Display content interaction method and device of portable display equipment and storage medium

Abstract

The invention relates to the technical field of VR / AR, and discloses a display content interaction method and device of portable display equipment and a storage medium, and the method comprises the following steps: playing a preset first vision identifier; collecting first gesture data; calculating a first test value; comparing the first test value with the first vision identifier, and if the first test value is matched with a reference value corresponding to the first vision identifier, playing a preset next first vision identifier; if the first test value is not matched with a reference value corresponding to the first vision identifier, outputting a first vision value corresponding to the current vision identifier, calculating a gesture feature, and playing a preset second vision identifier corresponding to the gesture feature; acquiring second gesture data of the tested person, and calculating a second test value; and comparing the second test value with the second vision identifier, and if the second test value is matched with a reference value corresponding to the second vision identifier, playing a next preset second vision identifier.

Description

Technical Field

[0001] The present application relates to the field of VR / AR, and in particular to a display content interaction method, device and storage medium of a portable display device. Background Art

[0002] With the continuous development of display technology, flat display technology has gradually evolved into virtual reality technology and augmented reality technology, namely VR and AR. These two technologies bring unprecedented experience to users by creating immersive virtual environments or superimposing virtual information in the real world. The hardware of VR and AR is mostly portable display devices, VR is a head-mounted display helmet, and AR is more likely to use smart glasses solutions.

[0003] In the application field, VR is used for indoor game experience. For example, in medical education, students can use VR to simulate surgery, understand the structure of the human body, and improve practical operation skills. AR can be used for pedestrians' auxiliary navigation and real-world interaction. For example, students can use AR applications to observe the structure and movement of the earth and understand natural phenomena such as plate movement and earthquakes.

[0004] However, the current VR and AR content all plays pre-set display content in a preset scene, and the display content is difficult to adjust. Therefore, it is difficult to apply to vision detection scenarios in the field of ophthalmology in medicine, which requires adjusting the display content based on interactive information. Summary of the invention

[0005] In order to use virtual display technology in vision detection scenarios in the field of ophthalmology in medicine, the present application provides a display content interaction method, device and storage medium of a portable display device.

[0006] On the one hand, the present application provides a display content interaction method of a portable display device, which adopts the following technical solution:

[0007] A method for interactive display content of a portable display device comprises the following steps:

[0008] Play the preset first sight identifier;

[0009] Collecting first gesture data of the person being measured;

[0010] Calculating a first test value according to the first gesture data;

[0011] Comparing the first test value with the first vision identifier, if the first test value matches the reference value corresponding to the first vision identifier, playing the preset next first vision identifier; if the first test value does not match the reference value corresponding to the first vision identifier, outputting the first vision value corresponding to the current vision identifier, calculating the gesture feature according to the first gesture data, and playing the preset second vision identifier corresponding to the gesture feature;

[0012] Collecting second gesture data of the person being measured;

[0013] Calculating a second test value according to the second gesture data;

[0014] Compare the second test value with the second vision identifier. If the second test value matches the reference value corresponding to the second vision identifier, play the preset next second vision identifier; if the second test value does not match the reference value corresponding to the second vision identifier, output the second vision value corresponding to the current vision identifier.

[0015] By adopting the above technical solution, the gesture of the person being tested is used to determine whether the current vision identifier can be seen clearly. If the gesture matches the vision identifier, the next vision identifier is played. If they do not match, the corresponding first vision value is output. In the method of measuring vision, the function of interaction between gesture and display device is realized. In addition, the first vision identifier is preset, and the second vision identifier is a preset diagram corresponding to the characteristics of the gesture. Therefore, the second vision identifier may have different graphics according to different persons being tested. Therefore, it is conducive to more closely fitting the characteristics of the person being tested and realizing vision testing.

[0016] Optionally, the method further comprises the following steps:

[0017] Calculate an algorithmic difference between the first vision value and the second vision value;

[0018] A preset third vision identifier corresponding to the algorithm difference is played according to the algorithm difference.

[0019] By adopting the above technical solution, the algorithm difference is calculated according to the results of previous multiple measurements to match the selection of the third vision identifier, so that the decision can be more targeted at the vision characteristics of the person being tested, which is conducive to further improving the interactive performance and test accuracy.

[0020] Optionally, the method further comprises the following steps:

[0021] The number of corners in the pattern of the third vision identifier is adjusted in positive correlation with the algorithm difference.

[0022] By adopting the above technical solution, the more corners there are in the third vision identifier, the better vision is needed to see clearly. Therefore, the better the vision value (not the eye degree), the more corners there can be.

