Abstract: It is an object to easily, and using existing devices, perform shadow enhancement that achieves an increase in the feeling of depth of 2D video. The input image data are first converted into brightness information by a brightness information calculation portion. Then, based on that brightness information, the normal direction and the edge information in the pixel targeted for processing are estimated by a normal direction estimation portion. A corrected gradation derivation portion then performs correction processing such as the addition of shadow component on the input image based on the brightness information and the estimated normal direction and edge information to create a processed image that has a feeling of depth, and then an output portion converts this to a predetermined image format and outputs it. In this way, it is possible to easily increase the feeling of depth of a 2D image through the addition of shadow, for example, in accordance with the characteristics of the input image.

Abstract: It is an object to perform color correction that is simple and utilizes existing devices to achieve an increase in the feeling of depth in 2D images. Input image data are transformed into predetermined color information by a color information calculation portion 11. A correction amount control portion 10 determines a correction gain value for the color information according to depth information that has been input. A color information correction portion 12 performs color information correction based on the correction amount due to the contrast between the color information of a target pixel and representative color information of the surrounding region, and the correction gain value of the correction amount control portion. An output portion 13 converts this into a predetermined image format and outputs the result.

Abstract: A display control device is provided which includes characteristic value-calculating unit for calculating a characteristic value based on an input image signal, a conversion characteristic-calculating unit for determining a conversion characteristic from the characteristic value, and a signal-converting unit for converting the input image signals in accordance with the determined conversion characteristic. The conversion characteristic has a low level region segment, which is close to the origin of axes respectively representing the input image signal and an output image signal of the display control device, a high level region segment, which is close to a full scale point, and a middle level region segment, which is positioned between the low level region and high level region, and the slope in the middle level region is set so as to be larger than both of the slopes of the low level region and the high level region.

Abstract: There is provided a correlation between adjustment of luminance of a LCD and adjustment of luminance of a backlight. Luminance average value “Iave” is determined from display data. Luminance maximum value “I1max” in a macro area is determined from the display data. Luminance is adjusted with reference to luminance-transformed luminance. In luminance transformation, slope average “r1” in a range of 0?I<Iave, slope average “r2” in a range of Iave?I<I1max, and slope average “r3” in a range of I?I1max establish a relationship of r1?r2>r3 in an area defined by a horizontal axis showing luminance “I” and a vertical axis showing luminance-transformed luminance “I#”.

Abstract: A pseudo-tone processing means color-reduces each RGB component of incoming display data using pseudo-tone processing. A frame memory stores the color-reduced display data before feeding it to a display through a drive means. Color reduction is performed so that the tone number of each RGB component after color reduction is G component>R component>B component. Color reduction is unequally performed in a manner which reflects contributions of each RGB component to brightness.

Abstract: Colorimetry values when a display unit displays tone signals R(i), G(i) and B(i) (where a number i is a tone value; 1<i<n) are acquired. The colorimetry values are defined using a device independent color of a CIE-XYZ color space, and are composed of three attributes X (i), Y (i) and Z (i). Calculation based on the three attributes is performed to generate a tone profile, that is, an adjusting condition. Utilizing the tone profile, a tone-adjusting unit adjusts color data. Color temperature is kept flat, color reproducibility in halftone (for example, a skin color of a natural image) and display quality can be improved.

Abstract: The image processing device comprises a target correction amount calculating unit operable to calculate target correction amount based on input image signals, a frame memory operable to store the input image signals, a scene change amount calculating unit operable to calculate scene change amount based on an input image signal of the present frame and an input image signal of the previous frame, a correction amount calculating unit operable to calculate correction amount for the input image signal of the present frame, based on the target correction amount and the scene change amount, and a correcting unit operable to perform image quality correction to the input image signal of the present frame to generate a corrected input image signal, thereby outputting the corrected input image signal as an output image signal.

Abstract: A specific color-adjusting stage adjusts data of an inputted color with respect to a specific color. A total color-adjusting stage adjusts the data of the inputted color with respect to a total color. The specific color-adjusting stage and the total color-adjusting stage are provided in parallel. A composing unit composes linearly an output of the specific color-adjusting stage and an output of the total color-adjusting stage. When a degree that the total color-adjusting stage adjusts the data of the inputted color increases, then a degree that the specific color-adjusting stage adjusts the data of the inputted color decreases, and vice versa.

