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专利名称：Method for generating orientation image发明人：Ming-Jiun Liaw,Chao-Yi Lin申请号：US14469594申请日：20140827公开号：US09846945B2公开日：20171219
专利附图：
摘要：A method for generating an orientation image, adapted to an electronic device,includes the following steps. A plurality of input pixels including a current input pixel ofan input image is received. Edge detection is performed on the current input pixel in afirst and second direction to generate a first current gradient and a second current
gradient respectively with respect to the first direction and the second direction. A ratioof the first current gradient to a current gradient absolute sum is calculated to obtain acurrent ratio, where the current gradient absolute sum is a sum of absolute values of thefirst and second current gradient. A sign of the second current gradient is extracted toobtain a current sign. The current ratio and the current sign are inputted to a lookuptable to obtain an image orientation angle corresponding to the current input pixel.
申请人：Altek Autotronics Corporation
地址：Hsinchu TW
国籍：TW
代理机构：Jianq Chyun IP Office
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