automatic detection of the visual acuity of the visual acuity detection object can be realized only according to the indication information of the effective visual target of the detected picture and the indication information of the effective visual target of the visual acuity detection object, thereby solving the problem that the existing visual acuity detection scheme is complicated to operate.
  • the embodiment of the present invention provides a vision detecting method, which is applied, for example, to a vision detecting device having a display screen.
  • the method includes the following steps:
  • Step 201 Acquire a first distance between the vision detection object and the display screen.
  • the distance between the vision detecting object and the display screen can be measured by using microwave, infrared, ultrasonic or the like.
  • the identity information (such as an avatar, a fingerprint, etc.) of the identified visual acuity detection object may be stored in the visual acuity detecting device in advance, and then, when the visual acuity detecting object is performed When the vision is detected, the vision detecting device acquires the identity information of the vision detecting object and matches the pre-stored identity information of the vision detecting object, and after the identity information is successfully matched, acquires the first distance between the vision detecting object and the display screen. .
  • Step 202 Display on the display screen according to a preset standard proportional relationship and a first distance A detection picture of a size corresponding to the first distance is displayed, and a valid object for vision detection is determined from the object of the detection picture according to a preset rule.
  • the preset standard proportional relationship includes: a standard distance between the vision detecting object and the vision detecting device, and a standard detecting picture size corresponding to the standard distance.
  • the vision detecting object needs to stand at a standard distance (usually 5 m) from the standard vision detecting table to perform vision detection.
  • the vision detecting device of the present invention can display a detected picture having a size corresponding to the first distance according to the first distance between the visual acuity detecting object and the display screen.
  • the size of the standard vision detecting table is represented by A
  • the visual acuity detecting object detects that the first distance between the visual acuity detecting object and the display screen is 2.5 m
  • the visually detected object detects that the first distance between the visual acuity detection object and the display screen is 7.5 m
  • the size C of the detected picture to be displayed when the distance is 7.5 m is calculated.
  • the vision detecting device can adaptively adjust the size of the detected picture to be displayed according to the first distance.
  • Step 203 Acquire indication information of the effective visual target of the vision detection object for detecting the picture.
  • Step 204 Determine an eyesight level of the vision detecting object according to the orientation indicated by the effective visual target of the at least one detected picture and the indication information of the effective visual target of the at least one detected picture by the vision detecting object.
  • the vision detecting method obtained by the embodiment of the present invention obtains a first distance between the vision detecting object and the display screen, and displays a detected image corresponding to the first distance on the display screen, and detects from the preset rule according to the preset rule. Determining a valid optotype for vision detection in the optotype of the picture, obtaining indication information of the visual optotype for the effective optotype in the detection picture, and indicating the orientation indicated by the effective optotype of the at least one detected picture, and the visual acuity detection object The visual acuity of the visual acuity detection object is determined for the indication information of the at least one valid optotype of the detected picture.
  • the vision detecting device of the embodiment of the invention The size of the detected image to be displayed is automatically adjusted according to the first distance, and at the same time, there is no need to additionally add a special inspector, and the problem that the detected object is cheated by the direction of the visual eye chart is prevented.
  • the automatic detection of the visual acuity of the visual acuity detection object can be realized only according to the indication information of the effective visual target of the detected picture and the indication information of the effective visual target of the visual acuity detection object, thereby solving the problem that the existing visual acuity detection scheme is complicated to operate.
  • An embodiment of the present invention provides a vision detecting method, which is applied, for example, to a vision detecting device having a display screen, and the visual acuity detecting device includes at least two detection pictures, each of the at least two detection pictures. The corresponding level of vision is different.
  • the method includes the following steps:
  • Step 301 Detect whether the vision detecting object wears glasses.
  • the vision detecting device can determine whether the vision detecting object wears the glasses by detecting the degree of reflection of the light by the eye portion of the vision detecting object. For example, the vision detecting device emits a beam of light to the eye portion of the vision detecting object, and when detecting that the degree of reflection of the eye portion of the vision detecting object is greater than a preset value, determining that the vision detecting object wears the glasses; if the vision detecting object is detected; When the degree of reflection of the eye part is less than the preset value, it is judged that the vision detecting object does not wear the glasses; wherein the preset value can be set according to the range of the minimum reflection degree of the light of the different lenses.
  • the preset value can be set according to the range of the minimum reflection degree of the light of the different lenses.
  • step 302 If it is detected that the vision detecting object wears the glasses, step 302 is performed; if the detected vision detecting object is not wearing the glasses, step 303 is performed.
  • Step 302 If it is detected that the vision detecting object wears the glasses, the detection is terminated or the visual acuity detecting device is stopped.
  • Step 303 If it is detected that the vision detecting object does not wear the glasses, obtain a first distance between the vision detecting object and the display screen.
  • Step 304 Display, according to the preset standard proportional relationship and the first distance, a first detected image corresponding to the first distance on the display screen, and determine, according to a preset rule, the visual identifier from the first detected image.
  • Step 305 Acquire indication information of the effective visual target of the first detection picture by the vision detection object.
  • steps 302-305 For the details of steps 302-305, reference may be made to the corresponding ones in the first embodiment and the second embodiment. The description of the steps is not repeated here.
  • Step 306 Determine whether the indication information of the effective optotype in the first detection picture of the at least two detection pictures of the vision detection object matches the orientation indicated by the effective optotype in the first detection picture.
  • the process proceeds to step 307; if the visual acuity detecting device determines the visual acuity detecting object When the indication information of the valid optotype in the first detection picture does not match the orientation indicated by the effective optotype in the first detection picture, the process proceeds to step 312.
  • Step 307 If it matches, determine whether the indication information of the effective visual target in the second detected picture by the visual acuity detection object matches the orientation indicated by the effective visual target in the second detected picture.
  • the second detection picture is a detection picture of the N levels of the visual power level and the visual power level of the first detection picture, and the visual power level of the second detection picture is higher than the visual power level of the first detection picture, and N is a positive integer.
  • the vision detecting device determines that the indication information of the effective optotype in the second detection picture matches the orientation indicated by the effective optotype in the second detection picture, the second detection picture is regarded as the first detection picture, Proceeding to step 307, until the visual acuity detecting device determines that the visual force detection does not match the indication information of the valid visual target in the second detected picture with the orientation indicated by the effective visual target in the second detected picture, the process proceeds to step 308.
  • Step 308 If there is no match, determine whether the indication information of the effective optotype in the third detection picture by the vision detection object matches the orientation indicated by the effective optotype in the third detection picture.
  • the third detected picture is a detected picture whose visual level is adjacent to the visual level of the second detected picture, and the level of the third detected picture is lower than the level of the second detected picture.
  • the visual acuity detecting object may be determined in two ways.
  • the level of vision One way is to directly determine the level corresponding to the third detected picture as the visual power level of the vision detecting object, that is, go to step 309, as shown in FIG. 5(a).
  • Another way is to use the second detection picture and the third detection picture to detect the loop several times to reduce Less false positives, improve the accuracy of vision detection, that is, go to steps 310-311, as shown in Figure 5 (b).
  • Step 309 If matching, determine the level corresponding to the third detected picture as the visual power level of the vision detecting object.
  • Step 310 If the matching is performed, the second detection picture and the third detection picture are cyclically executed M times, and the detection pictures with the most matching times of the vision detection objects in the second detection picture and the third detection picture are determined.
  • the second detection picture and the third detection picture may be executed M times to determine the detection picture with the most matching times of the vision detection object in the second detection picture and the third detection picture.
  • Step 311 Determine a level corresponding to the detection picture with the most matching times as the visual power level of the vision detection object.
  • the visual acuity detecting device may notify the visual acuity detection object that the visual acuity detection is ended by using a voice or a manner of displaying on the screen (eg, the end of the test). You can also use the voice or display on the screen to inform the vision test object of the visual acuity of the vision test subject, such as: "Your vision is 0.8!. Of course, it is also possible to print out the visual acuity of the vision detecting object.
  • the vision detecting device detects that the user does not wear the glasses, and displays a detected picture of a corresponding size according to the first distance between the user and the display screen.
  • the first detection picture is a detection picture corresponding to an average vision level of an ordinary user.
  • the embodiment of the present invention takes the average visual acuity level as 0.6 as an example.
  • the pattern in the detection picture is the “E” character in the standard vision detection table, and the visual acuity detection device sequentially displays the valid visual targets from left to right, and the user also performs the instructions from left to right as an example, if currently The displayed visual image corresponding to the detected image is 0.6, and the visual acuity detecting device determines that the pointing direction of all the visual targets in the detected image with the visual power level of 0.6 is the same as the orientation indicated by the corresponding visual target, and displays the detected image with the visual power level of 0.8; If the visual acuity detecting device determines that the pointing direction of all the visual targets in the detected image with the visual power level of 0.8 is the same as the orientation indicated by the corresponding visual target, the detected image with the visual power level of 1.0 is displayed; if the visual acuity detecting device determines that the visual power level of the user is The detection direction of all the optotypes in the detection picture of 1.0 is the same as the orientation indicated by the corresponding optotype,
  • Detecting means determines that the user of the visual acuity of the detection level of 1.0
  • the direction of indication of all the optotypes in the picture is the same as the orientation indicated by the corresponding optotype, and the detection picture with the visual power level of 1.0 and the detection picture with the visual power level of 1.2 are detected three times. If the user can correctly indicate the detection pictures with the visual power level of 1.0, and the detection pictures with the visual power level of 1.2 cannot all be correctly indicated, the user's visual power level is determined to be 1.0.
  • the pattern in the detected picture is the “E” character in the standard vision detection table, and the visual acuity detecting device sequentially displays the valid visual target from left to right, and the user also performs the instruction from left to right as an example, if currently The displayed visual image corresponding to the detected image is 0.6, and the visual acuity detecting device determines that the pointing direction of all the visual targets in the detected image with the visual power level of 0.6 is the same as the orientation indicated by the corresponding visual target, and displays the detected image with the visual power level of 1.0; If the visual acuity detecting device determines that the pointing direction of all the visual targets in the detected image with the visual power level of 1.0 is the same as the orientation indicated by the corresponding visual target, the detected image with the visual power level of 1.5 is displayed; if the visual acuity detecting device determines that the visual power level of the user is 1.5 When the direction of indication of all the optotypes in the detection picture is not exactly the same as the orientation indicated by the corresponding opto
  • the visual acuity detecting device determines that the direction of the indication of all the optotypes in the image of the visual inspection level is 1.0 and the orientation of the corresponding optotype is exactly the same, the detection image with the visual power level of 1.0 and the detection image with the visual power level of 1.2 are used. Cycle detection 3 times. If the user can correctly indicate the detection pictures with the visual power level of 1.0, and the detection pictures with the visual power level of 1.2 cannot all be correctly indicated, the user's visual power level is determined to be 1.0.
  • the pattern in the detected picture is the "E" character in the standard visual acuity detection table
  • the visual acuity detecting device sequentially displays the valid visual target from left to right, and the user also performs the instruction from left to right as an example.
  • the currently displayed detected image corresponds to a visual power level of 0.6
  • the visual acuity detecting device determines that the pointing direction of all the visual targets in the detected image with the visual power level of 0.6 is the same as the orientation indicated by the corresponding visual target, and the detected image with the visual power level of 0.8 is displayed.
  • the visual acuity detecting device determines that the direction of indication of all the visual targets in the detected image with the visual power level of 0.8 is the same as the orientation indicated by the corresponding visual target, the detected image with the visual power level of 1.2 is displayed; if the visual acuity detecting device determines the visual level of the user If the direction of indication of all the optotypes in the 1.2 detection picture is not exactly the same as the orientation indicated by the corresponding optotype, the detection picture with the visual power level of 1.0 is displayed; if the visual acuity detecting device determines that the user has a visual power level of 1.0 detection picture When the indication direction of all the optotypes is exactly the same as the orientation indicated by the corresponding optotype, the detection image with the visual power level of 1.0 and the detection image with the visual power level of 1.2 are cyclically detected three times, and the user detects the detection image with the visual power level of 1.0. All the correct indications can be made, and the detection pictures with the visual power level of 1.2 cannot all
