CN115442525A - Pupil distance measuring method, system, terminal and storage medium - Google Patents
Pupil distance measuring method, system, terminal and storage medium Download PDFInfo
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- CN115442525A CN115442525A CN202211051538.6A CN202211051538A CN115442525A CN 115442525 A CN115442525 A CN 115442525A CN 202211051538 A CN202211051538 A CN 202211051538A CN 115442525 A CN115442525 A CN 115442525A
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- 210000001747 pupil Anatomy 0.000 title claims abstract description 179
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 25
- 230000008859 change Effects 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
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- 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
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/11—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring interpupillary distance or diameter of pupils
- A61B3/111—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring interpupillary distance or diameter of pupils for measuring interpupillary distance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/52—Details of telephonic subscriber devices including functional features of a camera
Abstract
The application provides a pupil distance measuring method and a system, wherein the method comprises the following steps: the terminal camera carries out focusing shooting on the first pupil to obtain a first pupil distance A; rotating the terminal by taking the terminal center as a center until the terminal camera faces the second pupil; the terminal camera carries out focusing shooting on the second pupil to obtain a second pupil distance B; acquiring a terminal rotation angle alpha recorded by terminal gyroscope information; the terminal calculates the distance C between the first pupil and the second pupil according to the first pupil distance A, the second pupil distance B and the terminal rotation angle alpha, the terminal provided by the invention can be an intelligent terminal capable of being networked, a user can conveniently and quickly acquire the pupil distance at any time and any place by using the technology of the technical scheme of the invention, professional knowledge is not required, a measuring tool is not required, and the method is not assisted by others, has simple processing steps, has low requirements on the terminal, and can be realized without a highly-configured terminal.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a method, a system, a terminal and a storage medium for measuring pupil distance.
Background
Along with the development of internet technology, more and more users are used for carrying out optometry lens matching through a network, but at present, the pupil distance needs to be measured by professional optometry units, optometry personnel trained by professionals are used for measuring, and the measuring process is quite inconvenient.
At present, some technologies for measuring the pupil distance or performing optometry by using a smart phone exist, but the existing technologies are complex in steps and complex in calculation, have high requirements on the intelligent terminal, and bring inconvenience to the operation of the intelligent terminal.
Disclosure of Invention
The invention aims to provide a pupil distance measuring method and a pupil distance measuring system which are simple to operate and simple and convenient in steps.
In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:
in a first aspect, an embodiment of the present application provides a pupil distance measurement method, including:
the terminal camera carries out focusing shooting on the first pupil to obtain a first pupil distance A;
rotating the terminal by taking the center of the terminal as a center until the terminal camera faces the second pupil;
the terminal camera carries out focusing shooting on the second pupil to obtain a second pupil distance B;
acquiring a terminal rotation angle alpha recorded by terminal gyroscope information;
the terminal calculates the distance C between the first pupil and the second pupil according to the first pupil distance A, the second pupil distance B and the terminal rotation angle alpha;
in an implementation manner, the "taking a focus picture of the first pupil by the terminal camera, and obtaining the first pupil distance a" includes:
the terminal camera automatically focuses and shoots the first pupil;
acquiring a focal length F of automatic focusing shooting, a focal length change quantity S of automatic focusing and an image distance V;
the terminal calculates the first pupil distance A according to the focal length F shot by automatic focusing, the focal length change quantity S of automatic focusing and the image distance V;
further, the step of shooting the second pupil by the terminal camera in a focusing manner to obtain a second pupil distance B includes:
the terminal camera automatically focuses and shoots the second pupil;
acquiring a focal length F ' of automatic focusing shooting, a focal length change quantity S ' of automatic focusing and an image distance V ';
the terminal calculates the first pupil distance B according to the focal length F ' shot by automatic focusing, the focal length change quantity S ' shot by automatic focusing and the image distance V ';
in another calculation manner, if the first pupil distance a is equal to the first pupil distance B;
measuring the distance D from the face of the user to the terminal camera by using a distance measuring device;
positioning the center position of each pupil according to the image shot by the terminal camera, and marking the coordinates of the center position, wherein the first pupil coordinate (x 1, y 1) and the second pupil coordinate (x 2, y 2);
calculating the distance C between the first pupil and the second pupil according to the first pupil coordinate (x 1, y 1), the second pupil coordinate (x 2, y 2) and the D;
in a second aspect, an embodiment of the present application provides a pupil distance measuring system, including:
the camera is used for carrying out focusing shooting on the first pupil and the second pupil;
the acquisition module is used for acquiring a terminal rotation angle alpha recorded by the terminal gyroscope information;
the processing module is used for calculating a distance C between the first pupil and the second pupil according to the first pupil distance A, the second pupil distance B and the terminal rotation angle alpha;
