Canon Kabushiki Kaisha

Tomochika Murakami

Keiichi Iwamura

Junichi Hayashi

Yoshihiro Ishida

Yuji Suzuki

Satoru Wakao

Kazuya Kodama

Yasuhiro Sawada

Miyoko Kawashima

Hiromitsu Nishikawa

Takeshi Makita

Tomoyuki Miyashita

An image processing method, includes: an input step in which a computer acquires data of a plurality of input images acquired by imaging performed using a same image sensor; and an optimization process step in which a computer determines an optimal solution of brightness change with respect to each input image by performing iterative calculations using an iterative method to improve overall image quality of the plurality of input images. In the optimization process step, an optimal solution of brightness change for each pixel of each input image is determined under a condition that common brightness change is performed with respect to pixels at a same position in respective input images.

Image processing apparatus and image processing method

An image processing method includes the steps of: generating, based on data of a plurality of images acquired by performing imaging using a same image sensor, a weight coefficient corresponding to each image so that a weight coefficient corresponding to an image of which a brightness change is smooth is relatively large; integrating the data of the plurality of images using the weight coefficients to generate data of an integrated image; applying smoothing to the data of the integrated image to generate data of a smoothed integrated image; and generating, based on the data of the integrated image and the data of the smoothed integrated image, data of estimated fixed-pattern noise which is an estimated value of fixed-pattern noise attributable to the image sensor.

Image processing apparatus and image processing method for estimating fixed-pattern noise attributable to image sensor

A combination of a latent-image pattern which forms a latent-image part and a background pattern that forms a background-image part is determined so that the latent-image part and background-image part have equal print densities. The determined latent-image pattern and background pattern, color information used to determine a color of the copy-forgery-inhibited pattern image, input image information as an image to be processed, copy-forgery-inhibited pattern basic information used to designate the latent-image part and background-image part, and camouflage region designation image information used to designate a camouflage region are input. A copy-forgery-inhibited pattern image is generated on the basis of the input information.

Copy-forgery-inhibited pattern image generation method and image processing apparatus

An image generating apparatus generates an edge image that is an image for which an edge has been enhanced or extracted from an original image obtained by imaging a subject. The image generating apparatus has a viewpoint image generating unit configured to generate a viewpoint image from the original image; and an edge processing unit configured to generate the edge image by applying edge processing to enhance or extract an edge with respect to the viewpoint image generated by the viewpoint image generating unit.

Image generating apparatus and image generating method

An image processing apparatus includes: an imaging characteristic acquisition unit that acquires, on the basis of information that designates a depth of field for second image data to be generated, imaging characteristics of a virtual optical system having the designated depth of field; a selection unit that determines, on the basis of the imaging characteristics acquired, an influence range in which an influence exerted onto an image by an object that is spaced apart from the focal position in the optical axis direction is greater than a predetermined condition, and that selects first image data of which focal position is contained within the influence range, from among a plurality of first image data items; and a generation unit that generates the second image data using the first image data selected by the selection unit.

An imaging system includes: an imaging unit that divides an imaging area of a subject into a plurality of blocks and captures images of the blocks; an image processing unit that merges the images of the respective blocks captured by the imaging unit to generate an entire image; a measuring unit that measures a plurality of points on the subject to acquire measured data before an image of the subject is captured by the imaging unit; and a dividing position adjusting unit that adjusts dividing positions of the subject based on the measured data of the measuring points acquired by the measuring unit so that boundaries of the blocks are arranged at positions having smaller spatial variations in values of the measured data. The imaging unit captures an image of each block according to the dividing positions adjusted by the dividing position adjusting unit.

Imaging system and control method thereof

The image processing apparatus includes a first reducing part configured to reduce a component of chromatic aberration of magnification which is included in the image, and a second reducing part configured to reduce a component of longitudinal chromatic aberration which is included in the image in which the component of chromatic aberration of magnification has been reduced. The image processing method includes a first step of reducing a component of chromatic aberration of magnification which is included in the image, and a second step of reducing a component of longitudinal chromatic aberration which is included in the image in which the component of chromatic aberration of magnification has been reduced. The apparatus and method can reduce color blur in the image caused by the chromatic aberration of magnification and the longitudinal chromatic aberration.

