Image analysis – Histogram processing – With a gray-level transformation
Patent
1997-05-16
1999-11-30
Tran, Phuoc
Image analysis
Histogram processing
With a gray-level transformation
382264, G06K 900
Patent
active
059956569
ABSTRACT:
In an image enhancing method, an input image signal is lowpass filtered and then histogram equalized to become a contrast-enhanced signal. The lowpass filtered signal is subtracted from the input image signal. Afterwards, the subtracted value is added to the contrast enhanced signal, and the added result is output as an image enhanced output signal. The contrast of a given image signal is improved without an increase in background noise.
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Samsung Electronics Co,. Ltd.
Tran Phuoc
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