Sharp Kabushiki Kaisha Corporation

Tohru Hanaoka

Toshihisa Matsuo

Fumiaki Yamada

Fumio Kokubo

Eiji Kurimoto

Shota Inoue

Ryoji Ishimura

Kohhei Matsuo

A cleaning robot () which is an autonomous mobile system performs coordinate conversion of three-dimensional coordinate data acquired by measurement in a distance image sensor () which is arranged in a frontward and obliquely downward direction to generate three-dimensional coordinate data of a floor surface reference. Labels are applied to this data by judging a level difference or an obstacle according to height from a floor surface (F) to create overhead view image data seen from directly above a cleaning robot main body. The overhead view image data is scanned, and only when the labels are arranged in a specific order, processing for substituting an unspecified area with a level difference is performed. Thereby, positional deviation of an edge of the level difference, which is caused by a blind spot, is corrected and a position of the level difference is able to be grasped accurately.

Surrounding environment recognition device, autonomous mobile system using same, and surrounding environment recognition method

An object of the present invention is to obtain a display device having excellent display quality by appropriately modifying the chromaticity of images. In this display device, a correction processing part (CPU) determines a first chromaticity change amount stored in memory () on the basis of a first cumulative usage amount, which is the cumulative usage amount of an LED () up to a present time, the cumulative value having been measured by a counter (), and the correction processing part also determines a second chromaticity change amount stored in the memory () on the basis of a second cumulative usage amount, which is the cumulative usage amount of the LED () up to a time when the chromaticity of a pixel is adjusted by a chromaticity adjusting part (CPU), the cumulative value having been measured by the counter (). Then, by subtracting the second chromaticity change amount from the first chromaticity change amount, the correction processing part obtains the value to which the chromaticity is to be modified, and modifies an image signal on the basis of the value to which the chromaticity is to be modified.

Display device and television receiver

Growing community of inventors

Osaka, Japan

Tohru Hanaoka