Sharp Kabushiki Kaisha Corporation

Yoshinori Kohno

Akira Koike

Masahiko Takiguchi

Mihoko Watanabe

Ichiro Mizobuchi

Kohichi Takaku

Kenji Watanabe

Hiroaki Okumoto

Shigeki Taniguchi

Tsuyoshi Ohmori

Tetsuo Ikeyama

Ryohsuke Niizuma

Shinichi Nagashima

Hideto Yagisawa

Kodai Yamada

An image processing device () is configured such that an edge histogram creating section () calculates interproximal pixel luminance difference for each of pixels constituting a frame, and a first ratio, which is a ratio of pixels whose interproximal pixel luminance difference is greater than or equal to a first threshold, and an edge enhancement section () performs edge enhancement in such a way that a shoot component to be added is smaller for a frame having a larger first ratio.

Image processing device and image processing method

A video processing device () includes: an edge histogram generating section () and a noise reducing section (). The generating section () generates an edge histogram of a decoded image obtained from a video signal. The noise reducing section () (i) determines whether or not a ratio of a sum of frequencies of classes higher than a predetermined class of an edge histogram to a sum of all frequencies the edge histogram is equal to or greater than a predetermined threshold value and (ii) performs a smoothing process on the decoded image with a smoothing intensity adjusted in accordance with whether or not the ratio is equal to or greater than the predetermined threshold value.

Image processing device, moving-image processing device, video processing device, image processing method, video processing method, television receiver, program, and recording medium

Provided is a video processing technique capable of carrying out noise reduction processing and image quality correction using a configuration that is typically used in decoding processing. A video processing device according to the present invention counts the number of blocks in which a quantization parameter in video exceeds a predetermined threshold value and calculates a noise amount in the video based on the count result. Further, an amount by which the noise is to be reduced is adjusted in accordance with the calculated noise amount.

Video processing device, video processing method, video processing program, and storage medium

A display device () includes: a display section () which displays a picture; a user specifying section () which specifies a user viewing the display device; an image quality specifying section () which, in a case where the user specifying section () has specified a plurality of users, (i) obtains, from a recording section which records a plurality of setting values that correspond to user information for discriminating the plurality of users and are used to adjust an image quality, the plurality of setting values that correspond to the respective plurality of users thus specified and (ii) specifies, in accordance with the plurality of setting values thus obtained, a plurality of image qualities of a respective plurality of pictures to be displayed in the display section (); and an image quality adjustment instructing section () which instructs an image quality adjusting section () to cause the display section () to display the plurality of pictures at the respective plurality of image qualities thus specified.

Display device, television receiver, display device control method, programme, and recording medium

In a video display apparatus, a backlight for illuminating a liquid crystal panel is segmented into a plurality of areas. A frequency distribution processing unit calculates a dark pixel amount from the frequency distribution of the gradation values of pixels in a video image. A backlight control unit calculates a lower limit of luminance in each area included in the backlight so that the lower limit increases as the dark pixel amount becomes smaller. The backlight control unit adjusts the luminance in each area individually according to the gradation values in each portion of the video image, and adjusts the luminance in an area where the luminance is less than the lower limit to the lower limit. The difference in luminance between the areas illuminating dark portions of the video image is decreased, and the occurrence of luminance blur resulting from the difference in luminance between the areas is reduced.

Backlight luminance control apparatus and video display apparatus

Growing community of inventors

Osaka, Japan

Yoshinori Kohno