An image processing apparatus (104) includes an acquirer (104b) configured to acquire information related to a lateral chromatic aberration, and a corrector (104c) configured to correct an image to reduce the lateral chromatic aberration based on the information related to the lateral chromatic aberration, the information related to the lateral chromatic aberration includes a first component related to a design value, and a second component related to a manufacturing error, each of the first component and the second component is a rotationally symmetric component.

The invention relates to a camera modeling and calibration system and method using a new set of variables to compensate for imperfections in line of sight axis squareness with camera plane and which increases accuracy in measuring distortion introduced by image curvature caused by geometric and chromatic lens distortion and wherein the camera image plane is represented from a full 3D perspective projection.

An imaging apparatus is provided. The apparatus comprises a controller configured to transmit an image obtained by an image sensor to an external device via a communication circuit, and cause the external device to execute a predetermined image processing on the image. The controller obtains information indicating recommendation or non-recommendation for the execution of the predetermined image processing on the image by the external device, based on a state of at least one of an imaging optical system and the image sensor when capturing the image, and transmits an execution request for the predetermined image processing on the image to the external device via the communication circuit, if the obtained information indicates the recommendation.

In one example, digital image frames are accessed, each of the digital image frames having an associated control value for an automatic image capture processing function. A measure of information content change is determined for a current digital image frame relative to at least one previous digital image frame. A measure of information content reliability with respect to the automatic image capture processing function is determined for the current digital image frame. The control value associated with the current digital image frame is corrected based on the determined measure of information content change and the determined measure of information content reliability. A final control value for the automatic image capture processing function is output based on corrected control values for one or more digital image frames.

An image smoothing unit smoothing a target image having pixel values which include a plurality of color components with a different plurality of smoothing degrees and generating a plurality of smoothed images; a calculation unit obtaining color differences being differences between a pixel value of a predetermined color component of the target image and pixel values of a color component of each of the smoothed images which is different from the predetermined color component at each pixel position of the target image, and calculating dispersions of the obtained color difference; a determination unit comparing sharpness of each of the color components of the target image based on the dispersions of the color differences and determining a color component having the highest sharpness; and an adjustment unit adjusting the sharpness of at least one of the color components of the target image based on the color component having the highest sharpness.

The purpose of the present invention is to correct the reduced degree of modulation in a diagonal direction in a four-plate camera having a frame memory and R, G1, G2, and B image pickup elements among which two green image pickup elements (G1, G2) shift pixels diagonally. This image pickup method is provided for an image pickup device having two green image pickup elements, a red image pickup element, and a blue image pickup element among which the two green image pickup elements shift pixels diagonally. The method includes, with respect to a contour correction target pixel, generating a diagonal contour correction signal from respective image signals of two diagonally upper left pixels, two diagonally upper right pixels, two diagonally lower left pixels, and two diagonally lower right pixels, and adding the diagonal contour correction signal to an image signal of the contour correction target pixel.

A processing device which obtains distance information of a subject, including: a calculation unit configured to calculate the distance information of the subject from a difference in blur degree of a plurality of images photographed by an imaging optical system; a correcting unit configured to correct the distance information using correction data in accordance with an image height in the imaging optical system; and an extraction unit configured to extract at least one frequency component from each of the plurality of images, wherein the calculation unit calculates the distance information from a difference in blur degree in the plurality of images in the at least one frequency component; and the correcting unit corrects the distance information using correction data in accordance with an image height in the at least one frequency component.

Systems and methods for correcting intensity drop-offs due to geometric properties of lenses are provided. In one example, a method includes receiving an input pixel of the image data, the image data acquired using an image sensor. A color component of the input pixel is determined. A gain grid is determined by pointing to the gain grid in external memory. Each of the plurality of grid points is associated with a lens shading gain selected based upon the color of the input pixel. A nearest set of grid points that enclose the input pixel is identified. Further, a lens shading gain is determined by interpolating the lens shading gains associated with each of the set of grid points and is applied to the input pixel.

An imaging device includes an optical system, a plurality of imaging elements, an imaging unit, a comparison unit, and a correction unit. The optical system is configured to disperse light of a subject image. The imaging elements are configured to capture subject images dispersed by the optical system using a rolling shutter method. The imaging unit is configured to shift a slit range, which is between a front curtain and a rear curtain of the rolling shutter method, by at least one line in a sub-scanning direction between the plurality of imaging elements. The comparison unit is configured to calculate a level difference in units of lines between image signals output by the plurality of imaging elements by comparing signal levels of the image signals, and the correction unit configured to correct influence of a flash band on the image signals on the basis of the level difference.

Embodiments relate to axial chromatic aberration (ACA) reduction of raw image data generated by image sensors. A chromatic aberration reduction circuit performs chromatic aberration reduction on the raw image data to correct the ACA in the full color images through sharpening that has been clamped to reduce sharpening overshoot.