发明授权
- 专利标题： Image processing apparatus and method for the fast and accurate calibration of the same using actual and pseudo reference image data
- 专利标题（中）： 使用实际和伪参考图像数据快速准确地校准图像处理装置和方法
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申请号： US09864818申请日： 2001-05-24
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公开(公告)号： US06985251B2公开(公告)日： 2006-01-10
- 发明人: Yoshitaka Okahashi , Nobuo Manabe , Takao Horiuchi , Kyosuke Taka , Mitsuharu Yoshimoto , Hidekazu Sakagami
- 申请人： Yoshitaka Okahashi , Nobuo Manabe , Takao Horiuchi , Kyosuke Taka , Mitsuharu Yoshimoto , Hidekazu Sakagami
- 申请人地址： JP Osaka
- 专利权人： Sharp Kabushiki Kaisha
- 当前专利权人： Sharp Kabushiki Kaisha
- 当前专利权人地址： JP Osaka
- 代理机构： Edwards & Angell, LLP
- 代理商 David Conlin; David Tucker
- 优先权： JP2000-155338 20000525
- 主分类号： G06K15/00
- IPC分类号： G06K15/00
摘要：
The image forming apparatus includes: an image data input section for reading a document as image data; a target value memory section for storing a target value of an input/output characteristic value when a reference document is read; a comparator for comparing the image data of the reference document and the target value so as to create a new input/output characteristic value; a fixed value memory section for storing a difference in input/output characteristic values as a fixed value between an original document and a copy document; and an adder for adding the fixed value to the image data of the reference document so as to output a resultant value to the comparator. By the provision of the fixed value memory section and the adder, the image forming apparatus can set a plurality of input/output characteristic values by reading the reference document once, thus reducing time for the procedure of setting the respective input/output characteristic values.