TWI691827B - Image quality detecting device - Google Patents

Abstract

An image quality device is configured to detect quality of an image displayed by a head mounted device. The image quality device includes an image-capturing bracket, a base and a display bracket. The image-capturing bracket includes a plurality of image-capturing modules, a first image-capturing pivot mechanism and a second image-capturing pivot mechanism. The first image-capturing pivot mechanism is coupled to the image-capturing modules for the image-capturing modules to rotate about a first axis. The second image-capturing pivot mechanism is coupled to the image-capturing modules for the image-capturing modules to rotate about a second axis. The base includes a sliding rail extending along a third direction. The image-capturing bracket is disposed on the base to slide along the third axis. The display bracket is disposed on the base for holding the head mounted device. The head mounted device is configured to move relatively to the image-capturing bracket through the display bracket.

Description

Image quality detection device

The invention relates to a detection device, and in particular to an image quality detection device.

Head Mount Display (HMD) is an optical visualization device that uses the positioning of display elements to display virtual images in front of the user's eyes. This kind of device is widely used in the field of virtual reality (Virtual Reality; VR) technology. In addition to being standard equipment for virtual reality, head-mounted display devices can also be used to replace computer or TV display devices. For example, using a laptop computer in a public place and do not want to be watched by others is a solution. On the other hand, many mobile sex workers, such as researchers in the laboratory, must use a head-mounted display device to complete their work. Furthermore, in addition to the two-eye head-mounted display device, the single-eye head-mounted display device can also assist the wearer to browse the image content on the screen with one eye and handle the affairs around him with the other eye. However, the prior art uses the human eye to judge the degree of binocular image combination displayed by the binocular head-mounted display device or to determine the degree of monocular image positioning of the mono-eye head-mounted display device, which may cause a drop in the detection result due to many human factors and cannot be achieved. Quantify the difference in the degree of binocular image integration or the degree of monocular image positioning. Therefore, the prior art cannot effectively and accurately determine whether the head-mounted display device under test needs to be adjusted or corrected again.

The invention provides an image quality detection device, which can simulate the condition of different users using the head-mounted display device to detect the image quality displayed by the head-mounted display device.

In an embodiment of the invention, an image detection device is suitable for detecting the quality of an image displayed by a head-mounted display device. The image detection device includes a camera bracket, a base and a display bracket. The camera bracket includes a camera module, a first camera pivot mechanism, and a second camera pivot member, wherein the first camera pivot member is coupled to the camera module so that the camera module is adapted to rotate along a first axis The second camera pivoting member is coupled to the camera module so that the camera module is adapted to rotate along a second axis. The base includes a slide rail extending along a third axis, wherein the camera bracket is disposed on the slide rail to slide along the third axis. The display bracket is disposed on the base and clamps the head-mounted display device, wherein the head-mounted display device is adapted to move relative to the camera bracket through the display bracket.

Based on the above, the image detection device of the embodiment of the present invention includes a camera holder for clamping the camera module, a base, and a display holder for clamping the head-mounted display device. Through the configuration of the camera bracket and the display bracket, the camera module can face the display surface of the head-mounted display device to capture the image displayed by the head-mounted display device and detect its image quality. Moreover, the camera module is adapted to move relative to the display stand through the camera stand to simulate the angle of movement of the human eye. The head-mounted display device is also suitable for moving relative to the camera stand through the display stand to adjust the position of the head-mounted display device. So configured, the image detection device of the embodiment of the present invention uses a freely movable camera module to simulate the situation of different users using the head-mounted display device, record the image seen by the user, and then analyze and adjust the image , So that different users can feel the same image quality when watching the same image.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the drawings. Directional terms mentioned in the following embodiments, for example: "upper", "lower", "front", "rear", "left", "right", etc., are only for the directions referring to the attached drawings. Therefore, the directional terms used are for illustration, not for limiting the present invention. Moreover, in the following embodiments, the same or similar elements will use the same or similar reference numerals.

