Standardization for image characteristics in telemammography using genetic and nonlinear algorithms.
As the soft copy reading and computer assisted diagnosis ( CAD) in mammography become more and more important, the standardization of digital images becomes paramount. Telemammography and telemedicine requires the standardization for image characteristics, such as image resolution, bit-depth and intensity response. Soft copy reading and CAD in mammography are both dependent on the characteristics of the source of the digital data, either direct digital mammography or digitized screen-film mammography. An algorithm developed on images from one database may not perform well as on images from another database (with a different digitization). In this paper, we describe two methods based on a genetic algorithm and a nonlinear algorithm for standardization of digitized and digital mammography. The proposed standardization techniques are based on geometric and intensity transformations that are discovered using a set of calibration images. A set of transformation algorithm is used to search for the best standardization.[1]References
- Standardization for image characteristics in telemammography using genetic and nonlinear algorithms. Qian, W., Sankar, R., Song, X., Sun, X., Clark, R. Comput. Biol. Med. (2005) [Pubmed]
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