Eastman-kodak Company

Nittoh Kogaku K.k.

Nitto Kogaku Kk

Takanori Miki

Fuminori Takahashi

Junzou Sakurai

Hiroaki Komatsu

Masami Haino

Kazunobu Takahashi

To improve sensitivity by adding pixels, and improve precision of pixel interpolation in an imaging device. An imaging device is provided in which pixels are added along a horizontal direction or a vertical direction to improve sensitivity of an imaging element. An R pixel signal, a G pixel signal, and a B pixel signal in which pixels are added, for example, along the vertical direction are output from a CCD (). A CFA interpolation unit () interpolates the G pixel signal using an adjacent pixel along the horizontal direction. The CFA interpolation unit () also interpolates the R pixel signal and the B pixel signal along the horizontal direction using an adjacent pixel along the horizontal direction and interpolates along the vertical direction using correlation of the interpolated G pixel.

Imaging device

An image processing apparatus is provided which performs image restoration as necessary while a computing processing burden based on an image restoration algorithm is reduced. RAW data of a blurred image is input to an RGB interpolation section. The RGB interpolation section generates an R component image, a G component image, and a B component image based on the RAW data. The G component image is input to an image restoration processing section and the R and B component images are input to an RGB to YCC section. The image restoration processing section performs an image restoration process based on a predetermined image restoration algorithm by using a PSF image representing a predetermined point spread function. The RGB to YCC section generates a brightness component image Y and color difference component images CR and CB based on the G component image having been subjected to the image restoration process and the R and B component images which was not subjected to any image restoration process.

Image processing apparatus and image restoration method and program

An error in a camera having angular velocity sensors is eliminated. A camera is placed on a rotating table and rotated, angular velocities are detected by angular velocity sensors, and a CZP chart is photographed. The motion of the camera is computed as a locus of motion of a point light source on an imaging plane from the outputs from the angular velocity sensors. The inclination of the locus motion is compared with the inclination of a zero-crossing line which has been obtained by subjecting the photographed image to Fourier transformation, to thus compute angles of relative inclination of the angular velocity sensors with respect to the image sensor. Further, when no coincidence exists between the zero-crossing line of the data into which a PSF has been Fourier-transformed and a zero-crossing line of the data into which a photographed image has been Fourier-transformed, a computer computes a correction coefficient from a proportion of an interval between the zero-crossing lines, on condition that an error is included in the angular velocity sensors or the focal length of a photographing lens, and the error is eliminated.

Method for eliminating error in camera having angular velocity detection system

Apparatus includes a change operator for detecting change factor information which causes the deterioration in the image; an iterative processing operator which iterates a processing cycle comprising; a first processing step to apply a first calculation to a first image utilizing the change factor information to generate a second image, calculating difference data between the deteriorated image and the second image; a second processing step to apply a second calculation to the second image utilizing the difference data to generate a third image; and a replacing step to replace the first image with the third image; wherein the processing cycle further includes (a) detecting whether a coincidence exists between the sign of a first difference data and the sign of a second difference data or not, and (b) increasing an absolute value of the difference data utilized in the second processing step when the coincidence is detected in step (a).

Image processing apparatus

An image deteriorated by camera shake, or the like, is restored in a short period of time. A &#x2207;J computation section computes an evaluation value J from a deteriorated image G captured by means of photographing, a restored image F, and a PSF computed from an angular velocity detected by an angular velocity sensor, and further computes &#x2207;J. When the square of norm of &#x2207;J exceeds a threshold value, there is iterated processing for computing a new, restored image F by means of subtracting &#x3b5;&#xb7;&#x2207;J from the restored image F. A convergence parameter computation section sets the convergence parameter &#x3b5; as a value which first shows an increase and subsequently a decrease depending on the number of iterations, thereby increasing the speed of convergence and inhibiting divergence.

Image-processing system and image-processing program

There is provided a technique of preventing occurrence of a shift in white balance even when the ratio of a dark area is greater than the ratio of a bright area as in the case of a night view. A white balance gain calculator calculates white balance gains for an image from color of pixels whose luminance levels are at equal to or greater than a reference luminance level among all pixels of an image. When the ratio of dark pixels whose luminance satisfies a predetermined condition, among all pixels of the image, is equal to or greater than a reference ratio, a correction coefficient calculating section determines a correction coefficient from at least one of factors; namely, image-capturing sensitivity corresponding to an image, the ratio of dark pixels, and firing/non-firing of flash light; and instructs the white balance gain calculator to make a correction to the white balance gain in accordance with the correction coefficient.

Image capturing apparatus and white balance processing apparatus

Accurately suppress chromatic aberration arising in a subject image is described. An image signal, which is obtained by a lens and a CCD and pertains to a subject image, is subjected to white balance adjustment performed by a white balance adjustment circuit. The signal is supplied to a color-blurring detection circuit before undergoing gamma correction. The color-blurring detection circuit has a low slice circuit, a high-pass filter, and a high clip circuit; detects an edge portion of a highlight of a G signal constituting the image signal; and supplies the detected edge portion as a color-blurring detection signal to a color-blurring suppressor circuit disposed subsequent to a &#x3b3; correction circuit. The color-blurring suppressor circuit corrects color-difference signals CB, CR, which have been subjected to gamma correction, by use of the color-blurring detection signal, thereby suppressing the color-blurring having arisen in the edge of a highlight of the image.

Imaging device having chromatic aberration suppression

The present invention is directed to improving the accuracy of white balance adjustment. An image input from an image capture deviceis divided into blocks, and white balance gains are calculated from a representative value of each block. Prior to calculation of the representative value of each block, a color range determining circuitdetermines whether each pixel included in each block belongs to a light source color range, or belongs to an apparent object color range. A representative value of that block is calculated from remaining pixels other than pixels determined to belong to the apparent object color range. Thus, by preventing the representative value from being affected by an object color, the accuracy of white balance gains is improved.

Growing community of inventors

Kanagawa, Japan

Takanori Miki