FIG. 1 is a schematic diagram of an image detection device according to an embodiment of the invention. Please refer to FIG. 1. In this embodiment, the image detection device 100 is suitable for detecting the quality of the image displayed by a head-mounted display device 200. In some embodiments, the head-mounted display device 200 may be, for example, a virtual reality (Virtual Reality, VR) display device, which can be applied with virtual reality technology and can be worn by a user, but the present invention does not Not limited to this. In some embodiments, the head-mounted display device 200 may include a head-mounted bracket and at least one optical system attached to the head-mounted bracket. The optical system may include a display panel and an image former. The display panel is configured to generate a light pattern. The image former is configured to form a virtual image from the light pattern.

In some embodiments, the image detection device 100 includes a camera support 110, a base 130, and a display support 120 for holding the head mounted display device 200. The camera support 110 is used to hold a camera module 112 which can face a display surface of the head-mounted display device 200 to capture the image displayed by the head-mounted display device 200 and detect the image quality. Moreover, the camera module 112 is adapted to move relative to the display holder 120 through the camera holder 110 to simulate the angle of movement of the human eye. When the camera module 112 captures the image frame displayed by the head-mounted display device 200, the image quality information of the image frame displayed by the head-mounted display device 200 can be obtained through image analysis, thereby helping the R&D personnel Adjust the display image quality of the display panel of the head-mounted display device 200 or the quality of the imaging lens of the head-mounted display device 200.

2 is a schematic partial cross-sectional view of an imaging bracket of an image detection device according to an embodiment of the invention. Please refer to FIGS. 1 and 2 at the same time. In some embodiments, the camera bracket 110 may include a camera module 112, a first camera pivoting member 114, and a second camera pivoting member 116. The first camera pivoting member 114 can be coupled to the camera module 112 as shown in FIG. 2, so that the camera module 112 is adapted to rotate along a first axis A1 (eg, X axis). In this embodiment, the first camera pivoting member 114 may include a pivot axis, and the user may manually rotate the pivot axis to control the degree and angle of rotation of the camera module 112 along the first axis A1. Of course, in other embodiments, the first camera pivot 114 may include a driving motor coupled to the pivot axis of the first camera pivot 114 to automatically drive the camera module 112 to rotate along the first axis A1, It can be coupled to a controller to control the degree and angle of rotation. In this embodiment, the maximum rotation angle of the drive motor is approximately plus or minus 30 degrees, and the average rotation speed of the drive motor is approximately 100∘/S. In this configuration, the camera module 112 can rotate along the first axis A1 through the first camera pivot 114 to simulate the vertical rotation of the human eye. In this embodiment, the first axis A1 may be, for example, parallel to the display surface of the head-mounted display device 200 and the upper surface of the base 130.

In some embodiments, the second camera pivoting member 116 is coupled to the camera module 112 so that the camera module 112 is adapted to rotate along a second axis A2 (eg, Y axis). In this embodiment, the second camera pivoting member 116 may include a driving motor coupled to the pivot axis of the first camera pivoting member 116 to automatically drive the camera module 112 to rotate along the first axis A1, and It is coupled to the controller to control the degree and angle of its rotation. In this embodiment, the maximum rotation angle of the drive motor is approximately plus or minus 30 degrees, and the average rotation speed of the drive motor is approximately 100∘/S. In this configuration, the camera module 112 can rotate along the second axis A2 through the second camera pivot 116 to simulate the horizontal rotation of the human eye. In this embodiment, the second axis A2 may be, for example, parallel to the display surface of the head-mounted display device 200 and perpendicular to the upper surface of the base 130.

