TWI891340B - Displaying method for three-dimensional virtual object, display device and notebook computer using the same - Google Patents

Abstract

A displaying method for a three-dimensional virtual object, a display device and a notebook computer using the same are provided. The displaying method for the three-dimensional virtual object includes the following steps. A gravity direction of the display unit is detected. A rotation angle of the display unit is analyzed according to a change of the gravity direction. A coordinate system of the display unit is corrected according to the rotation angle. The display unit displays a three-dimensional virtual object according to the corrected coordinate system.

Description

Three-dimensional virtual object display method, display device, and notebook computer using the same

This disclosure relates to a display method and an electronic device using the same, and more particularly to a display method for three-dimensional virtual objects, a display device, and a notebook computer using the same.

In recent years, consumers' desire for 3D images has increased, and 3D products have continued to emerge. With laptops now nearly universally available, consumers also want to enjoy the visual experience of 3D images while using their laptops.

This disclosure relates to a method for displaying three-dimensional virtual objects, a display device, and a notebook computer utilizing the same. When the display device is flipped, the coordinate system is transformed to change the different aspects of the three-dimensional virtual object, thereby presenting a three-dimensional visual experience.

According to one aspect of the present disclosure, a method for displaying a three-dimensional virtual object is provided. The method comprises the following steps: detecting a gravity direction of a display unit; analyzing a rotation angle of the display unit based on changes in the gravity direction; calibrating a coordinate system of the display unit based on the rotation angle; and displaying a three-dimensional virtual object on the display unit based on the calibrated coordinate system.

According to another aspect of the present disclosure, a display device is provided. The display device includes a display unit, a gravity detection unit, an analysis unit, a coordinate correction unit, and an imaging unit. The gravity detection unit is used to detect a gravity direction of the display unit. The analysis unit is used to analyze a rotation angle of the display unit based on changes in the gravity direction. The coordinate correction unit is used to calibrate a coordinate system of the display unit based on the rotation angle. The imaging unit is used to display a three-dimensional virtual object on the display unit based on the calibrated coordinate system.

According to another aspect of the present disclosure, a laptop computer is provided. The laptop computer includes a host computer and a display device. The display device is pivotally connected to the host computer and can be rotated relative to the host computer. The display device includes a display unit, a gravity detection unit, an analysis unit, and a coordinate correction unit. The gravity detection unit is used to detect a gravity direction of the display unit. The analysis unit is used to analyze a rotation angle of the display unit based on changes in the gravity direction. The coordinate correction unit is used to calibrate a coordinate system of the display unit based on the rotation angle. The imaging unit is used to display a three-dimensional virtual object on the display unit based on the calibrated coordinate system.

To provide a better understanding of the above and other aspects of this disclosure, the following examples are given below with detailed descriptions in conjunction with the accompanying drawings:

100, 200, 300, 400: Display device

110: Image capture unit

111: Input unit

112: Split Unit

113:Conversion unit

120,520: Display unit

121: Display Panel

140: Gravity Detection Unit

150:Analysis Unit

160: Coordinate correction unit

170: Imaging unit

900: Host

1000: Laptop computer

BGr: Realistic background

BGf: Background image

CR: Coordinate system

FM: Two-dimensional image

GD: Gravity Direction

OB2: Two-dimensional objects

OB3: 3D Virtual Objects

RA: Rotation angle

SD: Shadow

S110, S120, S130, S140, S140’, S150, S150’, S160, S160, S170, S170’, S180, S190: Steps

Figure 1 shows a schematic diagram of a notebook computer according to an embodiment of the present disclosure.

Figure 2 shows a schematic diagram of flipping the display device of the notebook computer in Figure 1.

Figure 3 shows a block diagram of the display device in Figure 1.

Figure 4 shows a flow chart of a method for displaying a three-dimensional virtual object according to an embodiment of the present disclosure.

Figure 5 shows a block diagram of a display device according to another embodiment of the present disclosure.

Figure 6 shows a flow chart of a method for displaying a three-dimensional virtual object according to another embodiment of the present disclosure.

