Abstract: An image processing system according to the present disclosure includes: a measurement image generator that generates a measurement image in which a plurality of rectangular unit images is arranged, each of the unit images being configured by arranging a plurality of gradation images in a first direction; a correction data generator that generates correction data used to correct display unevenness on the basis of a measured value that is acquired by measuring the measurement image generated by the measurement image generator by using a measuring instrument; and a display unevenness corrector that corrects an input gradation on the basis of the correction data generated by the correction data generator.

Abstract: An image processing system according to the present disclosure includes: a measurement image generator that generates a measurement image in which a plurality of rectangular unit images is arranged, each of the unit images being configured by arranging a plurality of gradation images in a first direction; a correction data generator that generates correction data used to correct display unevenness on the basis of a measured value that is acquired by measuring the measurement image generated by the measurement image generator by using a measuring instrument; and a display unevenness corrector that corrects an input gradation on the basis of the correction data generated by the correction data generator.

Abstract: A display device (10) includes: an integrated control unit (31) that allows selection from among at least a high-luminance mode and a luminance-unevenness-suppression-preferred mode in accordance with an input instruction; and an unevenness correction unit (36) that performs color unevenness correction for each pixel in both the high-luminance mode and the luminance-unevenness-suppression-preferred mode. In the luminance-unevenness-suppression-preferred mode, the unevenness correction unit (36) performs a pixel value limitation process for uniformly shifting, for each pixel, a pixel value in image data to a lower pixel value to thereby decrease the pixel value to a pixel value lower than that in the high-luminance mode, and thereafter, performs the color unevenness correction. Accordingly, even if the use of the display device varies, image processing that is appropriate for various uses is implemented.

Abstract: A display device (10) includes: an integrated control unit (31) that allows selection from among at least a high-luminance mode and a luminance-unevenness-suppression-preferred mode in accordance with an input instruction; and an unevenness correction unit (36) that performs color unevenness correction for each pixel in both the high-luminance mode and the luminance-unevenness-suppression-preferred mode. In the luminance-unevenness-suppression-preferred mode, the unevenness correction unit (36) performs a pixel value limitation process for uniformly shifting, for each pixel, a pixel value in image data to a lower pixel value to thereby decrease the pixel value to a pixel value lower than that in the high-luminance mode, and thereafter, performs the color unevenness correction. Accordingly, even if the use of the display device varies, image processing that is appropriate for various uses is implemented.

Abstract: A display calibration system includes: a display section subject to calibration; a correction data outputting section configured to perform a calibration process to determine, for each of the pixels of the display section, correction data for non-uniformity correction; and a first storage section configured to store reference data to be used in the calibration process. The reference data represents, for individual color patches of a first predetermined number, correspondences between RGB values and reference values. The correction data outputting section obtains, on a basis of the reference data and the measurement values of the color patches of a second predetermined number that is less than the first predetermined number, the pieces of correction data with respect to RGB values of the individual color patches of the predetermined second number. With this arrangement, it is possible to shorten a processing time of the calibration process.

Abstract: An image processing apparatus includes: a dividing process section (122) configured to divide a captured image into a plurality of partial images; a histogram creating section (123) configured to create a histogram representing a distribution of the number of pixels for density values with respect to each color component of each of the partial images; an adjustment value calculating section (124) configured to determine, for each of the partial images, an adjustment value based on a peak in the histogram; an adjusting section (127) configured to generate, for each of the partial images, tone correction data by replacing a specific input value in reference data with the adjustment value; and a correction process section (128) configured to generate a corrected image by tone-correcting each of the partial images with use of the tone correction data.

Abstract: An image processing apparatus includes: a dividing process section (122) configured to divide a captured image into a plurality of partial images; a histogram creating section (123) configured to create a histogram representing a distribution of the number of pixels for density values with respect to each color component of each of the partial images; an adjustment value calculating section (124) configured to determine, for each of the partial images, an adjustment value based on a peak in the histogram; an adjusting section (127) configured to generate, for each of the partial images, tone correction data by replacing a specific input value in reference data with the adjustment value; and a correction process section (128) configured to generate a corrected image by tone-correcting each of the partial images with use of the tone correction data.

Abstract: A display calibration system includes: a display section subject to calibration; a correction data outputting section configured to perform a calibration process to determine, for each of the pixels of the display section, correction data for non-uniformity correction; and a first storage section configured to store reference data to be used in the calibration process. The reference data represents, for individual color patches of a first predetermined number, correspondences between RGB values and reference values. The correction data outputting section obtains, on a basis of the reference data and the measurement values of the color patches of a second predetermined number that is less than the first predetermined number, the pieces of correction data with respect to RGB values of the individual color patches of the predetermined second number. With this arrangement, it is possible to shorten a processing time of the calibration process.

Abstract: A captured image processing system is provided. The captured image processing system includes a portable terminal apparatus and an image output apparatus, each of which are communicable with the other. The portable terminal apparatus captures an image of an object and transmits output target image data obtained by capturing the image to the image output apparatus so as to cause output of this captured image from the image output apparatus. The image output apparatus carries out image processing to the received output target image data, and outputs (a) corrected image data, or (b) an image indicated by the corrected image data. The captured image processing system allows easy output of necessary regions included in an image captured by the portable terminal apparatus, and allows output of an image having no geometric distortion even if image capture is carried out obliquely with respect to a captured image object.

