A method, device, and equipment for detecting near-eye display performance

Abstract

The present application relates to a near-eye display performance detection method, apparatus and device. The method includes: determining a near-eye display performance detection item to be detected; determining a detection quantity, a detection direction and a detection threshold according to the near-eye display performance detection item; determining the value of the detection quantity according to an image displayed by a near-eye display device to be detected collected by an optical measurement device at a current position; updating a position adjustment parameter of the optical measurement device according to the value of the detection quantity, the detection direction and the detection threshold; adjusting the position of the optical measurement device to a target position according to the updated position adjustment parameter; calculating the amount of movement of the optical measurement device when the optical measurement device moves from an initial position to the target position; and calculating the value of the near-eye display performance detection item according to the amount of movement of the optical measurement device, thereby completing the near-eye display performance detection. By means of the present application, the problem that the detection mode of full-field point scanning in the related art is time-consuming is solved.

Description

Technical Field

[0001] The present application relates to the field of near-eye display technology, and particularly to a method, device, and equipment for detecting near-eye display performance. Background Art

[0002] With the increasing popularity of near-eye display devices (AR / VR / MR) products, the evaluation requirements for the display performance of each product are also increasing. Optical properties and the quality of the displayed image are important indicators for evaluating the display effect of near-eye display devices. Optical properties include: brightness, brightness uniformity, contrast, field of view, color coordinates, color temperature, eye box size, eye point position, etc. Image quality indicators include: distortion, chromatic aberration, virtual image distance, modulation contrast, etc.

[0003] There are mainly two forms of existing near-eye display device detection equipment: one is a detection device configured with a large field of view camera for near-eye display devices with a large field of view (VR). The detection methods of such devices are all to detect various optical display performances of near-eye display devices by collecting a full-field image and using image segmentation and extraction techniques. This often requires high-precision calibration of the detection camera of the detection device. The other is for near-eye display devices with a small to medium field of view, using a small field of view camera and implementing the detection of various optical display performances of near-eye display devices in a full-field point-scanning mode. And the full-field point-scanning detection mode is relatively time-consuming.

[0004] Regarding the problem that the full-field point-scanning detection mode in the related art is relatively time-consuming, no effective solution has been proposed yet. Summary of the Invention

[0005] In this embodiment, a method, device, and equipment for detecting near-eye display performance are provided to solve the problem that the full-field point-scanning detection mode in the related art is relatively time-consuming.

[0006] In the first aspect, in this embodiment, a method for detecting near-eye display performance is provided. The method is used for a near-eye display detection device, and the near-eye display detection device includes an optical measurement device. The method includes:

[0007] Determine the near-eye display performance detection item to be detected;

[0008] Determine the detection quantity, detection direction, detection threshold, and the movement step size of the optical measurement device according to the near-eye display performance detection item;

[0009] Determine the value of the detection quantity according to the image displayed by the near-eye display device to be detected collected by the optical measurement device at the current position;

[0010] Update the position adjustment parameters of the optical measurement device or determine the current position as the target position according to the value of the detected quantity, the detection direction, and the detection threshold; the position adjustment parameters of the optical measurement device include the movement direction of the optical measurement device and the movement step length of the optical measurement device.

[0011] Adjust the position of the optical measurement device to the target position according to the updated position adjustment parameters; at the target position, the value of the detected quantity is within the detection threshold range or the movement step length is the preset minimum value.

[0012] Calculate the amount of movement of the optical measurement device when the optical measurement device moves from the initial position to the target position.

[0013] Calculate the value of the near-eye display performance detection item according to the amount of movement of the optical measurement device, and complete the near-eye display performance detection.

[0014] In some embodiments, the updating of the position adjustment parameters of the optical measurement device according to the value of the detected quantity, the detection direction, and the detection threshold includes,

[0015] When the value of the detected quantity exceeds the upper limit of the detection threshold range, determine whether the current movement direction of the optical measurement device is consistent with the detection direction;

[0016] If they are consistent, set the movement direction of the next step of the optical measurement device to the current detection direction;

[0017] If they are not consistent, when the current movement step length of the optical measurement device is not the preset minimum value, set the movement direction of the next step of the optical measurement device to the current detection direction, and reduce the movement step length of the next step of the optical measurement device.

