SYSTEM AND METHOD FOR MEDICAL IMAGE QUALITY ENHANCEMENT USING MULTISCALE TOTAL VARIATION FLOW,申请号US201414766587-传众专利搜索

SYSTEM AND METHOD FOR MEDICAL IMAGE QUALITY ENHANCEMENT USING MULTISCALE TOTAL VARIATION FLOW

申请公布号：US2015371372(A1)

申请号：US201414766587

申请日期：2014.02.07

申请公布日期：2015.12.24

申请人：

SUNNYBROOK HEALTH SCIENCES CENTRE

发明人：ATHAVALE Prashant;NACHMAN Adrian;WRIGHT Graham;RADAU Perry

分类号：G06T5/00;A61B5/00;A61B5/055;G06T7/00;G06T5/20

主分类号：G06T5/00

地址：Toronto CA

摘要：Methods for representing multiple scales in an image using a variational algorithm are provided. An iterative decomposition of an image into a total variation (“TV”) part, which may be a weighted TV (“TVα”) part, and a residual part motivates the design and use of a partial differential equation that may be referred to as a multiscale total variation flow, or multiscale weighted total variation flow. This produces a multiscale representation of the image. The speed of this decomposition can be controlled with a user-defined function, and is fast enough to allow for real-time applications of denoising and image registration.

主权项：1. A method for denoising an image, the steps of the method comprising: a) providing an image to be denoised; b) generating a smoothed image from the provided image by computing a total variation flow of the provided image according to a scale parameter; c) updating the provided image by storing the smoothed image as an updated version of the provided image; d) iteratively repeating steps b) and c) until a stopping criterion is satisfied, wherein each repetition of step b) includes generating the smoothed image from the updated version of the provided image using a different scale parameter; and e) storing the updated version of the provided image that satisfies the stopping criterion in step d) as a denoised image.