[0023] Optionally, the method further comprises the following steps:

[0024] Collecting the third hand gesture data of the person being measured;

[0025] Calculating a third test value according to the third gesture data;

[0026] Comparing the third test value with the third vision identifier, if the third test value matches the reference value corresponding to the third vision identifier, playing the preset next third vision identifier; if the third test value does not match the reference value corresponding to the third vision identifier, outputting the third vision value corresponding to the current vision identifier;

[0027] A comprehensive vision value is calculated according to the first vision value, the second vision value and the third vision value.

[0028] By adopting the above technical solution, the third vision value is measured according to the third gesture data, and multiple gesture features are used to participate in the interaction, thereby further improving the performance of the interaction and improving the accuracy of the vision test.

[0029] Optionally, the method further comprises the following steps:

[0030] Calculate the difference between the first vision value and the second vision value as a first difference;

[0031] If the first difference is greater than a preset reference difference, playing a preset variable vision identifier;

[0032] Collecting the fourth hand gesture data of the person being measured in real time;

[0033] Calculating a hand feature value according to the fourth gesture data;

[0034] adjusting the variable vision identifier according to the hand characteristic value;

[0035] Within a preset time period, if the change value of the variable vision identifier is less than a preset change reference value, the variable vision value corresponding to the current variable vision identifier is output.

[0036] By adopting the above technical solution, if the variable vision identifier measured twice by the hand feature value of the fourth gesture data has a large deviation, the identifier can be adjusted and changed, that is, the variable vision identifier; during the test, the hand feature value is calculated according to the gesture data, and the variable vision identifier is adjusted according to the feature value. During the real-time test, when the change value of the variable vision identifier becomes smaller, it means that the state at this time can be seen clearly. Generally, it is between clear and unclear, and the corresponding variable vision value output at this time is more accurate.

[0037] Optionally, the method further comprises the following steps:

[0038] The variable vision identifier has a variable vision feature, and the attribute of the vision feature in the variable vision identifier is adjusted according to the hand feature value.

[0039] By adopting the above technical solution, the attributes of the vision characteristics in the variable vision identifier are adjusted according to the hand feature value.

[0040] Optionally, the attributes of the visual feature include size and / or shape;

[0041] The larger the hand feature value is, the larger the vision feature is; the smaller the hand feature value is, the smaller the vision feature is;

[0042] The larger the hand feature value is, the smaller the curvature of the vision feature is; and the smaller the hand feature value is, the larger the curvature of the vision feature is.

[0043] By adopting the above technical solution, the hand feature value can refer to the gesture for screen zooming. When the hand feature value is small, it means that the image can be seen clearly without zooming in. On the contrary, when zooming in is required, the hand feature value will be opened. The larger the hand feature value, the more difficult it is for the person being tested to see the current identifier. Similarly, when the image cannot be seen clearly and zooming in is required, the hand feature value will be larger. At this time, the smaller the curvature, the more conducive it is to see clearly. On the contrary, when the image can be seen clearly and zooming in is not required, the hand feature value will be smaller, and the curvature will be larger.

[0044] Optionally, the attribute of the vision feature includes a line type, and the larger the hand feature value is, the thicker the line type of the vision feature is.

[0045] By adopting the above technical solution, the thicker the line type, the more obvious the graphics can be, and therefore, easier to see.

[0046] On the other hand, the present application provides a display content switching device of a portable display device, which adopts the following technical solution:

[0047] A display content interaction device of a portable display device comprises a processor, wherein a program of the display content interaction method of the portable display device is run in the processor.

[0048] On the other hand, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0049] A computer-readable storage medium stores executable instructions, and when the executable instructions are executed by a processor, the display content interaction method of any one of the portable display devices described above is executed.

[0050] In summary, the present application includes at least one of the following beneficial technical effects: vision testing is achieved through an interactive method, and during the vision test, adaptive adjustments are made according to the content of the interaction to make it more appropriate to the vision of the person being tested or other factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a step diagram of a display content interaction method of a portable display device of the present application.

[0052] Figure 2 It is a graphic of a first vision identifier in a display content interaction method of a portable display device of the present application.

[0053] Figure 3 It is a graphic of a second vision identifier in a display content interaction method of a portable display device of the present application.

[0054] Figure 4 This is a display content interaction method for a portable display device of the present application, a step diagram of playing a third vision identifier.

[0055] Figure 5 It is a graphic whose third vision identifier is M in a display content interaction method of a portable display device of the present application.

