公开(公告)号：US07565034B2

公开(公告)日：2009-07-21

申请号：US10870192

申请日：2004-06-17

Applicant: Tiong Heng Siah ,  Heng Yew Kong

Inventor： Tiong Heng Siah ,  Heng Yew Kong

IPC: G06K9/54

CPC classification number: G06F3/0383 ,  G06F3/0317

Abstract: A technique for reducing navigation errors that are caused by uneven illumination involves using only the portion of the image data that is properly illuminated in the correlation process. The portion of the image data that is used for optical navigation is established by summing the image data on a per-slice basis, comparing the per-slice sums to a pre-established intensity threshold, and defining boundaries of the navigation window in response to the comparison. Boundaries are set at the points where the per-slice sums equal the pre-established intensity threshold.

Abstract translation: 用于减少由不均匀照明引起的导航错误的技术涉及仅使用在相关处理中适当照明的图像数据的一部分。 用于光学导航的图像数据的部分通过以每片为基础对图像数据求和，将每个切片总和与预先建立的强度阈值进行比较并且定义导航窗口的边界来响应于 比较。 边界设置在每个切片总和等于预先建立的强度阈值的点处。

公开(公告)号：US08325140B2

公开(公告)日：2012-12-04

申请号：US10827864

申请日：2004-04-20

Applicant: Tong Xie ,  Michael Brosnan ,  Tiong Heng Siah ,  Tong Sen Liew ,  Lye Hock Bernard Chan

Inventor： Tong Xie ,  Michael Brosnan ,  Tiong Heng Siah ,  Tong Sen Liew ,  Lye Hock Bernard Chan

IPC: G06F3/033

CPC classification number: G06F3/0317

Abstract: Illumination spot alignment is performed by capturing an image by an image array. The image is evaluated to determine an illumination spot size and location. Coordinates identifying the illumination spot size and location are stored.

Abstract translation: 通过图像阵列捕获图像来执行照明点对准。 评估图像以确定照明点尺寸和位置。 存储识别照明点尺寸和位置的坐标。

公开(公告)号：US07315013B2

公开(公告)日：2008-01-01

申请号：US10870412

申请日：2004-06-17

Applicant: Tiong Heng Siah ,  Heng Yew Kong

Inventor： Tiong Heng Siah ,  Heng Yew Kong

IPC: H01L27/00

CPC classification number: G06F3/0317 ,  G06T7/20

Abstract: A technique for optical navigation involves summing intensity values from a photodetector array on a per-column and a per-row basis for both reference image data and sample image data and then performing separate one-dimensional cross-correlations on the per-column sums and on the per-row sums to separately determine displacement in the x and y directions, respectively.

Abstract translation: 用于光学导航的技术涉及对于参考图像数据和样本图像数据在每列和每行基础上对来自光电检测器阵列的强度值进行求和，然后对每列的和进行单独的一维互相关， 在每行总和上分别确定x和y方向上的位移。