Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Yurie Ishikawa

Chihiro Matsuguma

Noriko Arai

Tatsuya Namiki

Kenji Ueda

Shinji Hanaoka

An image processing apparatus includes: a gradation correction section that performs output gradation correction with respect to input multi-value image data; a conversion section that converts the multi-value image data, which is acquired after the output gradation correction is performed by the gradation correction section, into binary image data; a storage section that stores the multi-value image data or the binary image data; and a control section that performs control such that the multi-value image data, which is acquired before the output gradation correction is performed, is stored in the storage section in a case where content of the input image data is content which requires the output gradation correction, and such that the binary image data is stored in the storage section in a case where the content of the input image data is content which does not require the output gradation correction.

Image processing apparatus, image forming system, and non-transitory computer readable medium storing program

An image processing apparatus includes an extraction unit, a memory controller, and a transfer unit. The extraction unit extracts, on the basis of image information, pieces of color information having a high frequency of occurrence as color information that is necessary to perform image processing. The memory controller causes a first memory to store a color information group including the pieces of color information extracted by the extraction unit. The transfer unit transfers the color information group from the first memory to a second memory, an access time of the second memory being shorter than an access time of the first memory.

Image processing apparatus, image forming apparatus, and non-transitory computer readable medium

An image reading apparatus includes an image data obtaining unit, a foreign material position information obtaining unit, and a separation processor. The image data obtaining unit obtains image data read from a document passing over a read area. The foreign material position information obtaining unit obtains foreign material position information read from the read area in which the document is not present. The separation processor separates the image data into plural objects including a background object, detects, by using the foreign material position information, a streak image portion caused by foreign material in the read area and included in the image data, and assumes a pixel of the streak image portion to belong to the background object if the pixel is present in the background object and has a pixel value equal to or smaller than a threshold determined in accordance with a representative value of the background.

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Kanagawa, Japan

Yurie Ishikawa