  • Step 312 If there is no match, determine whether the indication information of the effective optotype in the fourth detection picture by the vision detection object matches the orientation indicated by the effective optotype in the fourth detection picture.
  • the fourth detection picture is a detection picture of the P level of the visual power level and the visual level of the first detection picture, and the visual power level of the fourth detection picture is lower than the visual power level of the first detection picture, and P is a negative integer.
  • the vision detecting device determines that the indication information of the effective visual target in the fourth detected picture matches the orientation indicated by the effective visual target in the fourth detected picture, the fourth detected picture is regarded as the first detected picture, Proceeding to step 312, until the visual acuity detecting device determines that the visual acuity detection does not match the indication information of the valid visual target in the fourth detected picture with the orientation indicated by the effective visual target in the fourth detected picture, the process proceeds to step 313.
  • Step 313 If it matches, determine whether the indication information of the effective optotype in the fifth detection picture by the vision detection object matches the orientation indicated by the effective optotype in the fifth detection picture.
  • the fifth detection picture is a detection picture whose visual level is adjacent to the visual power level of the fourth detection picture, and the visual power level of the fifth detection picture is higher than the visual power level of the fourth detection picture.
  • the visual acuity detecting object may be determined in two ways.
  • the level of vision One way is to directly determine the level corresponding to the fourth detected picture as the visual power level of the vision detecting object, that is, go to step 314, as shown in FIG. 5(a).
  • Another way is to use the fourth detection picture and the fifth detection picture to detect the loop several times to reduce the false positive and improve the accuracy of the vision detection, that is, go to steps 315-316, as shown in FIG. 5(b).
  • Step 314 If there is no match, determine the level corresponding to the fourth detected picture as the visual power level of the vision detecting object.
  • Step 315 If there is no match, the fourth detection picture and the fifth detection picture are cyclically detected M times, and the detection pictures with the most matching times of the vision detection objects in the fourth detection picture and the fifth detection picture are determined.
  • the fourth detection picture and the fifth detection picture may be detected M times to determine the detection picture with the most matching times of the vision detection object in the fourth detection picture and the fifth detection picture.
  • Step 316 Determine a level corresponding to the detection picture with the most matching times as the visual power level of the vision detection object.
  • the vision detecting device detects that the user does not wear the glasses, and displays a detected picture of a corresponding size according to the first distance between the user and the display screen.
  • the first detection picture is a detection picture corresponding to an average vision level of an ordinary user.
  • the embodiment of the present invention takes the average visual acuity level as 0.6 as an example.
  • the pattern in the detected picture is the "E" character in the standard vision detection table
  • the visual acuity detecting device sequentially displays the effective visual target from left to right, and the user also performs the instruction from left to right as an example.
  • the currently displayed detected image corresponds to a visual power level of 0.6
  • the visual acuity detecting device determines that the direction of indication of all the visual targets in the detected image with the visual power level of 0.6 is not exactly the same as the orientation indicated by the corresponding visual target, and the visual power level is displayed as 0.4.
  • the visual acuity detecting device determines that the direction of indication of all the visual targets in the detected image with the visual power level of 0.4 is not exactly the same as the orientation indicated by the corresponding visual target, the detected image with the visual power level of 0.3 is displayed; if the visual acuity detecting device determines If the indication direction of all the optotypes in the detection image with the visual power level of 0.3 is not exactly the same as the orientation indicated by the corresponding optotype, the detection image with the visual power level of 0.2 is displayed; if the visual acuity detecting device determines that the user has the visual power level of 0.2 detection image When the direction of indication of all the optotypes is exactly the same as the orientation indicated by the corresponding optotype, the visual acuity level is displayed.
  • the detection picture and the visual acuity level with the visual power level of 0.2 are utilized.
  • the detection picture of 0.3 is cyclically detected 3 times, and the user can correctly indicate the detection pictures with the visual power level of 0.2, and the detection pictures with the visual power level of 0.3 cannot all be correctly indicated. Therefore, the visual level of the user is determined to be 0.2.
  • the pattern in the detection picture is the “E” character in the standard vision detection table, and the visual acuity detection device sequentially displays the effective visual target from left to right, and the user also performs the instruction from left to right as an example.
  • the currently displayed detection image corresponds to a visual acuity level of 0.6, visual acuity detection If it is determined that the indication direction of all the visual targets in the detection image with the visual power level of 0.6 is not exactly the same as the orientation indicated by the corresponding visual target, the detection image with the visual power level of 0.3 is displayed; if the visual acuity detecting device determines that the visual power level is 0.3 The direction of indication of all the optotypes in the detected picture is not exactly the same as the orientation indicated by the corresponding optotype, and the detected picture with the visual power level of 0.15 is displayed; if the visual acuity detecting device determines that the visual direction of the user is 0.15, the indication direction of all the visual targets in the detected picture is detected.
  • a detection picture with a visual power level of 0.2 is displayed; if the visual acuity detecting device determines that the user has a visual power level of 0.2, the indication direction of all the visual targets in the detection image and the orientation of the corresponding visual representation are At the same time, the detection picture with the visual power level of 0.3 is displayed; if the visual acuity detecting device determines that the indication direction of all the visual targets in the detection image of the user is not exactly the same as the orientation indicated by the corresponding visual target, the visual power level is 0.2.
  • the detection picture and the detection picture with the visual power level of 0.3 are detected cyclically 3 times. Household level to detect vision pictures 0.2 are able to correct all the instructions, but to detect the level of vision can not be fully correct picture of 0.3 indication, therefore, the user's eyesight level is determined to be 0.2.
  • the pattern in the detected picture is the "E" character in the standard visual acuity detection table
  • the visual acuity detecting device sequentially displays the effective visual target from left to right, and the user also performs an instruction in order from left to right as an example.
  • the currently displayed detected image corresponds to a visual power level of 0.6
  • the visual acuity detecting device determines that the direction of indication of all the visual targets in the detected image with the visual power level of 0.6 is not exactly the same as the orientation indicated by the corresponding visual target, and the visual power level is displayed as 0.4.
  • the visual acuity detecting device determines that the direction of indication of all the visual targets in the detected image with the visual power level of 0.4 is not exactly the same as the orientation indicated by the corresponding visual target, the detected image with the visual power level of 0.2 is displayed; if the visual acuity detecting device determines When the user has the vision level of 0.2, the indication direction of all the optotypes in the picture is exactly the same as the orientation indicated by the corresponding optotype, the detection picture with the visual power level of 0.3 is displayed; if the visual acuity detecting device determines that the user has the visual power level of 0.3, the detection picture is When the direction of indication of all the optotypes is not exactly the same as the orientation indicated by the corresponding optotype, then the view is used.
  • the detection picture with the level of 0.2 and the detection picture with the visual power level of 0.3 are detected cyclically three times.
  • the user can correctly indicate the detection pictures with the visual power level of 0.2, and the detection pictures with the visual power level of 0.3 cannot all be correctly indicated. Therefore,
  • the user's vision level is determined to be 0.2.
  • the visual acuity detecting method acquires a first distance between the visual acuity detecting object and the display screen when the visual acuity detecting object is not wearing the glasses, and displays a size corresponding to the first distance on the display screen. Detect pictures and follow the preset rules And determining, from the optotype of the detected picture, a valid optotype for visual acuity detection, obtaining indication information of the visual optic object for detecting the valid optotype in the picture, and indicating the orientation according to the effective visual object of the at least one detected picture, and The vision detecting object determines the visual acuity level of the vision detecting object for the indication information of the effective visual target of the at least one detected picture.
  • the vision detecting apparatus of the embodiment of the present invention automatically adjusts the size of the detected picture to be displayed according to the first distance, and at the same time, does not need to additionally add a special detecting person, and can also prevent the detected object from observing the visual acuity chart.
  • the automatic detection of the visual acuity of the visual acuity detection object can be realized only according to the indication information of the effective visual target of the detected picture and the indication information of the effective visual target of the visual acuity detection object, thereby solving the problem that the existing visual acuity detection scheme is complicated to operate.
  • the embodiment of the present invention provides a vision detecting device.
  • the visual acuity detecting device 60 includes a display unit 601, a processing unit 602, and an obtaining unit 603.
  • the display unit 601 is configured to display a detection image, where the detection image includes at least one visual target;
  • the processing unit 602 is configured to determine, according to a preset rule, an effective optotype for visual acuity detection from the optotype of the detected picture;
  • the obtaining unit 603 is configured to acquire indication information of the visual target of the vision detection object for detecting the picture
  • the processing unit 602 is further configured to determine the visual acuity of the visual acuity detection object according to the orientation indicated by the effective optotype of the at least one detected picture and the indication information of the effective optotype of the at least one detected picture by the visual acuity detecting object.
  • the device 60 further includes:
  • the distance measuring unit 604 is configured to acquire a first distance between the vision detecting object and the display unit before the display unit 601 displays the detected image;
  • the picture adjustment unit 605 is configured to adjust the detection picture to a detection picture having a size corresponding to the first distance according to a preset standard proportional relationship and a first distance;
  • the display unit 601 is further configured to display a detected image of a size corresponding to the first distance; wherein the preset standard proportional relationship includes: a standard distance between the vision detecting object and the vision detecting device, and a standard detection corresponding to the standard distance size of the picture.
  • the device 60 further includes:
  • the identifying unit 606 is configured to detect whether the vision detecting object wears glasses before the ranging unit 604 acquires the first distance between the vision detecting object and the display unit;
  • the processing unit 602 is further configured to control the vision detecting device to stop working if the recognition unit 606 detects that the vision detecting object wears the glasses.
  • the visual acuity detecting device displays the detected image on the display unit, and determines an effective visual target for visual acuity detection from the visual target of the detected image according to a preset rule, and acquires the visual acuity detecting object for detecting the image.
  • the indication information of the valid optotype in the determination, and the visual acuity of the visual acuity detection object is determined according to the orientation indicated by the effective visual target of the at least one detected picture and the indication information of the effective visual target of the visual acuity detecting object for the at least one detected picture.
  • the vision detecting device of the embodiment of the present invention does not need to additionally add a special detecting personnel, only according to the displayed indication information of the effective visual target of the detected picture, and the indication information of the effective visual target by the visual acuity detecting object, that is, The automatic detection of the vision level of the vision detection object can be realized, and the problem that the existing vision detection scheme is complicated to operate is solved.
  • the embodiment of the present invention further provides a vision detection system.
  • the vision detection system 100 includes: the vision detection device 60 illustrated in any of FIGS. 6-8, and an indication unit 90.
  • the indication unit 90 is configured to send the vision detection target to the vision detection device for the indication information of the effective optotype of the at least one detected picture.
  • the indicating unit 90 can be connected to the vision detecting device 60 by wireless or wired.
  • the indicating unit 90 can be a remote controller, a handle, a touch screen or the like.
  • the vision detecting system displays the detected image on the display screen, and determines the effective visual target for visual acuity detection from the visual target of the detected image according to a preset rule, and acquires the visual acuity detection sent by the control unit. And determining, by the object, the indication information of the effective visual target in the picture, and determining the visual acuity of the visual acuity detection object according to the orientation indicated by the effective visual target of the at least one detected picture and the indication information of the effective visual target of the visual acuity detecting object for the at least one detected picture. .
  • the vision detecting device of the embodiment of the present invention does not need to additionally add a special detecting personnel, only according to the displayed indication information of the effective visual target of the detected picture, and the indication information of the effective visual target by the visual acuity detecting object, that is, The automatic detection of the vision level of the vision detection object can be realized, and the problem that the existing vision detection scheme is complicated to operate is solved.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • Including the above method The steps of the embodiment; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Signal Processing (AREA)
  • Eye Examination Apparatus (AREA)
  • User Interface Of Digital Computer (AREA)
  • Image Analysis (AREA)

