Abstract: A video display apparatus generates luminance information for individual frames of a video signal from histograms of the luminance component of the video signal, and classifies the content of the video signal on the basis of this information. Color saturation information is also generated from color saturation histograms, and scene changes are detected. Video correction parameters and display control parameters are derived from the content classification and color saturation information. The video signal is corrected according to the video correction parameters, and displayed according to the display control parameters. Display characteristics suitable for the video content are thereby obtained. The parameters are changed when a scene change is detected, so that the viewer is not disturbed by the change in video display characteristics.

Abstract: It is one object of the present invention to provide a program writing method of numerical controller, a numerical controller and a cutting machine controlled thereby achieving to write a plurality of programs relating to one axis to perform a high efficiency in the small lot of productions. A next or later user-set-program controlling a duplicated axis controlled by plural user set programs identifies a virtual axis virtually controlled by own user set program, a program is written to replace the duplicated axis to the virtual axis. A control amount calculated by the user set program identifying the virtual axis is added to a control amount input to a correspondent axis driving program as a control amount of duplicated axis before replacing to the virtual axis.

Abstract: In tetrahedral interpolation suitable for data conversion implemented by digital computations, when the unit rectangular hexahedron is a regular hexahedron, no complicated multiplication is required, and the computation volume can be greatly reduced. However, when the unit rectangular hexahedron is not a regular hexahedron, since a complicated multiplication is required, the computation volume increases considerably. To avoid this, after the grid spacing is set (S1), X-u?, Y-v?, and Z-w? tables for obtaining the positions of an input value with respect to normalized grid points are prepared (S2-S4). Subsequently, image data is input (S5), and u?, v?, and w? corresponding to the input image data are obtained using the prepared tables (S6). The relationship among u?, v?, and w? is determined (S7), and data-converted image data is calculated using an equation corresponding to the determination result (S8).

Abstract: A machining apparatus, in which a plurality of user set programs in relation to one axis is written and the amount of the infeed motion of the grinding wheel is increased to restrain the change of the load of the grinding wheel, improves a machining accuracy and achieve a longer life of the grinding wheel.

Abstract: A light diffusion element includes a light diffusion layer that contains at least two types of liquid crystal molecules each having a different light scattering characteristic defined by a voltage and a refractive index. A pair of electrodes sandwiches the light diffusion layer, an applying unit generates and applies a variable voltage to the pair of electrodes, and a voltage changing unit varies the voltage generated by the applying unit. The voltage changing unit varies the voltage such that each of the refractive indexes of the liquid crystal molecules in the light diffusion layer changes temporally.

Abstract: The present invention provides a control device capable of improving hysteresis characteristics of a voice coil motor (31) and attaining a suitable lens position without complicating the structure of the control device. As solving means of the invention, a voice coil motor control device (30) includes a driving current control part (34) that controls a driving current supplied to the voice coil motor (31) in accordance with a driving pulse subjected to pulse width modulation, and a driving pulse control part (32) that divides a drive period of the voice coil motor (31) into a movement period and a holding period, and controls the driving pulse by changing the duty ratio of the driving pulse during the movement period in accordance with a duty setting value and fixing the duty ratio of the driving pulse during the holding period to the duty setting value.

Abstract: An image processing apparatus processes an input color image, combines the input color image with the processed color image in a ratio that varies from picture element to picture element according to the hue of the picture element, and outputs the combined image. The output image can accordingly be selectively processed to give desired qualities in suitable degrees to particular hues.

Abstract: A field sequential color display is obtained by successive display of a sequence of monochrome images of different colors. Monochrome images in at least one of the colors are displayed with light of two different brightness levels, the light of the lower brightness being used to display comparatively low gray levels, the light of both the lower and higher brightness levels being used to display comparatively high gray levels. This scheme provides extra resolution at the low end of the gray scale, and increases the number of displayable gray levels by counteracting the loss of gray levels that occurs due to gamma correction.

Abstract: An image processing device includes a first calculation means for calculating a non-capture color signal corresponding to an H-th interpolation color for a pixel of interest, a second calculation means for calculating a non-capture color signal by multiplying a J-th capture color signal corresponding to the capture color for the pixel of interest by the ratio of the H-th two-dimensional low-pass filter output to the J-th two-dimensional low-pass filter output, and a third calculation means for calculating a non-capture color signal corresponding to the H-th interpolation color for the pixel of interest using the calculation result according to the first calculation means and the calculation result according to the second calculation means.

Abstract: An imaging system controller (5) outputs a control signal (VC). The control signal (VC) gives a command to output driving clocks (?Vn, ?Hm) of an imaging element (1) in a signal transmission period, and a command to suspend output of the clocks (?Vn, ?Hm) in an idle period subsequent to the signal transmission period. The length of the idle period is a multiple of the length of the signal transmission period by a natural number. The imaging system controller (5) periodically repeats output of the control signal (VC) giving these commands a number of times corresponding to the number of horizontal lines of the imaging element (1). In response to the commands of the control signal (VC), a timing generator (2) generates and outputs the clocks (?Vn, ?Hm), and suspends generation and output of the same. An imaging device (10) thereby intermittently drives the imaging element (1), to generate and output a picked-up image signal (V2).

