Abstract: In the present invention, image data from an image input device, including differences of tone levels of picture elements constituting these image data from surrounding picture elements, are figured out and the distribution of these differences of tone levels is prepared. Then, integrated processing, based on this distribution, makes it possible to determine whether each picture element is an edge picture element, a moiré picture element or an intermediate picture element. According to the determination, a sharpening filter is applied if the picture elements are edge picture elements, a smoothing filter is applied if they are moiré picture elements, or the tones of the original image are held if they are intermediate picture elements. This way of image data retouching makes it possible to carry out the whole execution from determination to retouching in a serial process.

Abstract: Background removal processing applies image processing indiscriminately to the whole image on the basis of an assumed presence of a background. Therefore, if the input image has a background and the luminance tone level of this background is relatively low, the background area cannot be removed. It is made possible to scan a document with a color scanner 40 and determine a blank paper area constituting the background of the document image, i.e. a substantially white area, according to a prescribed frequency distribution of image data constituting the image. It is further made possible to provide clear contrast between the background of the image reproduced from image data and the non-background part of the image and to remove noise components appearing on the background, such as what is written or drawn on the wrong side of paper seen through, because, once the presence of a background is determined, the substantially white background area is retouched to white, i.e.

Abstract: An electro-optical device includes a plurality of sub-pixels two-dimensionally arranged in a row direction of a display region and in a column direction thereof orthogonal to the row direction. Each group of five sub-pixels constitutes a display pixel, including three sub-pixels that are arranged in the row direction and two sub-pixels that are adjacent to the three sub-pixels in the column direction, the sub-pixels in one display pixel outputting different color light components, and the display pixels are arranged two-dimensionally in a substantially honeycomb shape.

Abstract: To provide a display device with an excellent image representation capability, which is capable of vividly reproducing colors existing in nature. A display device according to the present invention performs color reproduction by additive color mixture of four primary colored light components consisting of Red, Green, Blue, and Cyan, wherein in an xy-chromaticity diagram, the coordinate of Red is x?0.643 (y is optional), Green is y?0.606 (x is optional), Blue is y?0.056 (x is optional), and Cyan is x?0.164 (y is optional). In addition, in a u?v?-chromaticity diagram, the coordinate of Red is u??0.450 (v? is optional), Green is v??0.569 (u? is optional), Blue is v??0.149 (u? is optional), and Cyan is u??0.076 (v? is optional).

Abstract: The present invention provides a display device and an electronic apparatus which are capable of realizing a remarkably wide range of color reproduction and displaying an image with display colors in a wide wavelength region which is similar to that of natural light and which are capable of minimizing the increased manufacturing cost caused by the increased number of coloring units in a unit pixel.

Abstract: To provide a display device, a color filter, and an electronic apparatus, which can prevent the deterioration of resolution and display quality and can improve display characteristics. There is provided a display device comprising a plurality of dots in a unit pixel. The dots includes first to third dots having first to third peak wavelengths in the wavelength characteristics of emitted light, and a fourth dot having a fourth peak wavelength which is located between the first peak wavelength and the second peak wavelength, and has the fourth peak wavelength which is closer to the second peak wavelength than to the first peak wavelength, in the wavelength characteristics. The fourth dot is arranged not to be adjacent to the second dot, but is arranged to be adjacent to the first dot or the third dot.

Abstract: Aspects of the invention relate to a method of processing images capable of performing natural saturation enhancement having a balance between color components with a small amount of calculation is provided. The image processing device may be arranged in an image display device or may be a device for providing display image data to the external image display device to perform the saturation enhancement of the input image data. Specifically, saturation information can be extracted from the input image data to determine a saturation enhancement amount. In addition, a color component to which the saturation enhancement is performed can be extracted from the input image data. Further, based on the determined saturation enhancement amount, the saturation enhancement for each color component can be performed. Here, for the predetermined color component, the saturation is enhanced after the saturation enhancement amount is adjusted.

Abstract: The invention provides an image processing device capable of reducing flickering on a screen by simplifying the structure of an image processing device. The image processing device can include a statistical value calculating unit, a correction parameter calculating unit, and an image correcting unit. The statistical value calculating unit can generate statistical value data. The correction parameter calculating unit generates a control signal in accordance with the degree of change in the scene thereby generating a correction parameter by using a low pass filter whose time constant changes based on the control signal and equalizing the statistical value data. A look-up table can then be generated based on the correction parameter.

Abstract: The invention provides an image processing device that reduces flickering on a screen by simplifying the structure of an image processing device. The image processing device can include a statistical value calculating unit, a correction parameter calculating unit, and an image correcting unit. The statistical value calculating unit can generate statistical value data. The correction parameter calculating unit equalizes the statistical value data using the low pass filter whose time constant changes according to whether change occurs in the scene, thereby generating the correction parameter. A look-up table is generated based on the correction parameter.

Abstract: The present invention provides an image processing device that does not convert image data into a grayscale value which may cause defects in the displayed images, such as flickering or fluctuation, when performing color reduction/pseudo-halftone processing to convert the data into data which can be displayed on the color LCD panel (20). Alternatively, the frequency of occurrence of such a grayscale value can be reduced. The present invention thereby prevents a decrease in the display quality of an image output apparatus in advance by processing data supplied to the image output apparatus, such as a color LCD panel.