[0018] In some embodiments, the updating of the position adjustment parameters of the optical measurement device according to the value of the detected quantity, the detection direction, and the detection threshold includes,

[0019] When the value of the detected quantity is less than the lower limit of the detection threshold range, determine whether the current movement direction of the optical measurement device is consistent with the detection direction;

[0020] If they are consistent, determine the movement direction of the next step of the optical measurement device to be the opposite direction of the current detection direction;

[0021] If they are not consistent, when the current movement step length of the optical measurement device is not the preset minimum value, determine the movement direction of the next step of the optical measurement device to be the opposite direction of the current detection direction, and reduce the movement step length of the next step of the optical measurement device.

[0022] In some of these embodiments, the amount of movement of the optical measurement device includes the distance the optical measurement device moves from the initial position to the target position and / or the angle of rotation.

[0023] In some of these embodiments, the item to be detected for the near-eye display performance is the field of view angle detection, the detected quantity is the image brightness or image sharpness of the detection point, and the detection point is the center point of the image collected by the optical measurement device.

[0024] In some of these embodiments, the item to be detected for the near-eye display performance is the field of view angle detection, and the detected quantity is the Euclidean distance from the boundary or corner point of the collected image to the center of the image.

[0025] In some of these embodiments, the item to be detected for the near-eye display performance is the eye box detection, the detected quantity is the image brightness or image sharpness of the detection point, and the detection point is the center point of the image collected by the optical measurement device.

[0026] In some of these embodiments, the item to be detected for the near-eye display performance is the eye point detection, the detected quantity is the image brightness or image sharpness of the detection point, and the detection point is the center point of the image collected by the optical measurement device;

[0027] When calculating the amount of movement of the optical measurement device from the initial position to the target position, the amount of movement of the optical measurement device further includes obtaining the edge coordinates of the eye box on both sides of the eye point according to the amount of movement of the optical measurement device from the initial position to the target position;

[0028] Determine the position adjustment amount of the eye point according to the edge coordinates;

[0029] Adjust the position of the eye point according to the position adjustment amount;

[0030] When the position adjustment amount is less than the preset value, output the current position of the eye point to complete the eye point position detection.

[0031] In a second aspect, a near-eye display performance detection device is provided in this embodiment. The device includes,

[0032] A first determination module, configured to determine the item to be detected for the near-eye display performance, and determine the detected quantity, detection direction, detection threshold, and the movement step of the optical measurement device according to the near-eye display performance detection item;

[0033] A second determination module, configured to determine the value of the detected quantity according to the image of the near-eye display device to be detected collected by the optical measurement device at the current position;

[0034] A parameter update module, configured to update the position adjustment parameters of the optical measurement device according to the value of the detected quantity, the detection direction, and the detection threshold; the position adjustment parameters of the optical measurement device include the movement direction of the optical measurement device and the movement step length of the optical measurement device.

[0035] A position adjustment module, configured to adjust the position of the optical measurement device to a target position according to the updated position adjustment parameters; at the target position, the value of the detected quantity is within the detection threshold range or the movement step length is a preset minimum value.

[0036] A first calculation module, configured to calculate the movement amount of the optical measurement device when the optical measurement device moves from the initial position to the target position.

[0037] A second calculation module, configured to calculate the value of the near-eye display performance detection item according to the movement amount of the optical measurement device, and complete the near-eye display performance detection.

[0038] In a third aspect, in this embodiment, a near-eye display detection device is provided, and the device includes an optical measurement device, a moving platform, and a control device. The optical measurement device is configured to collect an image displayed by the to-be-tested near-eye display device. The optical measurement device is mounted on the moving platform. The control device is configured to control the optical measurement device and the moving platform. The control device includes a memory and a processor. A computer program is stored in the memory. The processor is configured to run the computer program to execute the near-eye display performance detection method described in the first aspect.

[0039] In a fourth aspect, in this embodiment, an electronic device is provided, including a memory and a processor. A computer program is stored in the memory. The processor is configured to run the computer program to execute the near-eye display performance detection method described in the first aspect.

[0040] In a fifth aspect, in this embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the near-eye display performance detection method described in the first aspect are implemented.

[0041] Compared with the related art, a near-eye display performance detection method and device provided in this embodiment adjust the position of the detection probe according to the relationship between the specific value of the detection quantity at the current position and the detection threshold and the detection direction by setting the detection quantity, detection direction, and detection threshold. When the threshold is met, that is, the corresponding edge is detected, and parameters such as the eyebox and field of view are calculated according to the amount of movement of the detection probe to the target position, solving the problem that the detection mode of full-field point scanning in the related art is time-consuming.