Abstract

提供一种视力检测方法、装置（60）和系统（100），涉及医学检测技术领域，实现对视力级别的自动化检测，降低现有视力检测方案操作复杂的问题。该方法应用于具有显示屏幕（601）的视力检测装置（60）中，包括：在所述显示屏幕（601）上显示检测图片，所述检测图片包括至少一个视标，并按照预设规则从所述检测图片的视标中确定出用于视力检测的有效视标；获取视力检测对象针对所述检测图片的有效视标的指示信息；根据至少一个检测图片的有效视标所表示的方位、以及所述视力检测对象针对所述至少一个检测图片的有效视标的指示信息，确定所述视力检测对象的视力级别。所述检测方法、装置（60）和系统（100）应用于视力检测技术中。

Description

一种视力检测方法、装置和系统 技术领域
本发明涉及医学检测技术领域，尤其涉及一种视力检测方法、装置和系统。
背景技术
传统的视力检测都是通过被检测者指示视力检测表上的字母的方向来进行的。现有的使用的视力检测表一般都是印刷的那种视力表。而且，还要求进行视力检测的外界环境的照明必须足够。因此，为了提高视力检测表的照明条件，可以将该视力检测表固定在灯箱的表面形成表箱，进行视力检测。而且，现有的视力检测都需要检测人员手动在检测表或者表箱上进行指示。
如果检测人员手动在检测表或者表箱上指示时出现指示位置不明确，则容易出现得到的检测结果不准确的问题；同时，由于需要手动指示实际操作起来比较麻烦，人力成本较大。
发明内容
本发明的实施例提供一种视力检测方法、装置和系统，实现对视力级别的自动化检测，降低现有视力检测方案操作复杂的问题。
为达到上述目的，本发明的实施例采用如下技术方案：
在第一方面，提出了一种视力检测方法，所述方法包括以下步骤：
在显示屏幕上显示检测图片，所述检测图片包括至少一个视标，并按照预设规则从所述检测图片的视标中确定出用于视力检测的有效视标；获取视力检测对象针对所述检测图片的有效视标的指示信息；根据至少一个检测图片的有效视标所表示的方位、以及所述视力检测对象针对所述至少一个检测图片的有效视标的指示信息，确定所述视力检测对象的视力级别。
根据优选实施例，在所述在显示屏幕上显示检测图片的步骤之前，所述方法还包括：获取所述视力检测对象与所述显示屏幕之间的第一距离；所述在所述显示屏幕上显示检测图片的步骤包括：根据预设的标准比例关系和所述第一距离，在所述显示屏幕上显示具有与所述第 一距离相对应尺寸的检测图片；所述预设的标准比例关系包括：所述视力检测对象与所述显示屏幕之间的标准距离、以及对应于所述标准距离的标准检测图片尺寸。
根据优选实施例，包括至少两个检测图片，所述至少两个检测图片中每个检测图片所对应的视力级别不同。
根据优选实施例，所述根据至少一个检测图片的有效视标所表示的方位、以及所述视力检测对象针对所述至少一个检测图片的有效视标的指示信息，确定所述视力检测对象的视力级别的步骤包括：
确定所述视力检测对象对所述至少两个检测图片中的第一检测图片中的有效视标的指示信息是否与所述第一检测图片中的有效视标所表示的方位相匹配；
若所述视力检测对象对所述第一检测图片中的有效视标的指示信息与所述第一检测图片中有效视标所表示的方位相匹配，则确定所述视力检测对象对所述至少两个检测图片中的第二检测图片中有效视标的指示信息是否与所述第二检测图片中有效视标所表示的方位相匹配；所述第二检测图片为视力级别与所述第一检测图片的视力级别相隔N个级别的检测图片，且所述第二检测图片的视力级别高于所述第一检测图片的视力级别，所述N为正整数；
若所述视力检测对象对所述第二检测图片中的有效视标的指示信息与所述第二检测图片中有效视标所表示的方位不匹配，则确定所述视力检测对象对所述至少两个检测图片中的第三检测图片中的有效视标的指示信息是否与所述第三检测图片中的有效视标所表示的方位相匹配，所述第三检测图片为视力级别与所述第二检测图片的视力级别相邻的检测图片，且所述第三检测图片的视力级别低于所述第二检测图片的视力级别；
若所述视力检测对象对第三检测图片中有效视标的指示信息与所述第三检测图片中有效视标所表示的方位相匹配，则将所述第三检测图片所对应的视力级别确定为所述视力检测对象的视力级别。
根据优选实施例，所述方法还包括，若所述视力检测对象对所述至少两个检测图片中的第三检测图片中的有效视标的指示信息与所述第三检测图片中的有效视标所表示的方位相匹配，则：利用所述第二检测图片和所述第三检测图片循环执行M次检测，确定出所述第二检 测图片和所述第三检测图片中被所述视力检测对象匹配次数最多的检测图片，M为自然数；将被所述视力检测对象匹配次数最多的检测图片所对应的级别确定为所述视力检测对象的视力级别。
根据进一步优选实施例，所述方法还包括，若所述视力检测对象对所述第一检测图片中的有效视标的指示信息与所述第一检测图片中有效视标所表示的方位不匹配，则：
确定所述视力检测对象对所述至少两个检测图片中的第四检测图片中有效视标的指示信息是否与所述第四检测图片中的有效视标所表示的方位相匹配；所述第四检测图片为视力级别与所述第一检测图片的视力级别相隔P个级别的检测图片，且所述第四检测图片的视力级别低于所述第一检测图片的视力级别，所述P为负整数；
若所述视力检测对象对所述第四检测图片中的有效视标的指示信息与所述第四检测图片中有效视标所表示的方位相匹配，则确定所述视力检测对象对所述至少两个检测图片中的第五检测图片中的有效视标的指示信息是否与所述第五检测图片中有效视标所表示的方位相匹配，所述第五检测图片为视力级别与所述第四检测图片的视力级别相邻的检测图片，且所述第五检测图片的视力级别高于所述第四检测图片的视力级别；
若所述视力检测对象对第五检测图片中的有效视标的指示信息与所述第一检测图片中有效视标所表示的方位不匹配，则将所述第四检测图片所对应的视力级别确定为所述视力检测对象的视力级别。
根据进一步优选实施例，所述方法还包括，若所述视力检测对象对第五检测图片中有效视标的指示信息与所述第五检测图片中有效视标所表示的方位不匹配，则：
利用所述第四检测图片和所述第五检测图片循环执行M次检测，确定所述第四检测图片和所述第五检测图片中被所述视力检测对象匹配次数最多的检测图片；
将被所述视力检测对象匹配次数最多的检测图片所对应的视力级别确定为所述视力检测对象的视力级别。
根据进一步优选实施例，M＝2或3。
根据优选实施例，所述方法还包括，在所述获取所述视力检测对象与所述显示屏幕之间的第一距离的步骤之前：检测所述视力检测对 象是否佩戴眼镜；若检测到所述视力检测对象佩戴眼镜，则终止检测过程。
根据优选实施例，若所述有效视标为多个时，将所述有效视标按照预设顺序单个显示在所述显示屏幕上。
根据进一步优选实施例，所述预设顺序是自由可调的。
根据优选实施例，若所述有效视标为多个时，将所述有效视标同时显示在所述显示屏幕上，并且在显示屏幕上显示检测顺序标识；所述指示信息中包括所述视力检测对象按照所述检测顺序标识指示的方向对所述检测图片中的有效视标进行依次指示的信息。
根据优选实施例，当确定出所述有效视标时，使所述有效视标处于高亮状态，而其他非有效视标处于非高亮状态；或者，当确定出所述有效视标时，使所述有效视标和其他视标同处于高亮状态，但使用圆形、正方形、矩形等规则图形或者不规则的图形将所述有效视标进行突出显示，以区别于其他非有效视标。
在另一方面，提出了一种视力检测装置，所述装置包括：显示单元，用于显示检测图片，所述检测图片包括至少一个视标；处理单元，用于按照预设规则从所述检测图片的视标中确定出用于视力检测的有效视标；获取单元，用于获取视力检测对象针对所述检测图片的有效视标的指示信息；所述处理单元，还用于根据至少一个检测图片的有效视标所表示的方位、以及所述视力检测对象针对所述至少一个检测图片的有效视标的指示信息，确定所述视力检测对象的视力级别。
根据优选实施例，所述装置还包括：测距单元，用于在所述显示单元显示检测图片之前，获取所述视力检测对象与所述视力检测装置之间的第一距离；以及图片调整单元，用于根据预设的标准比例关系和所述第一距离，将所述检测图片调整为具有与所述第一距离相对应的尺寸的检测图片；
其中，所述显示单元进一步用于显示具有与所述第一距离相对应的尺寸的检测图片；所述预设的标准比例关系包括：所述视力检测对象与所述视力检测装置之间的标准距离与所述标准距离相对应的检测图片尺寸。
根据优选实施例，所述装置还包括：识别单元，用于在所述测距单元获取所述视力检测对象与所述视力检测装置之间的第一距离之 前，检测所述视力检测对象是否佩戴眼镜；其中，所述处理单元进一步用于若所述识别单元检测到所述视力检测对象佩戴眼镜，则控制所述视力检测装置停止工作。
在另一方面，提出了一种视力检测系统，包括上述任一种视力检测装置、以及用于将所述视力检测对象针对所述至少一个检测图片的有效视标的指示信息发送给所述视力检测装置的指示单元。
本发明的实施例提供的视力检测方法、装置和系统，通过在显示屏幕上显示检测图片，并按照预设规则从检测图片的视标中确定出用于视力检测的有效视标，获取视力检测对象针对检测图片中的有效视标的指示信息，并根据至少一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息，确定视力检测对象的视力级别。与现有技术相比，本发明实施例的视力检测装置不需要额外增加专门的检测人员，仅根据所显示的检测图片的有效视标的表示方位、以及视力检测对象对有效视标的指示信息，即可实现对视力检测对象的视力级别的自动化检测，解决了现有视力检测方案操作复杂的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的实施例提供的一种视力检测方法的流程示意图；
