Image processing apparatus for binarizing image data
AssigneeBrother Kogyo Kabushiki Kaisha
InventorOsamu Takahashi
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Abstract
An original of copying, fax, or the like is read by a CCD image sensor and resulting image data are input to a data abnormality detecting section via an A/D converter and correcting unit. A maximum value and a minimum value of the pieces of gradation information of the image data are detected and compared with a black determination value and a white determination value, respectively, whereby whether the original is all white or all black is detected and an data abnormality announcing section issues an alarm message or the like. The data abnormality detection is performed before a binarizing section binarizes the image data.
Claims35
An image processing apparatus comprising:
- an input section configured to be input image data having gradation information of at least 2-bits per pixel;
- a detecting section configured to detect an abnormality in the gradation information of the image data input to the input section;
- an announcing section configured to announce the detection of the abnormality in a case where the abnormality is detected by the detecting section;
- a binarizing section configured to binarize the gradation information of the image data into 1-bit per pixel;
- and
- an output section configured to output the image data binarized by the binarizing section.
Dependencies are inferred from the claim text.