49results about How to "Correcting blurring" patented technology

A method and apparatus of correcting blur in a motion blurred image includes estimating the direction of blur in the motion blurred image based on edge response of the motion blurred image over a set of discrete directions and over subgroups of the discrete directions. The extent of blur in the motion blurred image is also estimated. An initial guess image based on the motion blurred image is generated and the guess image is blurred as a function of the estimated blur direction and blur extent. The blurred guess image is compared with the motion blurred image to generate an error image. The error image is blurred and weighted and then combined with the initial guess image thereby to update the guess image and correct for blur.

A method and apparatus of correcting blur in a motion blurred image includes estimating the direction of blur in the motion blurred image based on edge response of the motion blurred image over a set of discrete directions and over subgroups of the discrete directions. The extent of blur in the motion blurred image is also estimated. An initial guess image based on the motion blurred image is generated and the guess image is blurred as a function of the estimated blur direction and blur extent. The blurred guess image is compared with the motion blurred image to generate an error image. The error image is blurred and weighted and then combined with the initial guess image thereby to update the guess image and correct for blur.

The present invention relates to a prediction coefficient computing device and method, an image data computing device and method, a program, and a recording medium which make it possible to accurately correct blurring of an image. A blur adding unit 11 adds blur to parent image data on the basis of blur data of a blur model to generate student image data. A tap constructing unit 17 constructs an image prediction tap from the student image data. A prediction coefficient computing unit 18 computes a prediction coefficient for generating image data corresponding to the parent image data, from image data corresponding to the student image data, on the basis of the parent image data and the image prediction tap. The present invention can be applied to an image processing device.

The invention provides an image pickup apparatus with a blur correcting unit which has a display function of causing a photographer to easily confirm a photographed image. The image pickup apparatus includes photographing lens which forms an object image, a photoelectric conversion unit which is disposed on a predicted image plane of the photographing lens, a display unit which displays a photographed image obtained by the photoelectric conversion unit, an image display control unit which displays the photographed image by the display unit after the photographed image is obtained by the photoelectric conversion unit, a distance information acquiring unit which obtains distance information in the photographed image, and a blur correcting unit which performs blur correction on the photographed image based on the distance information obtained by the distance information acquiring unit. The image display control unit displays the photographed image where plural distances in the photographed image are focused.

A vibration gyro sensor is provided which is capable of generating time information and detecting an angular velocity. A driving signal for driving a tuning fork piezoelectric vibrating reed is generated based on an excitation signal generated by an oscillation circuit. An angular velocity signal is obtained based on a detection signal generated by a detection electrode of the tuning fork piezoelectric vibration reed. The excitation signal generated by the oscillation circuit is input to a divider such that a timer clock signal is generated.

A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.

A plurality of image capturing data time-divisionally exposed by a capturing unit are input, and are divided into synthesis images or motion detection images. A motion amount of the capturing unit at the time of time-division exposure is detected from the image capturing data of the motion detection images, and synthesized image capturing data is generated by synthesizing the synthesis images. Then, a vibration of the synthesized image capturing data is corrected based on a divide pattern indicating divisions, and the motion amount.

A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.

A zoom lens having at least a first lens group including a reflection member for bending an optical axis fixedly during zooming and having a negative refractive power, a second lens group having a negative refractive power, and a third lens group arranged in the order from an object side is provided. In the zoom lens, an image can be shifted into a direction perpendicular to the optical axis by moving either of the second and the third lens groups (“shift lens group”) in a direction perpendicular to the optical axis, and a following conditional expression (1) is satisfied,0.5<(1−βα)×βb<3.0,  (1)where:βα: a magnification of the shift lens group in a maximum telephoto state, andβb: a magnification of a lens group arranged on an image surface side of the shift lens group in the maximum telephoto state.

A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.

An offset corresponding to an amount of geometric deformation is added to an amount of drive of an optical member due to an optical image shake correction so that the center of a reference area necessary for geometric deformation processing comes closer to the center of an imaging area. Because of this, a possibility is increased that a reference area necessary for geometric deformation processing is fully contained in an imaging area, and blurring of an image due to a motion of an image capture apparatus is effectively corrected by combining an optical image shake correction and a geometric deformation process.

An image processing apparatus for correcting an input image for blur using a recovery filter in accordance with image blurriness includes a blurriness determining unit that receives a target image to be corrected, applies to the target image a recovery filter including a degree-of-blur parameter corresponding to blurriness while changing a value of the degree-of-blur parameter, evaluates a degree of recovery of each of corrected target images which have been corrected with recovery filters having different degree-of-blur parameter values, and determines blurriness of the target image based on the degree-of-blur parameter value of the highly evaluated recovery filter; and a blur correction unit that sets a recovery filter for the target image based on the degree-of-blur parameter in accordance with the determined blurriness of the target image and corrects the target image for blur using the recovery filter.