图2为本发明的实施例提供的一种视力检测方法中检测图片的示意图；
图3为本发明的实施例提供的另一种视力检测方法中检测图片的示意图；
图4为本发明的实施例提供的另一种视力检测方法的流程示意图；
图5(a)为本发明的实施例提供的另一种视力检测方法的流程示意图；
图5(b)为本发明的实施例提供的另一种视力检测方法的流程示意 图；
图6为本发明的实施例提供的一种视力检测装置的结构示意图；
图7为本发明的实施例提供的另一种视力检测装置的结构示意图；
图8为本发明的实施例提供的另一种视力检测装置的结构示意图；
图9为本发明的实施例提供的一种视力检测系统的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的实施例提供一种视力检测方法，参照图1所示，该方法包括以下步骤：
步骤101：在显示屏幕上显示检测图片，并按照预设规则从检测图片的视标中确定出用于视力检测的有效视标；其中，检测图片中包括至少一个视标。
具体地，当显示屏幕上显示的检测图片包含一个视标时，该视标为用于视力检测的有效视标；当显示屏幕上显示的检测图片包含至少两个视标时，可按照从左到右、或者从右到左、或者从中间到两边的顺序从检测图片的视标中确定出用于视力检测的有效视标。可将确定出的多个有效视标按照预设顺序单个显示在显示屏幕上，也可以同时显示在显示屏幕上。
因为这个预设顺序是自由可调的，所欲出现的有效视标的方位也不是固定的，因此，还可以防止被检测对象凭记忆视力表视标的方向而作弊的问题。
当确定出有效视标时，有效视标可以处于高亮状态，而其他视标处于非高亮状态；或者，有效视标和其他视标同处于高亮状态，但在确定出有效视标时可以用圆形、正方形、矩形等规则图形或者不规则的图形将有效视标进行突出显示，以区别于其他视标。
步骤102、获取视力检测对象针对检测图片中有效视标的指示信息。
具体地，参照现有的用于视力检测的视力表(E)，有效视标所表示的方向包括左、右、上、下，视力检测对象针对检测图片中有效视标所表示的方向进行指示，该指示信息中包含有视力检测对象对有效视标的方向指示信息。
其中，该指示信息可以为视力检测对象利用与视力检测装置连接的指示器(如遥控器、手柄等)，在对检测图片中的有效视标进行方向指示后，通过指示器将指示信息发送给视力检测装置；也可以为视力检测装置主动识别视力检测对象针对检测图片中有效视标的指示信息。
根据步骤101中所述，当检测图片中用于视力检测的多个有效视标同时显示在显示屏幕上时，视力检测装置在显示屏幕上显示检测顺序标识，检测顺序标识用于指示视力检测对象按照检测顺序标识所指示的方向对检测图片中的有效视标进行指示。这样，指示信息包括视力检测对象按照检测顺序标识所指示的方向对检测图片中的有效视标进行指示的信息。该检测顺序标识可以用箭头进行表示，该箭头指示的方向可以是从左到右、或者从右到左、或者从中间往两边等。
步骤103、根据至少一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息，确定视力检测对象的视力级别。
具体地，视力检测装置根据指示一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息是否相互匹配，即判断视力检测对象针对至少一个检测图片的有效视标的指示方向是否与相应的有效视标所表示的方位一致，来确定视力检测对象的视力级别。
如图2所示，当显示屏幕上显示的检测图片中包含所有级别的视标时(以现有标准视力检测表为例)，视力检测装置通过判定该检测图片中的多个视标所表示的方位是否与视力检测对象所指示的方位是否一致，确定视力检测对象的视力级别。
当包含有至少两个检测图片，且每个检测图片所对应的视力级别不同时，那么，当示例检测装置在检测到视力检测对象针对一张检测图片中的有效视标的指示方位与该张检测图片中的有效视标所表示的方位相同或者不同时，则需要切换显示其他视力级别的检测图片以进 行检测，确定视力检测对象的视力级别。
示例的，若当前显示屏幕显示的视力级别为1.2的检测图片，如图3(a)所示，视力检测装置确定视力检测对象针对视力级别为1.2的检测图片中所有视标的指示方向均与对应的视标所表示的方向相同，则显示视力级别为1.5的检测图片，如图3(b)所示，若视力检测装置确定视力检测对象针对视力级别为1.5的检测图片中所有视标的指示方向均与对应的视标所表示的方向不完全相同，则确定视力检测对象的视力级别为1.2。
本发明的实施例提供的视力检测方法，通过在显示屏幕上显示检测图片，并按照预设规则从检测图片的视标中确定出用于视力检测的有效视标，获取视力检测对象针对检测图片中的有效视标的指示信息，并根据至少一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息，确定视力检测对象的视力级别。与现有技术相比，本发明实施例的视力检测装置不需要额外增加专门的检测人员，还可以防止被检测对象凭记忆视力表视标的方向而作弊的问题。仅根据所显示的检测图片的有效视标的指示信息、以及视力检测对象对有效视标的指示信息，即可实现对视力检测对象视力级别的自动化检测，解决了现有视力检测方案操作复杂的问题。
实施例二
本发明实施例提供了一种视力检测方法，该方法例如应用于具有显示屏幕的视力检测装置中，参照图4所示，该方法包括以下步骤：
步骤201、获取视力检测对象与显示屏幕之间的第一距离。
具体地，可以采用微波、红外、超音波等技术对视力检测对象与显示屏幕之间的距离进行测量。
可选地，为了保证对每个视力检测对象与其视力检测级别的匹配，可以预先将标识视力检测对象的身份信息(如头像、指纹等)存储在视力检测装置中，之后，当视力检测对象进行视力检测时，视力检测装置通过获取视力检测对象的身份信息，并与预先存储的视力检测对象的身份信息进行匹配，在身份信息匹配成功后，获取视力检测对象与显示屏幕之间的第一距离。
步骤202、根据预设的标准比例关系和第一距离，在显示屏幕上显 示与第一距离相对应尺寸的检测图片，并按照预设规则从检测图片的视标中确定出用于视力检测的有效视标。
其中，预设的标准比例关系包括：视力检测对象与视力检测装置之间的标准距离、以及与该标准距离相对应的标准检测图片尺寸。
现有技术中，视力检测对象需站在与标准视力检测表相距标准距离(一般为5m)的位置处，才能进行视力检测。而本发明中的视力检测装置可以根据视力检测对象与显示屏幕之间的第一距离，显示具有与第一距离相对应尺寸的检测图片。示例地，若标准视力检测表的尺寸用A表示，当视力检测对象检测到视力检测对象与显示屏幕之间的第一距离为2.5m时，根据预设的标准比例关系，即2.5/B＝5/A，计算出距离2.5m时需显示的检测图片的尺寸B；当视力检测对象检测到视力检测对象与显示屏幕之间的第一距离为7.5m时，根据预设的标准比例关系，即7.5/C＝5/A，计算出距离7.5m时需显示的检测图片的尺寸C。
根据上述描述可知，当视力检测对象与显示屏幕之间的第一距离小于标准距离时，显示屏幕上显示的检测图片尺寸变小；当视力检测对象与显示屏幕之间的第一距离大于标准距离时，显示屏幕上显示的检测图片尺寸变大。这样，视力检测装置可以根据第一距离，适应性地调节所要显示的检测图片的尺寸大小。
步骤203、获取视力检测对象针对检测图片的有效视标的指示信息。
步骤204、根据至少一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息，确定视力检测对象的视力级别。
对于步骤203和步骤204的细节，可以参考实施例一中步骤103和步骤104所示，此处不再赘述。
本发明的实施例提供的视力检测方法，通过获取视力检测对象与显示屏幕之间的第一距离，且在显示屏幕上显示与第一距离相对应尺寸的检测图片，并按照预设规则从检测图片的视标中确定出用于视力检测的有效视标，获取视力检测对象针对检测图片中的有效视标的指示信息，并根据至少一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息，确定视力检测对象的视力级别。与现有技术相比，本发明实施例的视力检测装 置根据第一距离自动调节所要显示的检测图片的尺寸，同时，不需要额外增加专门的检测人员，还可以防止被检测对象凭记忆视力表视标的方向而作弊的问题。仅根据所显示的检测图片的有效视标的指示信息、以及视力检测对象对有效视标的指示信息，即可实现对视力检测对象视力级别的自动化检测，解决了现有视力检测方案操作复杂的问题。
实施例三
本发明实施例提供了一种视力检测方法，该方法例如应用于具有显示屏幕的视力检测装置中，且视力检测装置中包括至少两个检测图片，至少两个检测图片中中的每个检测图片所对应的视力级别不同。参照图5(a)和图5(b)所示，该方法包括以下步骤：
步骤301、检测视力检测对象是否佩戴眼镜。
具体地，视力检测装置可以通过检测视力检测对象的眼睛部位对光线的反光程度，来判断视力检测对象是否佩戴眼镜。示例地，视力检测装置发射一束光线至视力检测对象的眼睛部位，当检测到视力检测对象的眼睛部位的反光程度大于预设值时，则判断视力检测对象佩戴眼镜；若检测到视力检测对象眼睛部位的反光程度小于预设值时，则判断视力检测对象没有佩戴眼镜；其中，预设值可以根据各种不同镜片对光线的最低反光程度的范围来设置。当然，能够检测用户是否佩戴有眼镜的其它方案也是可行的，此处不作唯一的限定。
