摘要:
In order to enhance the quality of image after removing a noise from image data obtained by scanning an original document, an MFP is provided with a scanning portion to obtain the image data by scanning the original document, a noise detection processing portion to detect a noise from the obtained image data, a dot region detecting portion to detect a region of dots from the obtained image data, and a copy correction processing portion to substitute a noise region with a substitution region that is located in the vicinity of the noise region and that is of the same size as the noise region if a region in the vicinity of the noise region including the noise detected by the noise detection processing portion is included in the region of dots detected by the dot region detecting portion.
摘要:
An image reading apparatus includes: three line sensors; a mover moving a platen at a rate relative to the three line sensors; an interline corrector synchronizing the three line sensors' outputs to be a pixel having read a single location on an original; NOR and AND devices comparing three data corresponding to a single location on the original to detect a noise pixel; a determiner depending on a color of a pixel neighboring a pixel to be processed selected from pixels arranged in the main scanning direction, to determine first data from which a noise pixel is initially detected; and a determiner invalidating a noise pixel identical in location in the main scanning direction to the pixel to be processed, that is included in a line input prior to a line including the pixel detected from the first data and that is detected from data other than the first data.
摘要:
An image processing apparatus, comprising: an input portion that inputs image data of a plurality of pages of document; a password detector that detects a password given to each of the pages; a password judger that judges from a detecting result drew by the password detector about each of the pages, whether or not a shared password issued for each page in common is detected in addition to an individual password uniquely issued for each page; an entry requester that requests entry of a shared password if it is judged by the password detector that a shared password is detected, and requests entry of an individual password about each of the pages if it is judged by the password detector that a shared password is not detected; and an output permitting portion that permits image data of all the pages each having a shared password, which is the image data inputted by the input portion, if the appropriate shared password is entered in response to the request for entry of a shared password, and permits image data of a page having an individual password, if the appropriate individual password is entered about that page in response to the request for entry of an individual password.
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 pixel from each of multiple data output from the three line sensors, a second pixel extractor extracting a second pixel present in first data for correcting the noise pixel, based on a value of a first pixel present in second data different from the first data and corresponding to the same location on the original as the noise pixel, and a corrector correcting the noise pixel based on the extracted second 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 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: three line sensors; a mover moving a platen at a rate relative to the three line sensors; an interline corrector synchronizing the three line sensors' outputs to be a pixel having read a single location on an original; NOR and AND devices comparing three data corresponding to a single location on the original to detect a noise pixel; a determiner depending on a color of a pixel neighboring a pixel to be processed selected from pixels arranged in the main scanning direction, to determine first data from which a noise pixel is initially detected; and a determiner invalidating a noise pixel identical in location in the main scanning direction to the pixel to be processed, that is included in a line input prior to a line including the pixel detected from the first data and that is detected from data other than the first data.
摘要:
An image reading apparatus includes, with the purpose of detecting noise in an image due to dust on a platen, three line sensors, a platen between an original and the line sensors, a moving mechanism for moving the platen, a noise detection processor detecting noise pixels from multiple data output from the line sensors, an order determination unit determining the order in which the noise pixel is detected, based on the order in which the line sensors are arranged and the direction in which the platen is moved, and a noise length calculator predicting the noise length in the sub scanning direction based on the number of noise pixels successive in the main scanning direction, the original transport rate, the platen moving rate, and the distance between the line sensors.
摘要:
An image processing apparatus comprising: an input portion that inputs image data of a plurality of pages of document; a password detector that detects a password given to each of the pages; a password judger that judges from the detecting results drew by the password detector whether or not different passwords are detected from each of the pages; a correlation judger that judges about each of the pages if the password judger judges that different passwords are detected from each of the pages, whether or not the passwords are correlated to each other; and an output permitting portion that permits the image data of all the pages, which are the image data inputted by the input portion, to be outputted without requesting entry of all passwords, if it is judged about each of the pages that the passwords are correlated to each other, on the other hand, requests entry of a password about each of the pages if it is judged about at least one of the pages that the passwords are not correlated to each other, then permits the image data of a certain page to be outputted, if an appropriate password is entered about that page.
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 pixel from each of multiple data output from the three line sensors, a second pixel extractor extracting a second pixel present in first data for correcting the noise pixel, based on a value of a first pixel present in second data different from the first data and corresponding to the same location on the original as the noise pixel, and a corrector correcting the noise pixel based on the extracted second pixel.
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.