A zoom lens is disclosed which is superior in reduction of the lens diameter and can suppress degradation in performance while a high zoom ratio is achieved. The zoom lens is formed as a zoom lens of a four-group configuration having positive, negative, positive and positive groups. The second and fourth lens groups move whereas the first and third lens groups are fixed. An aperture stop is disposed on the object side of the third lens group. The third lens group includes negative and positive sub groups with an air distance left therebetween. The positive sub group is shiftable perpendicularly to the optical axis to shift an image substantially perpendicularly. A conditional expression 1.4<|f3n| / f3<3 is satisfied where f3n is the focal distance of the negative sub group and f3 is the focal distance of the third lens group.

Providing a zoom lens system having excellent optical performance with a high zoom ratio, an imaging apparatus, and a method for zooming the zoom lens system. The system including, in order from an object, a first group G1 having negative refractive power, a second group G2 having positive refractive power, a third group G3 having negative refractive power, and a fourth group G4 having positive refractive power. An aperture stop S is disposed between the second group G2 and the fourth group G4. Upon zooming from a wide-angle end state to a telephoto end state, each group is moved such that a distance between the second group G2 and the third group G3 increases, a distance between the third group G3 and the fourth group G4 decreases, and the aperture stop S is moved together with the third group G3. Given conditions are satisfied.

Provided is a method for processing a radiographic image including obtaining a radiographic image using an indirect radiographic detector comprising a scintillator panel and a pixel array panel, determining a parameter value for defining a point spread function (PSF) according to the scintillator panel or the pixel array panel, and correcting the radiographic image by deconvoluting the radiographic image using the PSF to which the parameter value is applied.

A blur correcting device includes a shake detecting unit configured to detect a shake and output a detection signal indicating a result of the detection; a drive unit configured to displace a relative positional relationship between a lens unit and an image pickup element relative to an optical axis such that a position of an optical image formed on an image pickup surface of the image pickup element is displaced on the image pickup surface; and a control unit configured to increase a displacement range when the amount of shake indicated by the detection signal is larger than a predetermined level, displace the relative positional relationship between the lens unit and the image pickup element within the increased displacement range in accordance with the detection signal, and thereby correct a blur of the optical image on the image pickup surface caused by the shake detected by the shake detecting unit.

An image-taking apparatus includes: a CCD having an imaging surface; and an image-taking optical system having an objective lens. The apparatus further includes: a shake detector that detects a shake of the image-taking apparatus; and a correction lens disposed between the objective lens and the CCD and moving in parallel with the imaging surface to correct a blur in an image formed on the imaging surface caused by the shake of the image-taking apparatus. The apparatus further includes: an electromagnet disposed behind the CCD and driving the correction lens; a power transmission system that moves the correction lens by transmitting power from the electromagnet to the correction lens; and a correction-lens controller that causes, based on a detection result from the shake detector, the electromagnet to drive the correction lens such that an image whose blur due to the shake is corrected is formed on the imaging surface.

A zoom lens having at least a first lens group including a reflection member for bending an optical axis fixedly during zooming and having a negative refractive power, a second lens group having a negative refractive power, and a third lens group arranged in the order from an object side is provided. In the zoom lens, an image can be shifted into a direction perpendicular to the optical axis by moving either of the second and the third lens groups (“shift lens group”) in a direction perpendicular to the optical axis, and a following conditional expression (1) is satisfied, 0.5<(1−βα)×βb<3.0,  (1) where: βα: a magnification of the shift lens group in a maximum telephoto state, and βb: a magnification of a lens group arranged on an image surface side of the shift lens group in the maximum telephoto state.

An image correction apparatus which corrects blurring generated by the traveling of a vehicle in the captured image, including: a camera which captures an image of front of a vehicle continuously; mobile vector calculation means of calculating a mobile vector in an image of each object based on a position of an object in each image continuously captured by the camera; and blurring correction means of correcting blurring of the image captured by the camera using the mobile vector calculated by the mobile vector calculation means.

A plurality of image capturing data time-divisionally exposed by a capturing unit are input, and are divided into synthesis images or motion detection images. A motion amount of the capturing unit at the time of time-division exposure is detected from the image capturing data of the motion detection images, and synthesized image capturing data is generated by synthesizing the synthesis images. Then, a vibration of the synthesized image capturing data is corrected based on a divide pattern indicating divisions, and the motion amount.