若检测到视力检测对象佩戴眼镜，则执行步骤302；若检测视力检测对象未佩戴眼镜，则执行步骤303。
步骤302、若检测到视力检测对象佩戴眼镜，则终止检测或控制视力检测装置停止工作。
步骤303、若检测到视力检测对象未佩戴眼镜，则获取视力检测对象与显示屏幕之间的第一距离。
步骤304、根据预设的标准比例关系和第一距离，在显示屏幕上显示与第一距离相对应尺寸的第一检测图片，并按照预设规则从第一检测图片的视标中确定出用于视力检测的有效视标。
步骤305、获取视力检测对象针对第一检测图片的有效视标的指示信息。
对于步骤302-305的细节，可以参考实施例一和实施例二中相对应 的步骤描述，在此不再赘述。
步骤306、确定视力检测对象对至少两个检测图片中第一检测图片中的有效视标的指示信息是否与第一检测图片中有效视标所表示的方位相匹配。
若视力检测装置确定视力检测对象对第一检测图片中的有效视标的指示信息与第一检测图片中有效视标所表示的方位相匹配时，转至步骤307；若视力检测装置确定视力检测对象对第一检测图片中的有效视标的指示信息与第一检测图片中有效视标所表示的方位不匹配时，转至步骤312。
步骤307、若匹配，则确定视力检测对象对第二检测图片中有效视标的指示信息是否与第二检测图片中有效视标所表示的方位相匹配。
其中，第二检测图片为视力级别与第一检测图片的视力级别相隔N个级别的检测图片，且第二检测图片的视力级别高于第一检测图片的视力级别，N为正整数。
若视力检测装置确定视力检测对象对第二检测图片中的有效视标的指示信息与第二检测图片中有效视标所表示的方位相匹配时，则将第二检测图片视为第一检测图片，继续执行步骤307，直至视力检测装置确定视力检测对第二检测图片中的有效视标的指示信息与第二检测图片中有效视标所表示的方位不匹配时，转至步骤308。
步骤308、若不匹配，则确定视力检测对象对第三检测图片中有效视标的指示信息是否与第三检测图片中有效视标所表示的方位相匹配。
其中，第三检测图片为视力级别与第二检测图片的视力级别相邻的检测图片，且第三检测图片的级别低于第二检测图片的级别。
若视力检测装置确定视力检测对象对第三检测图片中的有效视标的指示信息与第三检测图片中有效视标所表示的方位不匹配时，则将第三检测图片视为第二检测图片，返回执行步骤308，直至视力检测装置确定视力检测对象对第三检测图片中的有效视标的指示信息与第三检测图片中有效视标所表示的方位匹配时，可以采用两种方式确定视力检测对象的视力级别。一种方式是直接将第三检测图片所对应的级别确定为视力检测对象的视力级别，即转至步骤309，如图5(a)所示。另一种方式是利用第二检测图片和第三检测图片循环检测几次，以减 少误判，提高视力检测的准确性，即转至步骤310-311，如图5(b)所示。
步骤309、若匹配，则将第三检测图片所对应的级别确定为视力检测对象的视力级别。
步骤310、若匹配，则利用第二检测图片和第三检测图片循环执行M次，确定出第二检测图片和第三检测图片中被视力检测对象匹配次数最多的检测图片。
为了减少误判的概率，可以利用第二检测图片和第三检测图片循环执行M次，以确定出第二检测图片和第三检测图片中被视力检测对象匹配次数最多的检测图片。
步骤311、将匹配次数最多的检测图片所对应的级别确定为视力检测对象的视力级别。
当视力检测对象的视力级别确定后，视力检测装置可以采用语音或者在屏幕上显示的方式(如：测试结束)，告知视力检测对象视力检测结束。也可以采用语音或者在屏幕上显示的方式将视力检测对象的视力级别告知视力检测对象，如：“您的视力为0.8！”。当然，也可以打印输出视力检测对象的视力级别。
下面，列举一个具体的实现方式。具体地，视力检测装置检测到用户未佩戴眼镜，且根据用户与显示屏幕之间的第一距离显示相应尺寸的检测图片。第一检测图片为普通用户的平均视力水平所对应的检测图片。本发明实施例以平均视力水平为0.6为例。
以N＝1，检测图片中的图案为标准视力检测表中的“E”字，视力检测装置从左到右依次显示有效视标，用户也按照从左到右顺序进行指示为例，若当前显示的检测图片对应的视力级别为0.6，视力检测装置确定用户对视力级别为0.6的检测图片中所有视标的指示方向与对应的视标表示的方位相同，则显示视力级别为0.8的检测图片；若视力检测装置确定用户对视力级别为0.8的检测图片中所有视标的指示方向与对应的视标表示的方位相同，则显示视力级别为1.0的检测图片；若视力检测装置确定用户对视力级别为1.0的检测图片中所有视标的指示方向与对应的视标表示的方位相同，则显示视力级别为1.2的检测图片；若视力检测装置确定用户对视力级别为1.2检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同时，则显示视力级别为1.0的检测图片，若视力检测装置确定用户对视力级别为1.0的检测 图片中所有视标的指示方向与对应的视标表示的方位相同，则利用视力级别为1.0的检测图片和视力级别为1.2的检测图片循环检测3次。若用户对视力级别为1.0的检测图片均能够全部正确指示，而对视力级别为1.2的检测图片不能全部正确指示，因此，将用户的视力级别确定为1.0。
以N＝2，检测图片中的图案为标准视力检测表中的“E”字，视力检测装置从左到右依次显示有效视标，用户也按照从左到右顺序进行指示为例，若当前显示的检测图片对应的视力级别为0.6，视力检测装置确定用户对视力级别为0.6的检测图片中所有视标的指示方向与对应的视标表示的方位相同，则显示视力级别为1.0的检测图片；若视力检测装置确定用户对视力级别为1.0的检测图片中所有视标的指示方向与对应的视标表示的方位相同，则显示视力级别为1.5的检测图片；若视力检测装置确定用户对视力级别为1.5检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同时，则显示视力级别为1.2的检测图片；若视力检测装置确定用户对视力级别为1.2检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同时，则显示视力级别为1.0的检测图片；若视力检测装置确定用户对视力级别为1.0检测图片中所有视标的指示方向与对应的视标表示的方位完全相同时，则利用视力级别为1.0的检测图片和视力级别为1.2的检测图片循环检测3次。若用户对视力级别为1.0的检测图片均能够全部正确指示，而对视力级别为1.2的检测图片不能全部正确指示，因此，将用户的视力级别确定为1.0。
以N为随机数，检测图片中的图案为标准视力检测表中的“E”字，视力检测装置从左到右依次显示有效视标，用户也按照从左到右顺序进行指示为例，若当前显示的检测图片对应的视力级别为0.6，视力检测装置确定用户对视力级别为0.6的检测图片中所有视标的指示方向与对应的视标表示的方位相同，则显示视力级别为0.8的检测图片；若视力检测装置确定用户对视力级别为0.8的检测图片中所有视标的指示方向与对应的视标表示的方位相同，则显示视力级别为1.2的检测图片；若视力检测装置确定用户对视力级别为1.2检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同时，则显示视力级别为1.0的检测图片；若视力检测装置确定用户对视力级别为1.0检测图片 中所有视标的指示方向与对应的视标表示的方位完全相同时，则利用视力级别为1.0的检测图片和视力级别为1.2的检测图片循环检测3次，用户对视力级别为1.0的检测图片均能够全部正确指示，而对视力级别为1.2的检测图片不能全部正确指示，因此，将用户的视力级别确定为1.0。
步骤312、若不匹配，则确定视力检测对象对第四检测图片中有效视标的指示信息是否与第四检测图片中有效视标所表示的方位相匹配。
其中，第四检测图片为视力级别与第一检测图片的视力级别相隔P个级别的检测图片，且第四检测图片的视力级别低于第一检测图片的视力级别，P为负整数。
若视力检测装置确定视力检测对象对第四检测图片中的有效视标的指示信息与第四检测图片中有效视标所表示的方位相匹配时，则将第四检测图片视为第一检测图片，继续执行步骤312，直至视力检测装置确定视力检测对第四检测图片中的有效视标的指示信息与第四检测图片中有效视标所表示的方位不匹配时，转至步骤313。
步骤313、若匹配，则确定视力检测对象对第五检测图片中有效视标的指示信息是否与第五检测图片中有效视标所表示的方位相匹配。
其中，第五检测图片为视力级别与第四检测图片的视力级别相邻的检测图片，且第五检测图片的视力级别高于第四检测图片的视力级别。
若视力检测装置确定视力检测对象对第五检测图片中的有效视标的指示信息与第五检测图片中有效视标所表示的方位不匹配时，则将第五检测图片视为第四检测图片，继续执行步骤313，直至视力检测装置确定视力检测对象对第五检测图片中的有效视标的指示信息与第五检测图片中有效视标所表示的方位匹配时，可以采用两种方式确定视力检测对象的视力级别。一种方式是直接将第四检测图片所对应的级别确定为视力检测对象的视力级别，即转至步骤314，如图5(a)所示。另一种方式是利用第四检测图片和第五检测图片循环检测几次，以减少误判，提高视力检测的准确性，即转至步骤315-316，如图5(b)所示。
步骤314、若不匹配，则将第四检测图片所对应的级别确定为视力检测对象的视力级别。