Figures 7 and 8 illustrate the steps in Figure 6.

Figure 9 shows a block diagram of a display device according to another embodiment of the present disclosure.

FIG10 is a flow chart illustrating a method for displaying a three-dimensional virtual object according to another embodiment of the present disclosure.

Figures 11 and 12 illustrate the steps in Figure 10.

Figure 13 shows a block diagram of a display device according to another embodiment of the present disclosure.

FIG14 is a flow chart illustrating a method for displaying a three-dimensional virtual object according to another embodiment of the present disclosure.

Figure 15 illustrates the steps in Figure 14.

Figure 16 illustrates a display unit according to another embodiment of the present disclosure.

Figure 17 illustrates the display unit in Figure 16 after rotation.

The technical terms used in this specification are based on customary terminology in the art. If this specification provides explanations or definitions for certain terms, the interpretation of such terms shall be subject to the explanations or definitions in this specification. Each embodiment disclosed herein has one or more technical features. Where feasible, a person skilled in the art may selectively implement some or all of the technical features of any embodiment, or selectively combine some or all of the technical features of these embodiments.

FIG1 is a schematic diagram of a laptop computer 1000 according to an embodiment of the present disclosure. As laptop computers become increasingly advanced, users' sensory requirements when using laptop computers 1000 also increase. For example, users may desire to display a three-dimensional virtual object OB3 on the display device 100.

Please refer to Figures 1 and 2 together. Figure 2 illustrates a schematic diagram of flipping the display device 100 of the laptop computer 1000 in Figure 1. In the present disclosure, the 3D virtual object OB3 displayed on the display device 100 can change along with the display device 100. As shown in Figure 2, when the display device 100 is pressed downward in a direction away from the host computer 900, a top view of the 3D virtual object OB3 is displayed on the display device 100, similar to looking down at the 3D virtual object OB3 from above.

Figure 3 shows a block diagram of the display device 100 in Figure 1. The display device 100 is pivotally connected to the host computer 900 and can be rotated relative to the host computer 900. The display device 100 includes a display unit 120, a gravity detection unit 140, an analysis unit 150, a coordinate correction unit 160, and an imaging unit 170. The display unit 120 is, for example, a liquid crystal display panel or an OLED display panel, and is used to display the three-dimensional virtual object OB3.

The gravity detection unit 140 is, for example, a gyroscope, an accelerometer, an accelerometer needle, an acceleration sensor, or a gravity acceleration sensor, and is used to detect a gravity direction GD of the display unit 120.

The analysis unit 150, the coordinate correction unit 160, and the imaging unit 170 are, for example, a circuit, a circuit board, a storage device storing program codes, or a chip. The chip may be, for example, a central processing unit (CPU), or other programmable general-purpose or special-purpose microcontroller unit (MCU), microprocessor, digital signal processor (DSP), programmable controller, application specific integrated circuit (ASIC), graphics processing unit (GPU), image signal processor (ISP), image processing unit (IPU), arithmetic logic unit (ALU), complex programmable logic device (CPLD), field programmable gate array (FPGA), or other similar components or combinations of the above components.

FIG4 illustrates a flow chart of a method for displaying a 3D virtual object OB3 according to an embodiment of the present disclosure. The method for displaying a 3D virtual object OB3 includes steps S110 to S130 and S180. The following description is in conjunction with FIG1 and FIG2.

In step S110, as shown in FIG2 , the gravity detection unit 140 detects a gravity direction GD of the display unit 120. The gravity direction GD is fixed toward the center of the earth.

Next, in step S120, as shown in FIG2 , the analysis unit 150 analyzes a rotation angle RA of the display unit 120 based on the change in the gravity direction GD. The rotation angle RA includes an angle and a direction.

Then, in step S130, as shown in FIG2 , the coordinate calibration unit 160 calibrates a coordinate system CR of the display unit 120 according to the rotation angle RA. The coordinate system CR is, for example, the coordinate system of the front lens.

