公开(公告)号：US08599269B1

公开(公告)日：2013-12-03

申请号：US13784500

申请日：2013-03-04

Applicant: Apple Inc.

Inventor： Robin B. Jenkin ,  Hongqin Zhang

IPC: H04N17/02

CPC classification number: H04N17/002 ,  H04N9/04

Abstract: The embodiments of the invention here are automated systems and processes for testing a camera device. The processes can detect dark signal non-uniformity (DSNU) within a digital image that has been captured by a solid-state imaging sensor of the camera device under test. Techniques that may be able to detecting localized and global color drifts of various shapes have been described and claimed.

Abstract translation: 这里的本发明的实施例是用于测试相机设备的自动化系统和过程。 该过程可以检测由被测相机设备的固态成像传感器捕获的数字图像内的暗信号不均匀性（DSNU）。 已经描述和要求保护可能能够检测各种形状的局部和全局颜色漂移的技术。

公开(公告)号：US09030591B2

公开(公告)日：2015-05-12

申请号：US13708361

申请日：2012-12-07

Applicant: Apple Inc.

Inventor： Robin B. Jenkin ,  Eugene Lam

IPC: G03B13/00 ,  H04N5/232

CPC classification number: H04N5/23212

Abstract: An in-focus lens position may be determined by computing a focus metric value, by counting the number of transition pixels for images of a target captured at different lens positions. Using as little as two frames to compute two focus metric values, a reasonable approximation of the in-focus lens position may be obtained. The approximation of the in-focus lens position may then be used as a starting point for a fine focus search process, to determine an in-focus lens position. An advantage here is that the focus metric values relate to the number of transition pixels and are easy to compute, and yield a reasonable approximation of the in-focus position with just a few frames. Other embodiments are also described.

Abstract translation: 通过计算在不同透镜位置处捕获的目标的图像的转换像素的数量，可以通过计算焦点度量值来确定对焦透镜位置。 使用少至两帧来计算两个焦点度量值，可以获得对焦透镜位置的合理近似。 然后可以将对焦透镜位置的近似值用作微小焦点搜索处理的起始点，以确定对焦透镜位置。 这里的优点是焦点度量值与转换像素的数量有关，并且易于计算，并且仅仅使用几帧就可以合理地估计对焦位置。 还描述了其它实施例。

公开(公告)号：US20140022441A1

公开(公告)日：2014-01-23

申请号：US13708361

申请日：2012-12-07

Applicant: APPLE INC.

Inventor： Robin B. Jenkin ,  Eugene Lam

IPC: H04N5/232

CPC classification number: H04N5/23212

Abstract: An in-focus lens position may be determined by computing a focus metric value, by counting the number of transition pixels for images of a target captured at different lens positions. Using as little as two frames to compute two focus metric values, a reasonable approximation of the in-focus lens position may be obtained. The approximation of the in-focus lens position may then be used as a starting point for a fine focus search process, to determine an in-focus lens position. An advantage here is that the focus metric values relate to the number of transition pixels and are easy to compute, and yield a reasonable approximation of the in-focus position with just a few frames. Other embodiments are also described.

Abstract translation: 通过计算在不同透镜位置处捕获的目标的图像的转换像素的数量，可以通过计算焦点度量值来确定对焦透镜位置。 使用少至两帧来计算两个焦点度量值，可以获得对焦透镜位置的合理近似。 然后可以将对焦透镜位置的近似值用作微小焦点搜索处理的起始点，以确定对焦透镜位置。 这里的优点是焦点度量值与转换像素的数量有关，并且易于计算，并且仅仅使用几帧就可以合理地估计对焦位置。 还描述了其它实施例。