步骤315、若不匹配，则利用第四检测图片和第五检测图片循环检测M次，确定第四检测图片和第五检测图片中被视力检测对象匹配次数最多的检测图片。
为了减少误判的概率，可以利用第四检测图片和第五检测图片循环检测M次，以确定出第四检测图片和第五检测图片中被视力检测对象匹配次数最多的检测图片。
步骤316、将匹配次数最多的检测图片所对应的级别确定为视力检测对象的视力级别。
下面，列举一个具体的实现方式。具体地，视力检测装置检测到用户未佩戴眼镜，且根据用户与显示屏幕之间的第一距离显示相应尺寸的检测图片。第一检测图片为普通用户的平均视力水平所对应的检测图片。本发明实施例以平均视力水平为0.6为例。
以P＝-1，检测图片中的图案为标准视力检测表中的“E”字，视力检测装置从左到右依次显示有效视标，用户也按照从左到右顺序进行指示为例，若当前显示的检测图片对应的视力级别为0.6，视力检测装置确定用户对视力级别为0.6的检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同，则显示视力级别为0.4的检测图片；若视力检测装置确定用户对视力级别为0.4的检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同，则显示视力级别为0.3的检测图片；若视力检测装置确定用户对视力级别为0.3的检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同，则显示视力级别为0.2的检测图片；若视力检测装置确定用户对视力级别为0.2检测图片中所有视标的指示方向与对应的视标表示的方位完全相同时，则显示视力级别为0.3的检测图片，若视力检测装置确定用户对视力级别为0.3的检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同，则利用视力级别为0.2的检测图片和视力级别为0.3的检测图片循环检测3次，用户对视力级别为0.2的检测图片均能够全部正确指示，而对视力级别为0.3的检测图片不能全部正确指示，因此，将用户的视力级别确定为0.2。
以P＝-2，检测图片中的图案为标准视力检测表中的“E”字，视力检测装置从左到右依次显示有效视标，用户也按照从左到右顺序进行指示为例，若当前显示的检测图片对应的视力级别为0.6，视力检测装 置确定用户对视力级别为0.6的检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同，则显示视力级别为0.3的检测图片；若视力检测装置确定用户对视力级别为0.3的检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同，则显示视力级别为0.15的检测图片；若视力检测装置确定用户对视力级别为0.15检测图片中所有视标的指示方向与对应的视标表示的方位完全相同时，则显示视力级别为0.2的检测图片；若视力检测装置确定用户对视力级别为0.2检测图片中所有视标的指示方向与对应的视标表示的方位相同时，则显示视力级别为0.3的检测图片；若视力检测装置确定用户对视力级别为0.3检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同时，则利用视力级别为0.2的检测图片和视力级别为0.3的检测图片循环检测3次，用户对视力级别为0.2的检测图片均能够全部正确指示，而对视力级别为0.3的检测图片不能全部正确指示，因此，将用户的视力级别确定为0.2。
以P为随机数，检测图片中的图案为标准视力检测表中的“E”字，视力检测装置从左到右依次显示有效视标，用户也按照从左到右顺序进行指示为例，若当前显示的检测图片对应的视力级别为0.6，视力检测装置确定用户对视力级别为0.6的检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同，则显示视力级别为0.4的检测图片；若视力检测装置确定用户对视力级别为0.4的检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同，则显示视力级别为0.2的检测图片；若视力检测装置确定用户对视力级别为0.2检测图片中所有视标的指示方向与对应的视标表示的方位完全相同时，则显示视力级别为0.3的检测图片；若视力检测装置确定用户对视力级别为0.3检测图片中所有视标的指示方向与对应的视标表示的方位不完全相同时，则利用视力级别为0.2的检测图片和视力级别为0.3的检测图片循环检测3次，用户对视力级别为0.2的检测图片均能够全部正确指示，而对视力级别为0.3的检测图片不能全部正确指示，因此，将用户的视力级别确定为0.2。
本发明的实施例提供的视力检测方法，通过在检测到视力检测对象未佩戴眼镜时，获取视力检测对象与显示屏幕之间的第一距离，且在显示屏幕上显示与第一距离相对应尺寸的检测图片，并按照预设规 则从检测图片的视标中确定出用于视力检测的有效视标，获取视力检测对象针对检测图片中的有效视标的指示信息，并根据至少一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息，确定视力检测对象的视力级别。与现有技术相比，本发明实施例的视力检测装置根据第一距离自动调节所要显示的检测图片的尺寸，同时，不需要额外增加专门的检测人员，还可以防止被检测对象凭记忆视力表视标的方向而作弊的问题。仅根据所显示的检测图片的有效视标的指示信息、以及视力检测对象对有效视标的指示信息，即可实现对视力检测对象视力级别的自动化检测，解决了现有视力检测方案操作复杂的问题。
实施例四
本发明实施例提供了一种视力检测装置，如图6所示，该视力检测装置60包括显示单元601、处理单元602、获取单元603；其中，
显示单元601，用于显示检测图片，检测图片包括至少一个视标；
处理单元602，用于按照预设规则从检测图片的视标中确定出用于视力检测的有效视标；
获取单元603，用于获取视力检测对象针对检测图片的有效视标的指示信息；
处理单元602，还用于根据至少一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息，确定视力检测对象的视力级别。
进一步的，如图7所示，该装置60还包括：
测距单元604，用于在显示单元601在显示检测图片之前，获取视力检测对象与显示单元之间的第一距离；
图片调整单元605，用于根据预设的标准比例关系和第一距离，将检测图片调整为具有与所述第一距离相对应尺寸的检测图片；
显示单元601，进一步用于显示与第一距离相对应尺寸的检测图片；其中，预设的标准比例关系包括：视力检测对象与视力检测装置之间的标准距离、以及标准距离相对应的标准检测图片尺寸。
进一步地，如图8所示，该装置60还包括：
识别单元606，用于在测距单元604获取视力检测对象与显示单元之间的第一距离之前，检测视力检测对象是否佩戴眼镜；
处理单元602，进一步用于若识别单元606检测到视力检测对象佩戴眼镜，则控制视力检测装置停止工作。
本发明的实施例提供的视力检测装置，通过在显示单元上显示检测图片，并按照预设规则从检测图片的视标中确定出用于视力检测的有效视标，获取视力检测对象针对检测图片中的有效视标的指示信息，并根据至少一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息，确定视力检测对象的视力级别。与现有技术相比，本发明实施例的视力检测装置不需要额外增加专门的检测人员，仅根据所显示的检测图片的有效视标的指示信息、以及视力检测对象对有效视标的指示信息，即可实现对视力检测对象视力级别的自动化检测，解决了现有视力检测方案操作复杂的问题。
本发明实施例还提供了一种视力检测系统，如图9所示，视力检测系统100包括：图6-图8中任一所图示的视力检测装置60、以及指示单元90。其中，该指示单元90用于将视力检测对象针对至少一个检测图片的有效视标的指示信息发送给视力检测装置。该指示单元90可以与视力检测装置60通过无线或者有线连接，示例地，指示单元90可以为遥控器、手柄、触摸屏等。对于视力检测装置60的功能描述，可以参考上述实施例中所撰写的内容，在此不再赘述。
本发明的实施例提供的视力检测系统，通过在显示屏幕上显示检测图片，并按照预设规则从检测图片的视标中确定出用于视力检测的有效视标，获取控制单元发送的视力检测对象针对检测图片中的有效视标的指示信息，并根据至少一个检测图片的有效视标所表示的方位、以及视力检测对象针对至少一个检测图片的有效视标的指示信息，确定视力检测对象的视力级别。与现有技术相比，本发明实施例的视力检测装置不需要额外增加专门的检测人员，仅根据所显示的检测图片的有效视标的指示信息、以及视力检测对象对有效视标的指示信息，即可实现对视力检测对象视力级别的自动化检测，解决了现有视力检测方案操作复杂的问题。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实 施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。权利要求中的措词‘包括’并不排除在权利要求未列出的元件或步骤的存在。元件前面的措词‘一’或‘一个’并不排除多个这样的元件的存在。在相互不同从属权利要求中记载某些措施的简单事实不表明这些措施的组合不能被有利使用。