Next, in step S180, as shown in FIG2 , the imaging unit 170 displays a 3D virtual object OB3 on the display unit 120 based on the calibrated coordinate system CR. In other words, the display unit 120 may display the 3D virtual object OB3 before the present display method is performed, or may display the 3D virtual object OB3 based on the calibrated coordinate system CR after the present display method is performed, although this is not intended to limit the present embodiment. Furthermore, the relationship between the 3D virtual object OB3 and the direction of gravity GD remains unchanged, but the 3D virtual object OB3 appears in a different orientation on the display unit 120.

When the back of the display device 100 in Figure 1 is substantially perpendicular to the ground, the display unit 120 displays the side of the three-dimensional virtual object OB3. When the back of the display device 100 in Figure 2 is tilted downward, the display unit 120 displays the top of the three-dimensional virtual object OB3.

Through the above-described embodiment, by flipping the display device 100 of the laptop computer 1000, a three-dimensional virtual object OB3 can be presented on the display device 100 from different angles. When a user views the three-dimensional virtual object OB3, it is as if they are viewing a three-dimensional real object.

FIG5 shows a block diagram of a display device 200 according to another embodiment of the present disclosure. Display device 200 includes an image capture unit 110, the aforementioned display unit 120, the aforementioned gravity detection unit 140, the aforementioned analysis unit 150, the aforementioned coordinate correction unit 160, and the aforementioned imaging unit 170. Image capture unit 110 is, for example, a camera, a camcorder, or a video camera, and is used to capture a real-life background BGr. Image capture unit 110 is connected to display unit 120.

FIG6 is a flowchart illustrating a method for displaying a 3D virtual object OB3 according to another embodiment of the present disclosure. Please also refer to FIG7 and FIG8 . FIG7 and FIG8 illustrate the steps of FIG6 . The method for displaying a 3D virtual object OB3 includes steps S110 to S150 and S180 .

In steps S110-S130, the coordinate calibration unit 160 calibrates the coordinate system CR of the display unit 120 according to the rotation angle RA.

In step S140, as shown in FIG7 , the image capture unit 110 captures a real-life background BGr, and the image capture unit 110 rotates along with the display unit 120. The image capture unit 110 is located on the back of the display device 200 and is therefore indicated by a dotted line.

Next, in step S150, as shown in FIG7 , the real scene background BGr is displayed on the display unit 120.

Then, in step S180, as shown in FIG7 , the imaging unit 170 displays the 3D virtual object OB3 on the display unit 120 according to the calibrated coordinate system CR. The 3D virtual object OB3 is superimposed on the real background BGr.

As shown in Figures 7-8, when the display unit 120 of the display device 200 is pressed downward, away from the host computer 900, the image capture unit 110 moves along with the display unit 120. As a result, the image capture unit 110 moves above the object, capturing a bird's-eye view of the real background BGr. Furthermore, through the calibration in steps S110-S130, the 3D virtual object OB3 is also converted into a bird's-eye view of the 3D image.

Therefore, the display unit 120 presents the three-dimensional virtual object OB3 and the real background BGr, which change their orientation synchronously.

FIG9 shows a block diagram of a display device 300 according to another embodiment of the present disclosure. The display device 300 includes the aforementioned display unit 120, the aforementioned gravity detection unit 140, the aforementioned analysis unit 150, the aforementioned coordinate correction unit 160, and the aforementioned imaging unit 170.

FIG10 is a flowchart illustrating a method for displaying a 3D virtual object OB3 according to another embodiment of the present disclosure. Please also refer to FIG11 and FIG12 . FIG11 and FIG12 illustrate the steps of FIG10 . The method for displaying a 3D virtual object OB3 includes steps S110 to S130, S180, and S190.

In steps S110 to S130, the coordinate calibration unit 160 calibrates the coordinate system CR of the display unit 120 according to the rotation angle RA.

Next, in step S180, as shown in FIG11 , the imaging unit 170 displays the three-dimensional virtual object OB3 on the display unit 120 according to the calibrated coordinate system CR.

Then, in step S190, as shown in FIG11 , the shadow SD of the three-dimensional virtual object OB3 is displayed on the display unit 120 according to the calibrated coordinate system CR.

