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Processing device and processing method for digital image

A digital image and processing device technology, applied in image data processing, image enhancement, instruments, etc., can solve problems such as image blur and lack, achieve the effect of removing block effect and maintaining image sharpness

Active Publication Date: 2012-11-14
ALTEK CORP
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  • Abstract
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Problems solved by technology

[0004] Although the polynomial interpolation method is simple and fast, the enlarged image is blurred due to the lack of high-frequency information of the image, and block effect will occur.

Method used

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  • Processing device and processing method for digital image
  • Processing device and processing method for digital image
  • Processing device and processing method for digital image

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Embodiment Construction

[0040] First please refer to figure 1 , figure 1 is a block diagram of a digital image processing device according to an embodiment of the present invention. The digital image processing device 10 includes a digital image capture module 100 , an image enlargement module 200 , an image correction module 300 and an image mixing module 400 . Wherein, the digital image capture module 100 is used to capture a plurality of first-resolution images, and the digital image capture module 100 is, for example, a digital camera, a digital video camera (Digital Video, DV) and other products with a digital image capture function, wherein In this embodiment, a digital image capture device using a CMOS sensor can be used, because the CMOS sensor is characterized by high-speed continuous shooting, so it can continuously shoot a plurality of first-resolution images for a scene.

[0041]The image enlargement module 200 is coupled to the digital image capture module 100 . The image enlargement ...

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Abstract

The invention provides a processing device and a processing method for a digital image. The processing device for the digital image comprises a digital image capturing module, an image amplifying module, an image correcting module and an image mixing module, wherein the digital image capturing module is used for capturing a plurality of first resolution images; the first resolution images are amplified by the image amplifying module, thereby generating a plurality of second resolution images; the image correcting module is used for selecting a target image and generating a corrected image; and the image mixing module is used for respectively performing directional gradient calculation on each pixel point of the target image and the corrected image, and performing weighted sum on each pixel point of the target image and the corrected image according to a gradient difference generated by the directional gradient calculation to output a third resolution image.

Description

technical field [0001] The present invention relates to a digital image processing, and in particular to a digital image processing device applying super-resolution (super-resolution) image enlargement technology and a processing method thereof. Background technique [0002] High-resolution images can be used in many different fields, including digital cameras, satellite images, medical images, surveillance cameras, and criminal investigations. For example, high-resolution medical images can improve the accuracy of doctors' diagnosis and the success rate of operations. In terms of surveillance cameras, enhancing the resolution of cameras to improve the tracking and recognition rate can effectively provide more police cases. clue. [0003] Therefore, enlarging low-resolution images to generate high-resolution images has always been an important research topic in digital image processing, and image interpolation is a method related to image enlargement technology. Generally,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
Inventor 庄哲纶吴宗达周宏隆
Owner ALTEK CORP
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