In some embodiments, the head-mounted display device 200 may be a two-eye head-mounted display device, which can display images of both eyes. In this embodiment, the camera module 112 may include a plurality of (two) camera lenses 1121 to respectively capture the images of the two eyes displayed by the two-eye head-mounted display device. In detail, the first camera pivoting member 116 may include a plurality of (two) first pivot shafts 1141 respectively coupled to the camera lens 1121 to respectively rotate the camera lens 1121 along the first axis A1. Correspondingly, the second camera pivoting member 116 includes a plurality of (two) second pivot shafts 1161, which are respectively coupled to the two camera lenses 1121, so as to respectively rotate the camera lens 1121 along the second axis A2. In some embodiments, the plurality of first pivot shafts 1141 may be linked to each other to jointly control the rotation of the camera lens 1121 along the first axis A1 through a single driving motor. Similarly, the plurality of second pivot shafts 1161 can be linked to each other to jointly control the rotation of the camera lens 1121 along the second axis A2 through a single driving motor. Of course, in other embodiments, the first pivot axis 1141 and the second pivot axis 1161 can also be independently controlled to individually control the rotation of the plurality of camera lenses 1121.

FIG. 3 is a schematic partial side view of an imaging bracket of an image detection device according to an embodiment of the invention. Please refer to FIGS. 1 and 3. In some embodiments, the camera bracket 110 may further include a first camera driver 117, which is disposed on the base 130 and coupled to the camera module 112, so that the camera module 112 It is suitable for displacement along the first axis A1. For example, the first camera driving member 117 may include a driving motor 1171, a rack module 1172, and a slide rail 1173. In this embodiment, the number of driving motors 1171 may correspond to the number of imaging lenses 1121, that is, in an embodiment with multiple imaging lenses 1121, the first imaging driving member 117 may have multiple driving motors 1171, To couple the plurality of camera lenses 1121 respectively. In this embodiment, the center distance between the two driving motors 1171 is approximately 55 mm to 72 mm. The maximum rotation angle of the drive motor 1171 is approximately plus or minus 30 degrees, and the average rotation speed of the drive motor 1171 is approximately 100∘/S.

In some embodiments, the driving motor 1171 is coupled to a pivot shaft 1174 to drive the pivot shaft 1174 to rotate along the third axis A3. The rack module 1172 is coupled to the pivot shaft 1174 to convert the rotation amount of the pivot shaft 1174 along the third axis A3 into the horizontal displacement amount of the first axis A1. The rack module 1172 is coupled to the camera module 112 (shown in FIG. 3 as being coupled to the camera module 112 via the second camera pivot 116, but not limited to this), to drive the camera module 112 along the first One axis A1 is horizontally displaced. The slide rail 1173 extends along the first axis A1 to help drive the camera module 112 to move along the first axis A1. With this configuration, the distance between the camera lenses 1121 of the camera module 112 can be freely adjusted through the first camera driver 117 to simulate the eye distance of different human eyes.

In some embodiments, the base 130 may include a sliding rail 132 extending along a third axis A3 (eg, Z axis). The camera bracket 110 is disposed on the slide rail 132 to slide along the third axis A3 relative to the base 130 and the display bracket 120. In this embodiment, the camera bracket 110 may further include a third camera driver 118 and a drive motor 1181. The third camera driver 118 is disposed on the slide rail 132 and may be driven by the drive motor 1181 to make the camera bracket 110 is displaced along the third axis A3. In this embodiment, the third camera driver 118 may include an electric cylinder. The display bracket 120 is disposed on the base 130 and includes a clamping member 121 for clamping the head-mounted display device 200 to adjust the position of the head-mounted display device 200 to a predetermined position. In this configuration, the camera mount 110 is configured to slide along the slide rail 132 to approach or move away from the display surface of the head-mounted display device 200. In other words, the camera module 112 is adapted to slide relative to the head-mounted display device 200 along the third axis A3 through the structure of the camera bracket 110 and the slide rail 132 to adjust the focal length of the camera module 112. In this embodiment, the third axis A3 may be, for example, perpendicular to the display surface of the head-mounted display device 200, and the first axis A1, the second axis A2, and the third axis A3 are perpendicular to each other.