[0042] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects, and advantages of this application more concise and understandable. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The drawings described herein are used to provide a further understanding of this application and constitute a part of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0044] Figure 1 is a flowchart of a near-eye display performance detection method according to this embodiment;

[0045] Figure 2 is a flowchart of a target position search method according to this embodiment;

[0046] Figure 3 is a schematic diagram of a near-eye display detection device according to this embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] To more clearly understand the purpose, technical solution, and advantages of this application, the following describes and explains this application with reference to the drawings and embodiments.

[0048] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meanings understood by those with ordinary skills in the technical field to which this application belongs. In this application, words such as "a", "an", "one kind", "the", "these" and the like do not indicate a limitation in quantity, and they can be singular or plural. The terms "comprising", "including", "having" and any variants thereof involved in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent in these processes, methods, products or devices. The words such as "connected", "linked", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly connected. The "plurality" involved in this application means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. Usually, the character " / " indicates that the objects associated before and after are in an "or" relationship. The terms "first", "second", "third" and the like involved in this application are only used to distinguish similar objects and do not represent a specific order for the objects.

[0049] In this embodiment, a method for detecting the performance of a near-eye display is provided. Figure 1 It is a flowchart of a method for detecting the performance of a near-eye display in this embodiment, as Figure 1 shown, and the process includes the following steps:

[0050] Step S102, determine the near-eye display performance detection item to be detected.

[0051] The near-eye display detection device is used to detect the near-eye display performance of a near-eye display device (AR / VR / MR). The near-eye display performance detection items of the near-eye display device include but are not limited to optical properties and the image quality of the displayed image. The optical properties include: brightness, brightness uniformity, contrast, field of view angle, color coordinates, color temperature, eye box size, etc. The image quality indicators include: distortion, chromatic aberration, virtual image distance, modulation contrast, etc. The near-eye display detection device determines the near-eye display performance detection item to be detected of the near-eye display device to be detected. The near-eye display detection device includes an optical measurement device, and this optical measurement device is used to collect the image displayed by the near-eye display device, and this optical measurement device can be a detection probe.

[0052] Step S104, determine the detection quantity, detection direction, detection threshold and the movement step size of the optical measurement device according to the near-eye display performance detection item.

[0053] The near-eye display detection device determines the detection quantity, detection direction, detection threshold, and the movement step of the optical measurement device according to the determined near-eye display performance detection items. The near-eye display detection device acquires the images displayed by the near-eye display device.

[0054] When the near-eye display performance detection item is the field of view angle detection, the detection quantity can be the image brightness or image clarity of the detection point, and the detection point is the center point of the image acquired by the near-eye display detection device; the detection quantity can also be the Euclidean distance from the boundary or corner point of the acquired image to the center of the image. When the near-eye display performance detection item is the eye box detection, the detection quantity can be the image brightness or image clarity of the detection point, and the detection point is the center point of the image acquired by the near-eye display detection device.

[0055] The detection direction is the overall detection direction. For example, when detecting the upper edge field of view angle of the near-eye display device, the detection direction is upward; when detecting the left edge field of view angle of the near-eye display device, the detection direction is left; when detecting the lower edge eye box of the near-eye display device, the detection direction is downward; when detecting the right edge eye box of the near-eye display device, the detection direction is right. The movement step of the optical measurement device can be the moving distance of the optical measurement device or the rotation angle of the optical measurement device.

[0056] When the near-eye display detection device moves to the target position, the value of the detection quantity is within the range of the detection threshold or the movement step of the optical measurement device at the target position is the preset minimum value. The range of the detection threshold can be calculated based on the value of the detection quantity at the specified position, and the specified position is the center of the acquired image or a certain proportion of the field of view edge position.

[0057] Step S106, determine the value of the detection quantity according to the image displayed by the near-eye display device to be detected acquired by the optical measurement device at the current position.

[0058] The current position can be the detection starting position or the position after the near-eye display detection device is adjusted by movement. Before the test, the position of the optical measurement device should be adjusted to ensure that the entrance pupil center of the optical measurement device is located at the eye point position of the near-eye display device to be measured, and the optical axis of the probe is parallel to the optical axis of the near-eye display device to be measured. This position can be used as the detection starting position.

[0059] Step S108, update the position adjustment parameters of the optical measurement device or determine the current position as the target position according to the value of the detection quantity, the detection direction, and the detection threshold; the position adjustment parameters of the optical measurement device include the movement direction of the optical measurement device and the movement step of the optical measurement device.

