Abstract: Methods, apparatuses, and systems for determining a concentration of a target gas in a sample gas. An example method of preparing a replaceable testing material for detecting a target gas in a sample gas may include preparing a solution comprising a solute and a solvent, wherein the solute comprises o-tolidine; introducing a testing material substrate to the prepared solution for a period of time; and removing at least a portion of the solvent from the testing material substrate such that the testing material substrate comprises at least a portion of the o-tolidine, and thereby forming the replaceable testing material for detecting the target gas in the sample gas.

Abstract: A text input method and apparatus, and a non-transitory computer readable storage medium are provided. In the text input method, in response to determining that a head-mounted display device is triggered for text input, the head-mounted display device displays a text input control in a target picture displayed by the head-mounted display device. The text input control may include a plurality of first child controls that correspond to characters, and each first child control displays corresponding characters respectively. Furthermore, in response to determining that a target first child control among the plurality of first child controls is triggered, the head-mounted display device determines target characters corresponding to the target first child control, determines a text to be inputted based on the target characters, and inputs the text to be inputted into a text input box displayed on the target picture.

Abstract: A text input method and apparatus, and a non-transitory computer readable storage medium are provided. In the text input method, in response to determining that a head-mounted display device is triggered for text input, the head-mounted display device displays a text input control in a target picture displayed by the head-mounted display device. The text input control may include a plurality of first child controls that correspond to characters, and each first child control displays corresponding characters respectively. Furthermore, in response to determining that a target first child control among the plurality of first child controls is triggered, the head-mounted display device determines target characters corresponding to the target first child control, determines a text to be inputted based on the target characters, and inputs the text to be inputted into a text input box displayed on the target picture.

Abstract: An information interaction method is applied to a mobile terminal and includes displaying at least one touch area configured to control a moving speed of a cursor on a touch screen of the mobile terminal, in response to detecting an operation on the mobile terminal; and sending a first control instruction to a wearable device in response to detecting a touch operation in any touch area, the first control instruction being configured to instruct the cursor on a display interface of the wearable device to move according to the moving speed indicated by the touch area.

Abstract: A translation method is performed by an augmented reality (AR) device. The method includes obtaining a text to be translated from an environment image in response to a translation trigger instruction; obtaining a translation result of the text to be translated; and displaying the translation result based on a preset display mode in an AR space. The AR space is a virtual space constructed by the AR device based on a real environment.

Abstract: Embodiments of this application relate to a virtual reality display device. The virtual reality display device includes a left lens barrel and a right lens barrel; the left lens barrel includes: a left lens barrel housing, a left display screen, and a left lens; the right lens barrel includes: a right lens barrel housing, a right display screen, and a right lens; an inner side of an opening portion of the left lens barrel housing includes a left lens holder; an inner side of an opening portion of the right lens barrel housing includes a right lens holder; a left fill layer is provided between the left lens holder and the left lens; and a right fill layer is provided between the right lens holder and the right lens.

Abstract: A translation method is performed by an augmented reality (AR) device. The method includes obtaining a text to be translated from an environment image in response to a translation trigger instruction; obtaining a translation result of the text to be translated; and displaying the translation result based on a preset display mode in an AR space. The AR space is a virtual space constructed by the AR device based on a real environment.

Abstract: Embodiments of this application relate to a virtual reality display device. The virtual reality display device includes a left lens barrel and a right lens barrel; the left lens barrel includes: a left lens barrel housing, a left display screen, and a left lens; the right lens barrel includes: a right lens barrel housing, a right display screen, and a right lens; an inner side of an opening portion of the left lens barrel housing includes a left lens holder; an inner side of an opening portion of the right lens barrel housing includes a right lens holder; a left fill layer is provided between the left lens holder and the left lens; and a right fill layer is provided between the right lens holder and the right lens.

Abstract: Embodiments of this application disclose a display including a display screen, a liquid crystal lens layer, and a control module. The display screen comprises a plurality of pixel groups, each of which includes at least one pixel. The liquid crystal lens layer comprises a plurality of liquid crystal lens units, each pixel group being correspondingly disposed with a liquid crystal lens unit. The control module is configured to obtain virtual display depth information of to-be-displayed content of each pixel group. The control module is configured to control, when displaying the to-be-displayed content on a pixel group and according to the virtual display depth information, an electric field applied to a liquid crystal lens unit corresponding to the pixel group, to change a refractive index of the corresponding liquid crystal lens unit, and is configured to adjust a first virtual image of the content displayed by the pixel group.

Abstract: Embodiments of this application relate to a virtual reality display device. The virtual reality display device includes a left lens barrel and a right lens barrel; the left lens barrel includes: a left lens barrel housing, a left display screen, and a left lens; the right lens barrel includes: a right lens barrel housing, a right display screen, and a right lens; an inner side of an opening portion of the left lens barrel housing includes a left lens holder; an inner side of an opening portion of the right lens barrel housing includes a right lens holder; a left fill layer is provided between the left lens holder and the left lens; and a right fill layer is provided between the right lens holder and the right lens.

