发明名称 |
Edge detection technique having improved feature visibility |
摘要 |
A method for determining edge features of an image comprising filtering at least a portion of the image to attenuate high frequency signals of the image to an extent greater than low frequency signals of the image. Performing a one-dimensional search in a two different horizontal directions relative to a particular pixel of the image to determine horizontal direction local maximums. Calculating a horizontal gradient based upon the horizontal direction local maximums. Performing a one-dimensional search in a two vertical horizontal directions relative to a particular pixel of the image to determine vertical direction local maximums. Calculating a vertical gradient based upon the vertical direction local maximums. Calculating a gradient for the particular pixel based upon the horizontal gradient and the vertical gradient. |
申请公布号 |
US8300949(B2) |
申请公布日期 |
2012.10.30 |
申请号 |
US20100782461 |
申请日期 |
2010.05.18 |
申请人 |
XU XINYU;SHARP LABORATORIES OF AMERICA, INC. |
发明人 |
XU XINYU |
分类号 |
G06K9/48;G06K9/40 |
主分类号 |
G06K9/48 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|