[0060] When the value of the detected quantity exceeds the detection threshold range, update the position adjustment parameters of the optical measurement device. When the value of the detected quantity is within the detection threshold range or the movement step of the optical measurement device is the preset minimum value, determine the current position as the target position. After determining the target position, calculate the movement amount of the optical measurement device when moving from the initial position to the target position. According to whether the value of the detected quantity at the current position is within the detection threshold range and the detection direction, the movement direction and movement step of the optical measurement device in the next step can be determined, or the optical measurement device has moved to the target position. The movement direction can be the same as or different from the detection direction, and the movement step can be the moving distance of the optical measurement device or the rotation angle of the optical measurement device. For example, when the detected quantity is the image brightness of the center point of the image collected by the near-eye display detection device, determine whether the brightness is within the preset detection threshold range, and then determine the movement direction and movement step of the optical measurement device in the next step according to the detection direction.

[0061] Step S110, adjust the position of the optical measurement device to the target position according to the updated position adjustment parameters; the value of the detected quantity determined at the target position is within the detection threshold range or the movement step is the preset minimum value.

[0062] The near-eye display detection device adjusts the position of the optical measurement device according to the updated movement direction and movement step of the optical measurement device, and determines whether the value of the detected quantity at the current position is within the detection threshold range. If not, continue to adjust the position of the optical measurement device until the target position, and the value of the detected quantity determined at the target position is within the detection threshold range or the movement step is the preset minimum value.

[0063] Step S112, calculate the movement amount of the optical measurement device when moving from the initial position to the target position.

[0064] The near-eye display detection device calculates the movement amount of the optical measurement device when moving from the initial position to the target position. The movement amount can be the moving distance of the optical measurement device when moving from the initial position to the target position, or the rotation angle of the optical measurement device.

[0065] Step S114, calculate the value of the near-eye display performance detection item according to the movement amount of the optical measurement device, and complete the near-eye display performance detection.

[0066] The near-eye display detection device calculates the value of the near-eye display performance detection item according to the moving distance and / or rotation angle of the optical measurement device when moving from the initial position to the target position. For example, when the near-eye display performance detection item is the eye box detection, the moving distance of the optical measurement device to the left is x L , the moving distance of the optical measurement device to the right is x R, the distance that the optical measurement device moves upward is y u , the distance that the optical measurement device moves downward is y d , then the value of the horizontal eye box detected by the eye box detection is w box = x L + x R , the value of the vertical eye box is H box = y u + y d .

[0067] Through the above steps, by setting the detection quantity, detection direction, and detection threshold, according to the relationship between the specific value of the detection quantity at the current position and the detection threshold and the detection direction, the position of the detection probe is adjusted. When the threshold is met, that is, the corresponding edge is detected, and parameters such as the eye box and field of view angle are calculated based on the amount of movement of the detection probe to the target position, solving the problem that the detection mode of full-field point scanning in the related art is time-consuming.

[0068] In this embodiment, a target position search method is provided. Figure 2 is a flowchart of a target position search method in this embodiment, as Figure 2 shown, this process includes the following steps:

[0069] Step S202, preset the initial movement step size, detection direction, and detection threshold range, and start detection;

[0070] Step S204, input the current movement step size, movement direction, detection direction, current detection value, and threshold range;

[0071] Step S206, determine whether the current detection value is within the threshold range; if the current detection value exceeds the upper limit of the threshold range, execute step S208; if the current detection value is less than the lower limit of the threshold range, execute step S210; if the current detection value is within the threshold range, execute step S212;

[0072] Step S208, determine whether the current movement direction is the same as the detection direction. If so, execute step S2082; if not, execute step S2084.

[0073] Step S2082, set the movement direction as the detection direction, and execute step S204.

[0074] Step S2084, determine whether the current movement step size is the minimum preset step size; if so, execute step S212; if not, execute step S2086.

[0075] Step S2086, reduce the movement step size, and execute step S2082.

[0076] Step S210, determine whether the current movement direction is the same as the detection direction. If so, execute step S2102; if not, execute step S2104.

[0077] Step S2102, set the movement direction to the direction opposite to the detection direction, and execute step S204.

[0078] Step S2104, determine whether the current movement step size is the minimum preset step size. If so, execute step S212; if not, execute step S2106.

[0079] Step S2106, reduce the movement step size, and execute step S2102.