Abstract: This application discloses virtual reality (VR) glasses, and a lens barrel adjustment method and apparatus, and relates to the field of VR technologies. The VR glasses includes a glasses body and two lens barrels that are symmetrically disposed within the glasses body. Each of the two lens barrels includes a lens barrel body and a lens barrel kit. The lens barrel kit is provided with a first adjustment component. The lens barrel body is provided with a second adjustment component. The lens barrel kit and the lens barrel body are configured to perform relative movement through coordination of the first adjustment component and the second adjustment component.

Abstract: The various embodiments described herein include an information processing method performed by a wearable electronic device. The wearable electronic device obtains a first initial media file and a second initial media file for a target area. The first initial media file includes a first image acquired based on a first location of the target area. The second initial media file includes a second image acquired based on a second location of the target area. Based on the initial files, the wearable electronic device determines depth information of each target point in the target area. Next, the wearable electronic device selects a first media file from the first and second initial media files, and calculates a second media file. The wearable electronic device then outputs the first and second media files to, respectively, a first output unit and a second output unit of the wearable electronic device.

Abstract: A method is provided for displaying an image based on a virtual reality (VR) apparatus. The method includes acquiring an image of raw-shooting-material and acquiring a shooting field-of-view (FOV) of the image of raw-shooting-material. The method also includes setting a scene FOV of a virtual scene of the VR apparatus according to the shooting FOV, and performing scene image generation and adaption to generate a scene image according to the image of raw-shooting-material and the scene FOV and to determine a size of the scene image according to the scene FOV. Further, the method includes determining a display area of the scene image by using a gyroscope sensor, and displaying the display area on a display screen of the VR apparatus.

Abstract: The present disclosure relates to an image display method performed by a head-mounted display device. The device establishes a rectangular projection plane model that shares a same aspect ratio with a picture shot by a lens and then transforms the rectangular projection plane model into a shaped projection plane model through anti-distortion processing. Next, the device defines a shaped cambered spherical model by intersecting the shaped projection plane model with a spherical model according to a horizontal field angle and a vertical field angle of the lens and then projects an original distorted image onto the shaped cambered spherical model to remove image distortion. Finally, the device displays the image rendered on the shaped cambered spherical model.

Abstract: Embodiments of this application disclose a display including a display screen, a liquid crystal lens layer, and a control module. The display screen comprises a plurality of pixel groups, each of which includes at least one pixel. The liquid crystal lens layer comprises a plurality of liquid crystal lens units, each pixel group being correspondingly disposed with a liquid crystal lens unit. The control module is configured to obtain virtual display depth information of to-be-displayed content of each pixel group. The control module is configured to control, when displaying the to-be-displayed content on a pixel group and according to the virtual display depth information, an electric field applied to a liquid crystal lens unit corresponding to the pixel group, to change a refractive index of the corresponding liquid crystal lens unit, and is configured to adjust a first virtual image of the content displayed by the pixel group.

Abstract: This application discloses virtual reality (VR) glasses, and a lens barrel adjustment method and apparatus, and relates to the field of VR technologies. The VR glasses includes a glasses body and two lens barrels that are symmetrically disposed within the glasses body. Each of the two lens barrels includes a lens barrel body and a lens barrel kit. The lens barrel kit is provided with a first adjustment component. The lens barrel body is provided with a second adjustment component. The lens barrel kit and the lens barrel body are configured to perform relative movement through coordination of the first adjustment component and the second adjustment component.

Abstract: The various embodiments described herein include an information processing method performed by a wearable electronic device. The wearable electronic device obtains a first initial media file and a second initial media file for a target area. The first initial media file includes a first image acquired based on a first location of the target area. The second initial media file includes a second image acquired based on a second location of the target area. Based on the initial files, the wearable electronic device determines depth information of each target point in the target area. Next, the wearable electronic device selects a first media file from the first and second initial media files, and calculates a second media file. The wearable electronic device then outputs the first and second media files to, respectively, a first output unit and a second output unit of the wearable electronic device.

Abstract: A method is provided for displaying an image based on a virtual reality (VR) apparatus. The method includes acquiring an image of raw-shooting-material and acquiring a shooting field-of-view (FOV) of the image of raw-shooting-material. The method also includes setting a scene FOV of a virtual scene of the VR apparatus according to the shooting FOV, and performing scene image generation and adaption to generate a scene image according to the image of raw-shooting-material and the scene FOV and to determine a size of the scene image according to the scene FOV. Further, the method includes determining a display area of the scene image by using a gyroscope sensor, and displaying the display area on a display screen of the VR apparatus.

Abstract: The present disclosure relates to an image display method performed by a head-mounted display device. The device establishes a rectangular projection plane model that shares a same aspect ratio with a picture shot by a lens and then transforms the rectangular projection plane model into a shaped projection plane model through anti-distortion processing. Next, the device defines a shaped cambered spherical model by intersecting the shaped projection plane model with a spherical model according to a horizontal field angle and a vertical field angle of the lens and then projects an original distorted image onto the shaped cambered spherical model to remove image distortion. Finally, the device displays the image rendered on the shaped cambered spherical model.