further, the acquiring module is further configured to acquire a focal length F of the auto-focus shooting, a focal length change amount S of the auto-focus shooting, and an image distance V when the first pupil is shot; the processing module is further configured to calculate the first pupil distance a according to the focal length F of the autofocus shooting, the focal length change amount S of the autofocus and the image distance V;
further, the acquiring module is further configured to acquire a focal length F ' of the auto-focus shooting, a focal length change amount S ' of the auto-focus shooting, and an image distance V ' when the second pupil is shot; the processing module is further configured to calculate the first pupil distance B according to the focal length F ' obtained by the auto-focus shooting, the focal length change amount S ' obtained by the auto-focus shooting, and the image distance V ';
the system also comprises a distance measuring device and a positioning module;
if the first pupil distance a is equal to the first pupil distance B,
the distance measuring device is used for measuring the distance D from the face of the user to the terminal camera;
the positioning module is used for positioning the center position of each pupil according to the image shot by the terminal camera and marking the coordinates of the pupil, wherein the first pupil coordinate (x 1, y 1) and the second pupil coordinate (x 2, y 2) are included;
the processing module is further used for calculating the distance C between the first pupil and the second pupil according to the first pupil coordinate (x 1, y 1), the second pupil coordinate (x 2, y 2) and the distance D;
in a third aspect, an embodiment of the present application provides an interpupillary distance measuring terminal, including a processor, a memory, and at least one camera, where the memory stores machine-readable instructions executable by all the processors, and when the terminal is in operation, the processor communicates with the memory and the camera through a bus, and the processor executes the machine-readable instructions to perform the steps of the interpupillary distance measuring method described above.
In a fourth aspect, the present application provides a readable storage medium, which is characterized by storing instructions, when the instruction is executed when the pupil distance measurement terminal is running, the method for measuring the pupil distance as described above is implemented.
The terminal provided by the invention is an intelligent terminal which can be networked, a user can conveniently and quickly acquire the interpupillary distance by using the technology of the technical scheme of the invention at any time and any place, professional knowledge, a measuring tool and assistance of others are not required, the processing steps of the invention are simple, the requirement on the terminal is low, and the method can be realized without a highly-configured terminal.
Drawings
Fig. 1 is a schematic diagram illustrating a principle of measuring an interpupillary distance of an interpupillary distance measuring terminal according to the present invention;
FIG. 2 is a flow chart of a method for measuring interpupillary distance according to the present invention;
FIG. 3 is a schematic diagram of a pupil distance measuring system of the present invention;
FIG. 4 is another schematic diagram of the principle of measuring the interpupillary distance of the interpupillary distance measuring terminal of the present invention
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention are described below clearly and completely in conjunction with the detailed description and the accompanying drawings, and it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, the terms "first", "second", "third", etc. are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a principle of measuring a pupil distance of a pupil distance measuring terminal according to an embodiment of the present invention.
The distance measuring terminal can be terminal equipment with a self-focusing camera, and can be intelligent terminal products such as mobile phones, ipads, computers and the like. The terminal can carry out automatic focusing shooting on the first pupil and the second pupil to obtain a first pupil distance A and a second pupil distance B, in addition, a gyroscope carried by the terminal can acquire a corner angle alpha when the first pupil is shot and the second pupil is shot, and the pupil distance is calculated through the terminal processing unit.
Further, an embodiment of the present application provides a method for measuring interpupillary distance, including the following steps:
s1: the terminal camera carries out focusing shooting on the first pupil to obtain a first pupil distance A;
specifically, the terminal camera performs automatic focusing shooting on the first pupil; the terminal acquires a focal length F of automatic focusing shooting, a focal length change quantity S of automatic focusing and an image distance V; sending the focal length F shot by automatic focusing, the focal length variation S of automatic focusing and the image distance V to a processing unit for processing and calculation, and then calculating the first pupil distance A by the terminal according to the focal length F shot by automatic focusing, the focal length variation S of automatic focusing and the image distance V;
the calculation formula is as follows:
s2: rotating the terminal by taking the center of the terminal as a center until the terminal camera faces the second pupil;
s3: the terminal camera carries out focusing shooting on the second pupil to obtain a second pupil distance B;
specifically, the terminal camera performs automatic focusing shooting on the second pupil; acquiring a focal length F ' of automatic focusing shooting, a focal length change quantity S ' of automatic focusing and an image distance V '; the terminal calculates the first pupil distance B according to the focal length F ' shot by automatic focusing, the focal length change quantity S ' shot by automatic focusing and the image distance V ';
calculating the formula:
s4: acquiring a terminal rotation angle alpha recorded by terminal gyroscope information;
when the terminal rotates, the gyroscope records the condition that the terminal is in the initial state to the middle-most state in real time, and after the terminal stops rotating, the gyroscope sends the rotation angle alpha of the terminal to the processing unit.
