文件名称:Porvoltahay
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Portal images are acquired by electronic portal imaging devices (EPID) with megavoltage (MV)
x-ray, but they are inherently poor in terms of contrast, due to Compton Effect. In comparison with
diagnostic x-ray images, portal images usually lack sufficient detail information for normal human
vision. Therefore, an effective method of enhancing these images would be very useful. This paper
proposes a new approach that combines global and local enhancement technique
x-ray, but they are inherently poor in terms of contrast, due to Compton Effect. In comparison with
diagnostic x-ray images, portal images usually lack sufficient detail information for normal human
vision. Therefore, an effective method of enhancing these images would be very useful. This paper
proposes a new approach that combines global and local enhancement technique
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1-s2.0-S0168900213000910-main.pdf