As shown in Figures 11 and 12, when the display unit 120 is flipped downward, the three-dimensional virtual object OB3 and its shadow SD displayed by the display unit 120 are also updated.

According to the display method of the above embodiment, the three-dimensional virtual object OB3 displayed on the display unit 120 can be made more realistic, enhancing the user's three-dimensional experience on the screen.

FIG13 shows a block diagram of a display device 400 according to another embodiment of the present disclosure. Display device 400 includes an input unit 111, a segmentation unit 112, a conversion unit 113, the aforementioned display unit 120, the aforementioned gravity detection unit 140, the aforementioned analysis unit 150, the aforementioned coordinate correction unit 160, and the aforementioned imaging unit 170. Input unit 111 is used to obtain a two-dimensional image FM.

The dividing unit 112 and the converting unit 113 are, for example, a circuit, a circuit board, a storage device for storing program codes, or a chip. The chip may be, for example, a central processing unit (CPU), or other programmable general-purpose or special-purpose microcontroller unit (MCU), microprocessor, digital signal processor (DSP), programmable controller, application specific integrated circuit (ASIC), graphics processing unit (GPU), image signal processor (ISP), image processing unit (IPU), arithmetic logic unit (ALU), complex programmable logic device (CPLD), field programmable gate array (FPGA), or other similar components or combinations of the above components.

FIG14 is a flowchart illustrating a method for displaying a 3D virtual object OB3 according to another embodiment of the present disclosure. Please also refer to FIG15 , which illustrates the steps in FIG14 . The method for displaying the 3D virtual object OB3 includes steps S110 through S130, S140' through S170', and S180. In steps S110 through S130, the coordinate calibration unit 160 calibrates the coordinate system CR of the display unit 120 based on the rotation angle RA.

Next, in step S140', as shown in FIG15 , the input unit 111 obtains the two-dimensional image FM.

Next, in step S150', as shown in FIG15 , the segmentation unit 112 extracts a two-dimensional object OB2 and a background BGf from the two-dimensional frame FM.

Then, in step S160', as shown in Figure 15, the conversion unit 113 converts the two-dimensional object OB2 into a three-dimensional virtual object OB3.

Next, in step S170', as shown in FIG15 , the screen background BGf is displayed on the display unit 120.

Then, in step S180, as shown in FIG15, the imaging unit 170 displays the three-dimensional virtual object OB3 on the display unit 120 according to the calibrated coordinate system CR. The three-dimensional virtual object OB3 is superimposed on the screen background BGf.

According to the above embodiment, users can select their favorite two-dimensional screen FM and, after selecting a two-dimensional object OB2 on the two-dimensional screen FM, transform it into a three-dimensional virtual object OB3, making the three-dimensional display content richer and more diverse.

Figure 16 illustrates a display unit 520 according to another embodiment of the present disclosure. Figure 17 illustrates the display unit 520 of Figure 16 after rotation. In this embodiment, the display unit 520 is a cube composed of several display panels 121, each connected to each other at 90 degrees. These display panels 121 display a 3D virtual object OB3 at different angles, giving the user the illusion that the 3D virtual object OB3 is floating in mid-air.

As shown in FIG17 , when the display unit 520 rotates, the display panels 121 synchronously display the three-dimensional virtual object OB3 according to the calibrated coordinate system CR, so that the three-dimensional virtual object OB3 appears to maintain the same orientation in mid-air.

In other words, when these display panels 121 are rotated or continue to be rotated, the displayed 3D virtual object OB3 will continue to update and calibrate the coordinate system CR, so that the 3D virtual object OB3 remains in the center of the screen and maintains the same orientation, as if floating in the air.

According to the various embodiments described above, when the display devices 100, 200, 300, and 400 are flipped, the coordinate system CR can be transformed to change the different aspects of the three-dimensional virtual object OB3, thereby presenting a three-dimensional visual experience.