S5: the terminal calculates the distance C between the first pupil and the second pupil according to the first pupil distance A, the second pupil distance B and the terminal rotation angle alpha;
calculating the formula:
further, as shown in FIG. 4
If the first pupil distance A is equal to the first pupil distance B;
the measurement of the interpupillary distance can also be performed according to the following steps:
measuring the distance D from the face of the user to the terminal camera by using a distance measuring device;
positioning the center position of each pupil according to the image shot by the terminal camera, and marking the coordinates of the pupil, wherein the first pupil coordinate (x 1, y 1) and the second pupil coordinate (x 2, y 2) are obtained;
calculating the distance C between the first pupil and the second pupil according to the first pupil coordinate (x 1, y 1), the second pupil coordinate (x 2, y 2) and the D;
the calculation formula is as follows:
the terminal provided by the invention is an intelligent terminal which can be networked, a user can conveniently and quickly acquire the interpupillary distance by using the technology of the technical scheme of the invention at any time and any place, professional knowledge, a measuring tool and assistance of others are not required, the processing steps of the invention are simple, the requirement on the terminal is low, and the method can be realized without a highly-configured terminal.
Based on the same inventive concept, an embodiment of the present invention further provides a pupil distance measuring system, as shown in fig. 3, including:
the camera is used for focusing and shooting the first pupil and the second pupil;
the acquisition module is used for acquiring a terminal rotation angle alpha recorded by the terminal gyroscope information;
the processing module is used for calculating a distance C between the first pupil and the second pupil according to the first pupil distance A, the second pupil distance B and the terminal rotation angle alpha;
further, the acquiring module is further configured to acquire a focal length F of the auto-focus shooting, a focal length change amount S of the auto-focus shooting, and an image distance V when the first pupil is shot; the processing module is further configured to calculate the first pupil distance a according to the focal length F of the auto-focus shooting, the focal length change amount S of the auto-focus, and the image distance V;
further, the acquiring module is further configured to acquire a focal length F ' for auto-focus shooting, a focal length change amount S ' for auto-focus shooting, and an image distance V ' when shooting the second pupil; the processing module is further configured to calculate the first pupil distance B according to the focal length F ' obtained by the auto-focus shooting, the focal length change amount S ' obtained by the auto-focus shooting, and the image distance V ';
in a further aspect of the present invention,
the system also comprises a distance measuring device and a positioning module;
if the first pupil distance a is equal to the first pupil distance B,
the distance measuring device is used for measuring the distance D from the face of the user to the terminal camera;
the positioning module is used for positioning the center position of each pupil according to the image shot by the terminal camera and marking the coordinates of the pupil, wherein the first pupil coordinate (x 1, y 1) and the second pupil coordinate (x 2, y 2);
the processing module is further used for calculating a distance C between the first pupil and the second pupil according to the first pupil coordinate (x 1, y 1), the second pupil coordinate (x 2, y 2) and the distance D;
the calculation formula is as follows:
the system is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
The above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. As another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
The embodiment of the application provides a pupil distance measuring terminal, which comprises a processor, a memory and at least one camera, wherein the memory stores machine readable instructions executable by all processors, when the terminal runs, the processor communicates with the memory and the camera through a bus, and the processor executes the machine readable instructions to execute the steps of the pupil distance measuring method.
Specifically, the processor may be one or more central processing units (CPU for short), and in the case of one CPU, the CPU may be a single-core CPU or a multi-core CPU; wherein the processor is used to call data and programs stored in the memory. When the terminal runs, the processor communicates with the memory and the camera through the bus, and the processor executes the machine readable instruction to execute the steps of the pupil distance measuring method.
