Image signal processing method and image signal processing...

Details Image signal processing method and image signal processing... Image signal processing method and image signal processing...

2011-08-30

2011-08-30

Tran, Sinh (Department: 2622)

Television

Camera, system and detail

Optics

C348S364000, C348S222100

Reexamination Certificate

active

08009224

ABSTRACT:
It is possible to improve a response of a dynamic range expansion processing. The present image signal processing method includes a first step (ST2) of extracting distribution parameters from a distribution of pixel signal levels composing an image signal of one picture, a second step (ST4, ST5) of determining a target value (BP1, BP2, etc.) of a break point based on extracted distribution parameters for a break point at which an inclination of an image signal level changes with respect to a cumulative change of amount of incident light upon pixels of the imaging portion changes, and a third step (ST6, ST7) of controlling the imaging portion so as to obtain a target value and change an output saturation characteristic of the image signal.

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English translation of Chinese language office action for corresponding Chinese application 200680053276 lists the references above.
Japanese language office action and its English language translation for corresponding Japanese application 2005375972.

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