[0080] Step S212, output the distance and / or angle of the movement from the starting position to the current position.

[0081] Step S214, complete the search.

[0082] In this embodiment, both the movement step size and the movement direction are the movement step size and the movement direction of the optical measurement device of the near-eye display detection device.

[0083] Through the above steps, by setting the detection quantity, the detection direction, and the detection threshold, adjusting the position of the detection probe according to the relationship between the specific value of the detection quantity at the current position and the detection threshold and the detection direction, when the threshold is met, that is, the corresponding edge is detected, and calculating parameters such as the eyebox and the field of view angle according to the amount of movement of the detection probe to the target position, the problem that the detection mode of full-field point scanning in the related art is time-consuming is solved.

[0084] In some of these embodiments, a method for detecting the field of view angle based on the detection value is provided. Specifically, the near-eye display device to be measured displays a white field image or a clarity detection image, and the detection value input into the target position search method in the foregoing embodiment is the brightness or clarity of the detection point, and the detection point is the center point of the image collected by the near-eye display detection device. Based on this search method, the robotic arm is called to rotate, and the robotic arm drives the detection probe to move, automatically searching to a position where the detection value meets the threshold range. The calculation of the threshold range is based on the detection value at the specified position, and the specified position is the center of the image or a position at a certain proportion of the field of view edge. According to the recorded angle of rotation to the position that meets the threshold range, the size of the field of view angle is calculated.

[0085] Horizontal field of view angle A h The calculation formula is, where, A h is the horizontal field of view angle, is the azimuth angle of the left boundary, is the azimuth angle of the right boundary.

[0086] Vertical field of view angle A vThe calculation formula of A is as follows: v = α T + α B . Wherein, A v is the horizontal field of view angle, α T is the pitch angle of the top edge, and α B is the pitch angle of the bottom edge.

[0087] The calculation formula of the diagonal field of view angle A d is as follows: Wherein, A d1 is the diagonal field of view angle from the upper left to the lower right, and A d2 is the diagonal field of view angle from the upper right to the lower left.

[0088]

[0089] Wherein, is the azimuth angle of the upper left corner point; α TL is the pitch angle of the upper left corner point; is the azimuth angle of the lower right corner point; α BR is the pitch angle of the lower right corner point.

[0090]

[0091] Wherein, is the azimuth angle of the upper right corner point; α TR is the pitch angle of the upper right corner point; is the azimuth angle of the lower left corner point; α BL is the pitch angle of the lower left corner point.

[0092] In this embodiment, the azimuth angle and the pitch angle are both the angles at the positions where the detection probe rotates to meet the threshold range. The target position can be searched according to the target position search method in the above embodiment, and the above azimuth angle and pitch angle can be obtained according to the angle by which the detection probe rotates from the starting position to the target position.

[0093] In some of these embodiments, a method for detecting the field of view angle based on boundary and corner extraction is provided. Specifically, the near-eye display device to be measured displays a white field image, the boundaries or corners in the image are extracted, and the detection value input into the target position search method in the foregoing embodiment is the Euclidean distance between the extracted boundaries or corners and the center of the screen. Based on this search method, the robotic arm is called to rotate, and automatically searched to the position where the Euclidean distance meets the threshold range, so that the center of the detection probe is aligned with the position of the edge or corner. The threshold range can be adjusted by itself according to the detection accuracy requirements. According to the recorded angle when the probe is aligned with the boundary or corner, the size of the field of view angle is calculated.

[0094] In some of these embodiments, a method for detecting an eyebox based on detection values is provided. Specifically, the near-eye display device to be measured displays a white field or a clarity detection image, and the detection value input into the target position search method of the foregoing embodiments is the brightness or clarity of the detection point. Based on the search method, a robotic arm is called to rotate and translate, automatically searching for a position where the detection value meets the threshold range. The calculation of the threshold range is based on the detection value at a specified position, and the specified position is the image center or a position at a certain proportion of the field of view edge. According to the recorded translation distance of the movement to the position that meets the threshold range, combined with the entrance pupil size of the detection probe, the eyebox size is calculated. The eyebox is the three-dimensional space range where the wearer's eyes are located when the wearer can see the entire virtual image displayed by the device to be measured without moving the head or making other adjustments (except for the natural rotation of the eyes).

