Method and system for controlling a screen ratio based on a photographing ratio

• US 20030113012A1
• Filed: 10/24/2002
• Published: 06/19/2003
• Est. Priority Date: 08/17/2001
• Status: Abandoned Application

• Current Assignee: Geo-Rae Company Limited
• Original Assignee: Geo-Rae Company Limited
• Inventors: Yoon, Byoungyi
• Application Number:
  US10/280,246
• Publication Number:
  US 20030113012A1
• Time in Patent Office: Days
• US Class Current: 382/154
• CPC Class Codes: G03B 35/20 using two or more projectors
• CPC Class Codes: H04N 13/128 Adjusting depth or disparity
• CPC Class Codes: H04N 13/139 Format conversion, e.g. of frame-rate or size
• CPC Class Codes: H04N 13/194 Transmission of image signals
• CPC Class Codes: H04N 13/239 using two 2D image sensors having a relative position equal to or related to the interocular distance H04N13/243 takes precedence
• CPC Class Codes: H04N 13/246 Calibration of cameras
• CPC Class Codes: H04N 13/296 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 13/344 with head-mounted left-right displays
• CPC Class Codes: H04N 13/383 for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

This invention relates to a method and system of displaying an image. The method comprises generating a digital image of a scene by a camera. The method also comprises measuring a photographing ratio (A:B:C) of the camera while the digital image is being generated. The parameters A and B are horizontal and vertical lengths of the imaged scene, respectively, and C is a distance between an object lens of the camera and the scene. The method also comprises transmitting the image and the ratio (A:B:C) to a display device. The method comprises displaying the transmitted image such that a screen ratio (D:E:F) of the display device is substantially the same as the photographing ratio, wherein D and E are defined as horizontal and vertical lengths of the image displayed in the display device, respectively, and C is defined as a distance between the display device and a viewing point.

Claims

1. A method of displaying an image, comprising:

generating a digital image of a scene by a camera;

measuring a photographing ratio (A;

B;

C) of the camera while the digital image is being generated, wherein parameters A and B are defined as horizontal and vertical lengths of the scene imaged by the camera, respectively, and C is defined as a distance between an object lens of the camera and the scene;

transmitting the image and the photographing ratio (A;

B;

C) to a display device; and

displaying the transmitted image in the display device such that a screen ratio (D;

E;

F) of the display device is substantially the same as the photographing ratio (A;

B;

C), wherein D and E are defined as horizontal and vertical lengths of the image displayed in the display device, respectively, and C is defined as a distance between the display device and a viewing point.

2. The method of claim 1, wherein the viewing point comprises a point where the midpoint between a viewer'"'"'s eyes is located at a substantially perpendicular angle with regard to the center point of the displayed image.

3. The method of claim 2, wherein the camera comprises a focus adjusting device, the focus adjusting device comprising a plurality of scales, wherein the method further comprises storing maximum and minimum photographing ratios of the camera, and detecting a scale location of the focus adjusting device while generating the digital image, and wherein the parameters A and B are calculated using Equations I and II,

wherein Equation I is:

$A=\left(\frac{A_{\max }-A_{\min }}{c}\right)\times <br><br>\left(\frac{S_{\mathrm{cur}}}{S_{\mathrm{tot}}}\right)+\frac{A_{\min }}{c},<br><br>\text{\hspace{1em}<br><br>}$

and wherein Equation II is;

$B=\left(\frac{B_{\max }-B_{\min }}{c}\right)\times <br><br>\left(\frac{S_{\mathrm{cur}}}{S_{\mathrm{tot}}}\right)+\frac{B_{\min }}{c},$

wherein;

A_max and B_max are parameters for the maximum photographing ratio, A_min and B_min are parameters for the minimum photographing ratio, c is equal to 1, and S_tot and S_cur are the total number of scales and the detected scale location value, respectively.

4. The method of claim 3, further comprising:

providing a pixel resolution of the camera;

providing a pixel resolution of the display device; and

converting the resolution of the camera to the resolution of the display device based on the number of pixels to be displayed by the display device.

5. A method of displaying stereoscopic images, comprising:

producing at least one stereoscopic image of a scene, the stereoscopic image comprising a pair of two-dimensional plane images produced by first and second cameras;

measuring a first photographing ratio (A1;

B1;

C1) of the first camera and a second photographing ratio (A2;

B2;

C2) of the second camera while the scene is being imaged, respectively, wherein A1 and A2, and B1 and B2 are defined as horizontal and vertical lengths of the scene imaged by each of the first and second cameras, respectively, and C1 and C2 are defined as distances between object lenses of the cameras and the scene, respectively;

transmitting the stereoscopic image and the photographing ratios (A1;

B1;

C1, A2;

B2;

C2) to first and second display devices, respectively; and

displaying the transmitted stereoscopic image in the display devices such that each screen ratio (D1;

E1;

F1, D2;

E2;

F2) of the display devices is substantially the same as each photographing ratio (A1;

B1;

C1, A2;

B2;

C2), wherein D1 and D2, and E1 and E2 are defined as horizontal and vertical lengths of the two-dimensional plane images displayed in each of the display devices, respectively, and F1 and F2 are defined as distances between the display devices and viewing points, respectively.