4 is a schematic cross-sectional view of a display stand of an image detection device according to an embodiment of the invention. Please refer to FIGS. 1 and 4 simultaneously. In some embodiments, the head-mounted display device 200 is adapted to move relative to the camera support 110 through the display support 120. For example, the display bracket 120 may include a first display pivot member 122, a second display pivot member 124, and a third display pivot member 126. The third display pivoting member 126 is coupled to the clamping member 121 for clamping the head-mounted display device 200 so that the head-mounted display device 200 is adapted to rotate along the third axis A3. The first display pivoting member 122 may be coupled to the head-mounted display device 200 via, for example, the third display pivoting member 126, so that the head-mounted display device 200 is adapted to rotate along the first axis A1. The second display pivoting member 124 may be coupled to the first display pivoting member 122, and then coupled to the head-mounted display device 200 via the third display pivoting member 126, so that the head-mounted display device 200 is adapted to The second axis A2 rotates.

Of course, the above configuration is only for illustration, and the present invention does not limit the first display pivot 122, the second display pivot 124, and the third display pivot 126 to the head-mounted display device 200, respectively. As long as all three are coupled to the head-mounted display device 200, so that the head-mounted display device 200 is suitable for rotating along the first axis A1, the second axis A2, and the third axis A3 . In this embodiment, the first display pivot member 122, the second display pivot member 124, and the third display pivot member 126 may be respectively coupled to corresponding driving motors to respectively drive and control the head-mounted display device 200 Rotation in three axes.

In some embodiments, the display bracket 120 may further include a first display driving member 128, a second display driving member 129, and a third display driving member 127. The third display driving member 127 is disposed on the base 130 and may include a slide rail to drive the display bracket 120 to horizontally move along the first axis A2 (for example, toward or away from the camera bracket 110), so that Accordingly, the focal length between the head-mounted display device 200 and the camera module 112 is adjusted. The first display driving member 128 is disposed on the base 130 (for example, the third display driving member 127) and is coupled to the wearable display device 200 to drive the display bracket 120 to horizontally move along the first axis A1, so that Accordingly, the horizontal horizontal distance between the head-mounted display device 200 and the camera module 112 is adjusted. In this embodiment, the first display driving member 128 may further include a slide rail 1281, the extending direction of which may be perpendicular to the extending direction of the slide rail of the third display driving member 127, to help drive the display bracket 120 along the first axis A1 displacement. The second display driver 129 is disposed on the base 130 (for example, the first display driver 128) and is coupled to the wearable display device 200 to drive the display bracket 120 to perform vertical displacement along the second axis A2. Accordingly, the height of the head-mounted display device 200 is adjusted. In this embodiment, the first display driving member 128, the second display driving member 129, and the third display driving member 127 may include electric cylinders, but the present invention is not limited thereto.

In summary, the image detection device of the embodiment of the present invention includes a camera holder for clamping the camera module, a base, and a display holder for clamping the head-mounted display device. Through the configuration of the camera bracket and the display bracket, the camera module can face the display surface of the head-mounted display device to capture the image displayed by the head-mounted display device and detect its image quality. Moreover, the camera module is adapted to move relative to the display stand through the camera stand to simulate the angle of movement of the human eye. The head-mounted display device is also suitable for moving relative to the camera stand through the display stand to adjust the position of the head-mounted display device.

In this way, when the camera module captures the image frame displayed by the head-mounted display device, the image quality information of the image frame displayed by the head-mounted display device can be obtained through image analysis, which can help the R&D personnel to adjust The display image quality of the display panel of the head mounted display device or the quality of the imaging lens of the head mounted display device. Therefore, the image detection device of the embodiment of the present invention uses a freely movable camera module to simulate the situation of different users using the head-mounted display device, records the image seen by the user, and then analyzes and adjusts the image.