Abstract: An image display apparatus includes a light source for emitting a plurality of light beams arranged in a direction corresponding to a sub-scanning direction, a light source driver for individually modulating intensities of the plurality of light beams; a light scanning unit for performing main scanning and sub-scanning; an image display screen for receiving the plurality of light beams scanned in the main and sub-scanning directions; and a controller, wherein, in one frame period, a distance of movement of the light irradiation positions on the image display screen moved by one sub-scanning is a distance obtained by multiplying an interval between adjacent two scanning lines in the sub-scanning direction on the image display screen by a predetermined integer which is an integer smaller than number of the plurality of light beams arranged in the direction corresponding to the sub-scanning direction.

Abstract: A field sequential color display is obtained by successive display of a sequence of monochromatic images. Each monochromatic image is displayed with light occupying a different wavelength region, but one of the wavelength regions includes part or all of another one of the wavelength regions. These two wavelength regions are used to display one of the original primary colors of the color image, the included or partially included wavelength region being used for comparatively low gray levels and both wavelength regions being used for comparatively high gray levels. This scheme provides a way to increase the number of gray levels that can be displayed following a gamma correction, as well as broadening the gamut of reproducible colors.

Abstract: With this invention, compatibility between an image forming apparatus and a component mounted on the image forming apparatus is precisely checked. A cartridge as the component stores its ID (first information) and an ID (second information) of the image forming apparatus that can use the cartridge. The image forming apparatus stores its ID (third information) and an ID (fourth information) of the cartridge that can be used in the image forming apparatus. Then, when the fourth information includes the first information or the second information includes the third information, it is decided that the cartridge mounted in the image forming apparatus can be used. When the fourth information does not include the first information and the second information does not include the third information, it is decided that the cartridge mounted in the image forming apparatus cannot be used.

Abstract: In an image processing device and image processing method in which first image data consisting of a plurality of color data and constituting image information for each pixel are input, and second image data consisting of a plurality of color data are calculated and output, after color conversion of the first image data, dither processing is applied to produce the second image data. As a result, information of the fractional part generated as a result of the color conversion is not omitted but preserved. Tone conversion may be performed after the color conversion, and before the dither processing. The image processing device or image processing method can restrain reduction in the number of colors that can be expressed, and restrain the generation of discontinuities (irregularities) in the change of data, while realizing an “exact color reproduction” or “preferred color reproduction.

Abstract: An image display device and an image display method are provided so as to suppress consumption power and provide a more brightly colored display image. The image display device is provided with a light modulating means wherein image data is inputted and an image is formed by modulating light from a light source based on the image data. The image display device is also provided with a color information detecting means for detecting a quantity of a chromatic color component of an image expressed by the image data; a light source control data generating means for generating light source control data for controlling brightness of the light source; and a light source control means for controlling the brightness of the light source based on the light source control data.

Abstract: An image display projector and a method of displaying images are provided so as to enable reducing the occurrence of scintillation. The image display projector comprises: an optical engine for emitting light according to an inputted imaging signal; a Fresnel lens disposed to receive the light emitted from the optical engine, for emitting the incident light as collimated one; a diffusion member, placed in a position frontal to the Fresnel lens in the light-traveling direction, for emitting diffused light, by diffusing the collimated light emitted from the Fresnel lens; and a drive unit for moving either the Fresnel lens or the diffusion member, along a predetermined track (orbit), in a plane parallel to either the one from which the collimated light is emitted or the one from which the diffused light is emitted. And then, the moving velocity of either the Fresnel lens or the diffusion member is at any moment larger than zero in any direction within the parallel plane.

Abstract: This invention relates to a conversion table compression method of compressing a conversion table and storing the conversion table in a storage medium, including an axial difference creating step of creating an axial difference table by calculating, from data stored in the conversion table, the difference values between grid points adjacent in predetermined directions along a plurality of axes which define the input space of the conversion table, a compressing step of compressing the axial difference table to create compressed data, and a storing step of storing the compressed data in a recording medium.

Abstract: A driving assist apparatus obtains image data from a camera mounted on a vehicle and stores the image data in an image memory. The driving assist apparatus further obtains a relative distance between the vehicle and an obstacle on the basis of input from a sonar device mounted on the vehicle, generates a projection plane on the basis of the relative distance between the vehicle and the detected obstacle, and projects the stored image data onto a plane to generate an overhead image.

Abstract: A field-sequential display apparatus having a light source that emits light of different colors in different subframes of an image controls the spectral distribution of the light emitted in each subframe according to characteristics of the input image data, or to ambient conditions or other user-specified conditions. The input image data are processed so that image colors are displayed correctly despite changes in the spectral distribution of the light-source colors. This scheme enables the gamut of reproducible colors to be altered from frame to frame to provide an appropriate balance between brightness and color saturation in each frame, and to compensate for ambient lighting conditions.

Abstract: A regression analysis is carried out (8) using pixel signals having a K-th spectral characteristic as the explanatory variable and pixel signals having an L-th spectral characteristic as the purpose variable in a plurality of pixel positions in an area neighboring a pixel of interest to obtain a pixel signal having the L-th spectral characteristic (9). Pixel signals obtained by low-pass filtering (7a-7c) of the output signals of an imaging device may be used as the explanatory variable and the purpose variable. The occurrence of false colors is thereby reduced when, in a group of pixel signals from pixels arrayed on a two-dimensional plane, each pixel having one of a plurality of spectral characteristics, the missing colors at each pixel position are obtained by interpolation.