Sony Corporation

Junji Kagita

Shigeru Harada

Kazuhiko Fujihara

Yoshihito Osawa

Yoshihito Ohsawa

A signal Y outputted from a Y/C separating circuit is supplied to first and second matrices. Signals R-Y and B-Y are supplied to the first matrix through a gain control amplifier (GCA) and are also supplied to the second matrix. The signals Y, R-Y, and B-Y are converted into three primary color signals R, G, and B by the second matrix. From the signals R, G, and B, a skin color component is detected by a skin color detecting circuit and E is outputted. On the basis of E , color components other than the skin color are detected by a color component detecting circuit and E is outputted. E &minus;E is supplied as a control voltage to the GCA. Gains for the signals R-Y and B-Y are controlled. When the video signal indicates the skin color component, the control voltage is set to 0 and the gain is set to 1. When the video signal indicates a color component other than the skin color component, E is generated, the control voltage rises, and the gain is increased. The colors other than the skin color are emphasized and the color contrast is more naturally enhanced.

Video image display apparatus and method

In a foreground/background discriminating circuit based on focusing, a leading edge of a boundary portion is detected from a video signal and a parallax control signal is outputted on the basis of the detected leading edge. Similarly, in foreground/background discriminating circuits based on color differences and based on a luminance, a chroma component and a luminance component of the video signal are detected and parallax control signals are generated on the basis of the detected chroma and luminance components, respectively. In a multiplier, the parallax control signals generated from the foreground/background discriminating circuits are multiplied. In a parallax limiting circuit, a delay amount control signal for a left video signal and a delay amount control signal for a right video signal are formed in a manner such that a binocular parallax amount lies within a predetermined value and within a range of an amount such that the existence of the parallax is recognized clearly.

Stereoscopic video display method and apparatus, stereoscopic video system, and stereoscopic video forming method

A stereoscopic feeling can be easily emphasized by properly applying seven items of: a front/rear feeling and depth feeling circuit,constructed by a front/rear feeling to shift a position of an image in the horizontal direction on the basis of edge information of a video signal and add to a binocular parallax and a depth feeling to set a center fusion image plane to a position behind a display surface; a glossy feeling and contrast emphasizing circuit,for detecting a glossy portion of the video signal and emphasizing a contrast of a single eye and both eyes in the glossy portion; a V aperture control and coring sharpness circuit,constructed by a vertical aperture control to raise frequencies of a middle low band or higher at a change point in the vertical direction and a coring sharpness to give a sharpness to only an edge having a large amplitude and high frequency components; and a color emphasizing circuit,for emphasizing color contrasts of colors other than a skin color.

When a 2-dimensional video image is displayed, a front/rear feeling and a stereoscopic feeling are enabled to be expressed. A detection signal Sd is formed by a high pass filter,and a rectifying circuit,in accordance with an amount of edge information. The detection signal Sd is supplied to a variable delay circuit,L. A detection signal Sd&prime; is supplied to a variable delay circuit,R. The variable delay circuits,L and,R are controlled in accordance with the edge information amount so that a video image for the left eye and a video image for the right eye are moved in the opposite directions. Thus, an imaginary image is synthesized to the front or rear side from a display plane. The left and right video images are displayed on CRTs,L and,R. The projection light passes through a horizontal polarizing filter,L and a vertical polarizing filter,R and the left and right video images are overlapped on a screen,. The left and right video images are separately observed by glasses,having polarizing filters,L and,R and a stereoscopic feeling is enhanced.

Growing community of inventors

Tokyo, Japan

Junji Kagita