Abstract: A captured image processing system includes a portable terminal apparatus and an image output apparatus. The portable terminal apparatus captures images consecutively while detecting a change in position of the portable terminal apparatus during the image capture, and transmits, to the image output apparatus, (i) a plurality of captured image data and (ii) motion information on the change in position detected for each of the plurality of captured image data. The output apparatus receives, from the portable terminal apparatus, the plurality of captured image data and the motion information, carries out, in accordance with the motion information, a positioning process in which the plurality of captured image data are positionally adjusted, prepares, by use of the plurality of captured image data subjected to the positioning process, high resolution image data, and outputs the high resolution image data prepared or an image displayed based on the high resolution image data.

Abstract: A feature point calculating section binarizes the image data to obtain a centroid of a consecutive component in which pixels are connected as a feature point, reverses the image data, obtains a centroid as a feature point from the reversed image data similarly, and adds them as a feature point of the image data. A features calculating section calculates a predetermined invariant based on the feature point containing the feature point obtained from the reversed image data, and calculates a hash value based on the predetermined invariant. A vote process section retrieves a hash table based on the calculated hash value, votes for a document of an index stored in association with the hash value, and accumulatively adds the vote. A similarity determination process section compares the number of votes calculated by the vote process section with a predetermined threshold value to determine a similarity.

Abstract: An image output apparatus receives a single piece of captured image data from a portable terminal apparatus, and carries out, in accordance with the single piece of captured image data received, a high resolution correction for creating high resolution image data which has a higher resolution than the single piece of captured image data. Then, the image output apparatus carries out an output process in which the high resolution image data created is outputted. This provides a captured image processing system which allows an image output apparatus to output an image captured by a portable terminal apparatus while the image is improving in resolution such as text readability.

Abstract: A compression process and apparatus includes: generating a background layer by extracting a text region from an input image and removing at least the text region from the input image; extracting a background region corresponding to a color characteristic from a background layer; recording coordinate values of the background region extracted; and storing the background region in a form in accordance with the color characteristic of the background region extracted. Further, a data storage section stores a local background and a page background as information including the background color estimated and the coordinate values of the background region including the background color, each of which local background and page background are included in the background layer. This configuration makes it possible to improve a compression efficiency and image quality.

Abstract: A portable terminal apparatus consecutively more than once captures images of an identical image capture object. The portable terminal apparatus determines whether or not a plurality of pieces of captured image data captured include a combination of a given number (an integer not less than 2) of pieces of captured image data which are applicable to be subjected to the high resolution correction by the correction processing section and are offset by a given amount, and transmits, to an image output apparatus, the given number of pieces of captured image data which are determined to be the combination. The image output apparatus receives the given number of pieces of captured image data from the portable terminal apparatus, and carries out, in accordance with the given number of pieces of captured image data, the high resolution correction for preparing high resolution image data which has a higher resolution than the given number of pieces of captured image data received.

Abstract: The invention accomplishes an image capture apparatus capable of allowing a user to more easily attain, as compared to a conventional image capture apparatus, image data of a captured image which includes no blown-out highlights or loss of shadow detail throughout an entire image.

Abstract: An object extraction section of an image output apparatus determines as an extraction region either (a) a quadrangular region enclosed by a quadrangle in which all internal angles are less than 180° and sides are constituted by 4 edge pixel groups each in the form of a line segment, the 4 edge pixel groups being indicated by edge information, or (b) a polygonal region enclosed by a polygon in which all internal angles are less than 180° and sides are constituted by at least one edge pixel group in the form of a line segment, which edge pixel group is indicated by the edge information, and at least one line segment located on an end portion of the captured image, and then (ii) cuts out, as output target image data, image data of the extraction region from the captured image data. This makes it possible to accurately and easily extract, from a captured image, a region including a rectangular image capture object that a user desires.

Abstract: A control device of the present invention includes: a face position detecting section for detecting a position of a user's face in an image captured by a capturing device; a face recognition processing section for checking a partial image against reference face images, the partial image being at the position detected in the captured image, and extracting a reference face image that matches the face in the partial image; a user authentication section for specifying a user name that corresponds to the extracted reference face image; and a data checking section for (i) checking whether or not a multifunction printer receives print data added with the specified user name, and (ii) if it is confirmed that the multifunction printer receives the print data, operating an image forming section of the multifunction printer to form an image based on the print data.

Abstract: There are provided: a pattern detection process section for extracting a partial image made of pixels including a target pixel from input image data; a rotated image generating section for generating a self-rotated image by rotating the partial image; and a matching test determination section for determining whether an image pattern included in the partial image matches an image pattern included in the self-rotated image. When it is determined that matching exists, a target pixel in the partial image or a block made of pixels including the target pixel is regarded as a feature point. Consequently, even when image data has been read while skewed with respect to a predetermined positioning angle of a reading position of an image reading apparatus or image data has been subjected to enlarging, reducing etc., a feature point properly specifying the image data can be extracted regardless of skew, enlarging, reducing etc.

Abstract: There are provided: a pattern detection process section for extracting a partial image made of pixels including a target pixel from input image data; a displaced image generation section for generating a self-displaced image by displacing at least a part of the partial image through a predetermined method; and a matching test determination section for determining whether an image pattern included in the partial image matches an image pattern included in the self-displaced image or not. When the matching test determination section determines that the matching exists, a target pixel in the partial image or a block made of pixels including the target pixel is regarded as a feature point. Consequently, even when image data is subjected to a process such as enlarging and reducing, it is possible to extract a feature point that properly specifies the image data regardless of the enlarging/reducing process.

Abstract: A captured image processing system includes a portable terminal apparatus and an image output apparatus. The portable terminal apparatus captures images consecutively more than once while detecting a change in position of the portable terminal apparatus during the image capture (S10), and transmits, to the image output apparatus, (i) a plurality of pieces of captured image data and (ii) motion information on the change in position which change has been detected for each of the plurality of pieces of captured image data (S15).