Image processing apparatus and image processing method
An image processing device and image technology, which are applied in image data processing, image enhancement, image analysis, etc., can solve the problem of inability to prevent white edges from background images.
Inactive Publication Date: 2007-01-24
KK TOSHIBA +1
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Problems solved by technology
In the conventional image forming apparatus, there is a problem that white fringing cannot be prevented according to the background image
Method used
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Embodiment Construction
[0013] Now, an image forming apparatus and an image forming method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0014] In the image forming apparatus of this embodiment, for example, when a white edge appearing at the edge portion of a character is generated, that is, when the image density after the filtering process decreases compared with the image density before the filtering process, assuming that the white edge is generated, And the image is provided directly by the scanner unit.
[0015]
[0016] (structure)
[0017] figure 1 It is a block diagram showing a structural example of an image forming apparatus according to an embodiment of the present invention. Refer to figure 1 , The image forming apparatus 1 includes: an ADF unit 10; a scanner unit 11; a color conversion unit 12; a filter unit 13; a VCR (Vender Color Removal) unit 14; a γ correction unit 15; a halftone unit 16; The ADF unit ...
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An image processing apparatus having a read unit which reads an image of a document to output an image signal, an identification unit which performs image area identification of a character area and a background area based on the image signal read by the read unit, a non-character filter unit which performs a non-character filter process to the image signal read by the read unit, the non-character filter unit outputting the image signal to which the non-character filter process is performed, a character filter unit which performs a character filter process to the image signal read by the read unit, the character filter unit outputting the image signal to which the character filter process is performed, a comparison unit which compares the image signal from the read unit and the character-filter-processed image signal from the character filter unit, and a control unit which outputs the non-character-filter-processed image signal from the non-character filter unit when the identification unit determines that the image signal is the background area, the character-filter-processed image signal to be output from the character filter unit when the identification unit determines that the image signal is the character area and the comparison result of the comparison unit shows a first predetermined result, the control unit controlling the image signal to be output from the read unit when the identification unit determines that the image signal is the character area and the comparison result of the comparison unit shows a second predetermined result different from the first predetermined result.
Description
Technical field [0001] The present invention relates to an image processing device and an image processing method for processing document images. In particular, the present invention relates to an image processing device and an image processing method for suppressing white edges (where white appears at the edge portions of characters with a certain density level on the background). The white edge is generated by filtering processing such as edge processing. An image forming apparatus using an image processing apparatus and an image processing method is also disclosed. Background technique [0002] Recently, as the performance of image forming apparatuses such as digital copiers has been improved, integrated digital instruments with copy functions and printer functions have been developed and widely used. It is expected that each function of the image forming apparatus will be further improved. [0003] In the image forming apparatus disclosed in Japanese Patent Application Public...
Claims
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IPC IPC(8): H04N1/409H04N1/60G06V30/10
CPCG06T2207/20012G06T5/20G06T2207/30176G06T5/003G06T2207/10008G06T5/002G06T2207/20192G06T2207/20144H04N1/4092G06T2207/10024G06T7/194G06V30/10G06V30/15
Inventor 平山理继
Owner KK TOSHIBA