The above disclosure provides various features for implementing some embodiments or examples of the present disclosure. The specific examples of components and configurations described above (e.g., the referenced numbers or names) are provided to simplify/illustrate some embodiments of the present disclosure. Of course, these components and configurations are merely examples and are not intended to be limiting. Furthermore, some embodiments of the present disclosure may refer to repeated symbols and/or letters in various examples. This repetition is for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

In summary, although the present disclosure has been described above with reference to the embodiments, these are not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and enhancements can be made to the present disclosure without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the scope of the appended patent application.

S110, S120, S130, S180: Steps

Claims (13)

A method for displaying a three-dimensional virtual object comprises: Detecting a gravity direction of a display unit of a display device by a gravity detection unit; Analyzing a rotation angle of the display unit based on changes in the gravity direction by an analysis unit of the display device; Calibrating a coordinate system of the display unit based on the rotation angle by a coordinate correction unit of the display device; and Displaying a three-dimensional virtual object on the display unit by an imaging unit of the display device based on the calibrated coordinate system. The method for displaying a three-dimensional virtual object as described in claim 1, wherein the relationship between the three-dimensional virtual object and the direction of gravity remains unchanged. The method for displaying a three-dimensional virtual object as described in claim 1 further comprises: shooting a real-life background with an image capture unit, wherein the image capture unit rotates along with the display unit; and displaying the real-life background on the display unit, with the three-dimensional virtual object superimposed on the real-life background. The method for displaying a three-dimensional virtual object as recited in claim 1 further comprises: Displaying a shadow on the display unit based on the calibrated coordinate system. The method for displaying a three-dimensional virtual object as described in claim 1 further comprises: obtaining a two-dimensional image via an input unit of the display device; capturing a two-dimensional object and a screen background from the two-dimensional image via a segmentation unit of the display device; converting the two-dimensional object into the three-dimensional virtual object via a conversion unit of the display device; and displaying the screen background on the display unit and superimposing the three-dimensional virtual object on the screen background via the imaging unit. The method for displaying a three-dimensional virtual object as described in claim 1, wherein the display unit is a cube composed of a plurality of display panels, the display panels display the three-dimensional virtual object at different angles, and the display panels synchronously display the three-dimensional virtual object according to the calibrated coordinate system. A display device includes: a display unit; a gravity detection unit for detecting a gravity direction of the display unit; an analysis unit for analyzing a rotation angle of the display unit based on changes in the gravity direction; a coordinate correction unit for correcting a coordinate system of the display unit based on the rotation angle; and an imaging unit for displaying a three-dimensional virtual object on the display unit based on the corrected coordinate system. The display device of claim 7, wherein the relationship between the three-dimensional virtual object and the direction of gravity remains unchanged. The display device of claim 7 further comprises: an image capture unit for capturing a real background, the image capture unit being connected to the display unit so as to rotate therewith; wherein the display unit is further configured to display the real background, and the imaging unit is further configured to superimpose the three-dimensional virtual object on the real background. The display device of claim 7, wherein the imaging unit is further configured to display a shadow on the display unit based on the calibrated coordinate system. The display device of claim 7 further comprises: an input unit for acquiring a two-dimensional image; a segmentation unit for extracting a two-dimensional object and a screen background from the two-dimensional image; and a conversion unit for converting the two-dimensional object into the three-dimensional virtual object; wherein the display unit is further configured to display the screen background, and the imaging unit is further configured to superimpose the three-dimensional virtual object on the screen background. The display device of claim 7, wherein the display unit comprises: a plurality of display panels, the display panels forming a cube, the display panels displaying the three-dimensional virtual object at different angles, the imaging unit synchronously displaying the three-dimensional virtual object on the display panels according to the calibrated coordinate system. A notebook computer comprises: a host computer; and a display device pivotally connected to the host computer for rotation relative to the host computer, the display device comprising: a display unit; a gravity detection unit for detecting a gravity direction of the display unit; an analysis unit for analyzing a rotation angle of the display unit based on changes in the gravity direction; a coordinate correction unit for correcting a coordinate system of the display unit based on the rotation angle; and an imaging unit for displaying a three-dimensional virtual object on the display unit based on the corrected coordinate system.