Computer-aided determination of window and level settings for fi

Details Computer-aided determination of window and level settings for fi Computer-aided determination of window and level settings for fi

1998-01-29

2000-10-03

Ham, Seungsook

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

382171, G06K 900, G06K 934

Patent

active

061276693

ABSTRACT:
A window and level control tool that operates in real time and can quickly determine initial values for window and level settings such that a displayed image is always presented in a readable format is disclosed. The invention transforms input image data into an image histogram. This histogram is then segmented into a small number of parts corresponding to structures of interest. Segmentation of the histogram is done by a novel Viterbi optimal runlength-constrained approximation nonlinear filter. Window and level settings are calculated to correspond to this optimal segmentation. A readable image of one of the structures of interest is then displayed. In another embodiment, the tool provides a menu of optimal window and level settings corresponding to the different types of information a radiologist may be interested in.

REFERENCES:
patent: 4975970 (1990-12-01), Zettel et al.
patent: 5305204 (1994-04-01), Ohhashi
patent: 5447153 (1995-09-01), Weil et al.
patent: 5542003 (1996-07-01), Wofford
patent: 5563720 (1996-10-01), Edgar et al.

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