公开(公告)号：US20150035991A1

公开(公告)日：2015-02-05

申请号：US14513046

申请日：2014-10-13

Applicant: Apple Inc.

Inventor： Todd S. Sachs ,  Kevin L. Hunter ,  Marco Zuliani ,  Claus Molgaard

IPC: G06T7/00 ,  H04N5/232 ,  H04N17/00

CPC classification number: G06T7/0018 ,  G06T7/80 ,  G06T2207/10004 ,  H04N5/23216 ,  H04N5/23293 ,  H04N17/002

Abstract: A method for dynamically calibrating rotational offset in a device includes obtaining an image captured by a camera of the device. Orientation information of the device at the time of image capture may be associated with the image. Pixel data of the image may be analyzed to determine an image orientation angle for the image. A device orientation angle may be determined from the orientation information. A rotational offset, based on the image orientation angle and the device orientation angle, may be determined. The rotational offset is relative to the camera or orientation sensor. A rotational bias may be determined from statistical analysis of numerous rotational offsets from numerous respective images. In some embodiments, various thresholds and predetermined ranges may be used to exclude some rotational offsets from the statistical analysis or to discontinue processing for that image.

Abstract translation: 用于动态校准装置中的旋转偏移的方法包括获得由装置的照相机拍摄的图像。 图像拍摄时设备的方向信息可能与图像相关联。 可以分析图像的像素数据以确定图像的图像取向角度。 可以根据取向信息来确定设备取向角度。 可以确定基于图像取向角度和装置取向角度的旋转偏移。 旋转偏移量相对于相机或方位传感器。 旋转偏差可以根据来自大量各自图像的许多旋转偏移的统计分析来确定。 在一些实施例中，可以使用各种阈值和预定范围来从统计分析中排除一些旋转偏移或者中断对该图像的处理。

公开(公告)号：US08860818B1

公开(公告)日：2014-10-14

申请号：US13955467

申请日：2013-07-31

Applicant: Apple Inc.

Inventor： Todd S. Sachs ,  Kevin L. Hunter ,  Marco Zuliani ,  Claus Molgaard

IPC: H04N17/00 ,  H04N5/232

CPC classification number: G06T7/0018 ,  G06T7/80 ,  G06T2207/10004 ,  H04N5/23216 ,  H04N5/23293 ,  H04N17/002

Abstract: A method for dynamically calibrating rotational offset in a device includes obtaining an image captured by a camera of the device. Orientation information of the device at the time of image capture may be associated with the image. Pixel data of the image may be analyzed to determine an image orientation angle for the image. A device orientation angle may be determined from the orientation information. A rotational offset, based on the image orientation angle and the device orientation angle, may be determined. The rotational offset is relative to the camera or orientation sensor. A rotational bias may be determined from statistical analysis of numerous rotational offsets from numerous respective images. In some embodiments, various thresholds and predetermined ranges may be used to exclude some rotational offsets from the statistical analysis or to discontinue processing for that image.

Abstract translation: 用于动态校准装置中的旋转偏移的方法包括获得由装置的照相机拍摄的图像。 图像拍摄时设备的方向信息可能与图像相关联。 可以分析图像的像素数据以确定图像的图像取向角度。 可以根据取向信息来确定设备取向角度。 可以确定基于图像取向角度和装置取向角度的旋转偏移。 旋转偏移量相对于相机或方位传感器。 旋转偏差可以根据来自大量各自图像的许多旋转偏移的统计分析来确定。 在一些实施例中，可以使用各种阈值和预定范围来从统计分析中排除一些旋转偏移或者中断对该图像的处理。

公开(公告)号：US09092853B2

公开(公告)日：2015-07-28

申请号：US14513046

申请日：2014-10-13

Applicant: Apple Inc.

Inventor： Todd S. Sachs ,  Kevin L. Hunter ,  Marco Zuliani ,  Claus Molgaard

IPC: H04N17/00 ,  G06T7/00 ,  H04N5/232

CPC classification number: G06T7/0018 ,  G06T7/80 ,  G06T2207/10004 ,  H04N5/23216 ,  H04N5/23293 ,  H04N17/002

Abstract: A method for dynamically calibrating rotational offset in a device includes obtaining an image captured by a camera of the device. Orientation information of the device at the time of image capture may be associated with the image. Pixel data of the image may be analyzed to determine an image orientation angle for the image. A device orientation angle may be determined from the orientation information. A rotational offset, based on the image orientation angle and the device orientation angle, may be determined. The rotational offset is relative to the camera or orientation sensor. A rotational bias may be determined from statistical analysis of numerous rotational offsets from numerous respective images. In some embodiments, various thresholds and predetermined ranges may be used to exclude some rotational offsets from the statistical analysis or to discontinue processing for that image.

Abstract translation: 用于动态校准装置中的旋转偏移的方法包括获得由装置的照相机拍摄的图像。 图像拍摄时设备的方向信息可能与图像相关联。 可以分析图像的像素数据以确定图像的图像取向角度。 可以根据取向信息来确定设备取向角度。 可以确定基于图像取向角度和装置取向角度的旋转偏移。 旋转偏移量相对于相机或方位传感器。 旋转偏差可以根据来自大量各自图像的许多旋转偏移的统计分析来确定。 在一些实施例中，可以使用各种阈值和预定范围来从统计分析中排除一些旋转偏移或者中断对该图像的处理。