Invention Grant
US08150213B2 Image data compression method, pattern model positioning method in image processing, image processing apparatus, image processing program, and computer readable recording medium
有权
图像数据压缩方法，图像处理中的图案模型定位方法，图像处理装置，图像处理程序和计算机可读记录介质
- Patent Title: Image data compression method, pattern model positioning method in image processing, image processing apparatus, image processing program, and computer readable recording medium
- Patent Title (中): 图像数据压缩方法，图像处理中的图案模型定位方法，图像处理装置，图像处理程序和计算机可读记录介质
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Application No.: US12503955Application Date: 2009-07-16
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Publication No.: US08150213B2Publication Date: 2012-04-03
- Inventor: Manabu Kido
- Applicant: Manabu Kido
- Applicant Address: JP Osaka
- Assignee: Keyence Corporation
- Current Assignee: Keyence Corporation
- Current Assignee Address: JP Osaka
- Agency: Kilyk & Bowersox, P.L.L.C.
- Priority: JP2008-206479 20080809; JP2008-267978 20081016
- Main IPC: G06K9/32
- IPC: G06K9/32
Abstract:
There is provided a data compression method for increasing a reduction ratio, while keeping a sufficient characteristic amount, to seek speeding up of processing, the method being for compressing image data in pattern model positioning in image processing of searching out of an image to be searched and positioning a pattern model corresponding to a pre-registered image. The method includes the steps of computing an edge strength image having edge strength information and an edge angle image having edge angle information with respect to each pixel constituting an image; transforming the edge angle image of each pixel into an edge angle bit image expressed by an edge angle bit indicating an angle with a pre-defined fixed width; and compressing the edge angle bit image to create an edge angle bit reduced image by taking a sum with respect to each edge angle bit.
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