Display system and display method for vehicle

Abstract

This invention proposes a vehicle display system and method. The system includes a display device and a processor. The display device directs an image beam onto a transparent element of the vehicle. The processor determines whether the display device is in a first mode or a second mode. The focal length of the display device in the first mode is greater than the focal length of the display device in the second mode. In the first mode, the display device generates an image beam based on internal information. In the second mode, the display device generates an image beam based on external information.

Claims

1. A vehicle display system comprising: a display device for directing an image beam toward a transparent element of the vehicle; and a processor electrically connected to the display device for determining whether the display device is in a first mode or a second mode, wherein the focal length of the display device in the first mode is greater than the focal length of the display device in the second mode, wherein in the first mode, the display device generates the image beam based on in-line information, and wherein in the second mode, the display device generates the image beam based on out-of-line information.

2. The vehicle display system as claimed in claim 1, wherein the angle at which the display device emits the image beam in the first mode is different from the angle at which the display device emits the image beam in the second mode.

3. The vehicle display system of claim 2, wherein the transparent element includes an electrochromic module electrically connected to the processor, wherein the processor controls the electrochromic module to be transparent in the first mode and controls the electrochromic module to be foggy in the second mode.

4. The vehicle display system as described in claim 1, further comprising: An image sensor is used to capture an environmental image, wherein in the second mode, the processor is used to detect an object in the environmental image and determine the position of the external information displayed on the transparent element based on the position of the object.

5. The vehicle display system as claimed in claim 1, wherein the processor is configured to execute a calibration procedure, the calibration procedure comprising: The display device is controlled to project a reference image onto the transparent element, wherein the reference image includes a plurality of first patterns, each of which includes a second pattern, the first patterns being different from the second patterns; and an image sensor is used to capture an actual image corresponding to the reference image toward the transparent element.

6. The vehicle display system as claimed in claim 5, wherein the calibration procedure further includes: The actual image is binarized according to a threshold to obtain a binarized image; multiple first actual patterns in the binarized image are detected, and the average and standard deviation of the areas of the first actual patterns are calculated; and based on the average and standard deviation, it is determined whether to delete at least one of the first actual patterns to obtain multiple remaining patterns; when the number of remaining patterns is greater than the number of first patterns, the threshold is increased; when the number of remaining patterns is less than the number of first patterns, the threshold is decreased; and when the number of remaining patterns is equal to the number of first patterns, the remaining patterns are output.

7. The vehicle display system as claimed in claim 6, wherein the calibration procedure further comprises: Detect multiple second actual patterns within the range of these remaining patterns, and obtain a coordinate of each of these second actual patterns; Perform linear fitting based on these coordinates to obtain multiple first horizontal lines and multiple first straight lines, and remove at least one outlier value from these second actual patterns; After removing outliers, the linear fit is re-executed to obtain multiple second horizontal lines and multiple second straight lines, and multiple intersection points between these second horizontal lines and these second straight lines are obtained; and a transformation matrix is ​​corrected based on these intersection points.

8. The vehicle display system as claimed in claim 1, wherein the external information includes charging information, contact information, a barcode or an advertisement, and the internal information includes vehicle speed information, navigation information or vehicle detection information.

9. The vehicle display system as claimed in claim 8, wherein the processor is communicatively connected to an external device, receives a setting from the external device, and determines the external information based on the setting.

10. A vehicle display method, executed by a processor, wherein a vehicle includes a display device and a transparent element, the vehicle display method comprising: Determine whether the display device is in a first mode or a second mode; The display device is configured such that its focal length in a first mode is greater than its focal length in a second mode; in the first mode, the display device is controlled to generate a first image beam according to an internal pair of information to be directed toward the transparent element; and in the second mode, the display device is controlled to generate a second image beam according to an external pair of information to be directed toward the transparent element.

11. The vehicle display method as described in claim 10, further comprising: The angle at which the display device emits the first image beam in the first mode is different from the angle at which the display device emits the second image beam in the second mode.

12. The vehicle display method as claimed in claim 11, wherein the transparent element comprises an electrochromic module, the vehicle display method further comprising: The electrochromic module is controlled to be in a transparent state in the first mode and in a foggy state in the second mode.

13. The vehicle display method as described in claim 10 further includes: Capture an environmental image using an image sensor; In the second mode, an object in the environmental image is detected, and the position of the external information displayed on the transparent element is determined based on the position of the object.

14. The vehicle display method as described in claim 10 further includes: Perform a calibration procedure, the calibration procedure comprising: controlling the display device to project a reference image onto the transparent element, wherein the reference image includes a plurality of first patterns, each of the first patterns including a second pattern, the first patterns being different from the second patterns; and capturing an actual image corresponding to the reference image through an image sensor toward the transparent element.

15. The vehicle display method as described in claim 14, wherein the correction procedure further comprises: The actual image is binarized according to a threshold to obtain a binarized image; multiple first actual patterns in the binarized image are detected, and the average and standard deviation of the areas of the first actual patterns are calculated; and based on the average and standard deviation, it is determined whether to delete at least one of the first actual patterns to obtain multiple remaining patterns; when the number of remaining patterns is greater than the number of first patterns, the threshold is increased; when the number of remaining patterns is less than the number of first patterns, the threshold is decreased; and when the number of remaining patterns is equal to the number of first patterns, the remaining patterns are output.

16. The vehicle display method as described in claim 15, wherein the correction procedure further includes: Detect multiple second actual patterns within the range of these remaining patterns, and obtain a coordinate of each of these second actual patterns; Perform linear fitting based on these coordinates to obtain multiple first horizontal lines and multiple first straight lines, and remove at least one outlier value from these second actual patterns; After removing outliers, the linear fit is re-executed to obtain multiple second horizontal lines and multiple second straight lines; multiple intersection points between these second horizontal lines and multiple second straight lines are obtained; and a transformation matrix is ​​corrected based on these intersection points.

17. The vehicle display method as described in claim 10, wherein the external information includes charging information, contact information, a barcode, or an advertisement, and the internal information includes vehicle speed information, navigation information, or vehicle detection information.

18. The vehicle display method as described in claim 17, further comprising: Receive a setting from an external device and determine the external information based on that setting.

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