In a fourth aspect, an embodiment of the present application provides a readable storage medium, which is characterized in that the readable storage medium stores instructions, and when the readable storage medium is executed, the instructions implement the steps of the pupil distance measurement method as described above.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (in english: processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A method of measuring interpupillary distance, comprising:
the terminal camera carries out focusing shooting on the first pupil to obtain a first pupil distance A;
rotating the terminal by taking the terminal center as a center until the terminal camera faces the second pupil;
the terminal camera carries out focusing shooting on the second pupil to obtain a second pupil distance B;
acquiring a terminal rotation angle alpha recorded by terminal gyroscope information;
the terminal calculates the distance C between the first pupil and the second pupil according to the first pupil distance A, the second pupil distance B and the terminal rotation angle alpha;
2. the pupil distance measuring method according to claim 1, wherein the taking a focus shot of the first pupil by the terminal camera to obtain the first pupil distance a comprises:
the terminal camera automatically focuses and shoots the first pupil;
acquiring a focal length F of automatic focusing shooting, a focal length change quantity S of automatic focusing and an image distance V;
the terminal calculates the first pupil distance A according to the focal length F shot by automatic focusing, the focal length change quantity S of automatic focusing and the image distance V;
3. the pupil distance measuring method according to claim 2, wherein the step of shooting the second pupil in focus by the terminal camera to obtain the second pupil distance B comprises:
the terminal camera automatically focuses and shoots the second pupil;
acquiring a focal length F ' of automatic focusing shooting, a focal length change S ' of automatic focusing and an image distance V ';
the terminal calculates the first pupil distance B according to the focal length F ' shot by automatic focusing, the focal length change quantity S ' shot by automatic focusing and the image distance V ';
4. the method of claim 3, wherein if the first pupil distance A is equal to the first pupil distance B;
measuring the distance D from the face of the user to the terminal camera by using a distance measuring device;
positioning the center position of each pupil according to the image shot by the terminal camera, and marking the coordinates of the pupil, wherein the first pupil coordinate (x 1, y 1) and the second pupil coordinate (x 2, y 2) are obtained;
calculating the distance C between the first pupil and the second pupil according to the first pupil coordinate (x 1, y 1), the second pupil coordinate (x 2, y 2) and the D;
5. a interpupillary distance measurement system, comprising:
the camera is used for focusing and shooting the first pupil and the second pupil;
the acquisition module is used for acquiring a terminal rotation angle alpha recorded by the terminal gyroscope information;
the processing module is used for calculating a distance C between the first pupil and the second pupil according to the first pupil distance A, the second pupil distance B and the terminal rotation angle alpha;
6. the interpupillary distance measurement system of claim 5, wherein,
the acquisition module is further used for acquiring a focal length F of automatic focusing shooting, a focal length change quantity S of automatic focusing and an image distance V when the first pupil is shot;
the processing module is further configured to calculate the first pupil distance a according to the focal length F of the autofocus shooting, the focal length change amount S of the autofocus and the image distance V;
7. the interpupillary distance measuring system of claim 6,
the acquisition module is further used for acquiring a focal length F ' of automatic focusing shooting, a focal length change quantity S ' of automatic focusing and an image distance V ' when shooting the second pupil;
the processing module is further configured to calculate the first pupil distance B according to the focal length F ' obtained by the auto-focus shooting, the focal length change amount S ' obtained by the auto-focus shooting, and the image distance V ';
8. the interpupillary distance measurement system of claim 7, wherein,
the system also comprises a distance measuring device and a positioning module;
if the first pupil distance A is equal to the first pupil distance B, the distance measuring device is used for measuring the distance D from the face of the user to the terminal camera;
the positioning module is used for positioning the center position of each pupil according to the image shot by the terminal camera and marking the coordinates of the pupil, wherein the first pupil coordinate (x 1, y 1) and the second pupil coordinate (x 2, y 2) are included;
the processing module is further used for calculating the distance C between the first pupil and the second pupil according to the first pupil coordinate (x 1, y 1), the second pupil coordinate (x 2, y 2) and the distance D;
9. a pupil distance measuring terminal comprising a processor, a memory, at least one camera, said memory storing machine readable instructions executable by all the processor, said processor communicating with said memory and said camera via a bus when the terminal is operating, said processor executing said machine readable instructions to perform the steps of a pupil distance measuring method according to any one of claims 1 to 4.
10. A readable storage medium storing instructions which, when executed when the pupil distance measuring terminal is operated, implement the steps of a pupil distance measuring method according to any one of claims 1 to 4.
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| WO2018023961A1 (en) * | 2016-08-01 | 2018-02-08 | 珠海格力电器股份有限公司 | Distance information processing method and device |
| CN107847128A (en) * | 2015-05-11 | 2018-03-27 | 6超越6视觉有限公司 | Determine the devices, systems, and methods of interpupillary distance |
| CN108917703A (en) * | 2018-03-30 | 2018-11-30 | 京东方科技集团股份有限公司 | Distance measurement method and device, smart machine |
| CN109674443A (en) * | 2017-10-19 | 2019-04-26 | 华为终端（东莞）有限公司 | A kind of interpupillary distance measurement method and terminal |
| CN114689013A (en) * | 2022-02-17 | 2022-07-01 | 歌尔科技有限公司 | Ranging method, ranging device, ranging equipment and storage medium |
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2022
- 2022-08-31 CN CN202211051538.6A patent/CN115442525A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107847128A (en) * | 2015-05-11 | 2018-03-27 | 6超越6视觉有限公司 | Determine the devices, systems, and methods of interpupillary distance |
| WO2018023961A1 (en) * | 2016-08-01 | 2018-02-08 | 珠海格力电器股份有限公司 | Distance information processing method and device |
| CN109674443A (en) * | 2017-10-19 | 2019-04-26 | 华为终端（东莞）有限公司 | A kind of interpupillary distance measurement method and terminal |
| CN108917703A (en) * | 2018-03-30 | 2018-11-30 | 京东方科技集团股份有限公司 | Distance measurement method and device, smart machine |
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