Abstract: A characteristic value-calculating unit, calculating a characteristic value based on an input image signal, a conversion characteristic-calculating unit, determining a conversion characteristic from the characteristic value, and a signal-converting unit, converting the input image signals in accordance with the determined conversion characteristic, are provided. The conversion characteristic has a low level region segment, which is close to the origin, a high level region segment, which is close to a full scale point, and a middle level region segment, which is positioned between the low level region and high level region, and the slope in the middle level region is set so as to be larger than both of the slopes of the low level region and the high level region.

Abstract: A display controller including a video signal-analyzing unit, a video signal-adjusting unit operable to receive a video signal, to adjust the video signal in accordance with adjustment parameter information, and to feed the adjusted video signal into a display device, and a light source-controlling unit operable to feed a light source-controlling signal into a light source in accordance with light source light-emitting amount information. The video signal-analyzing unit allows timing in which the display device displays a picture in accordance with the adjusted video signal from the video signal-adjusting unit to be synchronized with timing in which the light source changes a light-emitting amount in response to the light source-controlling signal from the light source-controlling unit.

Abstract: There is provided a correlation between adjustment of luminance of a LCD and adjustment of luminance of a backlight. Luminance average value “Iave” is determined from display data. Luminance maximum value “I1max” in a macro area is determined from the display data. Luminance is adjusted with reference to luminance-transformed luminance. In luminance transformation, slope average “r1” in a range of 0≦I<Iave, slope average “r2” in a range of Iave≦I<I1max, and slope average “r3” in a range of I≧I1max establish a relationship of r1≧r2>r3 in an area defined by a horizontal axis showing luminance “I” and a vertical axis showing luminance-transformed luminance “I#”.

Abstract: A fold-up mobile terminal device comprising a lower case having a key operating portion, an upper case having a display portion, a coupling portion which makes the lower case and upper case rotatable, and a turnover preventing portion. The turnover preventing portion is attached to the rear of the upper case, which is the direction where a turnover is most likely to occur, in a direction approximately the same as that of a supporting surface of the lower case.

Abstract: An apparatus for embedding information in a signal includes a band dividing device, a block divider, a quantization portion, a signal replacement portion, a mean difference addition portion, a mean calculation portion, and a band synthesis portion. The band dividing device divides the signal into transform coefficients over a plurality of frequency bands. The block divider divides one frequency band into a plurality of blocks in accordance with a previously determined block size. The quantization portion calculates for each block, a mean value M of the transform coefficients in the block, and subjects the mean value M to linear quantization, using a previously determined quantization step-size Q to calculate a quantization value. The signal replacement portion replaces the quantization value for each block, on the basis of the quantization value and the value of the information to be embedded.

Abstract: An apparatus for embedding information in a signal includes a band dividing device, a block divider, a quantization portion, a signal replacement portion, a mean difference addition portion, a mean calculation portion, and a band synthesis portion. The band dividing device divides the signal into transform coefficients over a plurality of frequency bands. The block divider divides one frequency band into a plurality of blocks in accordance with a previously determined block size. The quantization portion calculates for each block, a mean value M of the transform coefficients in the block, and subjects the mean value M to linear quantization, using a previously determined quantization step-size Q to calculate a quantization value. The signal replacement portion replaces the quantization value for each block, on the basis of the quantization value and the value of the information to be embedded.

Abstract: A stored image is delivered via a network in response to requests from receiving terminals. Information concerning the color properties of the receiving terminals is acquired, and, based on the acquired information, the stored image is color-converted into images in accordance with the color properties of each receiving terminal. The color-converted stored images are the delivered. An output profile for each receiving terminal is used to improve color reproductivity.

Abstract: Picture quality on a display screen is corrected in accordance with a change either in image information or in the light state. The electronic apparatus includes a display panel, a lighting means for lighting the display panel, a parameter adjusting means for adjusting a parameter participating in picture quality so as to conform the light state while using variations in the light state of the lighting means as a trigger, a signal correcting means for inputting a display signal and correcting the input display signal in accordance with the adjusted parameter, and a driving means for driving the display panel on the basis of the corrected display signal. The light state is controlled according to the content of a file containing the information to be displayed.

Abstract: A pseudo-tone processing means color-reduces each RGB component of incoming display data using pseudo-tone processing. A frame memory stores the color-reduced display data before feeding h to a display through a drive means. Color reduction is performed so that the tone number of each RGB component after color reduction is G component>R component>B component. Color reduction is unequally performed in a manner which reflects contributions of each RGB component to brightness.