[0056] Figure 6 It is a graphic whose third vision identifier is N in a display content interaction method of a portable display device of the present application.

[0057] Figure 7 It is a graphic whose third vision identifier is V in a display content interaction method of a portable display device of the present application.

[0058] Figure 8 It is a graphic whose third vision identifier is U in a display content interaction method of a portable display device of the present application.

[0059] Fig. 9This is a display content interaction method of a portable display device of the present application, and a step diagram for calculating a comprehensive vision value.

[0060] Fig.10 This application discloses a method for interactively displaying contents of a portable display device, and a step diagram for outputting variable vision values.

[0061] Fig.11 The present application discloses a display content interaction method of a portable display device, and a reduced hand feature map.

[0062] Fig.12 The present application discloses a display content interaction method of a portable display device, and an enlarged hand feature map.

[0063] Fig.13 This application discloses a method for interactive display content of a portable display device and a method diagram for a variable vision identifier.

[0064] Fig.14 The present application discloses a display content interaction method for a portable display device and a change diagram of a variable vision identifier. DETAILED DESCRIPTION

[0065] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0066] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0067] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0068] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0069] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0070] The present application embodiment discloses a display content interaction method of a portable display device, referring to Figure 1 , a display content interaction method of a portable display device, comprising the following steps:

[0071] The first sight identifier of the playback preset; reference Figure 2 , the first vision identifier can be an E-vision chart.

[0072] The first gesture data of the person being measured is collected; the first gesture data is data corresponding to the pointing feature of the finger.

[0073] A first test value is calculated according to the first gesture data; and a first test value corresponding to the first gesture data is obtained through gesture recognition.

[0074] Compare the first test value with the first vision identifier. If the first test value matches the reference value corresponding to the first vision identifier, it means that the gesture is pointing correctly, and then play the preset next first vision identifier to continue testing the vision. If the first test value does not match the reference value corresponding to the first vision identifier, it means that the person being tested may not be able to see the first vision identifier clearly, and it is necessary to output the first vision value corresponding to the current vision identifier; calculate the gesture feature based on the first gesture data, play the preset second vision identifier corresponding to the gesture feature; collect the second gesture data of the person being tested; and continue to identify the gesture data through gesture recognition based on the corresponding second vision identifier.

[0075] A second test value is calculated according to the second gesture data; the finger pointing is confirmed by gesture recognition technology, and the second test value is obtained.

[0076] Compare the second test value with the second vision identifier. If the second test value matches the reference value corresponding to the second vision identifier, play the preset next second vision identifier; if the second test value does not match the reference value corresponding to the second vision identifier, output the second vision value corresponding to the current vision identifier. Select the corresponding second vision identifier through gesture features. Reference Figure 3 For example, if the gesture feature is that of a younger hand, then the corresponding chart is a children's logarithmic vision chart, which contains features such as animal figures, and the gesture feature can be judged according to the direction of the figure; or, if the gesture feature is that of a teenager, then the C sub-chart can also be used, for example, the C sub-chart can be a chart used for air force vision testing.

[0077] Through the gesture of the person being tested, it is determined whether the current vision identifier can be seen clearly. If the gesture matches the vision identifier, the next vision identifier is played. The next vision identifier can be smaller and change direction, etc. If it does not match, the corresponding first vision value is output, and the corresponding second vision identifier is continued to be used for testing. In the method of measuring vision, the function of interaction between gestures and display devices is realized. In addition, the first vision identifier is preset, and the second vision identifier is a preset diagram corresponding to the characteristics of the gesture. Therefore, the second vision identifier may be different according to different persons being tested. Therefore, it is conducive to more appropriate characteristics of the person being tested and realize vision testing.

[0078] Reference Figure 4 , the method further comprises the following steps:

[0079] Calculate the algorithm difference between the first vision value and the second vision value; the two algorithm differences are conducive to measuring more accurate vision values.

[0080] The preset third vision identifier corresponding to the algorithm difference is played according to the algorithm difference. The third vision identifier is matched with the algorithm difference, which is more conducive to matching the identifier required by the vision characteristics of the person being tested.

[0081] The algorithm difference is taken according to the results of multiple previous measurements to match the selection of the third vision identifier, which is more conducive to further improving the interactive performance and test accuracy.

[0082] The method further comprises the steps of:

[0083] The number of corners in the pattern of the third visual identifier is adjusted according to the algorithm difference positive correlation. Figure 5-Figure 8 , the third vision identifier can be M / N / V / U or other lines / animals, etc., containing the number of corners. Generally speaking, the more corners there are in the third vision identifier, the better vision is required to see clearly. Therefore, the better the vision value (not the eye degree), the more corners can be increased. For example, U is the initial vision identifier, which contains 2 corners; if it can be identified, the next one shown is V, which contains 3 corners, and so on.

