IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND DOCUMENT AREA DETECTION METHOD

    公开(公告)号:US20210281698A1

    公开(公告)日:2021-09-09

    申请号:US17179459

    申请日:2021-02-19

    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.

    IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD
    2.
    发明申请
    IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD 有权
    图像读取装置,图像形成装置和图像读取方法

    公开(公告)号:US20160127606A1

    公开(公告)日:2016-05-05

    申请号:US14921559

    申请日:2015-10-23

    CPC classification number: H04N1/3878

    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 translation: 读取装置包括:读取区域设定部,其将通过倾斜修正部的倾斜修正下设定的读取区域设定为大于不进行倾斜校正的读取区域;图像读取部,读取读取区域中的文档,生成 图像数据和确定部分,从图像数据的整个区域定义目标区域,并且分析与目标区域中的文档相对应的图像数据的一部分,从而确定图像数据的属性,而不需要倾斜校正 通过将预定义的第一区域的图像数据的整个区域向内变窄为目标区域而获得的区域,并且在倾斜校正下限定通过将图像数据的整个区域向内变窄的区域变大 比第一个区域作为目标区域。

    IMAGE PROCESSING DEVICE
    3.
    发明申请

    公开(公告)号:US20210337082A1

    公开(公告)日:2021-10-28

    申请号:US17269559

    申请日:2019-06-28

    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.

    IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND METHOD FOR CONTROLLING IMAGE READING DEVICE
    4.
    发明申请
    IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND METHOD FOR CONTROLLING IMAGE READING DEVICE 有权
    图像读取装置,图像形成装置以及用于控制图像读取装置的方法

    公开(公告)号:US20150326743A1

    公开(公告)日:2015-11-12

    申请号:US14650864

    申请日:2014-05-21

    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 translation: 图像读取装置(100)包括用于读取文件的图像读取单元(1),用于馈送文件的文档馈送单元(2),用于接受混合设置模式的设置输入单元(3),尺寸确定单元 (7),用于确定主扫描方向尺寸的空白纸检测单元(8),被配置为重复检测图像数据中的空白纸检测区域(F)是否在一页读取完成之前为空白,并且当读取时 在混合设定模式中,为了在多个空白纸张检测区域(F)的主扫描宽度中执行空白纸张检测处理,以便检测在对应于该纸张检测区域(F)的主扫描宽度中文件纸是否为空白 确定的主扫描方向尺寸,以及用于删除检测到的空白纸张的文档图像数据的空白纸删除单元(9)。

    IMAGE READING DEVICE CAPABLE OF EXECUTING BLANK ELIMINATION PROCESSING AND FRAME ERASURE PROCESSING AND AN IMAGE FORMING APPARATUS INCLUDING THE SAME
    6.
    发明申请
    IMAGE READING DEVICE CAPABLE OF EXECUTING BLANK ELIMINATION PROCESSING AND FRAME ERASURE PROCESSING AND AN IMAGE FORMING APPARATUS INCLUDING THE SAME 有权
    执行空白消除处理和帧擦除处理的图像读取装置和包括其的图像形成装置

    公开(公告)号:US20130321833A1

    公开(公告)日:2013-12-05

    申请号:US13859014

    申请日:2013-04-09

    CPC classification number: H04N1/38 H04N1/00278 H04N1/3872

    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.

    Abstract translation: 如果原始文档中的预设空白检测区域为空白,则执行空白消除处理以消除原始文档的图像数据的空白消除处理部分以及执行用于校正图像数据的帧擦除处理的帧擦除处理部分 的原始文档,使得原始文档中除预设有效图像区域之外的区域中的任何图像不出现。 空白消除处理部进行将预先设定的空白检测区域和预先设定的有效图像区域叠加的叠加区域作为新的空白检测区域进行复位。

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