[0095] Horizontal eyebox W box The calculation formula for is, W box = x L + x R , which is applicable to the case where the threshold calculation is based on the detection value at the center point and only translational motion is performed, or W box = x L + x R + p, which is applicable to the case where the threshold calculation is based on the detection value at a certain proportion of the field of view edge position and rotational and translational motions are performed. Wherein, x L is the distance of movement to the left; x R is the distance of movement to the right; p is the entrance pupil size, which is determined by the nature of the detection probe.

[0096] Vertical eyebox H box The calculation formula for is, H box = y T + y B , which is applicable to the case where the threshold calculation is based on the detection value at the center point and only translational motion is performed, H box = y T + y B + p, which is applicable to the case where the threshold calculation is based on the detection value at a certain proportion of the field of view edge position and rotational and translational motions are performed. Wherein, y T is the distance of movement upward; y B is the distance of movement downward; p is the entrance pupil size, which is determined by the nature of the detection probe.

[0097] The calculation of the threshold range is based on the center point brightness value. By detecting the eye box based on the center point brightness value, the threshold range can be 50% (±10%) of the center point brightness (depending on the required detection accuracy and the display brightness uniformity of the near-eye display device to be measured). Based on the search method, if a position is found where the brightness value is within the threshold range, it is considered that the edge of the eye box in that direction has been found. The calculation of the threshold range is based on the center point brightness value. By detecting the eye box based on the edge point brightness value, the threshold range can be 50% (±10%) of a certain proportion of the field of view edge position (such as 80% of the field of view edge position) in the current detection direction. Based on the search method, if a position is found where the brightness value is within the threshold range, it is considered that the edge of the eye box in that direction has been found.

[0098] In some of these embodiments, an eye point position detection method is provided. The eye point position detection method includes the following steps:

[0099] Step S302, adjust the optical measurement device to the starting position.

[0100] The starting position of the optical measurement device is the initial eye point position. At the initial position, the center of the optical measurement device is aligned with the center of the displayed image of the near-eye display device to be measured. The distance from the eye point to the near-eye display device to be measured is the suitable eye distance. Generally, the suitable eye distance should be provided by the manufacturer or the seller; if not given, the default value is 22 mm. The eye point refers to the position where the entrance pupil of the wearer's eye is located when the optimal display performance of the eye-worn display can be obtained. The eye point is usually used as the origin position of the optical measurement. Unless otherwise specified, the position of the eye point is at the center of the exit pupil of the eye-worn display.

[0101] Step S304, set the initial detection direction to the vertical direction.

[0102] Step S306, adjust the optical measurement device to the target position.

[0103] Adopt the eye box detection method in the above embodiments to adjust the optical measurement device to the target position.

[0104] Step S308, obtain the edge coordinates of the eye box on both sides of the eye point according to the movement amount of the optical measurement device from the initial position to the target position.

[0105] According to the movement amount of the optical measurement device from the initial position to the target position, obtain the edge coordinates of the eye box on both sides of the eye point. The horizontal coordinates of the edge coordinates of the eye box on both sides of the eye point are x L and x R , and the vertical coordinates are y T and y B .

[0106] Step S310: Calculate the eye point position adjustment amount in the detection direction, and adjust the position of the eye point according to the eye point position adjustment amount.

[0107] The eye point position adjustment amount is such that the horizontal adjustment amount is Δx = 0.5 * (x L + x R ) and the vertical adjustment amount is Δy = 0.5 * (y T + y B ).

[0108] Step S312: Determine whether the eye point positions in the horizontal and vertical directions have both been adjusted and whether the adjustment amount in the current movement direction is less than the preset minimum value. If so, execute Step S318; if not, execute Step S314.

[0109] Step S314: Adjust the optical axis of the optical measurement device to be parallel to the optical axis of the near-eye display device to be measured.

[0110] Step S316: Determine whether the number of detections is greater than the preset maximum value. If so, execute Step S318; if not, switch the detection direction and execute Step S306.

[0111] When the number of detections is less than the preset maximum value, switch the preset maximum value. That is, when the current detection direction is the vertical direction, switch the detection direction to the horizontal direction; when the current detection direction is the horizontal direction, switch the detection direction to the vertical direction.

[0112] Step S318: Output the position of the current eye point to complete the eye point position detection.

[0113] It should be noted that the steps shown in the above process or the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0114] Figure 3 This is a near-eye display detection device according to this embodiment. As Figure 3 shown, this near-eye display detection device includes an optical measurement device 2, a motion platform 3, and a control device 4. The optical measurement device 2 is used to collect images displayed by the near-eye display device to be measured. The optical measurement device 2 is mounted on the motion platform. The control device 4 is used to control the optical measurement device 2 and the motion platform 3. The control device 4 includes a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to execute the near-eye display performance detection method in the foregoing embodiment.

