Abstract: An image pickup apparatus including a chromatic aberration of magnification correction device to correct chromatic aberration of magnification of an image by converting coordinates of pixel data of multiple color components of the image using multiple first coordinate conversion memories corresponding to the multiple color components and a distortion correction device to correct distortion of the image corrected with regard to the chromatic aberration of magnification by converting coordinates of the pixel data of multiple color components of the image at one time using a second coordinate conversion memory shared by the multiple color components.

Abstract: There is provided an image processing method configured to process an image captured by using an optical system with a wide view angle and a large magnification chromatic aberration, wherein a magnification chromatic aberration correction is conducted by conducting no coordinate transformation for an image of a particular color component while conducting a coordinate transformation for only an image of a color component except the particular color component. There is also provided an image processing device configured to process an image captured by using an optical system with a wide view angle and a magnification chromatic aberration, including a magnification chromatic aberration correction device configured to conduct a magnification chromatic aberration correction by conducting no coordinate transformation for an image of a particular color component while conducting a coordinate transformation for only an image of a color component except the particular color component.

Abstract: An image processing apparatus includes: a difference calculation unit that calculates a difference value of a feature amount of image data of a predetermined region between a present frame and a past frame; a first counting unit that counts number of times when an absolute value of the difference value exceeds a threshold during a predetermined period of time; a second counting unit that counts number of times when the difference value of the image data have different plus-minus signs between a present frame and a past frame during a predetermined period of time; and an identification unit that identifies a light source frequency by comparing the output of the second counting unit with a predetermined value when the output of the first counting unit exceeds a predetermined value.

Abstract: An imaging element includes a light receiving surface having pixels, and a low-pass filter device configured to focus predetermined light on a predetermined pixel of the pixels of the light-receiving surface.

Abstract: An image processing apparatus includes a line buffer, an FIR filter serving as an edge enhancement filter that enhances high-frequency components of an image, and an IIR filter serving as a low-pass filter that reduces noise. The same line buffer is used by both the FIR filter and the IIR filter. According to a switching signal, switches enable the FIR filter and disable the IIR filter for a relatively low noise level while the switches enable IIR filter and disable the FIR filter for a relatively high noise level.

Abstract: An image processing apparatus that includes an edge-enhancement filter that enhances sharpness of an image is provided. The edge-enhancement filter includes distance calculators that calculate values of a distance between a target pixel and an optical center of a captured image in two or more axial directions, edge detection filters that detect edge amounts in two directions, multipliers that multiplies each of the edge amounts detected by the edge detection filters by one of the distance values of a corresponding one of the axial directions, a first adder that adds outputs of the multipliers together, and a second adder that adds a pixel value of the target pixel and an output of the first adder. A coring unit can be interposed between the first adder and the second adder if necessary.

Abstract: A photoelectric conversion element includes a plurality of light receiving portions. A color filter is provided on a light receiving surface of the photoelectric conversion element with filters for red, green, and blue arranged corresponding to the light receiving portions, such that R, G, and B pixels including the light receiving portions and the filters are arranged in a two-dimensional array. A transfer unit transfers a light in a wavelength range other than lights of green and blue incident on the G pixel and a light in a wavelength range other than lights of blue and green incident on the B pixel to a neighboring R pixel.

Abstract: An image projecting apparatus enables the formation of a projected image faithful to original image information by reducing degradation in the projected image due to decrease in imaging performance of a projection optical system. Image information is processed by an image processing device, which includes a first and a second image processor. A light modulating device modulates a flux of light emitted by an illumination optical system based on the processed image information. The modulated flux of light is projected on a screen by a projection optical system. If the image information processed by the first image processor in a pixel region is not within a representable modulation range of the light modulating device, the image information is processed by the second image processor.

Abstract: An imaging apparatus, including an optical system forming an image of an optical image of an object; an imaging element imaging the optical image and producing image data at a frame frequency Ffs out of a frame frequency Ffr of NTSC system; a frame memory storing the image data; and a controller progressively writing the image data in the frame memory and interlacedly reading out the image data from the frame memory at the frame frequency Ffr of NTSC system. The frame memory is divided into at least three areas comprising a writing-in area and a read-out area, wherein the controller sequentially switches the areas of the frame memory and progressively writes one frame of image data in each area and interlacedly reads out one frame of image data from each area in sequence.

Abstract: An image processing device includes a memory interface to read out image data from a memory, and a memory access controller to control reading process of the memory interface so as to keep a number of pixels in a main scanning direction of the image data read out from the memory smaller than a number of pixels in a main scanning direction of a screen to which the image data is output.

Abstract: A data readout method is disclosed that is able to read data from an optical disk capable of super resolution readout with high accuracy. The data readout method allows reading data recorded in an optical disk by irradiating a laser beam onto the optical disk. The method includes the steps of varying a light emission power level of the laser beam while the laser beam is irradiated onto the optical disk, and acquiring a reflectivity of the optical disk corresponding to each light emission power level; calculating a second derivative of a curve representing correlation between the reflectivity and the light emission power with respect to the light emission power; calculating an extreme value of the second derivative; and calculating an optimum readout power level for super resolution readout based on the extreme value.

