Invention Application
US20060039590A1 Edge adaptive image expansion and enhancement system and method
有权
边缘自适应图像扩展和增强系统和方法
- Patent Title: Edge adaptive image expansion and enhancement system and method
- Patent Title (中): 边缘自适应图像扩展和增强系统和方法
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Application No.: US10922328Application Date: 2004-08-20
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Publication No.: US20060039590A1Publication Date: 2006-02-23
- Inventor: Vladimir Lachine , Gregory Smith , Louie Lee
- Applicant: Vladimir Lachine , Gregory Smith , Louie Lee
- Applicant Address: US CA San Jose
- Assignee: Silicon Optix Inc.
- Current Assignee: Silicon Optix Inc.
- Current Assignee Address: US CA San Jose
- Main IPC: G06K9/00
- IPC: G06K9/00

Abstract:
An edge adaptive system and method for image filtering. The method maps each output pixel onto input image coordinates and then prefilters and resamples the input image pixels around this point to reduce noise and adjust the scale corresponding to a particular operation. Then the edge in the input image is detected based on local and average signal variances in the input pixels. According to the edge detection parameters, including orientation, anisotropy and variance strength, the method determines a footprint and frequency response for the interpolation of the output pixel. In a more particular implementation, the method divides the input pixel space into a finite number of directions called skews, and estimates the edge orientation with the nearest skew direction. This further facilitates pixels inclusion in the interpolation of the output pixel.
Public/Granted literature
- US07379626B2 Edge adaptive image expansion and enhancement system and method Public/Granted day:2008-05-27
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