Claims (17)

  1. 一种视力检测方法，所述方法包括以下步骤：
    在显示屏幕上显示检测图片，所述检测图片包括至少一个视标，并按照预设规则从所述检测图片的视标中确定出用于视力检测的有效视标；
    获取视力检测对象针对所述检测图片的有效视标的指示信息；
    根据至少一个检测图片的有效视标所表示的方位、以及所述视力检测对象针对所述至少一个检测图片的有效视标的指示信息，确定所述视力检测对象的视力级别。
  2. 根据权利要求1所述的方法，其特征在于，在所述在显示屏幕上显示检测图片的步骤之前，所述方法还包括：
    获取所述视力检测对象与所述显示屏幕之间的第一距离；
    所述在所述显示屏幕上显示检测图片的步骤包括：根据预设的标准比例关系和所述第一距离，在所述显示屏幕上显示具有与所述第一距离相对应尺寸的检测图片；
    所述预设的标准比例关系包括：所述视力检测对象与所述显示屏幕之间的标准距离、以及对应于所述标准距离的标准检测图片尺寸。
  3. 根据权利要求1或2所述的方法，其特征在于，包括至少两个检测图片，所述至少两个检测图片中每个检测图片所对应的视力级别不同。
  4. 根据权利要求3所述的方法，其特征在于，所述根据至少一个检测图片的有效视标所表示的方位、以及所述视力检测对象针对所述至少一个检测图片的有效视标的指示信息，确定所述视力检测对象的视力级别的步骤包括：
    确定所述视力检测对象对所述至少两个检测图片中的第一检测图片中的有效视标的指示信息是否与所述第一检测图片中的有效视标所表示的方位相匹配；
    若所述视力检测对象对所述第一检测图片中的有效视标的指示信息与所述第一检测图片中有效视标所表示的方位相匹配，则确定所述视力检测对象对所述至少两个检测图片中的第二检测图片中有效视标的指示信息是否与所述第二检测图片中有效视标所表示的方位相匹 配；所述第二检测图片为视力级别与所述第一检测图片的视力级别相隔N个级别的检测图片，且所述第二检测图片的视力级别高于所述第一检测图片的视力级别，所述N为正整数；
    若所述视力检测对象对所述第二检测图片中的有效视标的指示信息与所述第二检测图片中有效视标所表示的方位不匹配，则确定所述视力检测对象对所述至少两个检测图片中的第三检测图片中的有效视标的指示信息是否与所述第三检测图片中的有效视标所表示的方位相匹配，所述第三检测图片为视力级别与所述第二检测图片的视力级别相邻的检测图片，且所述第三检测图片的视力级别低于所述第二检测图片的视力级别；
    若所述视力检测对象对第三检测图片中有效视标的指示信息与所述第三检测图片中有效视标所表示的方位相匹配，则将所述第三检测图片所对应的视力级别确定为所述视力检测对象的视力级别。
  5. 根据权利要求4所述的方法，其特征在于，所述方法还包括，若所述视力检测对象对所述至少两个检测图片中的第三检测图片中的有效视标的指示信息与所述第三检测图片中的有效视标所表示的方位相匹配，则：
    利用所述第二检测图片和所述第三检测图片循环执行M次检测，确定出所述第二检测图片和所述第三检测图片中被所述视力检测对象匹配次数最多的检测图片，M为自然数；
    将被所述视力检测对象匹配次数最多的检测图片所对应的级别确定为所述视力检测对象的视力级别。
  6. 根据权利要求4或5所述的方法，其特征在于，所述方法还包括，若所述视力检测对象对所述第一检测图片中的有效视标的指示信息与所述第一检测图片中有效视标所表示的方位不匹配，则：
    确定所述视力检测对象对所述至少两个检测图片中的第四检测图片中有效视标的指示信息是否与所述第四检测图片中的有效视标所表示的方位相匹配；所述第四检测图片为视力级别与所述第一检测图片的视力级别相隔P个级别的检测图片，且所述第四检测图片的视力级别低于所述第一检测图片的视力级别，所述P为负整数；
    若所述视力检测对象对所述第四检测图片中的有效视标的指示信息与所述第四检测图片中有效视标所表示的方位相匹配，则确定所述 视力检测对象对所述至少两个检测图片中的第五检测图片中的有效视标的指示信息是否与所述第五检测图片中有效视标所表示的方位相匹配，所述第五检测图片为视力级别与所述第四检测图片的视力级别相邻的检测图片，且所述第五检测图片的视力级别高于所述第四检测图片的视力级别；
    若所述视力检测对象对第五检测图片中的有效视标的指示信息与所述第一检测图片中有效视标所表示的方位不匹配，则将所述第四检测图片所对应的视力级别确定为所述视力检测对象的视力级别。
  7. 根据权利要求6所述的方法，其特征在于，所述方法还包括，若所述视力检测对象对第五检测图片中有效视标的指示信息与所述第五检测图片中有效视标所表示的方位不匹配，则：
    利用所述第四检测图片和所述第五检测图片循环执行M次检测，确定所述第四检测图片和所述第五检测图片中被所述视力检测对象匹配次数最多的检测图片；
    将被所述视力检测对象匹配次数最多的检测图片所对应的视力级别确定为所述视力检测对象的视力级别。
  8. 根据权利要求5或7所述的方法，其特征在于，M＝2或3。
  9. 根据权利要求2所述的方法，其特征在于，所述方法还包括，在所述获取所述视力检测对象与所述显示屏幕之间的第一距离的步骤之前：
    检测所述视力检测对象是否佩戴眼镜；
    若检测到所述视力检测对象佩戴眼镜，则终止检测过程。
  10. 根据权利要求1-9中任一项所述的方法，其特征在于，若所述有效视标为多个时，将所述有效视标按照预设顺序单个显示在所述显示屏幕上。
  11. 根据权利要求10所述的方法，其特征在于，所述预设顺序是自由可调的。
  12. 根据权利要求1-9中任一项所述的方法，其特征在于，若所述有效视标为多个时，将所述有效视标同时显示在所述显示屏幕上，并且在显示屏幕上显示检测顺序标识；
    所述指示信息中包括所述视力检测对象按照所述检测顺序标识指示的方向对所述检测图片中的有效视标进行依次指示的信息。
  13. 根据权利要求1-9中任一项所述的方法，其特征在于，当确定出所述有效视标时，使所述有效视标处于高亮状态，而其他非有效视标处于非高亮状态；或者，当确定出所述有效视标时，使所述有效视标和其他视标同处于高亮状态，但使用圆形、正方形、矩形等规则图形或者不规则的图形将所述有效视标进行突出显示，以区别于其他非有效视标。
  14. 一种视力检测装置，所述装置包括：
    显示单元，用于显示检测图片，所述检测图片包括至少一个视标；
    处理单元，用于按照预设规则从所述检测图片的视标中确定出用于视力检测的有效视标；
    获取单元，用于获取视力检测对象针对所述检测图片的有效视标的指示信息；
    所述处理单元，还用于根据至少一个检测图片的有效视标所表示的方位、以及所述视力检测对象针对所述至少一个检测图片的有效视标的指示信息，确定所述视力检测对象的视力级别。
  15. 根据权利要求14所述的装置，其特征在于，所述装置还包括：
    测距单元，用于在所述显示单元显示检测图片之前，获取所述视力检测对象与所述视力检测装置之间的第一距离；以及
    图片调整单元，用于根据预设的标准比例关系和所述第一距离，将所述检测图片调整为具有与所述第一距离相对应的尺寸的检测图片；
    其中，所述显示单元进一步用于显示具有与所述第一距离相对应的尺寸的检测图片；所述预设的标准比例关系包括：所述视力检测对象与所述视力检测装置之间的标准距离与所述标准距离相对应的检测图片尺寸。
  16. 根据权利要求15所述的装置，其特征在于，所述装置还包括：
    识别单元，用于在所述测距单元获取所述视力检测对象与所述视力检测装置之间的第一距离之前，检测所述视力检测对象是否佩戴眼镜；
    其中，所述处理单元进一步用于若所述识别单元检测到所述视力检测对象佩戴眼镜，则控制所述视力检测装置停止工作。
  17. 一种视力检测系统，包括根据权利要求14-16中任一项所述的 视力检测装置、以及用于将所述视力检测对象针对所述至少一个检测图片的有效视标的指示信息发送给所述视力检测装置的指示单元。
PCT/CN2015/089520 2015-04-17 2015-09-14 一种视力检测方法、装置和系统 WO2016165272A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/913,283 US10143368B2 (en) 2015-04-17 2015-09-14 Visual acuity test method, apparatus and system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510185244.6 2015-04-17
CN201510185244.6A CN104739363B (zh) 2015-04-17 2015-04-17 一种视力检测方法、装置和系统