[0115] In this embodiment, a near-eye display performance detection device is also provided. This device includes

[0116] A first determination module, configured to determine near-eye display performance detection items to be detected, and determine a detection quantity, a detection direction, and a detection threshold according to the near-eye display performance detection items;

[0117] A second determination module, configured to determine the value of the detection quantity according to an image displayed by a near-eye display device to be detected collected by an optical measurement device at a current position;

[0118] A parameter update module, configured to update position adjustment parameters of the optical measurement device according to the value of the detection quantity, the detection direction, and the detection threshold; the position adjustment parameters of the optical measurement device include a movement direction of the optical measurement device and a movement step length of the optical measurement device;

[0119] A position adjustment module, configured to adjust the position of the optical measurement device to a target position according to the updated position adjustment parameters; the value of the detection quantity determined at the target position is within the detection threshold range or the movement step length is a preset minimum value;

[0120] A first calculation module, configured to calculate the movement quantity of the optical measurement device when the optical measurement device moves from an initial position to the target position;

[0121] A second calculation module, configured to calculate the value of the near-eye display performance detection item according to the movement quantity of the optical measurement device, and complete the near-eye display performance detection.

[0122] It should be noted that the above-mentioned each module can be a functional module or a program module, and can be implemented by software or by hardware. For the modules implemented by hardware, the above-mentioned each module can be located in the same processor; or the above-mentioned each module can also be located in different processors in any combination form.

[0123] In this embodiment, an electronic device is further provided, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0124] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation manners, and will not be repeated in this embodiment.

[0125] In addition, in combination with the method provided in the above embodiments, a storage medium can also be provided in this embodiment to implement. A computer program is stored on the storage medium; when the computer program is executed by a processor, the steps of any one of the above methods are implemented.

[0126] It should be understood that the specific embodiments described herein are for explaining this application rather than limiting it. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in this application without creative efforts fall within the protection scope of this application.

[0127] Obviously, the accompanying drawings are only some examples or embodiments of this application. For those of ordinary skill in the art, this application can also be applied to other similar situations based on these drawings without creative efforts. Additionally, it can be understood that although the work done during the development here may be complex and time-consuming, for those of ordinary skill in the art, certain design, manufacturing, or production changes based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient disclosure of this application.

[0128] The term "embodiment" in this application means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The phrase appears in various positions in the specification and does not necessarily mean the same embodiment, nor does it mean being independent or alternative to other embodiments and mutually exclusive. Those of ordinary skill in the art can clearly or implicitly understand that the embodiments described in this application can be combined with other embodiments without conflict.

[0129] The above-described embodiments only represent several implementation manners of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of patent protection. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be subject to the appended claims.

Claims

1. A method for detecting near-eye display performance, characterized in that, the method is used for a near-eye display detection device, the near-eye display detection device includes an optical measurement device, and the method includes, determining a near-eye display performance detection item to be detected; determining a detection quantity, a detection direction, a detection threshold, and a movement step size of the optical measurement device according to the near-eye display performance detection item; determining the value of the detection quantity according to the image displayed by the near-eye display device to be detected collected at the current position of the optical measurement device; updating the position adjustment parameter of the optical measurement device or determining the current position as the target position according to the value of the detection quantity, the detection direction, and the detection threshold; the position adjustment parameter of the optical measurement device includes the movement direction of the optical measurement device and the movement step size of the optical measurement device; adjusting the position of the optical measurement device to the target position according to the updated position adjustment parameter; at the target position, the value of the detection quantity is within the detection threshold range or the movement step size is a preset minimum value; calculating the movement amount of the optical measurement device when the optical measurement device moves from the initial position to the target position; calculating the value of the near-eye display performance detection item according to the movement amount of the optical measurement device, and completing the detection of the near-eye display performance.

2. The near-eye display performance detection method according to claim 1, characterized in that, the updating the position adjustment parameter of the optical measurement device according to the value of the detection quantity, the detection direction, and the detection threshold includes, when the value of the detection quantity exceeds the upper limit of the detection threshold range, determining whether the current movement direction of the optical measurement device is consistent with the detection direction; if it is consistent, setting the movement direction of the next step of the optical measurement device as the current detection direction; if it is not consistent, when the current movement step size of the optical measurement device is not the preset minimum value, setting the movement direction of the next step of the optical measurement device as the current detection direction, and reducing the movement step size of the next step of the optical measurement device.

