Eastman-kodak Company

Nittoh Kogaku K.k.

Nitto Kogaku Kk

Hiroaki Komatsu

Takanori Miki

Fuminori Takahashi

Masami Haino

Junzou Sakurai

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

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.

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Nagano, Japan

Hiroaki Komatsu