Publications (1)

Publication Number Publication Date
WO2016165272A1 true WO2016165272A1 (zh) 2016-10-20

Family

ID=53580037

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/089520 WO2016165272A1 (zh) 2015-04-17 2015-09-14 一种视力检测方法、装置和系统

Country Status (3)

Country Link
US (1) US10143368B2 (zh)
CN (1) CN104739363B (zh)
WO (1) WO2016165272A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104739363B (zh) * 2015-04-17 2017-02-01 京东方科技集团股份有限公司 一种视力检测方法、装置和系统
CN106175658A (zh) * 2016-07-05 2016-12-07 苏州宣嘉光电科技有限公司 一种视力动态智能监测系统
TW201902412A (zh) * 2017-06-06 2019-01-16 沈荷芳 虛擬實境眼部檢測系統及其眼部檢測方法
US10413172B2 (en) 2017-12-11 2019-09-17 1-800 Contacts, Inc. Digital visual acuity eye examination for remote physician assessment
CN107951464B (zh) * 2017-12-17 2021-05-28 苏州润创软件技术有限公司 一种视力检测系统和方法
CN108652579A (zh) * 2018-04-25 2018-10-16 珠海格力电器股份有限公司 一种检测视力的方法和终端
CN109157186A (zh) * 2018-10-25 2019-01-08 武汉目明乐视健康科技有限公司 无人化自助视力监测仪
CN109938690A (zh) * 2019-03-20 2019-06-28 深圳云合科技有限公司 基于答题器的视力检测方法、视力检测系统和存储介质
CN113807375B (zh) * 2020-06-12 2024-05-31 海信视像科技股份有限公司 一种显示设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5877841A (en) * 1995-12-05 1999-03-02 Lg Electronics, Inc. Application and method for self eye examination using a video appliance
JP2005296382A (ja) * 2004-04-13 2005-10-27 Honda Motor Co Ltd 視線検出装置
CN102631186A (zh) * 2012-04-22 2012-08-15 上海瞩远实业有限公司 电子视力检测装置及其方法
CN102984344A (zh) * 2012-10-16 2013-03-20 广东欧珀移动通信有限公司 一种利用手机测试视力的方法及手机
CN104116491A (zh) * 2013-04-28 2014-10-29 谢骅 视力检测装置及其方法
CN104739363A (zh) * 2015-04-17 2015-07-01 京东方科技集团股份有限公司 一种视力检测方法、装置和系统

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592247A (en) * 1994-05-04 1997-01-07 Trokel; Stephen L. Apparatus and method to measure visual function under simulated nighttime conditions
US7390091B2 (en) * 2005-04-29 2008-06-24 Sperian Protection Optical, Inc. Vision testing apparatus
CN201005675Y (zh) * 2007-01-15 2008-01-16 涂聪 视力检测装置
JP5085957B2 (ja) * 2007-02-26 2012-11-28 株式会社ニデック 視標呈示装置
US7771051B2 (en) * 2007-06-13 2010-08-10 Rahim Hirji Near eye opthalmic device
ES2327307B1 (es) * 2007-07-04 2010-07-21 Universidad De Murcia Procedimiento automatizado para medir la agudeza visual de lectura.
MX2011011865A (es) * 2009-05-09 2012-02-29 Vital Art And Science Inc Sistema de evaluacion y rastreo de discriminacion visual de forma.
US9326675B2 (en) * 2009-12-24 2016-05-03 Microsoft Technology Licensing, Llc Virtual vision correction for video display
US20120057007A1 (en) * 2010-09-03 2012-03-08 Satoshi Ishiguro Simplified Visual Screening Check on Television
CN102068234A (zh) * 2011-02-24 2011-05-25 江苏省莱科信息技术有限公司 视力测试装置
CN102599879A (zh) 2012-02-23 2012-07-25 天津理工大学 自适应视力检测智能系统及视力检测方法
CN203059655U (zh) * 2013-01-31 2013-07-17 浙江工贸职业技术学院 智能视力检测装置
CN203576469U (zh) * 2013-10-12 2014-05-07 合肥华科电子技术研究所 一种自助式智能视力检测仪
US9066667B1 (en) * 2014-11-06 2015-06-30 Bertec Corporation System and method for testing dynamic visual acuity and/or gaze stabilization

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5877841A (en) * 1995-12-05 1999-03-02 Lg Electronics, Inc. Application and method for self eye examination using a video appliance
JP2005296382A (ja) * 2004-04-13 2005-10-27 Honda Motor Co Ltd 視線検出装置
CN102631186A (zh) * 2012-04-22 2012-08-15 上海瞩远实业有限公司 电子视力检测装置及其方法
CN102984344A (zh) * 2012-10-16 2013-03-20 广东欧珀移动通信有限公司 一种利用手机测试视力的方法及手机
CN104116491A (zh) * 2013-04-28 2014-10-29 谢骅 视力检测装置及其方法
CN104739363A (zh) * 2015-04-17 2015-07-01 京东方科技集团股份有限公司 一种视力检测方法、装置和系统

Also Published As

Publication number Publication date
US20170055826A1 (en) 2017-03-02
US10143368B2 (en) 2018-12-04
CN104739363B (zh) 2017-02-01
CN104739363A (zh) 2015-07-01

Similar Documents

Publication Publication Date Title
WO2016165272A1 (zh) 一种视力检测方法、装置和系统
CN107847122B (zh) 视野计测方法、视野计测装置和视力检查视标
JP2019069180A (ja) 主観的距離計測に基づく眼の屈折異常の測定のためのシステムおよび方法
EP3153092B1 (en) Pupil detection system, gaze detection system, pupil detection method, and pupil detection program
WO2016098406A1 (ja) 情報処理装置、情報処理方法及びプログラム
JP2014533587A5 (zh)
TWI543744B (zh) 適應性視覺效能測試系統
KR101455200B1 (ko) 학습 모니터링 장치 및 학습 모니터링 방법
CN105996975A (zh) 用于检测视力的方法、设备以及终端
US8882269B2 (en) Strabismus detection
US10105047B2 (en) Automatic unattended-monitoring visual acuity inspection device
JP2017518835A (ja) 視力を決定するための方法
KR101451669B1 (ko) 자동 시력 검사기 및 자동 시력 검사 방법
US20210153794A1 (en) Evaluation apparatus, evaluation method, and evaluation program
JP6451434B2 (ja) 監視システム
TWI635844B (zh) Vision detecting device and vision detecting method capable of automatically adjusting visual target size
US10624536B2 (en) Virtual reality-based ophthalmic inspection system and inspection method thereof
US20220079484A1 (en) Evaluation device, evaluation method, and medium
US11937928B2 (en) Evaluation apparatus, evaluation method, and evaluation program
US20130321608A1 (en) Eye direction detecting apparatus and eye direction detecting method
JP2019164216A (ja) 指示位置伝達システムおよび指示位置伝達方法
CN113143192A (zh) 3d裸眼技术可视化的视力检测校正方法
JP6606264B1 (ja) 視野検査装置
KR102118505B1 (ko) 사용자 시선 움직임을 이용한 시력 측정 방법 및 시스템
JP5852187B2 (ja) 視野計

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14913283

Country of ref document: US

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

Ref document number: 15888972

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15888972

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 03.05.2018)

122 Ep: pct application non-entry in european phase

Ref document number: 15888972

Country of ref document: EP

Kind code of ref document: A1