[0084] The number of corners can be achieved by using the corner detection algorithm in image recognition technology. Corner points refer to the corners or turning points of the edges in the image. Due to these characteristics, corner points have become one of the most important features in image detection. In practical applications, corner points can be used for tasks such as object positioning, tracking, and matching.

[0085] In the preset graphics of the same size, the more angles there are, the more complex the graphics are. The more complex the graphics are, the harder it is to see clearly. In turn, the smaller the number of angles, the simpler the graphics are, and therefore, the easier it is to see clearly. Therefore, if the result obtained by the algorithm difference corresponds to the better vision of the subject, the graphics with a larger number of angles can be matched for further testing. On the contrary, if the vision of the subject obtained by the algorithm difference is lower, the structure of the matching graphics can be seen, so as to facilitate further vision testing of the subject.

[0086] Reference Fig. 9 , the method further comprises the following steps:

[0087] The third gesture data of the measured person is collected; and a photo corresponding to the third gesture can be obtained through gesture recognition.

[0088] Calculating a third test value according to the third gesture data;

[0089] Compare the third test value with the third vision identifier. If the third test value matches the reference value corresponding to the third vision identifier, play the preset next third vision identifier; if the third test value does not match the reference value corresponding to the third vision identifier, output the third vision value corresponding to the current vision identifier.

[0090] The comprehensive vision value is calculated based on the first vision value, the second vision value and the third vision value. The comprehensive vision value can combine the data of the previous three test methods, which not only increases the degree of interaction between the test subject and the device, but also the comprehensive test helps to improve the accuracy of the test results.

[0091] Reference Fig.10 , the method further comprises the following steps:

[0092] Calculate the difference between the first vision value and the second vision value as a first difference;

[0093] If the first difference is greater than the preset reference difference, the preset variable vision identifier is played; the variable vision identifier can be Ω or other lines / animals and other shapes, and the graphics can be variable.

[0094] Collect the fourth gesture data of the person being tested in real time; real-time collection is required at this time, that is, multiple gesture recognitions can be performed within the test period;

[0095] Reference Fig.11 and Fig.12 , a hand feature value is calculated according to the fourth gesture data; the hand feature may be a zoom-in action or a zoom-out action, and reference may be made to the zoom function of the screen triggered by a finger in the prior art. Through gesture recognition technology, it is determined to be a zoom-in or zoom-out action.

[0096] The variable vision identifier is adjusted according to the hand feature value; if the hand feature is a magnifying action, it means that the subject cannot see the identifier clearly, and the variable vision identifier is increased by a set multiple or produces other changes in shape.

[0097] Within a preset time period, if the change value of the variable vision identifier is less than the preset change reference value, the variable vision value corresponding to the current variable vision identifier is output. Since the hand features are collected in real time, if you still can't see clearly, you can continue to adjust the features of the identifier to make it easier to see. If the hand features do not change much, it means that there is no need to adjust the identifier. At this time, the corresponding test result is a more appropriate test data.

[0098] Reference Fig.13 and Fig.14 , the method further comprises the following steps:

[0099] The variable vision identifier has a variable vision feature, and the attribute of the vision feature in the variable vision identifier is adjusted according to the hand feature value. The attribute of the vision feature includes size and / or shape.

[0100] One way is to change the size of the vision feature: the larger the hand feature value, the larger the vision feature; the smaller the hand feature value, the smaller the vision feature; for example, when the variable vision identifier is Ω, if it is recognized as a zoom-in action, the entire image is enlarged in proportion, otherwise, it is reduced.

[0101] Another way is to change the curvature of the visual feature: the larger the hand feature value, the smaller the curvature of the visual feature; the smaller the hand feature value, the larger the curvature of the visual feature. If it is recognized as a magnification action, the corresponding curvature is smaller, for example, the larger the angle of the two small branches below the Ω, the easier it is to see clearly.

[0102] In other embodiments, the attributes of the vision feature may further include a line type, and the greater the hand feature value, the thicker the line type of the vision feature. The thicker the line type, the more obvious the graphic is, and thus, easier to see.

[0103] In other embodiments, the attributes of the vision feature may further include a rotation angle, where the larger the hand feature value, the clockwise rotation, and vice versa, the counterclockwise rotation.

