SYSTEM AND METHOD FOR CAPTURING AND RENDERING A LANDSCAPE IMAGE OR VIDEO

• US 20150109408A1
• Filed: 10/21/2013
• Published: 04/23/2015
• Est. Priority Date: 10/21/2013
• Status: Abandoned Application

• Current Assignee: STMicroelectronics International N.V. (STMicroelectronics NV)
• Original Assignee: STMicroelectronics International N.V. (STMicroelectronics NV)
• Inventors: Sharma, Amit, Jairath, Gaurav, Singh, Paramanand
• Application Number:
  US14/058,794
• Publication Number:
  US 20150109408A1
• Time in Patent Office: Days
• US Class Current: 348/39
• CPC Class Codes: H04N 23/63 by using electronic viewfinders
• CPC Class Codes: H04N 23/667 Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
• CPC Class Codes: H04N 23/69 Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
• CPC Class Codes: H04N 5/2628 Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation

Abstract

The present disclosure provides a system and method for capturing and rendering a landscape image such that the field of view of the captured image remains consistent across any orientation maintained by the camera device at the time the image is captured. The retained field of view corresponds to the maximum landscape field of view achievable from the aspect ratio of the image when captured by the device, when the device is positioned in portrait orientation. Thus, the field of view of a landscape image captured when the camera device is positioned in landscape orientation is identical to the field of view of a landscape image captured when the device is positioned in portrait orientation. Furthermore, the system and method provide for a consistent field of view at the time of playback regardless of whether the captured image is displayed on a device having a portrait or landscape display orientation.

Claims

1. A method for rendering a landscape image of a scene captured by a camera device, the method comprising:

operating in a first mode when the camera device is positioned in a portrait orientation, the first mode comprising;

cropping a first capture of the scene, the first capture having a first aspect ratio, to produce a first cropped image having a second aspect ratio defining a field of view of the landscape image, and

generating, from the first cropped image, the landscape image having the field of view defined by the first cropped image.

2. The method as set forth in claim 1, further comprising:

operating in a second mode when the camera device is positioned in a landscape orientation, the second mode comprising;

performing a zoom operation to produce a magnified view of the scene, the magnified view of the scene having the second aspect ratio; and

generating, from the magnified view of the scene, the landscape image having a field of view substantially equal to the field of view defined by the first cropped image.

3. The method as set forth in claim 2, wherein performing the zoom operation to produce the magnified view of the scene comprises:

magnifying a second capture of the scene, the second capture having the first aspect ratio, to produce a magnified image having a width equal to the width of the field of view defined by the first cropped image; and

cropping the magnified image to produce the magnified view of the scene having the second aspect ratio.

4. The method as set forth in claim 2, wherein generating the landscape image from the magnified view of the scene includes at least one member of a group that includes:

rotating the magnified view of the scene;

resizing the magnified view of the scene; and

outputting the landscape image.

5. The method as set forth in claim 2, wherein the magnified view of the scene has a magnification equal to the lesser of the first aspect ratio and the second aspect ratio.

6. The method as set forth in claim 2, wherein the magnified view of the scene has a magnification equal to the sum of:

a) a user-selected magnification; and

b) the lesser of the first aspect ratio and the second aspect ratio.

7. The method as set forth in claim 1, wherein generating the landscape image from the first cropped image includes at least one member of a group that includes:

rotating the first cropped image;

resizing the first cropped image; and

outputting the landscape image.

8. The method as set forth in claim 1, wherein the first aspect ratio is an aspect ratio of an image sensor of the camera device.

9. A method for rendering a landscape image of a scene captured by a camera device, the landscape image having a first field of view when the landscape image is captured with the camera device positioned in a portrait orientation, and having a second field of view when the landscape image is captured with the camera device positioned in a landscape orientation, wherein the first field of view is substantially equal to the second field of view, the method comprising:

operating in a first mode when the camera device is positioned in the portrait orientation, the first mode comprising;

cropping a first capture of the scene, the first capture having a first aspect ratio, to produce a first cropped image having a second aspect ratio and defining the first field of view, and

generating, from the first cropped image, the landscape image having the first field of view; and

operating in a second mode when the camera device is positioned in the landscape orientation, the second mode comprising;

performing a zoom operation to produce a magnified view of the scene, the magnified view of the scene defining the second field of view, wherein the second field of view is substantially equal to the first field of view, and

generating, from the magnified view of the scene, the landscape image having the second field of view.

10. The method as set forth in claim 9, wherein performing the zoom operation to produce the magnified view of the scene comprises:

magnifying a second capture of the scene, the second capture having the first aspect ratio, to produce a magnified image having a width equal to a width of the first field of view; and

cropping the magnified image to produce the magnified view of the scene having the second aspect ratio.

11. The method as set forth in claim 9, wherein generating the landscape image from the first cropped image includes at least one member of a group that includes:

rotating the first cropped image;

resizing the first cropped image; and

outputting the landscape image.

12. The method as set forth in claim 9, wherein generating the landscape image from the magnified view of the scene includes at least one member of a group that includes:

rotating the magnified view of the scene;

resizing the magnified view of the scene; and

outputting the landscape image.