6. The method of claim 5, wherein the viewing points comprises points where each of a viewer'"'"'s eyes is located at a substantially perpendicular angle with regard to the center points of the displayed images, respectively.

7. A system for displaying at least one image in at least one display device, comprising:

a receiver configured to receive at least one image of a scene and at least one photographing ratio, the at least one image being produced by at least one camera, wherein the photographing ratio is defined as a ratio (A;

B;

C) between three parameters A, B and C, wherein parameters A and B are defined as horizontal and vertical lengths of the scene imaged by the camera, respectively, and C is defined as a distance between an object lens of the camera and the scene;

a signal separator configured to separate the image and the photographing ratio;

an image size adjusting portion configured to adjust a size of the received image to be displayed based on the photographing ratio and at least one screen ratio, wherein the screen ratio is defined as a ratio (D;

E;

F) between three parameters D, E and F, wherein parameters D and E are defined as horizontal and vertical lengths of the image displayed in the display device, respectively, and C is defined as a distance between the display device and a viewing point; and

at least one display portion configured to display the adjusted image.

8. The system of claim 7, wherein the viewing point comprises a point where the midpoint between a viewer'"'"'s eyes is located at a substantially perpendicular angle with regard to the center point of the displayed image.

9. The system of claim 8, wherein the image size adjusting portion is further configured to receive the parameter F and calculate the two parameters (D, E) of the screen ratio using Equation V, wherein Equation V is:

10. The system of claim 8, wherein the image size adjusting portion is further configured to calculate image adjustment ratios (d, e) using Equation VI, wherein Equation VI is:

11. The system of claim 10, wherein the image size adjusting portion is further configured to magnify the display image and cut out a portion of the image greater than the screen size (G, H), where both ratios d and e are greater than 1.

12. The system of claim 10, wherein the image size adjusting portion is further configured to reduce the display image and fill a blank portion of the screen with a background color, where both ratios d and e are less than 1.

13. The system of claim 7, wherein the at least one camera comprises a pair of stereoscopic cameras configured to produce at least one stereoscopic image, the stereoscopic image comprising a pair of two-dimensional plane images produced by the set of stereoscopic cameras, respectively,

wherein the at least one display portion comprises a pair of display portions configured to display the pair of two-dimensional plane images, respectively,

and wherein the at least one photographing ratio comprises a pair of photographing ratios of each of the stereoscopic cameras, and the at least one screen ratio comprises a pair of screen ratios of each of the display portions.

14. The system of claim 13, wherein the display portions are selected from one of the following:

a head mount display and a set of projection display devices, a set of LCD devices, a set of CRT devices, and a set of plasma display panel devices.

15. A method of displaying images in at least one display device, comprising:

receiving at least one image of a scene and photographing ratio, the at least one image being produced by at least one camera, wherein the photographing ratio is defined as a ratio (A;

B;

C) between three parameters A, B and C, wherein parameters A and B are defined as horizontal and vertical lengths of the scene imaged by the camera, respectively, and C is defined as a distance between an object lens of the camera and the scene;

determining a screen ratio of the display device, wherein the screen ratio is defined as a ratio (D;

E;

F) between three parameters D, E and F, wherein parameters D and E are defined as horizontal and vertical lengths of the image displayed in the device, respectively, and C is defined as a distance between the display device and a viewing point;

adjusting a size of the received image to be displayed such that the photographing ratio (A;

B;

C) is substantially the same as the screen ratio (D;

E;

F); and

displaying the adjusted image in the display device.

16. The method of claim 15, wherein the viewing point comprises a point where the middle point between a viewer'"'"'s eyes is located in substantially perpendicular with regard to center point of the displayed image

17. The method of claim 15, wherein the at least one camera comprises a pair of stereoscopic cameras configured to produce at least one stereoscopic image, the stereoscopic image comprising a pair of two-dimensional plane images produced by the set of stereoscopic cameras, respectively,

wherein the at least one display device comprises a set of display devices configured to display the pair of two-dimensional plane images, respectively,

and wherein the at least one photographing ratio comprises a pair of photographing ratios of each of the stereoscopic cameras, and the at least one screen ratio comprises a pair of screen ratios of each of the display devices.

