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Image processing device and image processing method

An image processing device and image processing technology, applied in image communication, electrical components, etc., can solve the problems of uneven brightness and darkness of document images, waste of ink, etc., and achieve the effect of saving ink and improving the phenomenon of uneven brightness and darkness of images

Active Publication Date: 2009-08-05
QUANTA COMPUTER INC
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AI Technical Summary

Problems solved by technology

[0005] However, although the portable computer system has the advantages of being easy to carry and operate, when the light source provided by its backlight module or surrounding light is uneven, it will cause uneven brightness and darkness in the captured document image.
Also, when the background of the document image is not white, a lot of ink will be wasted when printing the document image

Method used

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  • Image processing device and image processing method
  • Image processing device and image processing method
  • Image processing device and image processing method

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Embodiment Construction

[0023] A first specific embodiment according to the present invention is an image processing apparatus. see figure 1 , figure 1 is a functional block diagram illustrating the image processing device. Such as figure 1 As shown, the image processing device 1 includes a segmentation module 12 , a first determination module 14 and an adjustment module 16 .

[0024] In this embodiment, the segmentation module 12 is used to segment an image into a plurality of sub-images. The first judging module 14 is electrically connected to the dividing module 12 and includes a brightness statistics unit 142 and a judging unit 144 . The luminance statistical unit 142 is used to generate a luminance statistical result (such as a luminance statistical histogram) of the image and determine a brightness threshold L according to the luminance statistical result. th . The judging unit 144 is electrically connected to the brightness statistics unit 142, and is used to judge whether the average br...

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Abstract

The invention provides an image processing device, which comprises a partitioning module, a first judge module and an adjusting module, wherein the partitioning module is used for partitioning an image into a plurality of sub-images; the first judge module comprises a brightness statistical unit and a judge unit; the brightness statistical unit is used for generating a brightness statistical result of the image and determining a brightness critical value according to the brightness statistical result; the judge unit is used for judging whether the average brightness of a target sub-image of the sub-images is larger than the brightness critical value or not; and if so, the adjusting module adjusts the average brightness of the target sub-image.

Description

technical field [0001] The present invention is related to image processing, and in particular, relates to an image processing device and method capable of adjusting image brightness to achieve toner-saving effect. Background technique [0002] In recent years, due to the continuous improvement of image processing technology, various image input / output devices with different functions, such as scanners, printers, photocopiers, or multi-functional business machines, are available on the market. [0003] Generally speaking, when a user wants to convert a picture or text shown on a document into an image file on a computer, a scanner must be used to scan the picture or text into the computer. In addition, when the user wants to photocopy the pictures or text on the document, in addition to directly using the photocopier to photocopy, he can also use the scanner to scan the picture or text on the document into a computer document, and then use the printer to copy the document. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/40H04N1/00
Inventor 谢东霖曾耀顺李宛静李信宏
Owner QUANTA COMPUTER INC
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