Abstract: When it is estimated that first average brightness of image information of a projection image is under second average brightness of image information of a source image having a single spatial frequency on which a normal compensation is performed, an area having brightness above the second average brightness in the image information of the projection image is increased, and when it is estimated that the first average brightness is above the second average brightness, an area having brightness under the second average brightness in the image information of the projection image is increased.

Abstract: A data reproduction apparatus for reproducing recorded data from an optical disk by using a PRML detection method is disclosed that includes an optical head including a light source, an optical system having an objective lens for condensing light emitted from the light source to the optical disk, and a photodetector for receiving light reflected from the optical disk, a signal generation circuit for generating an RF signal from a signal output from the photodetector, a phase correction circuit for correcting phase distortion of the RF signal when the recorded data are recorded in recording marks arranged with a pitch less than a diffraction limit, a clock extraction circuit for extracting a clock from the corrected RF signal, and a decoding circuit for decoding the recorded data from the RF signal in synchronization with the clock extracted by the clock extraction circuit.

Abstract: An image adjusting device for an on-vehicle camera mounted on a vehicle includes an operations unit configured to input mounting position information regarding a mounting position of the on-vehicle camera on the vehicle; a storing unit configured to store image processing parameters in association with various mounting positions of the on-vehicle camera; a control unit configured to read the corresponding image processing parameters from the storing unit based on the mounting position information input from the operations unit; and an image processing unit configured to process image data obtained by an imaging unit of the on-vehicle camera according to the image processing parameters read by the control unit.

Abstract: A wide-angle lens is disclosed that includes a front lens group and a rear lens group that are arranged in order from an object side to an image side with an aperture being arranged between the front lens group and the rear lens group. The front lens group includes at least two lenses arranged toward the object side that have negative powers, and at least one lens arranged toward the image side that has a positive power. The rear lens group includes at least one lens having a positive power. One of the lenses of the front lens group arranged second in order from the object side has a lens face that is arranged into an aspheric surface. The front lens group, the aperture, and the rear lens group make up an image forming system having an angle of view greater than 180 degrees.

Abstract: An imaging device includes an imaging element that takes an image of a target object and output an image signal corresponding to the image; a storage unit that stores therein a zero-point adjustment reference value; a brightness detecting unit that detects a brightness of the target object; and a reference-value changing unit that changes the zero-point adjustment reference value when the brightness detected by the brightness detecting unit is equal to or lower than a threshold. A zero point in a level of the image signal output from the imaging element is adjusted by using the zero-point adjustment reference value stored in the storage unit.

Abstract: A photoelectric conversion element includes a plurality of light receiving portions. A color filter is provided on a light receiving surface of the photoelectric conversion element with filters for red, green, and blue arranged corresponding to the light receiving portions, such that R, G, and B pixels including the light receiving portions and the filters are arranged in a two-dimensional array. A transfer unit transfers a light in a wavelength range other than lights of green and blue incident on the G pixel and a light in a wavelength range other than lights of blue and green incident on the B pixel to a neighboring R pixel.

Abstract: An imaging device includes a color filter having a predetermined color array and converts an optical image into image data of an electrical signal. A coordinate transforming unit transforms a first coordinate value of the imaging device into a second coordinate value in a state of the color array according to a color of the color filter corresponding to the first coordinate value. The imaging device reads out a pixel value of a pixel at the second coordinate value as a pixel value of a pixel at the first coordinate value by setting the first coordinate value as a coordinate transform destination and the second coordinate value as a coordinate transform source.

Abstract: A projector projecting an image on an object by scanning the object with a light beam includes a light source; a divergence angle converter converting the divergence angle of the light beam; a light deflector deflecting the light beam in a light beam scanning direction and a direction perpendicular to the light beam scanning direction; alight deflector drive controller controlling the light deflector to form the focused light spots at the respective pixel positions of the object on the basis of positional data for the pixels; a light amount controller controlling light amount of the light beam on the basis of luminance data for the pixels; and an image processor correcting the luminance data on the basis of previously obtained deterioration data of the projected image and outputting the corrected luminance data to the light amount controller while outputting the positional data to the light deflector drive controller.

Abstract: A disclosed imaging apparatus includes a wide-angle optical system having at least chromatic aberration of magnification; an imaging device including color filters and configured to receive an optical image from the optical system via the color filters and to convert the optical image into image data; and a chromatic aberration of magnification correcting unit configured to convert coordinates of the image data and thereby correct chromatic aberration of magnification of the image data. The chromatic aberration of magnification correcting unit is configured to convert the image data into different-wavelength image data having wavelength bands different from original wavelength bands of the color filters before correcting the chromatic aberration of magnification.