Moreover, in some embodiments, the image detection device of the embodiment of the present invention may utilize multiple camera modules to capture the depth information of the image displayed by the head-mounted display device, according to different users simulated by the camera stand Human eye conditions to adjust the depth information required by the image, so that different users can feel the same image depth (depth of field) when viewing the same image.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

100: image detection device 110: camera stand 112: camera module 1121: Camera lens 114: The first camera pivot 1141: The first pivot axis 116: Second camera pivot 1161: Second pivot axis 117: The first camera driver 1171: Drive motor 1172: Rack module 1173: Slide rail 1174: pivot axis 118: Third camera driver 1181: Drive motor 120: Display stand 121: clamping piece 122: The first display pivot 124: second display pivot 126: Third display pivot 127: Third display driver 128: the first display driver 1281: Slide rail 129: Second display driver 130: Dock 132: Slide rail 200: Head-mounted display device A1: First axis A2: Second axis A3: Third axis

FIG. 1 is a schematic diagram of an image detection device according to an embodiment of the invention. 2 is a schematic partial cross-sectional view of an imaging bracket of an image detection device according to an embodiment of the invention. FIG. 3 is a schematic partial side view of an imaging bracket of an image detection device according to an embodiment of the invention. 4 is a schematic cross-sectional view of a display stand of an image detection device according to an embodiment of the invention.

100: image detection device

110: camera stand

112: camera module

1121: Camera lens

116: Second camera pivot

117: The first camera driver

118: Third camera driver

1181: Drive motor

120: Display stand

121: clamping piece

122: The first display pivot

124: second display pivot

126: Third display pivot

128: the first display driver

129: Second display driver

130: Dock

132: Slide rail

200: Head-mounted display device

A1: First axis

A2: Second axis

A3: Third axis

Claims (10)

An image detection device suitable for detecting the quality of an image displayed by a head-mounted display device includes: A camera bracket, including a camera module, a first camera pivoting member and a second camera pivoting member, wherein the first camera pivoting member is coupled to the camera module to make the camera module suitable for The first axis rotates, and the second camera pivoting member is coupled to the camera module so that the camera module is adapted to rotate along a second axis; A base including a slide rail extending along a third axis, wherein the camera bracket is disposed on the slide rail to slide along the third axis; and A display bracket is disposed on the base and clamps the head-mounted display device, wherein the head-mounted display device is adapted to move relative to the camera bracket through the display bracket. The image detection device according to item 1 of the patent application scope, wherein the first axis, the second axis, and the third axis are perpendicular to each other. The image detection device according to item 1 of the patent application scope, wherein the camera bracket slides along the slide rail to approach or move away from a display surface of the head-mounted display device. The image detection device according to item 1 of the patent application scope, wherein the camera module includes a plurality of camera lenses, and the first camera pivot member includes a plurality of first pivot shafts, which are respectively coupled to the camera lenses, Respectively rotating the camera lenses along the first axis, and the second camera pivoting member includes a plurality of second pivot shafts, which are respectively coupled to the camera lenses, so that the camera lenses are respectively along the second axis To rotate. The image detection device as described in item 1 of the patent application scope, wherein the camera bracket further includes a first camera driving member disposed on the base and coupled to the camera module, so that the camera module is suitable for This first axial displacement. The image detection device as described in item 1 of the patent application range, wherein the display bracket further includes a first display pivoting member coupled to the head-mounted display device so that the head-mounted display device is adapted to be along the first Axial rotation. The image detection device as described in item 1 of the patent application range, wherein the display bracket further includes a second display pivoting member, coupled to the head-mounted display device so that the head-mounted display device is adapted to be along the second Axial rotation. The image detection device as described in item 1 of the patent application range, wherein the display bracket further includes a third display pivoting member coupled to the head-mounted display device so that the head-mounted display device is adapted to be along the third Axial rotation. The image detection device as described in item 1 of the patent application range, wherein the display bracket further includes a first display driving member, which is disposed on the base and coupled to the head-mounted display device to enable the head-mounted display The device is adapted to be displaced along this first axis. The image detection device as described in item 1 of the patent application scope, wherein the display bracket further includes a second display driving member, which is disposed on the base and coupled to the head-mounted display device to enable the head-mounted display The device is adapted to be displaced along this second axis.

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