Sharp Kabushiki Kaisha Corporation

Osamu Manba

Daisuke Koyama

Koji Otsuka

Yasufumi Hagiwara

A touch pad outputs a detection signal indicating a coordinate corresponding to a contact state where a finger is in contact with the coordinate detecting unit, and a detection signal indicating a coordinate corresponding to a proximity state where the finger is in proximity to, without contact with, the coordinate detecting unit. An operation input device detects, based on the detection signals, a contact region in which the finger is in contact with the coordinate detecting unit, and a proximity region in which the finger is in proximity to, without contact with, the coordinate detecting unit. Then, the operation input device determines a pointed coordinate based on the contact region detected and the proximity region detected.

Operation input device, operation input method, and program

With a pixel included in image data as a reference pixel, a pixel that shares the same pixel value as the reference pixel or a pixel similar to the reference pixel is judged as a shared pixel, and for the pixel judged as the shared pixel, color of the reference pixel is regarded as a color judgment result of the shared pixel, thus making it possible to reduce color calculation processing for the shared pixel. This makes it possible to provide a color judging apparatus operating at higher speed and the like. Thereby, it is possible to provide the color judging apparatus operable at high speed and the like by reducing the number of times of the color calculation processing executed for an input image.

Color judging apparatus, color judging method, image processing circuit and program

An image processing device () includes: a luminance distribution information preparation section () for preparing a luminance histogram in which each luminance range serves as a class, by counting the number of pixels belonging to each luminance range; a weight correction section () for generating, for each luminance range, a weighting value which is proportional to a corresponding class value; and an image processing section () for correcting a luminance value of each pixel so that a difference between a maximum luminance value and a minimum luminance value in the luminance range is determined by an increasing function with respect to both (i) a frequency of the luminance range and (ii) a weighting value of the luminance range.

Image processing device, image processing method, image processing program, and recording medium, each capable of correcting luminance of image so that the local deterioration of grey scales is unlikely to occur

In an X-Y conversion chart, a threshold Th is defined as Y=0, that is, defined on the X axis, a range from &#x2212;Th to +Th is defined as a range in which smoothing processing is performed, and a range outside &#x2212;Th to +Th is defined as a range in which sharpening processing is performed. Among equations denoted by Yand Yexpressed by two linear straight lines, intersections of both the equations Yand Yare set to the maximum value and the minimum value of an X-Y conversion equation in this case. The threshold is expressed by an intersection of Yand the X axis. This algorithm is formed by three factors of: a coefficient &#x3b1; indicating the strength of smoothing; a coefficient &#x3b2; indicating the strength of sharpening; and a threshold Th on the X axis for determining switching between the smoothing processing and the sharpening processing.

Growing community of inventors

Osaka, Japan

Osamu Manba