13. The method as set forth in claim 9, wherein the magnified view of the scene has a magnification equal to the lesser of the first aspect ratio and the second aspect ratio.

14. The method as set forth in claim 9, wherein the magnified view of the scene has a magnification equal to the sum of:

a) a user-selected magnification; and

b) the lesser of the first aspect ratio and the second aspect ratio.

15. The method as set forth in claim 9, wherein the first aspect ratio is an aspect ratio of an image sensor of the camera device.

16. The method as set forth in claim 9, wherein the second aspect ratio is an aspect ratio of the landscape image.

17. One or more computer-readable media embodied with computer-executable instructions that, when executed by one or more processors, perform a computer-implemented method for rendering a landscape image of a scene captured by a camera device, the landscape image having a first field of view when the landscape image is captured with the camera device positioned in a portrait orientation, and having a second field of view when the landscape image is captured with the camera device positioned in a landscape orientation, wherein the first field of view is substantially equal to the second field of view, the method comprising:

operating in a first mode when the camera device is positioned in the portrait orientation, the first mode comprising;

cropping a first capture of the scene, the first capture having a first aspect ratio, to produce a first cropped image having a second aspect ratio and defining the first field of view, and

generating, from the first cropped image, the landscape image having the first field of view; and

operating in a second mode when the camera device is positioned in the landscape orientation, the second mode comprising;

performing a zoom operation to produce a magnified view of the scene, the magnified view of the scene defining the second field of view, wherein the second field of view is substantially equal to the first field of view, and

generating, from the magnified view of the scene, the landscape image having the second field of view.

18. The one or more computer-readable media of claim 17, wherein performing the zoom operation to produce the magnified view of the scene comprises:

magnifying a second capture of the scene, the second capture having the first aspect ratio, to produce a magnified image having a width equal to a width of the first field of view; and

cropping the magnified image to produce the magnified view of the scene having the second aspect ratio.

19. The one or more computer-readable media of claim 17, wherein generating the landscape image from the first cropped image includes at least one member of a group that includes:

rotating the first cropped image;

resizing the first cropped image; and

outputting the landscape image.

20. The one or more computer-readable media of claim 17, wherein generating the landscape image from the magnified view of the scene includes at least one member of a group that includes:

rotating the magnified view of the scene;

resizing the magnified view of the scene; and

outputting the landscape image.

21. The one or more computer-readable media of claim 17, wherein the magnified view of the scene has a magnification equal to the lesser of the first aspect ratio and the second aspect ratio.

22. The one or more computer-readable media of claim 17, wherein the magnified view of the scene has a magnification equal to the sum of:

a) a user-selected magnification; and

b) the lesser of the first aspect ratio and the second aspect ratio.

23. The one or more computer-readable media of claim 17, wherein the first aspect ratio is an aspect ratio of an image sensor of the camera device.

24. The one or more computer-readable media of claim 17, wherein the second aspect ratio is an aspect ratio of the landscape image.

25. A device for rendering a landscape image of a scene, the device comprising:

circuitry operable to determine an orientation of the device;

an image sensor operable to capture an image of the scene exposed to the image sensor, the captured image having a sensor aspect ratio; and

image processing circuitry operable in a first mode to;

crop the captured image to produce a first cropped image having a second aspect ratio and defining a first field of view, and

generate, from the first cropped image, the landscape image having the first field of view;

wherein the image processing circuitry is further operable in a second mode to;

perform a zoom operation to produce a magnified view of the scene, the magnified view of the scene defining the second field of view, wherein the second field of view is substantially equal to the first field of view, and

generate, from the magnified view of the scene, the landscape image having the second field of view,

wherein the image processing circuitry operates in the first mode when the device is positioned in a portrait orientation and operates in the second mode when the device is positioned in a landscape orientation.

26. The device of claim 25, wherein performing the zoom operation to produce the magnified view of the scene comprises:

magnifying the captured image to produce a magnified image having a width equal to a width of the first field of view; and

cropping the magnified image to produce the magnified view of the scene having the second aspect ratio.

27. The device of claim 25, wherein the circuitry operable to determine the orientation of the device includes at least one member from a group that includes:

a gyroscope; and

one or more computer-readable media embodied with computer-executable instructions that, when executed by one or more processors, perform a computer-implemented method for recognizing images in the scene exposed to the image sensor.

28. The device of claim 25, wherein generating the landscape image from the first cropped image includes at least one member of a group that includes:

rotating the first cropped image;

resizing the first cropped image; and

outputting the landscape image.

29. The device of claim 25, wherein generating the landscape image from the magnified view of the scene includes at least one member of a group that includes:

rotating the magnified view of the scene;

resizing the magnified view of the scene; and

outputting the landscape image.

30. The device of claim 25, wherein the magnified view of the scene has a magnification equal to the lesser of the sensor aspect ratio and the second aspect ratio.

31. The device of claim 25, wherein the magnified view of the scene has a magnification equal to the sum of:

a) a user-selected magnification; and

b) the lesser of the sensor aspect ratio and the second aspect ratio.

32. The device of claim 25, wherein the second aspect ratio is an aspect ratio of the landscape image.