3. The near-eye display performance detection method according to claim 1, characterized in that, the updating the position adjustment parameter of the optical measurement device according to the value of the detection quantity, the detection direction, and the detection threshold includes, when the value of the detection quantity is less than the lower limit of the detection threshold range, determining whether the current movement direction of the optical measurement device is consistent with the detection direction; if it is consistent, setting the movement direction of the next step of the optical measurement device as the opposite direction of the current detection direction; if it is not consistent, when the current movement step size of the optical measurement device is not the preset minimum value, setting the movement direction of the next step of the optical measurement device as the opposite direction of the current detection direction, and reducing the movement step size of the next step of the optical measurement device.

4. The near-eye display performance detection method according to claim 1, characterized in that, the movement amount of the optical measurement device includes the distance moved and / or the angle rotated by the optical measurement device from the initial position to the target position.

5. The near-eye display performance detection method according to any one of claims 1-4, characterized in that, the near-eye display performance detection item to be detected is a field of view angle detection, the detection quantity is the image brightness or image clarity of the detection point, and the detection point is the center point of the image collected by the optical measurement device.

6. The near-eye display performance detection method according to any one of claims 1-4, characterized in that, the near-eye display performance detection item to be detected is a field of view angle detection, and the detection quantity is the Euclidean distance from the boundary or corner point of the collected image to the center of the image.

7. The near-eye display performance detection method according to any one of claims 1-4, characterized in that, the near-eye display performance detection item to be detected is an eyebox detection, the detection quantity is the image brightness or image clarity of the detection point, and the detection point is the center point of the image collected by the optical measurement device.

8. The near-eye display performance detection method according to any one of claims 1-4, characterized in that, the near-eye display performance detection item to be detected is an eye point detection, the detection quantity is the image brightness or image clarity of the detection point, and the detection point is the center point of the image collected by the optical measurement device; when calculating the movement quantity of the optical measurement device from the initial position to the target position, the movement quantity of the optical measurement device further includes obtaining the edge coordinates of the eyebox on both sides of the eye point according to the movement quantity of the optical measurement device from the initial position to the target position; determining the position adjustment quantity of the eye point according to the edge coordinates; adjusting the position of the eye point according to the position adjustment quantity; when the position adjustment quantity is less than a preset value, outputting the current position of the eye point to complete the eye point position detection.

9. A near-eye display performance detection device, characterized in that, the device includes, a first determination module, configured to determine a near-eye display performance detection item to be detected, and determine a detection quantity, a detection direction, a detection threshold, and a movement step length of the optical measurement device according to the near-eye display performance detection item; a second determination module, configured to determine the value of the detection quantity according to the image displayed by the near-eye display device to be detected collected by the optical measurement device at the current position; a parameter update module, configured to update the position adjustment parameter of the optical measurement device or determine the current position as the target position according to the value of the detection quantity, the detection direction, and the detection threshold; the position adjustment parameter of the optical measurement device includes the movement direction of the optical measurement device and the movement step length of the optical measurement device; a position adjustment module, configured to adjust the position of the optical measurement device to the target position according to the updated position adjustment parameter; the value of the detection quantity at the target position is within the detection threshold range or the movement step length is a preset minimum value; a first calculation module, configured to calculate the movement quantity of the optical measurement device from the initial position to the target position; a second calculation module, configured to calculate the value of the near-eye display performance detection item according to the movement quantity of the optical measurement device to complete the near-eye display performance detection.

10. A near-eye display detection device, characterized in that, the device includes an optical measurement device, a motion platform, and a control device. The optical measurement device is used to collect images displayed by the near-eye display device to be detected. The optical measurement device is mounted on the motion platform. The control device is used to control the optical measurement device and the motion platform. The control device includes a memory and a processor. A computer program is stored in the memory. The processor is configured to run the computer program to execute the near-eye display performance detection method according to any one of claims 1 to 8.

11. An electronic device, including a memory and a processor, characterized in that, a computer program is stored in the memory. The processor is configured to run the computer program to execute the near-eye display performance detection method according to any one of claims 1 to 8.

12. A computer-readable storage medium, on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the steps of the near-eye display performance detection method according to any one of claims 1 to 8 are implemented.

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