Image processing apparatus and image processing method for reducing color blur

A primary test printing process of a plurality of copy-forgery-inhibited pattern images generated by changing one or both of print densities of the latent-image and background-image parts in a first pattern on the basis of a predetermined parameter is performed. The user selects one copy-forgery-inhibited pattern image which has the latent-image and background-image parts with approximate print densities from the plurality of copy-forgery-inhibited pattern images generated by the primary test printing process. A secondary test printing process of a plurality of copy-forgery-inhibited pattern images generated by changing one or both of print densities of the latent-image and background-image parts in a second pattern on the basis of the parameter used to determine the print densities of the latent-image and background-image parts of the selected copy-forgery-inhibited pattern image is performed. The user selects one copy-forgery-inhibited pattern image which has the latent-image and background-image parts with approximate print densities from the plurality of copy-forgery-inhibited pattern images generated by the secondary test printing process, and the parameter of the selected copy-forgery-inhibited pattern image is determined as a copy-forgery-inhibited pattern density parameter.

Copy-forgery-inhibited pattern density parameter determination method, copy-forgery-inhibited pattern image generation method, and image processing

A provider side apparatus provides original digital data together with a digital signature generated by the provider side apparatus, the digital signature detecting whether the original digital data was falsified or detecting a change level given to the original digital data. Upon reception of the digital data, a receiver side apparatus can know the originality of the received digital data or a change level of the received digital data from the original digital data, in accordance with the digital signature corresponding to the digital data.

Information processing apparatus, information processing system, information processing method, storage medium and program

An input step of inputting image information according to an image and a judgment step of judging, for each image data corresponding a predetermined-sized block area in the image information input in the input step, whether or not the image data is a part of a specific image are provided. Further, in the judgment step, the judgment is performed not to the entire image information input in the input step but to a part of the image information.

Image processing apparatus, image processing method, and storage medium

This invention can multiplex noise in multilevel image data to reversibly embed visible additional information with a noise-multiplexed distribution while maintaining the atmosphere of the multilevel image data subjected to embedding. For this purpose, when noise is multiplexed on multilevel image data to embed visible additional information with a noise-multiplexed distribution, information representing whether or not to multiplex noise for each pixel is input as the additional information. Whether a pixel of interest in the multilevel image data is located at a position where noise is to be multiplexed is determined on the basis of the additional information (S). When the pixel of interest is determined to be located at the position where noise is to be multiplexed, a bit region where noise is to be multiplexed in the pixel of interest is specified on the basis of data in a region near the pixel of interest (S). Bit information is reversibly changed in the specified bit region of the pixel of interest (S, S).

Image processing apparatus for embedding information with a noise-multiplexed distribution, and method, computer program, and computer-readable storage medium therefor

This invention can multiplex noise on multilevel image data to reversibly embed visible additional information with a noise-multiplexed distribution while maintaining the atmosphere of the multilevel image data subjected to embedding. For this purpose, in this invention, when noise is multiplexed on multilevel image data to embed visible additional information with a noise-multiplexed distribution, information representing whether or not to multiplex noise for each pixel is input as the additional information. Whether a pixel of interest in the multilevel image data is located at a position where noise is to be multiplexed is determined on the basis of the additional information (S). When the pixel of interest is determined to be located at the position where noise is to be multiplexed, the second bit region where noise is to be multiplexed is specified on the basis of the first bit region in a bit configuration which constitutes the pixel of interest (S). Bit information in the second bit region of the specified pixel of interest is changed (S, S).

An object of the present invention is to assuredly provide image data with the position of a region of interest in an image represented by the image data. In order to achieve this object, position information for specifying a region of interest within the image is embedded so as not to be recognized by human eyes, using a digital-watermark technique.

Growing community of inventors

Kanagawa, Japan

Tomochika Murakami