[0104] In the actual comprehensive calculation process, any one or more of the above four methods can be combined, and the corresponding weight of each method can be set, so as to further optimize the identifier of the vision test and further improve the performance of the interaction.

[0105] An embodiment of the present application discloses a display content interaction device of a portable display device, including a processor, in which a program of the display content interaction method of the portable display device is executed.

[0106] The embodiment of the present application discloses a computer-readable storage medium storing a program of the display content interaction method of the portable display device mentioned above.

[0107] It should be noted that the computer-readable medium recorded in some embodiments of the present disclosure may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In some embodiments of the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In some embodiments of the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer readable signal medium may also be any computer readable medium other than a computer readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0108] In some embodiments, the client and the server may communicate using any currently known or future developed network protocol such as HTTP (HyperText Transfer Protocol), and may be interconnected with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), an internet (e.g., the Internet), and a peer-to-peer network (e.g., an ad hoc peer-to-peer network), as well as any currently known or future developed network.

[0109] Computer program code for performing the operations of some embodiments of the present disclosure may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0110] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0111] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0112] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A display content interaction method for a portable display device, characterized in that: The steps include: Play the preset first sight identifier; Collecting first gesture data of the person being measured; Calculating a first test value according to the first gesture data; Comparing the first test value with the first vision identifier, if the first test value matches the reference value corresponding to the first vision identifier, playing the preset next first vision identifier; if the first test value does not match the reference value corresponding to the first vision identifier, outputting the first vision value corresponding to the current vision identifier, calculating the gesture feature according to the first gesture data, and playing the preset second vision identifier corresponding to the gesture feature; Collecting second gesture data of the person being measured; Calculating a second test value according to the second gesture data; Compare the second test value with the second vision identifier. If the second test value matches the reference value corresponding to the second vision identifier, play the preset next second vision identifier; if the second test value does not match the reference value corresponding to the second vision identifier, output the second vision value corresponding to the current vision identifier.

2. The display content interaction method of the portable display device according to claim 1, characterized in that: The method further comprises the steps of: Calculate an algorithmic difference between the first vision value and the second vision value; A preset third vision identifier corresponding to the algorithm difference is played according to the algorithm difference.

3. The display content interaction method of the portable display device according to claim 2, characterized in that: The method further comprises the steps of: The number of corners in the pattern of the third vision identifier is adjusted in positive correlation with the algorithm difference.

4. The display content interaction method of the portable display device according to claim 2 or 3, characterized in that: The method further comprises the steps of: Collecting the third hand gesture data of the person being measured; Calculating a third test value according to the third gesture data; Comparing the third test value with the third vision identifier, if the third test value matches the reference value corresponding to the third vision identifier, playing the preset next third vision identifier; if the third test value does not match the reference value corresponding to the third vision identifier, outputting the third vision value corresponding to the current vision identifier; A comprehensive vision value is calculated according to the first vision value, the second vision value and the third vision value.

5. The display content interaction method of a portable display device according to claim 1, characterized in that: The method further comprises the steps of: Calculate the difference between the first vision value and the second vision value as a first difference; If the first difference is greater than a preset reference difference, playing a preset variable vision identifier; Collecting the fourth hand gesture data of the person being measured in real time; Calculating a hand feature value according to the fourth gesture data; adjusting the variable vision identifier according to the hand characteristic value; Within a preset time period, if the change value of the variable vision identifier is less than a preset change reference value, the variable vision value corresponding to the current variable vision identifier is output.

6. The display content interaction method of the portable display device according to claim 5, characterized in that: The method further comprises the steps of: The variable vision identifier has a variable vision feature, and the attribute of the vision feature in the variable vision identifier is adjusted according to the hand feature value.

7. The display content interaction method of the portable display device according to claim 6, characterized in that: The attributes of the visual feature include size and / or shape; The larger the hand feature value is, the larger the vision feature is; the smaller the hand feature value is, the smaller the vision feature is; The larger the hand feature value is, the smaller the curvature of the vision feature is; and the smaller the hand feature value is, the larger the curvature of the vision feature is.

8. The display content interaction method of the portable display device according to claim 6 or 7, characterized in that: The attributes of the vision feature include line type, and the greater the hand feature value, the thicker the line type of the vision feature.

9. A display content interaction device for a portable display device, characterized in that: The device comprises a processor, wherein a program of the display content interaction method of the portable display device according to any one of claims 1 to 8 is run in the processor.

10. A computer-readable storage medium, characterized in that: The storage medium stores executable instructions, and when the executable instructions are executed by a processor, the display content interaction method of the portable display device according to any one of claims 1 to 8 is executed.

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