Kabushiki Kaisha Toshiba

Toshiba Tec Kabushiki Kaisha

Robert Poe

Jonathan Yen

William C Kress

Harold Boll

Image tone adjustment systems and methods are disclosed. The system of the present invention includes an input to accept an input image. A curve generator is also disclosed that is used to generate a tone reproduction curve including a contrast stretch of the input image, a white stretch of the input image and a black stretch of the input image. Backlit correction is also applied by the tone adjustment corrector to thereby generate a tone adjusted image.

Digital image tone adjustment

The subject application is directed to a system and method for color space conversion. Image data is received comprised of a plurality of pixels having a value encoded in a first multidimensional color space. Each of the pixels encoded in the first color space is converted to a corresponding pixel encoded in a second multidimensional color space, the conversion further including transforming each of the pixels based upon a function of the pixel values in the first color space having component values defining a fractional relationship having a numerator portion and a denominator portion, with each portion including at least one of the component values. A value of each denominator portion is converted relative to a threshold value and the pixels encoded in the first color space are converted to the second color space with an alternative quantity selectively substituted for each denominator portion in accordance with the comparison.

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Encinitas, CA, United States of America

Robert Poe