Patents by Inventor Junichi Takahasi

Junichi Takahasi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070187571
    Abstract: An autofocus control method, an autofocus control apparatus and an image processing apparatus all of which can realize stable autofocus control operation by eliminating influences due to optical systems. In calculation of a focus evaluated value of each of sample images respectively acquired at a plurality of focused positions, each of the acquired sample image is subjected to smoothing to reduce a grayscale pattern of brightness due to an optical system, and the focus evaluated value is calculated on the basis of the smoothed sample image. In addition, the focus evaluated value is standardized with the screen average luminance of the sample image, thereby effecting optimization of the evaluated value.
    Type: Application
    Filed: August 25, 2004
    Publication date: August 16, 2007
    Inventors: Hiroki Ebe, Masaya Yamauchi, Kiyoyuki Kikuchi, Kiyotaka Kuroda, Junichi Takahasi