摘要:
An image reading apparatus includes: three line sensors having filters, respectively, different in spectral sensitivity, and arranged in a subscanning direction with a distance therebetween to scan an original in the subscanning direction; a platen arranged between the original and the three line sensors; a mover moving the platen at a rate relative to the three line sensors, the rate being different from that of the original relative to the three line sensors; a noise pixel detection processor detecting a noise pixel from each of the three data output from the three line sensors; a color detector detecting a color of each noise pixel from the three data; and a determiner validating a result of detection by the noise pixel detection processor when a color of the noise pixel and that of a pixel neighboring the noise pixel form a predetermined combination.
摘要:
An image reading apparatus includes: three line sensors mutually spaced in a sub scanning direction; a platen arranged between the original and the three line sensors; a mover moving the platen relative to the three line sensors at a rate relative to the three line sensors, the rate being different from that of the original relative to the three line sensors; a lightness difference detector extracting a feature pixel having a predetermined feature from each of three data output from the three line sensors; and NOR and AND devices comparing a plurality of data corresponding to a single location on the original to detect the feature pixel extracted from one of the plurality of data, as a noise pixel if the feature pixel is not a feature pixel for the other data and also has at least a predetermined value in saturation.
摘要:
An image reading apparatus includes, with the purpose of accurately correcting noise in an image due to dust on a platen, three line sensors spaced from each other in a sub scanning direction to scan an original in the sub scanning direction, a platen between the original and the three line sensors, a moving mechanism for moving the platen, a noise detection processor detecting a noise pixels from each of multiple data output from the three line sensors, a selector selecting one of a plurality of search ranges defined with reference to the noise pixel, and a corrector extracting a reference pixel for correcting the noise pixel from the selected search range to correct the noise pixel based on the value of the extracted reference pixel.
摘要:
An image reading apparatus includes: three line sensors mutually spaced in a sub scanning direction; a platen arranged between the original and the three line sensors; a mover moving the platen at a rate relative to the three line sensors, the rate being different from that of the original relative to the three line sensors; a first lightness difference detector extracting a first feature pixel of a first level from each of three data output from the three line sensors; a second lightness difference detector extracting a second feature pixel of a second level; and NOR and AND devices comparing the three data corresponding to a single location on the original to detect the first feature pixel extracted from one of the three data, as a noise pixel if the second feature pixel is not extracted from the other data.
摘要:
An image reading apparatus includes: three line sensors having filters, respectively, different in spectral sensitivity, and arranged in a subscanning direction with a distance therebetween to scan an original in the subscanning direction; a platen arranged between the original and the three line sensors; a mover moving the platen at a rate relative to the three line sensors, the rate being different from that of the original relative to the three line sensors; a noise pixel detection processor detecting a noise pixel from each of the three data output from the three line sensors; a color detector detecting a color of each noise pixel from the three data; and a determiner validating a result of detection by the noise pixel detection processor when a color of the noise pixel and that of a pixel neighboring the noise pixel form a predetermined combination.
摘要:
An image reading apparatus includes: three line sensors mutually spaced in a sub scanning direction; a platen arranged between the original and the three line sensors; a mover moving the platen at a rate relative to the three line sensors, the rate being different from that of the original relative to the three line sensors; a first lightness difference detector extracting a first feature pixel of a first level from each of three data output from the three line sensors; a second lightness difference detector extracting a second feature pixel of a second level; and NOR and AND devices comparing the three data corresponding to a single location on the original to detect the first feature pixel extracted from one of the three data, as a noise pixel if the second feature pixel is not extracted from the other data.
摘要:
An image reading apparatus includes, with the purpose of accurately correcting noise in an image due to dust on a platen, three line sensors spaced from each other in a sub scanning direction to scan an original in the sub scanning direction, a platen between the original and the three line sensors, a moving mechanism for moving the platen, a noise detection processor detecting a noise pixels from each of multiple data output from the three line sensors, a selector selecting one of a plurality of search ranges defined with reference to the noise pixel, and a corrector extracting a reference pixel for correcting the noise pixel from the selected search range to correct the noise pixel based on the value of the extracted reference pixel.
摘要:
An image processing apparatus includes a region determination unit detecting attributes of image data generated by a reading unit; an image modification unit generating attribute data based on the results of the determination performed by the region determination unit; an image conversion processing circuit performing resolution conversion processing on the image data of a pixel of interest; and an attribute conversion processing circuit performing resolution conversion processing on the attribute data of the pixel of interest. The attribute resolution converter employs attribute data identical to the attribute data before being subjected to the attribute resolution conversion processing as the attribute data for the pixel of interest following the attribute resolution conversion processing, and employs the attribute data after being subjected to the attribute resolution conversion processing as the attribute data for neighboring pixels to the right and left of the pixel of interest following the attribute resolution conversion processing.
摘要:
In order to prevent leakage of prescribed information (such as highly confidential information, for example) stored in a data management apparatus via a storage device external to such data management apparatus, when the data management apparatus carries out processing to back up the data stored therein to the external storage device, the data management apparatus prohibits backup of prescribed designated information.
摘要:
A job execution system comprises a job execution apparatus, an image data storage portion which is installed either outside or inside the job execution apparatus and stores image data in each box, a group information storing portion which is installed either outside or inside the job execution apparatus and stores group information preset for each group to which the user belongs in association with the box, a group information acquisition portion which is installed to the job execution apparatus and acquires the group information associated with the box when the box in which the image data is stored is designated by the user, and a controller which operates the job execution apparatus in conformity to the acquired group information.