Standardization for image characteristics in telemammography

As the soft copy reading and 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 ofthe source ofthe digital data, either direct digital mammography or digitized screen-film mammography. So, here a standardization technique is proposed based on geometric and intensity transformation that are discovered using a set of calibration images. A set of transformation algorithm is used to search for the best standardization. Keywords: Mammography, CAD, histogram, image standardization