18. The method of claim 15, wherein the parameter F is determined using a distance detection sensor.

19. The method of claim 15, wherein the parameters D and E are stored in the display device.

20. The method of claim 15, wherein the parameters A1, B1 and C1 are substantially the same as the parameters A2, B2 and C2, respectively.

21. The method of claim 15, wherein the parameter F1 is substantially the same as the parameter F2.

22. A system for displaying images in at least one display device, comprising:

means for receiving at least one image of a scene and photographing ratio, the at least one image being produced by at least one camera, wherein the photographing ratio is defined as a ratio (A;

B;

C) between three parameters A, B and C, wherein parameters A and B are defined as horizontal and vertical lengths of the scene imaged by the camera, respectively, and C is defined as a distance between an object lens of the camera and the scene;

means for determining a screen ratio of the display device, wherein the screen ratio is defined as a ratio (D;

E;

F) between three parameters D, E and F, wherein parameters D and E are defined as horizontal and vertical lengths of the image displayed in the device, respectively, and C is defined as a distance between the display device and a viewing point;

means for adjusting a size of the received image to be displayed such that the photographing ratio (A;

B;

C) is substantially the same as the screen ratio (D;

E;

F); and

means for displaying the adjusted image in the display device.

23. A method of displaying stereoscopic images, comprising:

producing at least one stereoscopic image of a scene from three-dimensional structural data, the stereoscopic image comprising a pair of two-dimensional plane images projected by first and second projection portions;

providing a first photographing ratio (A1;

B1;

C1) of the first projection portion and a second photographing ratio (A2;

B2;

C2) of the second projection portion, respectively, wherein A1 and A2, and B1 and B2 are defined as horizontal and vertical lengths of the scene projected by each of the first and second projection portions, respectively, and C1 and C2 are defined as distances between the first and second projection portions and the scene, respectively;

transmitting the produced stereoscopic image and the corresponding photographing ratios (A1 ;

B1;

C1, A2;

B2;

C2) to first and second display devices; and

displaying the transmitted stereoscopic image in the display devices such that each screen ratio (D1;

E1;

F1, D2;

E2;

F2) of the display devices is substantially the same as each photographing ratio (A1;

B1;

C1, A2;

B2;

C2), wherein D1 and D2, and E1 and E2 are defined as horizontal and vertical lengths of the two-dimensional images displayed in each of the display devices, respectively, and F1 and F2 are defined as distances between the display devices and viewing points, respectively.

24. A method of displaying stereoscopic images, comprising:

producing at least one stereoscopic image of a scene from three-dimensional structural data, the stereoscopic image comprising a pair of two-dimensional plane images projected by first and second projection portions;

providing a first photographing ratio (A1;

B1 ;

C1) of the first projection portion and a second photographing ratio (A2;

B2;

C2) of the second projection portion, respectively, wherein A1 and A2, and B1 and B2 are defined as horizontal and vertical lengths of the scene projected by each of the first and second projection portions, respectively, and C1 and C2 are defined as distances between the first and second projection portions and the scene, respectively; and

displaying the stereoscopic image in a pair of display devices such that each screen ratio (D1;

E1;

F1, D2;

E2;

F2) of the display devices is substantially the same as each photographing ratio (A1;

B1;

C1, A2;

B2;

C2), wherein D1 and D2, and E1 and E2 are defined as horizontal and vertical lengths of the two-dimensional plane images displayed in each of the display devices, respectively, and F1 and F2 are defined as distances between the display devices and viewing points, respectively.

25. A system for displaying stereoscopic images, comprising:

first and second projection portions configured to produce at least one stereoscopic image of a scene from three-dimensional structural data, the stereoscopic image comprising a pair of two-dimensional plane images projected by first and second projection portions;

a computing device configured to provide a first photographing ratio (A1;

B1;

C1) of the first projection portion and a second photographing ratio (A2;

B2;

C2) of the second projection portion, respectively, wherein A1 and A2, and B1 and B2 are defined as horizontal and vertical lengths of the scene projected by each of the first and second projection portions, respectively, and C1 and C2 are defined as distances between each of the projection portions and the scene, respectively; and

a display portion configured to display the stereoscopic image in a pair of display screens such that each screen ratio (D1;

E1;

F1, D2;

E2;

F2) of the display screens is substantially the same as each photographing ratio (A1;

B1;

C1, A2;

B2;

C2), wherein D1 and D2, and E1 and E2 are defined as horizontal and vertical lengths of the two-dimensional plane images displayed in each of the display screens, respectively, and F1 and F2 are defined as distances between the display screens and viewing points, respectively.