公开(公告)号：US20140133774A1

公开(公告)日：2014-05-15

申请号：US13757606

申请日：2013-02-01

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chien-Wei Chen

IPC: G06K9/40

CPC classification number: G06T5/005 ,  G06T5/20 ,  H04N5/3675

Abstract: An image processor is capable of performing an image dead pixel detection method, so as to detect at least one dead pixel in an input image. The image dead pixel detection method includes the following steps. A high-pass filter processing is performed on an input image, so as to obtain a filter image. A global mean value and a global standard difference are obtained according to the filter image. A to-be-detected pixel in the filter image is selected. A local mean value, a local standard difference, and a global mean value difference and a local mean value difference are obtained according to the to-be-detected pixel and multiple neighboring pixels. When the global mean value difference and the global standard difference satisfy a first condition, and the local mean value difference and the local standard difference satisfy a second condition, the to-be-detected pixel is considered as a dead pixel.

Abstract translation: 图像处理器能够执行图像死像素检测方法，以便检测输入图像中的至少一个死像素。 图像死像素检测方法包括以下步骤。 对输入图像进行高通滤波处理，以获得滤波图像。 根据过滤图像获得全局平均值和全局标准差。 选择滤波器图像中的待检测像素。 根据要检测的像素和多个相邻像素获得局部平均值，局部标准差，全局平均值差和局部平均值差。 当全局平均值差和全局标准差满足第一条件，并且局部平均值差和局部标准差满足第二条件时，被检测像素被认为是死像素。

公开(公告)号：US11341628B2

公开(公告)日：2022-05-24

申请号：US16853607

申请日：2020-04-20

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Shau-Yin Tseng ,  Yan-Jen Su ,  Jin-Nan Liu ,  Chien-Wei Chen

IPC: G06T7/33 ,  G06T7/00 ,  G06T7/60

Abstract: A method for compensating a design image of a workpiece and a system for processing the design image of the workpiece are disclosed. The method includes the following steps. Obtaining a real image of the workpiece, with the real image having registration holes. Calculating a slope value for each of the registration holes. Determining an amount of interpolation points between each two neighboring registration holes of the registration holes according to the slope value corresponding to each of the registration holes. Obtaining positions of control points in blocks formed by the registration holes. Compensating the design image of the workpiece according to positions of the registration holes, positions of the plurality of interpolation points and the positions of the control points for generating a mapping image. Outputting the mapping image adapted to be mapped onto the workpiece. The system, together with the method, will be introduced.