Abstract:
An image reading apparatus includes a reading processing unit that acquires image data including an image of a document placed on a document placement unit. A first detection processing unit detects a first line image whose width or density exceeds a predetermined first threshold value from the image data. A second detection processing unit detects a rectangular area that is defined by the first line image, included in the image data, and satisfies a predetermined detection condition. A third detection processing unit detects a second line image whose width or density exceeds a second threshold value smaller than the first threshold value from the rectangular area. A fourth detection processing unit detects, as document areas of the respective documents, the rectangular area not divided by the second line image and divided areas included in the rectangular area divided by the second line image.
Abstract:
An reading device includes: a reading region setting section setting a reading region set under an inclination correction by an inclination correction section to be larger than a reading region set without the inclination correction, an image reading section reading a document in the reading region to generate image data, and a determination section defining a target region from a whole region of the image data and analyzing a portion of the image data corresponding to the document in the target region thereby determining an attribute of the image data, defining, without the inclination correction, a region obtained by inwardly narrowing the whole region of the image data by a predefined first region as the target region, and defining, under the inclination correction, a region obtained by inwardly narrowing the whole region of the image data by a second region larger than the first region as the target region.
Abstract:
An image processing device includes: an estimated size setting section (ACS determination section 151) which sets a document size of a document sheet as an estimated size; a threshold deciding section (ACS determination section 151) which decides a first threshold according to the estimated size; and an ACS determination section (151) which determines that the document sheet is a color document sheet when a number of color pixels reaches the first threshold. When an actual size of the document sheet is smaller than the estimated size, the threshold deciding section decides a second threshold which is smaller than the first threshold, and the document sheet is determined to be a color document sheet when the number of color pixels is the second threshold or greater and is determined to be a black-and-white document sheet when the number of color pixels is smaller than the second threshold.
Abstract:
An image reading device (100) includes an image reading unit (1) for reading a document, a document feeder unit (2) for feeding document sheets, a setting input unit (3) for accepting a mixed setting mode, a size determination unit (7) for determining a main scanning direction size, a blank sheet detection unit (8) configured to repeat detection whether or not a blank sheet detection area (F) in image data is blank since before one page reading is completed, and when reading in the mixed setting mode, to perform the blank sheet detection process in main scanning widths of a plurality of the blank sheet detection areas (F), so as to detect whether or not the document sheet is blank in the main scanning width corresponding to the determined main scanning direction size, and a blank sheet deletion unit (9) for deleting document image data of the detected blank sheet.
Abstract:
An image forming apparatus includes a memory, a control device, and an image forming device. The control device includes a processor and functions as a memory manager and a controller through the processor executing a control program. The memory manager allocates amounts of the memory depending on different types of processing constituting a job to create a plurality of memory regions. The controller executes the job using at least one of the plurality of memory regions. The image forming device executes an image forming job of forming an image on a sheet under control of the controller.
Abstract:
An image reading device includes a blank elimination processing portion that performs blank elimination processing for eliminating image data of an original document if a preset blank detection area in the original document is blank and a frame erasure processing portion that performs frame erasure processing for correcting image data of an original document so that any image in an area other than a preset effective image area in the original document does not appear. The blank elimination processing portion performs resetting in which a superimposition area where the preset blank detection area and the preset effective image area are superimposed on each other is set as a new blank detection area.