Method for maximizing fidelity and dynamic range for a region of

Details Method for maximizing fidelity and dynamic range for a region of Method for maximizing fidelity and dynamic range for a region of

1993-09-13

1996-07-30

Hayes, Gail O.

Image analysis

Applications

Biomedical applications

382298, 395139, G06F15900

Patent

active

055420036

ABSTRACT:
A method and apparatus is presented in which a medical imagery workstation provides an end-user interface which when activated, windows and levels a whole image or a region of interest within the image utilizing the pixel values within a selection area. The method and apparatus customizes the pixel values when the entire image is selected before calculating the window and levels to produce a higher contrast, then redraws the entire image utilizing the newly calculated window and level values. The present invention provides a method and apparatus to enable an operator to define a region of interest, that when activated, the image is redrawn utilizing only the pixel values from the region of interest, maximizing the brightness and contrast of the selected.

REFERENCES:
patent: 4353092 (1982-10-01), Bailey et al.
patent: 5305204 (1994-04-01), Ohhashi
Thurman Gillespy III, "Optimized Algorithms for Displaying 16-bit Gray Scale Images on 8-bit Computer Graphic Systems," Journal of Digital Imaging, vol. 6, No. 1 (Feb., 1993): 25-29.
Michael F. McNitt-Gray, Ricky K. Taira, Sandy L. Johnson, and Mahmood Razavi, "An Automatic Method for Enhancing the Display of Different Tissue Densities in Digital Chest Radiographs," Journal of Digital Imaging, vol. 6, No. 2 (May, 1993): 95-104.

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